/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 08:03:44,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 08:03:44,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 08:03:44,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 08:03:44,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 08:03:44,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 08:03:44,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 08:03:44,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 08:03:44,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 08:03:44,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 08:03:44,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 08:03:44,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 08:03:44,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 08:03:44,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 08:03:44,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 08:03:44,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 08:03:44,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 08:03:44,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 08:03:44,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 08:03:44,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 08:03:44,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 08:03:44,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 08:03:44,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 08:03:44,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 08:03:44,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 08:03:44,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 08:03:44,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 08:03:44,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 08:03:44,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf [2021-03-25 08:03:44,505 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 08:03:44,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 08:03:44,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 08:03:44,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 08:03:44,508 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 08:03:44,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 08:03:44,508 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 08:03:44,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 08:03:44,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 08:03:44,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 08:03:44,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 08:03:44,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 08:03:44,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 08:03:44,509 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 08:03:44,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 08:03:44,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 08:03:44,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 08:03:44,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 08:03:44,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 08:03:44,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 08:03:44,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 08:03:44,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 08:03:44,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 08:03:44,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 08:03:44,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 08:03:44,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 08:03:44,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 08:03:44,511 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 08:03:44,511 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 08:03:44,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 08:03:44,511 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 08:03:44,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 08:03:44,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 08:03:44,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 08:03:44,902 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 08:03:44,903 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 08:03:44,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl [2021-03-25 08:03:44,904 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl' [2021-03-25 08:03:44,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 08:03:44,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 08:03:44,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 08:03:44,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 08:03:44,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 08:03:44,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:03:44" (1/1) ... [2021-03-25 08:03:44,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:03:44" (1/1) ... [2021-03-25 08:03:44,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 08:03:44,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 08:03:44,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 08:03:44,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 08:03:44,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:03:44" (1/1) ... [2021-03-25 08:03:44,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:03:44" (1/1) ... [2021-03-25 08:03:44,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:03:44" (1/1) ... [2021-03-25 08:03:44,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:03:44" (1/1) ... [2021-03-25 08:03:44,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:03:44" (1/1) ... [2021-03-25 08:03:44,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:03:44" (1/1) ... [2021-03-25 08:03:44,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:03:44" (1/1) ... [2021-03-25 08:03:44,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 08:03:44,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 08:03:44,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 08:03:44,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 08:03:44,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:03:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 08:03:45,021 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-25 08:03:45,021 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-25 08:03:45,021 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-25 08:03:45,021 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-25 08:03:45,021 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-25 08:03:45,021 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-25 08:03:45,022 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-25 08:03:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-25 08:03:45,022 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-25 08:03:45,022 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-25 08:03:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-25 08:03:45,022 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-25 08:03:45,022 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 08:03:45,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 08:03:45,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 08:03:45,023 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 08:03:45,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 08:03:45,152 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 08:03:45,153 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 08:03:45 BoogieIcfgContainer [2021-03-25 08:03:45,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 08:03:45,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 08:03:45,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 08:03:45,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 08:03:45,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 08:03:44" (1/2) ... [2021-03-25 08:03:45,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c224fc and model type example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 08:03:45, skipping insertion in model container [2021-03-25 08:03:45,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 08:03:45" (2/2) ... [2021-03-25 08:03:45,169 INFO L111 eAbstractionObserver]: Analyzing ICFG example_4.bpl [2021-03-25 08:03:45,173 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 08:03:45,176 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 08:03:45,176 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 08:03:45,240 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-03-25 08:03:45,252 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 08:03:45,266 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 08:03:45,266 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 08:03:45,266 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 08:03:45,266 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 08:03:45,266 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 08:03:45,266 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 08:03:45,267 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 08:03:45,267 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 08:03:45,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions, 138 flow [2021-03-25 08:03:45,343 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2021-03-25 08:03:45,343 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-25 08:03:45,345 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. [2021-03-25 08:03:45,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 35 transitions, 138 flow [2021-03-25 08:03:45,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 29 transitions, 118 flow [2021-03-25 08:03:45,349 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:45,355 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 29 transitions, 118 flow [2021-03-25 08:03:45,357 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 29 transitions, 118 flow [2021-03-25 08:03:45,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 29 transitions, 118 flow [2021-03-25 08:03:45,371 INFO L129 PetriNetUnfolder]: 17/45 cut-off events. [2021-03-25 08:03:45,371 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-25 08:03:45,371 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. [2021-03-25 08:03:45,373 INFO L142 LiptonReduction]: Number of co-enabled transitions 216 [2021-03-25 08:03:45,443 INFO L154 LiptonReduction]: Checked pairs total: 66 [2021-03-25 08:03:45,443 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 08:03:45,444 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 96 [2021-03-25 08:03:45,455 INFO L129 PetriNetUnfolder]: 17/40 cut-off events. [2021-03-25 08:03:45,455 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-25 08:03:45,455 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:45,456 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:45,456 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:45,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:45,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1888322031, now seen corresponding path program 1 times [2021-03-25 08:03:45,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:45,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758576119] [2021-03-25 08:03:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:45,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:45,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:45,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:45,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:03:45,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:45,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:45,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758576119] [2021-03-25 08:03:45,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:45,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:03:45,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949665132] [2021-03-25 08:03:45,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:03:45,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:45,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:03:45,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:03:45,587 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2021-03-25 08:03:45,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 110 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) [2021-03-25 08:03:45,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:45,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2021-03-25 08:03:45,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:45,618 INFO L129 PetriNetUnfolder]: 14/37 cut-off events. [2021-03-25 08:03:45,618 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2021-03-25 08:03:45,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 37 events. 14/37 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 70 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 35. Up to 12 conditions per place. [2021-03-25 08:03:45,620 INFO L132 encePairwiseOnDemand]: 37/39 looper letters, 3 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2021-03-25 08:03:45,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 24 transitions, 113 flow [2021-03-25 08:03:45,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:03:45,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:03:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2021-03-25 08:03:45,629 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9145299145299145 [2021-03-25 08:03:45,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2021-03-25 08:03:45,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2021-03-25 08:03:45,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:45,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2021-03-25 08:03:45,634 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) [2021-03-25 08:03:45,640 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) [2021-03-25 08:03:45,640 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) [2021-03-25 08:03:45,641 INFO L185 Difference]: Start difference. First operand has 26 places, 25 transitions, 110 flow. Second operand 3 states and 107 transitions. [2021-03-25 08:03:45,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 24 transitions, 113 flow [2021-03-25 08:03:45,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 24 transitions, 75 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-25 08:03:45,657 INFO L241 Difference]: Finished difference. Result has 20 places, 24 transitions, 69 flow [2021-03-25 08:03:45,658 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=20, PETRI_TRANSITIONS=24} [2021-03-25 08:03:45,659 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -6 predicate places. [2021-03-25 08:03:45,659 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:45,659 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 24 transitions, 69 flow [2021-03-25 08:03:45,660 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 24 transitions, 69 flow [2021-03-25 08:03:45,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 24 transitions, 69 flow [2021-03-25 08:03:45,671 INFO L129 PetriNetUnfolder]: 14/37 cut-off events. [2021-03-25 08:03:45,671 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:03:45,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 37 events. 14/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 77 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 37. Up to 12 conditions per place. [2021-03-25 08:03:45,672 INFO L142 LiptonReduction]: Number of co-enabled transitions 90 [2021-03-25 08:03:45,675 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:45,675 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:45,675 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-25 08:03:45,676 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 24 transitions, 69 flow [2021-03-25 08:03:45,676 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) [2021-03-25 08:03:45,676 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:45,676 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:45,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 08:03:45,677 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:45,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:45,678 INFO L82 PathProgramCache]: Analyzing trace with hash -153583415, now seen corresponding path program 1 times [2021-03-25 08:03:45,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:45,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314626955] [2021-03-25 08:03:45,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:45,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:45,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:45,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:45,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:03:45,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:45,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:45,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314626955] [2021-03-25 08:03:45,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:45,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:03:45,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209745007] [2021-03-25 08:03:45,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:03:45,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:45,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:03:45,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:03:45,716 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2021-03-25 08:03:45,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 24 transitions, 69 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) [2021-03-25 08:03:45,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:45,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2021-03-25 08:03:45,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:45,730 INFO L129 PetriNetUnfolder]: 6/25 cut-off events. [2021-03-25 08:03:45,731 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 08:03:45,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 25 events. 6/25 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 3/28 useless extension candidates. Maximal degree in co-relation 30. Up to 6 conditions per place. [2021-03-25 08:03:45,731 INFO L132 encePairwiseOnDemand]: 36/39 looper letters, 2 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2021-03-25 08:03:45,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 22 transitions, 69 flow [2021-03-25 08:03:45,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:03:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:03:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2021-03-25 08:03:45,735 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9145299145299145 [2021-03-25 08:03:45,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2021-03-25 08:03:45,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2021-03-25 08:03:45,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:45,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2021-03-25 08:03:45,736 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) [2021-03-25 08:03:45,736 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) [2021-03-25 08:03:45,737 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) [2021-03-25 08:03:45,737 INFO L185 Difference]: Start difference. First operand has 20 places, 24 transitions, 69 flow. Second operand 3 states and 107 transitions. [2021-03-25 08:03:45,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 22 transitions, 69 flow [2021-03-25 08:03:45,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 22 transitions, 68 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:03:45,737 INFO L241 Difference]: Finished difference. Result has 21 places, 22 transitions, 64 flow [2021-03-25 08:03:45,738 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=21, PETRI_TRANSITIONS=22} [2021-03-25 08:03:45,739 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -5 predicate places. [2021-03-25 08:03:45,739 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:45,739 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 22 transitions, 64 flow [2021-03-25 08:03:45,740 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 22 transitions, 64 flow [2021-03-25 08:03:45,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 22 transitions, 64 flow [2021-03-25 08:03:45,746 INFO L129 PetriNetUnfolder]: 6/25 cut-off events. [2021-03-25 08:03:45,747 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:03:45,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 25 events. 6/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 26. Up to 6 conditions per place. [2021-03-25 08:03:45,747 INFO L142 LiptonReduction]: Number of co-enabled transitions 62 [2021-03-25 08:03:45,748 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:45,748 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:45,748 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-25 08:03:45,748 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 22 transitions, 64 flow [2021-03-25 08:03:45,749 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) [2021-03-25 08:03:45,749 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:45,749 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:45,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 08:03:45,749 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:45,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:45,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1587378979, now seen corresponding path program 1 times [2021-03-25 08:03:45,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:45,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981880402] [2021-03-25 08:03:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:45,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:45,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:45,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:45,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 08:03:45,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:45,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:45,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981880402] [2021-03-25 08:03:45,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:45,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 08:03:45,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275437041] [2021-03-25 08:03:45,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 08:03:45,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:45,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 08:03:45,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 08:03:45,784 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 39 [2021-03-25 08:03:45,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 22 transitions, 64 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) [2021-03-25 08:03:45,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:45,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 39 [2021-03-25 08:03:45,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:45,793 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-25 08:03:45,793 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 08:03:45,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 13 events. 0/13 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 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. [2021-03-25 08:03:45,794 INFO L132 encePairwiseOnDemand]: 35/39 looper letters, 1 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2021-03-25 08:03:45,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 13 transitions, 41 flow [2021-03-25 08:03:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 08:03:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 08:03:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2021-03-25 08:03:45,798 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9145299145299145 [2021-03-25 08:03:45,798 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2021-03-25 08:03:45,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2021-03-25 08:03:45,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:45,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2021-03-25 08:03:45,800 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) [2021-03-25 08:03:45,801 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) [2021-03-25 08:03:45,801 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) [2021-03-25 08:03:45,801 INFO L185 Difference]: Start difference. First operand has 21 places, 22 transitions, 64 flow. Second operand 3 states and 107 transitions. [2021-03-25 08:03:45,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 13 transitions, 41 flow [2021-03-25 08:03:45,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 13 transitions, 40 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:03:45,802 INFO L241 Difference]: Finished difference. Result has 22 places, 13 transitions, 38 flow [2021-03-25 08:03:45,802 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=22, PETRI_TRANSITIONS=13} [2021-03-25 08:03:45,802 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -4 predicate places. [2021-03-25 08:03:45,802 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:45,802 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 13 transitions, 38 flow [2021-03-25 08:03:45,803 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 13 transitions, 38 flow [2021-03-25 08:03:45,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 13 transitions, 38 flow [2021-03-25 08:03:45,810 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-25 08:03:45,810 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:03:45,810 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 8 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. [2021-03-25 08:03:45,810 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-25 08:03:45,811 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:45,811 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:45,811 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-25 08:03:45,812 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 13 transitions, 38 flow [2021-03-25 08:03:45,812 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) [2021-03-25 08:03:45,812 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:45,812 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:45,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 08:03:45,812 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:45,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:45,812 INFO L82 PathProgramCache]: Analyzing trace with hash -136113801, now seen corresponding path program 1 times [2021-03-25 08:03:45,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:45,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319311831] [2021-03-25 08:03:45,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:45,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:45,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:45,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:45,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:45,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:45,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:03:45,907 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:45,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:45,941 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:45,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:45,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319311831] [2021-03-25 08:03:45,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:45,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:45,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340892008] [2021-03-25 08:03:45,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:45,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:45,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:45,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:45,956 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:45,956 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) [2021-03-25 08:03:45,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:45,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:45,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:46,003 INFO L129 PetriNetUnfolder]: 15/65 cut-off events. [2021-03-25 08:03:46,003 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:03:46,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 65 events. 15/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 249 event pairs, 5 based on Foata normal form. 1/61 useless extension candidates. Maximal degree in co-relation 107. Up to 17 conditions per place. [2021-03-25 08:03:46,004 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 9 selfloop transitions, 3 changer transitions 1/21 dead transitions. [2021-03-25 08:03:46,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 80 flow [2021-03-25 08:03:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:46,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-25 08:03:46,005 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-25 08:03:46,005 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:46,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,006 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) [2021-03-25 08:03:46,006 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) [2021-03-25 08:03:46,007 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) [2021-03-25 08:03:46,007 INFO L185 Difference]: Start difference. First operand has 22 places, 13 transitions, 38 flow. Second operand 6 states and 188 transitions. [2021-03-25 08:03:46,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 80 flow [2021-03-25 08:03:46,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 79 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 08:03:46,008 INFO L241 Difference]: Finished difference. Result has 30 places, 15 transitions, 60 flow [2021-03-25 08:03:46,008 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} [2021-03-25 08:03:46,008 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2021-03-25 08:03:46,008 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:46,008 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 15 transitions, 60 flow [2021-03-25 08:03:46,008 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 15 transitions, 60 flow [2021-03-25 08:03:46,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 15 transitions, 60 flow [2021-03-25 08:03:46,011 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-03-25 08:03:46,011 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 08:03:46,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 29 events. 0/29 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 64 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 08:03:46,011 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-25 08:03:46,012 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:46,012 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:46,012 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-25 08:03:46,013 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 15 transitions, 60 flow [2021-03-25 08:03:46,013 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) [2021-03-25 08:03:46,013 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:46,013 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:46,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 08:03:46,013 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:46,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:46,014 INFO L82 PathProgramCache]: Analyzing trace with hash -816343229, now seen corresponding path program 2 times [2021-03-25 08:03:46,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:46,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924990198] [2021-03-25 08:03:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:46,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:46,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:46,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:03:46,049 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-25 08:03:46,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 08:03:46,064 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:46,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:46,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:46,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924990198] [2021-03-25 08:03:46,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:46,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:46,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121659027] [2021-03-25 08:03:46,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:46,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:46,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:46,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:46,079 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:46,080 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) [2021-03-25 08:03:46,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:46,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:46,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:46,114 INFO L129 PetriNetUnfolder]: 11/87 cut-off events. [2021-03-25 08:03:46,114 INFO L130 PetriNetUnfolder]: For 72/80 co-relation queries the response was YES. [2021-03-25 08:03:46,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 87 events. 11/87 cut-off events. For 72/80 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 436 event pairs, 3 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 194. Up to 22 conditions per place. [2021-03-25 08:03:46,115 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 11 selfloop transitions, 5 changer transitions 2/26 dead transitions. [2021-03-25 08:03:46,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 149 flow [2021-03-25 08:03:46,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:46,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:46,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-25 08:03:46,116 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-25 08:03:46,116 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:46,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,117 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) [2021-03-25 08:03:46,117 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) [2021-03-25 08:03:46,118 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) [2021-03-25 08:03:46,118 INFO L185 Difference]: Start difference. First operand has 29 places, 15 transitions, 60 flow. Second operand 6 states and 188 transitions. [2021-03-25 08:03:46,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 149 flow [2021-03-25 08:03:46,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 139 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-25 08:03:46,119 INFO L241 Difference]: Finished difference. Result has 36 places, 19 transitions, 108 flow [2021-03-25 08:03:46,119 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=19} [2021-03-25 08:03:46,119 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2021-03-25 08:03:46,119 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:46,119 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 19 transitions, 108 flow [2021-03-25 08:03:46,120 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 19 transitions, 108 flow [2021-03-25 08:03:46,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 19 transitions, 108 flow [2021-03-25 08:03:46,124 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2021-03-25 08:03:46,124 INFO L130 PetriNetUnfolder]: For 58/60 co-relation queries the response was YES. [2021-03-25 08:03:46,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 63 events. 0/63 cut-off events. For 58/60 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 294 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-25 08:03:46,125 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-25 08:03:46,125 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:46,125 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:46,126 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 08:03:46,126 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 108 flow [2021-03-25 08:03:46,126 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) [2021-03-25 08:03:46,126 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:46,126 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:46,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 08:03:46,127 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:46,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1390381937, now seen corresponding path program 3 times [2021-03-25 08:03:46,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:46,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252040238] [2021-03-25 08:03:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:46,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:46,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:46,151 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 08:03:46,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 08:03:46,159 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:46,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:46,172 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:46,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:46,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252040238] [2021-03-25 08:03:46,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:46,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:46,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978865799] [2021-03-25 08:03:46,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:46,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:46,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:46,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:46,186 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:46,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 108 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) [2021-03-25 08:03:46,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:46,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:46,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:46,231 INFO L129 PetriNetUnfolder]: 10/95 cut-off events. [2021-03-25 08:03:46,231 INFO L130 PetriNetUnfolder]: For 171/177 co-relation queries the response was YES. [2021-03-25 08:03:46,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 95 events. 10/95 cut-off events. For 171/177 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 509 event pairs, 2 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 262. Up to 25 conditions per place. [2021-03-25 08:03:46,231 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 12 selfloop transitions, 9 changer transitions 1/30 dead transitions. [2021-03-25 08:03:46,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 225 flow [2021-03-25 08:03:46,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:46,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-25 08:03:46,232 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-25 08:03:46,232 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:46,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,233 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) [2021-03-25 08:03:46,234 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) [2021-03-25 08:03:46,234 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) [2021-03-25 08:03:46,234 INFO L185 Difference]: Start difference. First operand has 35 places, 19 transitions, 108 flow. Second operand 6 states and 188 transitions. [2021-03-25 08:03:46,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 225 flow [2021-03-25 08:03:46,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 215 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-25 08:03:46,236 INFO L241 Difference]: Finished difference. Result has 42 places, 24 transitions, 189 flow [2021-03-25 08:03:46,236 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2021-03-25 08:03:46,236 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2021-03-25 08:03:46,236 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:46,236 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 24 transitions, 189 flow [2021-03-25 08:03:46,237 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 24 transitions, 189 flow [2021-03-25 08:03:46,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 24 transitions, 189 flow [2021-03-25 08:03:46,241 INFO L129 PetriNetUnfolder]: 0/73 cut-off events. [2021-03-25 08:03:46,241 INFO L130 PetriNetUnfolder]: For 177/187 co-relation queries the response was YES. [2021-03-25 08:03:46,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 73 events. 0/73 cut-off events. For 177/187 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 387 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-25 08:03:46,242 INFO L142 LiptonReduction]: Number of co-enabled transitions 52 [2021-03-25 08:03:46,243 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:46,243 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:46,243 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 08:03:46,243 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 24 transitions, 189 flow [2021-03-25 08:03:46,244 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) [2021-03-25 08:03:46,244 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:46,244 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:46,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 08:03:46,244 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:46,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:46,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1130172361, now seen corresponding path program 4 times [2021-03-25 08:03:46,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:46,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259984837] [2021-03-25 08:03:46,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:46,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:46,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:46,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:03:46,272 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-25 08:03:46,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 08:03:46,288 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:46,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:46,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:46,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259984837] [2021-03-25 08:03:46,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:46,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:46,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821965342] [2021-03-25 08:03:46,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:46,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:46,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:46,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:46,307 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:46,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 24 transitions, 189 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) [2021-03-25 08:03:46,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:46,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:46,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:46,354 INFO L129 PetriNetUnfolder]: 8/101 cut-off events. [2021-03-25 08:03:46,354 INFO L130 PetriNetUnfolder]: For 315/323 co-relation queries the response was YES. [2021-03-25 08:03:46,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 101 events. 8/101 cut-off events. For 315/323 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 580 event pairs, 6 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 322. Up to 23 conditions per place. [2021-03-25 08:03:46,356 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 13 selfloop transitions, 11 changer transitions 2/34 dead transitions. [2021-03-25 08:03:46,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 34 transitions, 320 flow [2021-03-25 08:03:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-25 08:03:46,358 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-25 08:03:46,358 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:46,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,359 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) [2021-03-25 08:03:46,359 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) [2021-03-25 08:03:46,359 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) [2021-03-25 08:03:46,359 INFO L185 Difference]: Start difference. First operand has 41 places, 24 transitions, 189 flow. Second operand 6 states and 188 transitions. [2021-03-25 08:03:46,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 34 transitions, 320 flow [2021-03-25 08:03:46,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 303 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-03-25 08:03:46,364 INFO L241 Difference]: Finished difference. Result has 48 places, 26 transitions, 241 flow [2021-03-25 08:03:46,364 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2021-03-25 08:03:46,364 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2021-03-25 08:03:46,365 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:46,365 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 26 transitions, 241 flow [2021-03-25 08:03:46,365 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 26 transitions, 241 flow [2021-03-25 08:03:46,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 26 transitions, 241 flow [2021-03-25 08:03:46,378 INFO L129 PetriNetUnfolder]: 0/80 cut-off events. [2021-03-25 08:03:46,379 INFO L130 PetriNetUnfolder]: For 350/374 co-relation queries the response was YES. [2021-03-25 08:03:46,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 80 events. 0/80 cut-off events. For 350/374 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 452 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-03-25 08:03:46,380 INFO L142 LiptonReduction]: Number of co-enabled transitions 60 [2021-03-25 08:03:46,382 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:46,382 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:46,382 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 08:03:46,384 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 241 flow [2021-03-25 08:03:46,384 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) [2021-03-25 08:03:46,384 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:46,384 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:46,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 08:03:46,384 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:46,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:46,386 INFO L82 PathProgramCache]: Analyzing trace with hash 892919981, now seen corresponding path program 5 times [2021-03-25 08:03:46,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:46,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821881700] [2021-03-25 08:03:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:46,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:46,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:46,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:03:46,435 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:46,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:46,451 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:46,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:46,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821881700] [2021-03-25 08:03:46,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:46,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:46,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505686844] [2021-03-25 08:03:46,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:46,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:46,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:46,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:46,465 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:46,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 26 transitions, 241 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) [2021-03-25 08:03:46,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:46,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:46,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:46,513 INFO L129 PetriNetUnfolder]: 7/99 cut-off events. [2021-03-25 08:03:46,513 INFO L130 PetriNetUnfolder]: For 450/460 co-relation queries the response was YES. [2021-03-25 08:03:46,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 99 events. 7/99 cut-off events. For 450/460 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 567 event pairs, 5 based on Foata normal form. 3/98 useless extension candidates. Maximal degree in co-relation 361. Up to 22 conditions per place. [2021-03-25 08:03:46,514 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 11 selfloop transitions, 12 changer transitions 4/35 dead transitions. [2021-03-25 08:03:46,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 35 transitions, 379 flow [2021-03-25 08:03:46,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-25 08:03:46,515 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-25 08:03:46,515 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:46,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,516 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) [2021-03-25 08:03:46,516 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) [2021-03-25 08:03:46,516 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) [2021-03-25 08:03:46,517 INFO L185 Difference]: Start difference. First operand has 47 places, 26 transitions, 241 flow. Second operand 6 states and 188 transitions. [2021-03-25 08:03:46,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 35 transitions, 379 flow [2021-03-25 08:03:46,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 35 transitions, 349 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-25 08:03:46,519 INFO L241 Difference]: Finished difference. Result has 53 places, 27 transitions, 279 flow [2021-03-25 08:03:46,519 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=53, PETRI_TRANSITIONS=27} [2021-03-25 08:03:46,519 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2021-03-25 08:03:46,519 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:46,519 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 27 transitions, 279 flow [2021-03-25 08:03:46,520 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 27 transitions, 279 flow [2021-03-25 08:03:46,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 27 transitions, 279 flow [2021-03-25 08:03:46,525 INFO L129 PetriNetUnfolder]: 0/75 cut-off events. [2021-03-25 08:03:46,525 INFO L130 PetriNetUnfolder]: For 407/430 co-relation queries the response was YES. [2021-03-25 08:03:46,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 75 events. 0/75 cut-off events. For 407/430 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 405 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. [2021-03-25 08:03:46,526 INFO L142 LiptonReduction]: Number of co-enabled transitions 56 [2021-03-25 08:03:46,528 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:46,529 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:46,529 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-25 08:03:46,532 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 27 transitions, 279 flow [2021-03-25 08:03:46,533 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) [2021-03-25 08:03:46,533 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:46,533 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:46,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 08:03:46,533 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:46,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:46,533 INFO L82 PathProgramCache]: Analyzing trace with hash 2125071045, now seen corresponding path program 6 times [2021-03-25 08:03:46,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:46,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167654895] [2021-03-25 08:03:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:46,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:46,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:46,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 08:03:46,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 08:03:46,584 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-25 08:03:46,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 08:03:46,599 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:46,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:46,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167654895] [2021-03-25 08:03:46,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:46,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:46,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846845120] [2021-03-25 08:03:46,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:46,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:46,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:46,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:46,612 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:46,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 27 transitions, 279 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) [2021-03-25 08:03:46,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:46,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:46,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:46,654 INFO L129 PetriNetUnfolder]: 6/90 cut-off events. [2021-03-25 08:03:46,654 INFO L130 PetriNetUnfolder]: For 574/600 co-relation queries the response was YES. [2021-03-25 08:03:46,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 90 events. 6/90 cut-off events. For 574/600 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 499 event pairs, 6 based on Foata normal form. 6/93 useless extension candidates. Maximal degree in co-relation 361. Up to 23 conditions per place. [2021-03-25 08:03:46,654 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 10 selfloop transitions, 14 changer transitions 1/33 dead transitions. [2021-03-25 08:03:46,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 33 transitions, 389 flow [2021-03-25 08:03:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:46,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-25 08:03:46,655 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-25 08:03:46,655 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:46,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,656 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) [2021-03-25 08:03:46,657 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) [2021-03-25 08:03:46,657 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) [2021-03-25 08:03:46,657 INFO L185 Difference]: Start difference. First operand has 52 places, 27 transitions, 279 flow. Second operand 6 states and 188 transitions. [2021-03-25 08:03:46,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 33 transitions, 389 flow [2021-03-25 08:03:46,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 33 transitions, 343 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-03-25 08:03:46,659 INFO L241 Difference]: Finished difference. Result has 56 places, 29 transitions, 325 flow [2021-03-25 08:03:46,660 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=56, PETRI_TRANSITIONS=29} [2021-03-25 08:03:46,660 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 30 predicate places. [2021-03-25 08:03:46,660 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:46,660 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 29 transitions, 325 flow [2021-03-25 08:03:46,660 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 29 transitions, 325 flow [2021-03-25 08:03:46,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 29 transitions, 325 flow [2021-03-25 08:03:46,665 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2021-03-25 08:03:46,665 INFO L130 PetriNetUnfolder]: For 544/595 co-relation queries the response was YES. [2021-03-25 08:03:46,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 77 events. 0/77 cut-off events. For 544/595 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 422 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. [2021-03-25 08:03:46,666 INFO L142 LiptonReduction]: Number of co-enabled transitions 64 [2021-03-25 08:03:46,667 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:46,667 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:46,667 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 08:03:46,668 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 29 transitions, 325 flow [2021-03-25 08:03:46,668 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) [2021-03-25 08:03:46,668 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:46,668 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:46,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 08:03:46,669 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:46,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:46,669 INFO L82 PathProgramCache]: Analyzing trace with hash -452147191, now seen corresponding path program 7 times [2021-03-25 08:03:46,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:46,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381314199] [2021-03-25 08:03:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:46,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:46,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:46,712 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 08:03:46,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 08:03:46,722 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:46,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:46,735 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:46,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:46,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381314199] [2021-03-25 08:03:46,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:46,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:46,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363615019] [2021-03-25 08:03:46,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:46,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:46,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:46,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:46,748 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:46,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 29 transitions, 325 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) [2021-03-25 08:03:46,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:46,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:46,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:46,783 INFO L129 PetriNetUnfolder]: 6/87 cut-off events. [2021-03-25 08:03:46,783 INFO L130 PetriNetUnfolder]: For 536/565 co-relation queries the response was YES. [2021-03-25 08:03:46,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 87 events. 6/87 cut-off events. For 536/565 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 456 event pairs, 6 based on Foata normal form. 8/93 useless extension candidates. Maximal degree in co-relation 355. Up to 23 conditions per place. [2021-03-25 08:03:46,784 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 8 selfloop transitions, 12 changer transitions 4/32 dead transitions. [2021-03-25 08:03:46,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 32 transitions, 403 flow [2021-03-25 08:03:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:46,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:46,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-03-25 08:03:46,785 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-03-25 08:03:46,785 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-03-25 08:03:46,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-03-25 08:03:46,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:46,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-03-25 08:03:46,785 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) [2021-03-25 08:03:46,786 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) [2021-03-25 08:03:46,786 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) [2021-03-25 08:03:46,786 INFO L185 Difference]: Start difference. First operand has 55 places, 29 transitions, 325 flow. Second operand 6 states and 187 transitions. [2021-03-25 08:03:46,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 32 transitions, 403 flow [2021-03-25 08:03:46,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 32 transitions, 383 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 08:03:46,788 INFO L241 Difference]: Finished difference. Result has 60 places, 27 transitions, 313 flow [2021-03-25 08:03:46,788 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=313, PETRI_PLACES=60, PETRI_TRANSITIONS=27} [2021-03-25 08:03:46,789 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2021-03-25 08:03:46,789 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:46,789 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 27 transitions, 313 flow [2021-03-25 08:03:46,789 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 27 transitions, 313 flow [2021-03-25 08:03:46,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 27 transitions, 313 flow [2021-03-25 08:03:46,793 INFO L129 PetriNetUnfolder]: 0/68 cut-off events. [2021-03-25 08:03:46,793 INFO L130 PetriNetUnfolder]: For 484/517 co-relation queries the response was YES. [2021-03-25 08:03:46,793 INFO L84 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 68 events. 0/68 cut-off events. For 484/517 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 334 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. [2021-03-25 08:03:46,793 INFO L142 LiptonReduction]: Number of co-enabled transitions 50 [2021-03-25 08:03:46,794 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:46,794 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:46,795 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 08:03:46,795 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 27 transitions, 313 flow [2021-03-25 08:03:46,795 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) [2021-03-25 08:03:46,795 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:46,795 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:46,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 08:03:46,795 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:46,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:46,796 INFO L82 PathProgramCache]: Analyzing trace with hash -455715067, now seen corresponding path program 8 times [2021-03-25 08:03:46,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:46,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359262997] [2021-03-25 08:03:46,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:46,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:46,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:46,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:03:46,819 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:46,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:46,831 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:46,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:46,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359262997] [2021-03-25 08:03:46,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:46,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:46,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621786977] [2021-03-25 08:03:46,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:46,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:46,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:46,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:46,843 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:46,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 27 transitions, 313 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) [2021-03-25 08:03:46,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:46,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:46,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:46,877 INFO L129 PetriNetUnfolder]: 5/83 cut-off events. [2021-03-25 08:03:46,877 INFO L130 PetriNetUnfolder]: For 489/509 co-relation queries the response was YES. [2021-03-25 08:03:46,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 83 events. 5/83 cut-off events. For 489/509 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 425 event pairs, 5 based on Foata normal form. 6/87 useless extension candidates. Maximal degree in co-relation 339. Up to 18 conditions per place. [2021-03-25 08:03:46,878 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 10 selfloop transitions, 10 changer transitions 2/30 dead transitions. [2021-03-25 08:03:46,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 30 transitions, 390 flow [2021-03-25 08:03:46,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:46,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:46,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-03-25 08:03:46,878 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-03-25 08:03:46,878 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-03-25 08:03:46,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-03-25 08:03:46,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:46,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-03-25 08:03:46,879 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) [2021-03-25 08:03:46,879 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) [2021-03-25 08:03:46,879 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) [2021-03-25 08:03:46,880 INFO L185 Difference]: Start difference. First operand has 57 places, 27 transitions, 313 flow. Second operand 6 states and 187 transitions. [2021-03-25 08:03:46,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 30 transitions, 390 flow [2021-03-25 08:03:46,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 30 transitions, 308 flow, removed 8 selfloop flow, removed 11 redundant places. [2021-03-25 08:03:46,882 INFO L241 Difference]: Finished difference. Result has 54 places, 27 transitions, 270 flow [2021-03-25 08:03:46,882 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=54, PETRI_TRANSITIONS=27} [2021-03-25 08:03:46,882 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 28 predicate places. [2021-03-25 08:03:46,882 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:46,882 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 27 transitions, 270 flow [2021-03-25 08:03:46,882 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 27 transitions, 270 flow [2021-03-25 08:03:46,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 27 transitions, 270 flow [2021-03-25 08:03:46,886 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2021-03-25 08:03:46,886 INFO L130 PetriNetUnfolder]: For 321/337 co-relation queries the response was YES. [2021-03-25 08:03:46,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 69 events. 0/69 cut-off events. For 321/337 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 345 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. [2021-03-25 08:03:46,886 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-25 08:03:46,887 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:46,887 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:46,887 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 08:03:46,888 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 27 transitions, 270 flow [2021-03-25 08:03:46,888 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) [2021-03-25 08:03:46,888 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:46,888 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:46,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 08:03:46,888 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:46,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:46,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2128638921, now seen corresponding path program 9 times [2021-03-25 08:03:46,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:46,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140316083] [2021-03-25 08:03:46,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:46,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:46,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:46,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:46,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:03:46,909 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:46,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:46,919 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:46,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:46,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140316083] [2021-03-25 08:03:46,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:46,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:46,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35294416] [2021-03-25 08:03:46,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:46,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:46,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:46,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:46,931 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:46,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 27 transitions, 270 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) [2021-03-25 08:03:46,931 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:46,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:46,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:46,967 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2021-03-25 08:03:46,967 INFO L130 PetriNetUnfolder]: For 292/306 co-relation queries the response was YES. [2021-03-25 08:03:46,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 77 events. 5/77 cut-off events. For 292/306 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 375 event pairs, 5 based on Foata normal form. 5/80 useless extension candidates. Maximal degree in co-relation 293. Up to 18 conditions per place. [2021-03-25 08:03:46,968 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 11 selfloop transitions, 9 changer transitions 3/31 dead transitions. [2021-03-25 08:03:46,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 31 transitions, 350 flow [2021-03-25 08:03:46,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:46,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-25 08:03:46,968 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-25 08:03:46,968 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:46,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-25 08:03:46,969 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) [2021-03-25 08:03:46,969 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) [2021-03-25 08:03:46,970 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) [2021-03-25 08:03:46,970 INFO L185 Difference]: Start difference. First operand has 52 places, 27 transitions, 270 flow. Second operand 6 states and 188 transitions. [2021-03-25 08:03:46,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 31 transitions, 350 flow [2021-03-25 08:03:46,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 31 transitions, 322 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-25 08:03:46,973 INFO L241 Difference]: Finished difference. Result has 55 places, 26 transitions, 263 flow [2021-03-25 08:03:46,974 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=55, PETRI_TRANSITIONS=26} [2021-03-25 08:03:46,974 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 29 predicate places. [2021-03-25 08:03:46,974 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:46,974 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 26 transitions, 263 flow [2021-03-25 08:03:46,974 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 26 transitions, 263 flow [2021-03-25 08:03:46,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 26 transitions, 263 flow [2021-03-25 08:03:46,980 INFO L129 PetriNetUnfolder]: 0/59 cut-off events. [2021-03-25 08:03:46,980 INFO L130 PetriNetUnfolder]: For 278/290 co-relation queries the response was YES. [2021-03-25 08:03:46,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 59 events. 0/59 cut-off events. For 278/290 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 267 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. [2021-03-25 08:03:46,981 INFO L142 LiptonReduction]: Number of co-enabled transitions 46 [2021-03-25 08:03:46,982 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:46,982 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:46,982 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 08:03:46,983 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 26 transitions, 263 flow [2021-03-25 08:03:46,983 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) [2021-03-25 08:03:46,983 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:46,983 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:46,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 08:03:46,983 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:46,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:46,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2084936939, now seen corresponding path program 10 times [2021-03-25 08:03:46,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:46,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443390420] [2021-03-25 08:03:46,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:47,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:47,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:47,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 08:03:47,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 08:03:47,026 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-25 08:03:47,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 08:03:47,038 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:47,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:47,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443390420] [2021-03-25 08:03:47,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:47,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:47,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590618408] [2021-03-25 08:03:47,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:47,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:47,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:47,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:47,053 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:47,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 26 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) [2021-03-25 08:03:47,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:47,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:47,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:47,086 INFO L129 PetriNetUnfolder]: 5/67 cut-off events. [2021-03-25 08:03:47,086 INFO L130 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2021-03-25 08:03:47,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 67 events. 5/67 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 311 event pairs, 1 based on Foata normal form. 1/67 useless extension candidates. Maximal degree in co-relation 256. Up to 14 conditions per place. [2021-03-25 08:03:47,087 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 13 selfloop transitions, 8 changer transitions 2/31 dead transitions. [2021-03-25 08:03:47,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 31 transitions, 345 flow [2021-03-25 08:03:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:47,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:47,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-25 08:03:47,089 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-25 08:03:47,089 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:47,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,089 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) [2021-03-25 08:03:47,090 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) [2021-03-25 08:03:47,090 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) [2021-03-25 08:03:47,090 INFO L185 Difference]: Start difference. First operand has 54 places, 26 transitions, 263 flow. Second operand 6 states and 188 transitions. [2021-03-25 08:03:47,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 31 transitions, 345 flow [2021-03-25 08:03:47,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 31 transitions, 323 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-25 08:03:47,093 INFO L241 Difference]: Finished difference. Result has 58 places, 25 transitions, 252 flow [2021-03-25 08:03:47,094 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=58, PETRI_TRANSITIONS=25} [2021-03-25 08:03:47,094 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2021-03-25 08:03:47,094 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:47,094 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 25 transitions, 252 flow [2021-03-25 08:03:47,094 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 25 transitions, 252 flow [2021-03-25 08:03:47,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 25 transitions, 252 flow [2021-03-25 08:03:47,106 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2021-03-25 08:03:47,106 INFO L130 PetriNetUnfolder]: For 222/232 co-relation queries the response was YES. [2021-03-25 08:03:47,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 50 events. 0/50 cut-off events. For 222/232 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 202 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. [2021-03-25 08:03:47,106 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-25 08:03:47,108 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:47,108 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:47,108 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-03-25 08:03:47,108 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 25 transitions, 252 flow [2021-03-25 08:03:47,108 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) [2021-03-25 08:03:47,108 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:47,108 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:47,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 08:03:47,109 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:47,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:47,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1473450575, now seen corresponding path program 11 times [2021-03-25 08:03:47,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:47,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108197134] [2021-03-25 08:03:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:47,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:47,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:47,124 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 08:03:47,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 08:03:47,136 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-25 08:03:47,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 08:03:47,151 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:47,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:47,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108197134] [2021-03-25 08:03:47,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:47,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:47,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011870856] [2021-03-25 08:03:47,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:47,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:47,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:47,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:47,167 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:47,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 25 transitions, 252 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) [2021-03-25 08:03:47,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:47,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:47,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:47,201 INFO L129 PetriNetUnfolder]: 3/78 cut-off events. [2021-03-25 08:03:47,201 INFO L130 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2021-03-25 08:03:47,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 78 events. 3/78 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 385 event pairs, 1 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 286. Up to 18 conditions per place. [2021-03-25 08:03:47,202 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 16 selfloop transitions, 8 changer transitions 2/34 dead transitions. [2021-03-25 08:03:47,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 34 transitions, 404 flow [2021-03-25 08:03:47,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:47,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-25 08:03:47,203 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-25 08:03:47,203 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:47,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,204 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) [2021-03-25 08:03:47,204 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) [2021-03-25 08:03:47,204 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) [2021-03-25 08:03:47,204 INFO L185 Difference]: Start difference. First operand has 56 places, 25 transitions, 252 flow. Second operand 6 states and 188 transitions. [2021-03-25 08:03:47,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 34 transitions, 404 flow [2021-03-25 08:03:47,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 34 transitions, 359 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-25 08:03:47,206 INFO L241 Difference]: Finished difference. Result has 60 places, 27 transitions, 277 flow [2021-03-25 08:03:47,206 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=60, PETRI_TRANSITIONS=27} [2021-03-25 08:03:47,206 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2021-03-25 08:03:47,206 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:47,207 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 27 transitions, 277 flow [2021-03-25 08:03:47,207 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 27 transitions, 277 flow [2021-03-25 08:03:47,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 27 transitions, 277 flow [2021-03-25 08:03:47,211 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2021-03-25 08:03:47,211 INFO L130 PetriNetUnfolder]: For 244/250 co-relation queries the response was YES. [2021-03-25 08:03:47,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 66 events. 0/66 cut-off events. For 244/250 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 315 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. [2021-03-25 08:03:47,212 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-25 08:03:47,214 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:47,214 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:47,214 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 08:03:47,214 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 27 transitions, 277 flow [2021-03-25 08:03:47,214 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) [2021-03-25 08:03:47,214 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:47,214 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:47,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 08:03:47,214 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:47,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:47,215 INFO L82 PathProgramCache]: Analyzing trace with hash 476805071, now seen corresponding path program 12 times [2021-03-25 08:03:47,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:47,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006169574] [2021-03-25 08:03:47,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:47,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:47,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:47,229 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:47,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:47,244 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-25 08:03:47,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 08:03:47,257 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:47,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:47,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006169574] [2021-03-25 08:03:47,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:47,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:47,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814220597] [2021-03-25 08:03:47,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:47,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:47,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:47,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:47,270 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:47,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 27 transitions, 277 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) [2021-03-25 08:03:47,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:47,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:47,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:47,304 INFO L129 PetriNetUnfolder]: 1/91 cut-off events. [2021-03-25 08:03:47,304 INFO L130 PetriNetUnfolder]: For 360/363 co-relation queries the response was YES. [2021-03-25 08:03:47,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 91 events. 1/91 cut-off events. For 360/363 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 519 event pairs, 1 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 341. Up to 20 conditions per place. [2021-03-25 08:03:47,305 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 16 selfloop transitions, 10 changer transitions 2/36 dead transitions. [2021-03-25 08:03:47,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 36 transitions, 442 flow [2021-03-25 08:03:47,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:47,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:47,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-25 08:03:47,306 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-25 08:03:47,306 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:47,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,306 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) [2021-03-25 08:03:47,307 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) [2021-03-25 08:03:47,307 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) [2021-03-25 08:03:47,307 INFO L185 Difference]: Start difference. First operand has 59 places, 27 transitions, 277 flow. Second operand 6 states and 188 transitions. [2021-03-25 08:03:47,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 36 transitions, 442 flow [2021-03-25 08:03:47,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 36 transitions, 420 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-25 08:03:47,309 INFO L241 Difference]: Finished difference. Result has 64 places, 29 transitions, 334 flow [2021-03-25 08:03:47,309 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=64, PETRI_TRANSITIONS=29} [2021-03-25 08:03:47,309 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2021-03-25 08:03:47,309 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:47,309 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 29 transitions, 334 flow [2021-03-25 08:03:47,309 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 29 transitions, 334 flow [2021-03-25 08:03:47,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 29 transitions, 334 flow [2021-03-25 08:03:47,314 INFO L129 PetriNetUnfolder]: 0/83 cut-off events. [2021-03-25 08:03:47,314 INFO L130 PetriNetUnfolder]: For 363/367 co-relation queries the response was YES. [2021-03-25 08:03:47,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 83 events. 0/83 cut-off events. For 363/367 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 457 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2021-03-25 08:03:47,315 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-25 08:03:47,316 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:47,316 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:47,316 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 08:03:47,316 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 29 transitions, 334 flow [2021-03-25 08:03:47,316 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) [2021-03-25 08:03:47,316 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:47,316 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:47,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 08:03:47,316 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:47,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:47,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1221507569, now seen corresponding path program 13 times [2021-03-25 08:03:47,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:47,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452590978] [2021-03-25 08:03:47,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:47,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:47,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:47,369 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:47,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:47,385 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-25 08:03:47,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 08:03:47,397 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:47,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:47,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452590978] [2021-03-25 08:03:47,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:47,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:47,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560909959] [2021-03-25 08:03:47,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:47,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:47,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:47,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:47,409 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:47,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 29 transitions, 334 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) [2021-03-25 08:03:47,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:47,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:47,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:47,438 INFO L129 PetriNetUnfolder]: 1/84 cut-off events. [2021-03-25 08:03:47,439 INFO L130 PetriNetUnfolder]: For 384/384 co-relation queries the response was YES. [2021-03-25 08:03:47,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 84 events. 1/84 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 458 event pairs, 0 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 344. Up to 19 conditions per place. [2021-03-25 08:03:47,439 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 18 selfloop transitions, 10 changer transitions 2/38 dead transitions. [2021-03-25 08:03:47,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 38 transitions, 506 flow [2021-03-25 08:03:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-25 08:03:47,440 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-25 08:03:47,440 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:47,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,441 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) [2021-03-25 08:03:47,441 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) [2021-03-25 08:03:47,441 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) [2021-03-25 08:03:47,441 INFO L185 Difference]: Start difference. First operand has 63 places, 29 transitions, 334 flow. Second operand 6 states and 188 transitions. [2021-03-25 08:03:47,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 38 transitions, 506 flow [2021-03-25 08:03:47,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 38 transitions, 485 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-25 08:03:47,443 INFO L241 Difference]: Finished difference. Result has 69 places, 31 transitions, 389 flow [2021-03-25 08:03:47,443 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=69, PETRI_TRANSITIONS=31} [2021-03-25 08:03:47,443 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 43 predicate places. [2021-03-25 08:03:47,443 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:47,443 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 31 transitions, 389 flow [2021-03-25 08:03:47,443 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 31 transitions, 389 flow [2021-03-25 08:03:47,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 31 transitions, 389 flow [2021-03-25 08:03:47,448 INFO L129 PetriNetUnfolder]: 0/76 cut-off events. [2021-03-25 08:03:47,448 INFO L130 PetriNetUnfolder]: For 420/426 co-relation queries the response was YES. [2021-03-25 08:03:47,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 76 events. 0/76 cut-off events. For 420/426 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 390 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-25 08:03:47,448 INFO L142 LiptonReduction]: Number of co-enabled transitions 44 [2021-03-25 08:03:47,450 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:47,450 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:47,450 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 08:03:47,450 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 31 transitions, 389 flow [2021-03-25 08:03:47,450 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) [2021-03-25 08:03:47,450 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:47,450 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:47,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 08:03:47,450 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:47,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:47,451 INFO L82 PathProgramCache]: Analyzing trace with hash 2080382099, now seen corresponding path program 14 times [2021-03-25 08:03:47,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:47,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968586932] [2021-03-25 08:03:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:47,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:47,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:47,474 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:47,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:47,488 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-25 08:03:47,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 08:03:47,501 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:47,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:47,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968586932] [2021-03-25 08:03:47,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:47,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:47,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074478405] [2021-03-25 08:03:47,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:47,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:47,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:47,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:47,513 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:47,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 31 transitions, 389 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) [2021-03-25 08:03:47,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:47,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:47,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:47,539 INFO L129 PetriNetUnfolder]: 1/77 cut-off events. [2021-03-25 08:03:47,539 INFO L130 PetriNetUnfolder]: For 436/436 co-relation queries the response was YES. [2021-03-25 08:03:47,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 77 events. 1/77 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 396 event pairs, 0 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 338. Up to 19 conditions per place. [2021-03-25 08:03:47,540 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 16 selfloop transitions, 9 changer transitions 3/36 dead transitions. [2021-03-25 08:03:47,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 36 transitions, 504 flow [2021-03-25 08:03:47,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:47,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-03-25 08:03:47,541 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-03-25 08:03:47,541 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-03-25 08:03:47,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-03-25 08:03:47,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:47,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-03-25 08:03:47,542 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) [2021-03-25 08:03:47,543 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) [2021-03-25 08:03:47,543 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) [2021-03-25 08:03:47,543 INFO L185 Difference]: Start difference. First operand has 68 places, 31 transitions, 389 flow. Second operand 6 states and 187 transitions. [2021-03-25 08:03:47,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 36 transitions, 504 flow [2021-03-25 08:03:47,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 36 transitions, 485 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-25 08:03:47,545 INFO L241 Difference]: Finished difference. Result has 72 places, 30 transitions, 392 flow [2021-03-25 08:03:47,545 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=376, 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=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=72, PETRI_TRANSITIONS=30} [2021-03-25 08:03:47,545 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2021-03-25 08:03:47,545 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:47,546 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 30 transitions, 392 flow [2021-03-25 08:03:47,546 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 30 transitions, 392 flow [2021-03-25 08:03:47,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 30 transitions, 392 flow [2021-03-25 08:03:47,549 INFO L129 PetriNetUnfolder]: 0/68 cut-off events. [2021-03-25 08:03:47,549 INFO L130 PetriNetUnfolder]: For 401/406 co-relation queries the response was YES. [2021-03-25 08:03:47,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 68 events. 0/68 cut-off events. For 401/406 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 323 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-25 08:03:47,550 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-25 08:03:47,551 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:47,551 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:47,551 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 08:03:47,551 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 30 transitions, 392 flow [2021-03-25 08:03:47,551 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) [2021-03-25 08:03:47,551 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:47,551 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:47,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 08:03:47,552 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:47,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:47,552 INFO L82 PathProgramCache]: Analyzing trace with hash -618143921, now seen corresponding path program 15 times [2021-03-25 08:03:47,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:47,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823801054] [2021-03-25 08:03:47,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:47,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:47,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:47,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:03:47,580 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-25 08:03:47,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 08:03:47,593 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:47,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:47,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823801054] [2021-03-25 08:03:47,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:47,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:47,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375811213] [2021-03-25 08:03:47,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:47,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:47,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:47,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:47,605 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:47,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 30 transitions, 392 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) [2021-03-25 08:03:47,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:47,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:47,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:47,638 INFO L129 PetriNetUnfolder]: 0/83 cut-off events. [2021-03-25 08:03:47,638 INFO L130 PetriNetUnfolder]: For 513/513 co-relation queries the response was YES. [2021-03-25 08:03:47,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 83 events. 0/83 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 447 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. [2021-03-25 08:03:47,639 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 18 selfloop transitions, 10 changer transitions 2/38 dead transitions. [2021-03-25 08:03:47,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 38 transitions, 571 flow [2021-03-25 08:03:47,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:47,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:47,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-25 08:03:47,640 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-25 08:03:47,640 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:47,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,640 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) [2021-03-25 08:03:47,641 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) [2021-03-25 08:03:47,641 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) [2021-03-25 08:03:47,641 INFO L185 Difference]: Start difference. First operand has 70 places, 30 transitions, 392 flow. Second operand 6 states and 188 transitions. [2021-03-25 08:03:47,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 38 transitions, 571 flow [2021-03-25 08:03:47,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 38 transitions, 539 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-25 08:03:47,643 INFO L241 Difference]: Finished difference. Result has 75 places, 33 transitions, 467 flow [2021-03-25 08:03:47,643 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=467, PETRI_PLACES=75, PETRI_TRANSITIONS=33} [2021-03-25 08:03:47,643 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 49 predicate places. [2021-03-25 08:03:47,643 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:47,643 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 33 transitions, 467 flow [2021-03-25 08:03:47,644 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 33 transitions, 467 flow [2021-03-25 08:03:47,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 33 transitions, 467 flow [2021-03-25 08:03:47,648 INFO L129 PetriNetUnfolder]: 0/77 cut-off events. [2021-03-25 08:03:47,648 INFO L130 PetriNetUnfolder]: For 495/496 co-relation queries the response was YES. [2021-03-25 08:03:47,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 77 events. 0/77 cut-off events. For 495/496 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 399 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-25 08:03:47,648 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-25 08:03:47,650 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:47,650 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:47,650 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 08:03:47,650 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 33 transitions, 467 flow [2021-03-25 08:03:47,651 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) [2021-03-25 08:03:47,651 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:47,651 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:47,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-25 08:03:47,651 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:47,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:47,651 INFO L82 PathProgramCache]: Analyzing trace with hash -79698959, now seen corresponding path program 16 times [2021-03-25 08:03:47,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:47,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490099548] [2021-03-25 08:03:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:47,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:47,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:47,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:03:47,679 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-25 08:03:47,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 08:03:47,691 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:47,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:47,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490099548] [2021-03-25 08:03:47,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:47,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:47,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444425458] [2021-03-25 08:03:47,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:47,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:47,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:47,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:47,703 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:47,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 33 transitions, 467 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) [2021-03-25 08:03:47,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:47,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:47,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:47,731 INFO L129 PetriNetUnfolder]: 0/76 cut-off events. [2021-03-25 08:03:47,731 INFO L130 PetriNetUnfolder]: For 519/521 co-relation queries the response was YES. [2021-03-25 08:03:47,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 76 events. 0/76 cut-off events. For 519/521 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 390 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. [2021-03-25 08:03:47,731 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 16 selfloop transitions, 11 changer transitions 2/37 dead transitions. [2021-03-25 08:03:47,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 37 transitions, 564 flow [2021-03-25 08:03:47,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:47,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:47,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-25 08:03:47,732 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-25 08:03:47,732 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:47,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,733 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) [2021-03-25 08:03:47,733 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) [2021-03-25 08:03:47,734 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) [2021-03-25 08:03:47,734 INFO L185 Difference]: Start difference. First operand has 74 places, 33 transitions, 467 flow. Second operand 6 states and 188 transitions. [2021-03-25 08:03:47,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 37 transitions, 564 flow [2021-03-25 08:03:47,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 37 transitions, 551 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-25 08:03:47,737 INFO L241 Difference]: Finished difference. Result has 78 places, 32 transitions, 466 flow [2021-03-25 08:03:47,737 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=466, PETRI_PLACES=78, PETRI_TRANSITIONS=32} [2021-03-25 08:03:47,737 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 52 predicate places. [2021-03-25 08:03:47,738 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:47,738 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 32 transitions, 466 flow [2021-03-25 08:03:47,739 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 32 transitions, 466 flow [2021-03-25 08:03:47,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 32 transitions, 466 flow [2021-03-25 08:03:47,744 INFO L129 PetriNetUnfolder]: 0/70 cut-off events. [2021-03-25 08:03:47,744 INFO L130 PetriNetUnfolder]: For 550/553 co-relation queries the response was YES. [2021-03-25 08:03:47,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 70 events. 0/70 cut-off events. For 550/553 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 336 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-25 08:03:47,745 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-25 08:03:47,746 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:47,746 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:47,746 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-25 08:03:47,747 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 32 transitions, 466 flow [2021-03-25 08:03:47,747 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) [2021-03-25 08:03:47,747 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:47,747 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:47,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-25 08:03:47,747 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:47,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:47,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1798042665, now seen corresponding path program 17 times [2021-03-25 08:03:47,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:47,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047737440] [2021-03-25 08:03:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:47,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:47,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:47,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:03:47,772 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:47,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:47,784 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:47,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:47,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047737440] [2021-03-25 08:03:47,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:47,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:47,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815185266] [2021-03-25 08:03:47,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:47,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:47,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:47,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:47,797 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:47,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 32 transitions, 466 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) [2021-03-25 08:03:47,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:47,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:47,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:47,833 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2021-03-25 08:03:47,833 INFO L130 PetriNetUnfolder]: For 582/588 co-relation queries the response was YES. [2021-03-25 08:03:47,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 69 events. 0/69 cut-off events. For 582/588 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 332 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. [2021-03-25 08:03:47,833 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 14 selfloop transitions, 8 changer transitions 4/34 dead transitions. [2021-03-25 08:03:47,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 34 transitions, 540 flow [2021-03-25 08:03:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:47,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2021-03-25 08:03:47,835 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-03-25 08:03:47,835 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 186 transitions. [2021-03-25 08:03:47,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 186 transitions. [2021-03-25 08:03:47,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:47,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 186 transitions. [2021-03-25 08:03:47,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:03:47,836 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) [2021-03-25 08:03:47,836 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) [2021-03-25 08:03:47,836 INFO L185 Difference]: Start difference. First operand has 76 places, 32 transitions, 466 flow. Second operand 6 states and 186 transitions. [2021-03-25 08:03:47,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 34 transitions, 540 flow [2021-03-25 08:03:47,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 34 transitions, 501 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-25 08:03:47,840 INFO L241 Difference]: Finished difference. Result has 78 places, 29 transitions, 400 flow [2021-03-25 08:03:47,840 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=400, PETRI_PLACES=78, PETRI_TRANSITIONS=29} [2021-03-25 08:03:47,840 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 52 predicate places. [2021-03-25 08:03:47,840 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:47,840 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 29 transitions, 400 flow [2021-03-25 08:03:47,841 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 29 transitions, 400 flow [2021-03-25 08:03:47,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 29 transitions, 400 flow [2021-03-25 08:03:47,845 INFO L129 PetriNetUnfolder]: 0/61 cut-off events. [2021-03-25 08:03:47,845 INFO L130 PetriNetUnfolder]: For 385/385 co-relation queries the response was YES. [2021-03-25 08:03:47,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 61 events. 0/61 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 269 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-25 08:03:47,845 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 08:03:47,846 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:47,846 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:47,846 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 08:03:47,846 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 29 transitions, 400 flow [2021-03-25 08:03:47,847 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) [2021-03-25 08:03:47,847 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:47,847 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:47,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-25 08:03:47,847 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:47,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:47,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1632985331, now seen corresponding path program 18 times [2021-03-25 08:03:47,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:47,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841986310] [2021-03-25 08:03:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:47,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:47,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:47,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:47,880 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 08:03:47,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 08:03:47,891 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:47,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:47,901 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:47,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:47,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841986310] [2021-03-25 08:03:47,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:47,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:47,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252824547] [2021-03-25 08:03:47,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:47,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:47,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:47,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:47,911 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:47,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 29 transitions, 400 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) [2021-03-25 08:03:47,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:47,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:47,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:47,970 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-03-25 08:03:47,970 INFO L130 PetriNetUnfolder]: For 402/402 co-relation queries the response was YES. [2021-03-25 08:03:47,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 60 events. 0/60 cut-off events. For 402/402 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 264 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. [2021-03-25 08:03:47,970 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 15 selfloop transitions, 8 changer transitions 2/33 dead transitions. [2021-03-25 08:03:47,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 33 transitions, 485 flow [2021-03-25 08:03:47,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-03-25 08:03:47,982 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2021-03-25 08:03:47,982 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:47,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-03-25 08:03:47,984 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) [2021-03-25 08:03:47,984 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) [2021-03-25 08:03:47,984 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) [2021-03-25 08:03:47,984 INFO L185 Difference]: Start difference. First operand has 75 places, 29 transitions, 400 flow. Second operand 6 states and 188 transitions. [2021-03-25 08:03:47,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 33 transitions, 485 flow [2021-03-25 08:03:47,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 33 transitions, 446 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-03-25 08:03:47,986 INFO L241 Difference]: Finished difference. Result has 77 places, 29 transitions, 389 flow [2021-03-25 08:03:47,986 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=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=77, PETRI_TRANSITIONS=29} [2021-03-25 08:03:47,986 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 51 predicate places. [2021-03-25 08:03:47,987 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:47,987 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 29 transitions, 389 flow [2021-03-25 08:03:47,987 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 29 transitions, 389 flow [2021-03-25 08:03:47,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 29 transitions, 389 flow [2021-03-25 08:03:47,990 INFO L129 PetriNetUnfolder]: 0/54 cut-off events. [2021-03-25 08:03:47,990 INFO L130 PetriNetUnfolder]: For 334/334 co-relation queries the response was YES. [2021-03-25 08:03:47,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 54 events. 0/54 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 218 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-25 08:03:47,991 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-25 08:03:47,992 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:47,992 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:47,992 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 08:03:47,992 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 29 transitions, 389 flow [2021-03-25 08:03:47,992 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) [2021-03-25 08:03:47,992 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:48,001 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:48,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-25 08:03:48,001 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:48,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:48,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1346663061, now seen corresponding path program 19 times [2021-03-25 08:03:48,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:48,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784229069] [2021-03-25 08:03:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:48,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:48,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:48,023 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 08:03:48,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 08:03:48,035 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-25 08:03:48,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 08:03:48,046 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:48,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:48,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784229069] [2021-03-25 08:03:48,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:48,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:48,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134870616] [2021-03-25 08:03:48,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:48,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:48,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:48,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:48,071 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:48,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 29 transitions, 389 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) [2021-03-25 08:03:48,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:48,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:48,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:48,095 INFO L129 PetriNetUnfolder]: 0/53 cut-off events. [2021-03-25 08:03:48,095 INFO L130 PetriNetUnfolder]: For 353/353 co-relation queries the response was YES. [2021-03-25 08:03:48,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 53 events. 0/53 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 208 event pairs, 0 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2021-03-25 08:03:48,096 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 13 selfloop transitions, 7 changer transitions 3/31 dead transitions. [2021-03-25 08:03:48,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 31 transitions, 443 flow [2021-03-25 08:03:48,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:48,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-03-25 08:03:48,097 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7991452991452992 [2021-03-25 08:03:48,097 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-03-25 08:03:48,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-03-25 08:03:48,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:48,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-03-25 08:03:48,097 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) [2021-03-25 08:03:48,097 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) [2021-03-25 08:03:48,097 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) [2021-03-25 08:03:48,098 INFO L185 Difference]: Start difference. First operand has 76 places, 29 transitions, 389 flow. Second operand 6 states and 187 transitions. [2021-03-25 08:03:48,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 31 transitions, 443 flow [2021-03-25 08:03:48,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 31 transitions, 433 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-25 08:03:48,116 INFO L241 Difference]: Finished difference. Result has 80 places, 26 transitions, 345 flow [2021-03-25 08:03:48,116 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=80, PETRI_TRANSITIONS=26} [2021-03-25 08:03:48,116 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2021-03-25 08:03:48,117 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:48,117 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 26 transitions, 345 flow [2021-03-25 08:03:48,117 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 26 transitions, 345 flow [2021-03-25 08:03:48,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 78 places, 26 transitions, 345 flow [2021-03-25 08:03:48,120 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-03-25 08:03:48,120 INFO L130 PetriNetUnfolder]: For 288/289 co-relation queries the response was YES. [2021-03-25 08:03:48,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 46 events. 0/46 cut-off events. For 288/289 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 164 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-25 08:03:48,120 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-25 08:03:48,121 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:48,121 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:48,121 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-25 08:03:48,122 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 26 transitions, 345 flow [2021-03-25 08:03:48,122 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) [2021-03-25 08:03:48,122 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:48,122 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:48,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-25 08:03:48,122 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:48,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:48,122 INFO L82 PathProgramCache]: Analyzing trace with hash -897088213, now seen corresponding path program 20 times [2021-03-25 08:03:48,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:48,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352938306] [2021-03-25 08:03:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:48,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:48,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:48,139 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:48,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:48,165 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-25 08:03:48,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 08:03:48,177 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:48,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:48,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352938306] [2021-03-25 08:03:48,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:48,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:48,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537370564] [2021-03-25 08:03:48,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:48,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:48,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:48,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:48,189 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:48,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 26 transitions, 345 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) [2021-03-25 08:03:48,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:48,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:48,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:48,227 INFO L129 PetriNetUnfolder]: 0/45 cut-off events. [2021-03-25 08:03:48,227 INFO L130 PetriNetUnfolder]: For 306/306 co-relation queries the response was YES. [2021-03-25 08:03:48,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 45 events. 0/45 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 156 event pairs, 0 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-25 08:03:48,227 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 9 selfloop transitions, 7 changer transitions 3/27 dead transitions. [2021-03-25 08:03:48,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 27 transitions, 387 flow [2021-03-25 08:03:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:48,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2021-03-25 08:03:48,228 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-03-25 08:03:48,228 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 186 transitions. [2021-03-25 08:03:48,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 186 transitions. [2021-03-25 08:03:48,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:48,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 186 transitions. [2021-03-25 08:03:48,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:03:48,229 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) [2021-03-25 08:03:48,229 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) [2021-03-25 08:03:48,229 INFO L185 Difference]: Start difference. First operand has 78 places, 26 transitions, 345 flow. Second operand 6 states and 186 transitions. [2021-03-25 08:03:48,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 27 transitions, 387 flow [2021-03-25 08:03:48,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 27 transitions, 366 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-03-25 08:03:48,231 INFO L241 Difference]: Finished difference. Result has 79 places, 23 transitions, 286 flow [2021-03-25 08:03:48,231 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=73, 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=286, PETRI_PLACES=79, PETRI_TRANSITIONS=23} [2021-03-25 08:03:48,231 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 53 predicate places. [2021-03-25 08:03:48,231 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:48,231 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 23 transitions, 286 flow [2021-03-25 08:03:48,231 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 23 transitions, 286 flow [2021-03-25 08:03:48,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 23 transitions, 286 flow [2021-03-25 08:03:48,234 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-25 08:03:48,234 INFO L130 PetriNetUnfolder]: For 227/228 co-relation queries the response was YES. [2021-03-25 08:03:48,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 38 events. 0/38 cut-off events. For 227/228 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 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. [2021-03-25 08:03:48,234 INFO L142 LiptonReduction]: Number of co-enabled transitions 18 [2021-03-25 08:03:48,235 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:48,236 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:48,236 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 08:03:48,237 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 23 transitions, 286 flow [2021-03-25 08:03:48,238 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) [2021-03-25 08:03:48,238 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:48,238 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:48,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-25 08:03:48,238 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:48,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:48,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1445521453, now seen corresponding path program 21 times [2021-03-25 08:03:48,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:48,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785019111] [2021-03-25 08:03:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:48,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:48,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:48,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:03:48,277 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:48,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:48,287 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:48,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:48,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785019111] [2021-03-25 08:03:48,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:48,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:48,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433641129] [2021-03-25 08:03:48,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:48,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:48,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:48,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:48,298 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:48,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 23 transitions, 286 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) [2021-03-25 08:03:48,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:48,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:48,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:48,338 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2021-03-25 08:03:48,338 INFO L130 PetriNetUnfolder]: For 244/246 co-relation queries the response was YES. [2021-03-25 08:03:48,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 37 events. 0/37 cut-off events. For 244/246 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 101 event pairs, 0 based on Foata normal form. 2/39 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-03-25 08:03:48,339 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 8 selfloop transitions, 4 changer transitions 4/24 dead transitions. [2021-03-25 08:03:48,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 24 transitions, 322 flow [2021-03-25 08:03:48,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:48,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:48,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2021-03-25 08:03:48,339 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-03-25 08:03:48,339 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 186 transitions. [2021-03-25 08:03:48,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 186 transitions. [2021-03-25 08:03:48,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:48,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 186 transitions. [2021-03-25 08:03:48,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:03:48,340 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) [2021-03-25 08:03:48,340 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) [2021-03-25 08:03:48,340 INFO L185 Difference]: Start difference. First operand has 73 places, 23 transitions, 286 flow. Second operand 6 states and 186 transitions. [2021-03-25 08:03:48,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 24 transitions, 322 flow [2021-03-25 08:03:48,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 24 transitions, 267 flow, removed 4 selfloop flow, removed 11 redundant places. [2021-03-25 08:03:48,342 INFO L241 Difference]: Finished difference. Result has 68 places, 19 transitions, 187 flow [2021-03-25 08:03:48,342 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=68, PETRI_TRANSITIONS=19} [2021-03-25 08:03:48,342 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2021-03-25 08:03:48,342 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:48,342 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 19 transitions, 187 flow [2021-03-25 08:03:48,342 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 19 transitions, 187 flow [2021-03-25 08:03:48,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 19 transitions, 187 flow [2021-03-25 08:03:48,344 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-03-25 08:03:48,344 INFO L130 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2021-03-25 08:03:48,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 29 events. 0/29 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 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. [2021-03-25 08:03:48,344 INFO L142 LiptonReduction]: Number of co-enabled transitions 10 [2021-03-25 08:03:48,345 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:48,345 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:48,345 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-03-25 08:03:48,345 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 19 transitions, 187 flow [2021-03-25 08:03:48,345 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) [2021-03-25 08:03:48,345 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:48,345 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:48,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-25 08:03:48,345 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:48,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:48,345 INFO L82 PathProgramCache]: Analyzing trace with hash 244298485, now seen corresponding path program 22 times [2021-03-25 08:03:48,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:48,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111770734] [2021-03-25 08:03:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:48,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:48,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:48,374 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-25 08:03:48,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 08:03:48,381 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:48,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:48,391 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:48,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:48,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111770734] [2021-03-25 08:03:48,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:48,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:48,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420714375] [2021-03-25 08:03:48,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:48,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:48,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:48,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:48,418 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:48,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 19 transitions, 187 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) [2021-03-25 08:03:48,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:48,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:48,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:48,442 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-03-25 08:03:48,443 INFO L130 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2021-03-25 08:03:48,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 28 events. 0/28 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 52 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-25 08:03:48,443 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 5 selfloop transitions, 3 changer transitions 3/19 dead transitions. [2021-03-25 08:03:48,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 19 transitions, 209 flow [2021-03-25 08:03:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:48,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2021-03-25 08:03:48,443 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2021-03-25 08:03:48,444 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 183 transitions. [2021-03-25 08:03:48,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 183 transitions. [2021-03-25 08:03:48,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:48,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 183 transitions. [2021-03-25 08:03:48,444 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) [2021-03-25 08:03:48,445 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) [2021-03-25 08:03:48,445 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) [2021-03-25 08:03:48,445 INFO L185 Difference]: Start difference. First operand has 61 places, 19 transitions, 187 flow. Second operand 6 states and 183 transitions. [2021-03-25 08:03:48,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 19 transitions, 209 flow [2021-03-25 08:03:48,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 19 transitions, 162 flow, removed 3 selfloop flow, removed 12 redundant places. [2021-03-25 08:03:48,446 INFO L241 Difference]: Finished difference. Result has 55 places, 16 transitions, 111 flow [2021-03-25 08:03:48,446 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=55, PETRI_TRANSITIONS=16} [2021-03-25 08:03:48,447 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 29 predicate places. [2021-03-25 08:03:48,447 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:48,447 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 16 transitions, 111 flow [2021-03-25 08:03:48,447 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 16 transitions, 111 flow [2021-03-25 08:03:48,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 16 transitions, 111 flow [2021-03-25 08:03:48,449 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 08:03:48,449 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-25 08:03:48,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 21 events. 0/21 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 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. [2021-03-25 08:03:48,449 INFO L142 LiptonReduction]: Number of co-enabled transitions 8 [2021-03-25 08:03:48,449 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:48,449 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:48,449 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 08:03:48,464 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 16 transitions, 111 flow [2021-03-25 08:03:48,464 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) [2021-03-25 08:03:48,464 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:48,464 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:48,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-25 08:03:48,464 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:48,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:48,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1958479669, now seen corresponding path program 23 times [2021-03-25 08:03:48,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:48,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066340990] [2021-03-25 08:03:48,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:48,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:48,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:48,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:03:48,483 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:48,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:48,492 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:48,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:48,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066340990] [2021-03-25 08:03:48,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:48,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:48,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216534516] [2021-03-25 08:03:48,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:48,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:48,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:48,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:48,503 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:48,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 16 transitions, 111 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) [2021-03-25 08:03:48,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:48,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:48,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:48,545 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 08:03:48,545 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-03-25 08:03:48,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 20 events. 0/20 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 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. [2021-03-25 08:03:48,545 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 3 selfloop transitions, 2 changer transitions 3/16 dead transitions. [2021-03-25 08:03:48,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 16 transitions, 127 flow [2021-03-25 08:03:48,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:48,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2021-03-25 08:03:48,546 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2021-03-25 08:03:48,546 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 182 transitions. [2021-03-25 08:03:48,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 182 transitions. [2021-03-25 08:03:48,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:48,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 182 transitions. [2021-03-25 08:03:48,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 08:03:48,547 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) [2021-03-25 08:03:48,547 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) [2021-03-25 08:03:48,547 INFO L185 Difference]: Start difference. First operand has 50 places, 16 transitions, 111 flow. Second operand 6 states and 182 transitions. [2021-03-25 08:03:48,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 16 transitions, 127 flow [2021-03-25 08:03:48,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 16 transitions, 100 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-03-25 08:03:48,547 INFO L241 Difference]: Finished difference. Result has 48 places, 13 transitions, 61 flow [2021-03-25 08:03:48,548 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=61, PETRI_PLACES=48, PETRI_TRANSITIONS=13} [2021-03-25 08:03:48,548 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2021-03-25 08:03:48,548 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:48,548 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 13 transitions, 61 flow [2021-03-25 08:03:48,548 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 13 transitions, 61 flow [2021-03-25 08:03:48,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 13 transitions, 61 flow [2021-03-25 08:03:48,549 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-25 08:03:48,549 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 08:03:48,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 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. [2021-03-25 08:03:48,549 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-25 08:03:48,549 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:48,549 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:48,549 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 08:03:48,550 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 13 transitions, 61 flow [2021-03-25 08:03:48,550 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) [2021-03-25 08:03:48,550 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 08:03:48,550 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 08:03:48,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-25 08:03:48,550 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 08:03:48,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 08:03:48,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1484748849, now seen corresponding path program 24 times [2021-03-25 08:03:48,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 08:03:48,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547273043] [2021-03-25 08:03:48,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 08:03:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 08:03:48,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 08:03:48,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 08:03:48,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 08:03:48,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 08:03:48,575 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-25 08:03:48,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 08:03:48,590 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-03-25 08:03:48,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 08:03:48,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 08:03:48,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547273043] [2021-03-25 08:03:48,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 08:03:48,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 08:03:48,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599376747] [2021-03-25 08:03:48,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 08:03:48,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 08:03:48,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 08:03:48,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 08:03:48,600 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 39 [2021-03-25 08:03:48,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 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) [2021-03-25 08:03:48,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 08:03:48,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 39 [2021-03-25 08:03:48,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 08:03:48,632 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-25 08:03:48,632 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 08:03:48,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 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 2 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. [2021-03-25 08:03:48,632 INFO L132 encePairwiseOnDemand]: 34/39 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2021-03-25 08:03:48,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 12 transitions, 65 flow [2021-03-25 08:03:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 08:03:48,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 08:03:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2021-03-25 08:03:48,633 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7649572649572649 [2021-03-25 08:03:48,633 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 179 transitions. [2021-03-25 08:03:48,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 179 transitions. [2021-03-25 08:03:48,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 08:03:48,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 179 transitions. [2021-03-25 08:03:48,633 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) [2021-03-25 08:03:48,633 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) [2021-03-25 08:03:48,634 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) [2021-03-25 08:03:48,634 INFO L185 Difference]: Start difference. First operand has 40 places, 13 transitions, 61 flow. Second operand 6 states and 179 transitions. [2021-03-25 08:03:48,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 12 transitions, 65 flow [2021-03-25 08:03:48,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 12 transitions, 51 flow, removed 2 selfloop flow, removed 7 redundant places. [2021-03-25 08:03:48,634 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2021-03-25 08:03:48,634 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=37, PETRI_TRANSITIONS=0} [2021-03-25 08:03:48,634 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2021-03-25 08:03:48,634 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 08:03:48,634 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 0 transitions, 0 flow [2021-03-25 08:03:48,634 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 0 transitions, 0 flow [2021-03-25 08:03:48,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 08:03:48,634 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 08:03:48,634 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 08:03:48,635 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. [2021-03-25 08:03:48,635 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 08:03:48,635 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 08:03:48,635 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 08:03:48,635 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 08:03:48,635 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 08:03:48,635 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) [2021-03-25 08:03:48,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-25 08:03:48,637 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 08:03:48 BasicIcfg [2021-03-25 08:03:48,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 08:03:48,638 INFO L168 Benchmark]: Toolchain (without parser) took 3690.18 ms. Allocated memory was 255.9 MB in the beginning and 419.4 MB in the end (delta: 163.6 MB). Free memory was 236.6 MB in the beginning and 255.2 MB in the end (delta: -18.6 MB). Peak memory consumption was 145.4 MB. Max. memory is 16.0 GB. [2021-03-25 08:03:48,638 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.40 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.5 MB in the end (delta: 161.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 08:03:48,638 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.56 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 08:03:48,638 INFO L168 Benchmark]: Boogie Preprocessor took 10.02 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.3 MB in the end (delta: 753.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 08:03:48,638 INFO L168 Benchmark]: RCFGBuilder took 173.56 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 240.8 MB in the end (delta: -6.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.0 GB. [2021-03-25 08:03:48,638 INFO L168 Benchmark]: TraceAbstraction took 3482.16 ms. Allocated memory was 255.9 MB in the beginning and 419.4 MB in the end (delta: 163.6 MB). Free memory was 240.2 MB in the beginning and 255.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 147.8 MB. Max. memory is 16.0 GB. [2021-03-25 08:03:48,639 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 0.40 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.5 MB in the end (delta: 161.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.56 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 235.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.02 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.3 MB in the end (delta: 753.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 173.56 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 240.8 MB in the end (delta: -6.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3482.16 ms. Allocated memory was 255.9 MB in the beginning and 419.4 MB in the end (delta: 163.6 MB). Free memory was 240.2 MB in the beginning and 255.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 147.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 86.3ms, 30 PlacesBefore, 26 PlacesAfterwards, 29 TransitionsBefore, 25 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: 0, positive unconditional: 66, 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: 60, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 60, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 66, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 60, unknown conditional: 0, unknown unconditional: 60] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 15.2ms, 20 PlacesBefore, 20 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 90 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 7.7ms, 21 PlacesBefore, 21 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 62 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 8.2ms, 22 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 4.0ms, 30 PlacesBefore, 29 PlacesAfterwards, 15 TransitionsBefore, 15 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 5.9ms, 36 PlacesBefore, 35 PlacesAfterwards, 19 TransitionsBefore, 19 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 6.4ms, 42 PlacesBefore, 41 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 52 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 17.1ms, 48 PlacesBefore, 47 PlacesAfterwards, 26 TransitionsBefore, 26 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 9.0ms, 53 PlacesBefore, 52 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 56 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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, 56 PlacesBefore, 55 PlacesAfterwards, 29 TransitionsBefore, 29 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 5.5ms, 60 PlacesBefore, 57 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 50 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 5.1ms, 54 PlacesBefore, 52 PlacesAfterwards, 27 TransitionsBefore, 27 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 7.6ms, 55 PlacesBefore, 54 PlacesAfterwards, 26 TransitionsBefore, 26 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 13.3ms, 58 PlacesBefore, 56 PlacesAfterwards, 25 TransitionsBefore, 25 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 6.9ms, 60 PlacesBefore, 59 PlacesAfterwards, 27 TransitionsBefore, 27 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 6.4ms, 64 PlacesBefore, 63 PlacesAfterwards, 29 TransitionsBefore, 29 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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, 69 PlacesBefore, 68 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 44 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 5.1ms, 72 PlacesBefore, 70 PlacesAfterwards, 30 TransitionsBefore, 30 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 5.9ms, 75 PlacesBefore, 74 PlacesAfterwards, 33 TransitionsBefore, 33 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 6.6ms, 78 PlacesBefore, 76 PlacesAfterwards, 32 TransitionsBefore, 32 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 5.6ms, 78 PlacesBefore, 75 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 30 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 5.1ms, 77 PlacesBefore, 76 PlacesAfterwards, 29 TransitionsBefore, 29 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 4.5ms, 80 PlacesBefore, 78 PlacesAfterwards, 26 TransitionsBefore, 26 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 4.7ms, 79 PlacesBefore, 73 PlacesAfterwards, 23 TransitionsBefore, 23 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 2.5ms, 68 PlacesBefore, 61 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 10 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 2.0ms, 55 PlacesBefore, 50 PlacesAfterwards, 16 TransitionsBefore, 16 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 1.4ms, 48 PlacesBefore, 40 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 0.4ms, 37 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: 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] , 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): 0, Positive cache size: 0, Positive conditional cache size: 0, 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: 6.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3372.4ms, OverallIterations: 27, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1173.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 182.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 197 SDtfs, 247 SDslu, 128 SDs, 0 SdLazy, 358 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 256.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1121.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=467occurred in iteration=18, 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: 24.7ms SsaConstructionTime, 72.7ms SatisfiabilityAnalysisTime, 1489.0ms InterpolantComputationTime, 351 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 4346 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...