/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 09:52:36,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 09:52:36,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 09:52:36,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 09:52:36,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 09:52:36,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 09:52:36,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 09:52:36,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 09:52:36,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 09:52:36,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 09:52:36,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 09:52:36,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 09:52:36,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 09:52:36,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 09:52:36,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 09:52:36,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 09:52:36,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 09:52:36,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 09:52:36,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 09:52:36,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 09:52:36,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 09:52:36,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 09:52:36,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 09:52:36,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 09:52:36,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 09:52:36,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 09:52:36,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 09:52:36,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 09:52:36,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 09:52:36,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 09:52:36,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 09:52:36,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 09:52:36,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 09:52:36,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 09:52:36,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 09:52:36,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 09:52:36,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf [2021-03-25 09:52:36,924 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 09:52:36,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 09:52:36,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 09:52:36,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 09:52:36,927 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 09:52:36,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 09:52:36,928 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 09:52:36,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 09:52:36,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 09:52:36,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 09:52:36,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 09:52:36,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 09:52:36,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 09:52:36,930 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 09:52:36,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 09:52:36,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 09:52:36,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 09:52:36,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 09:52:36,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 09:52:36,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 09:52:36,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 09:52:36,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 09:52:36,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 09:52:36,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 09:52:36,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 09:52:36,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 09:52:36,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 09:52:36,932 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 09:52:36,933 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 09:52:36,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 09:52:36,933 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 09:52:37,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 09:52:37,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 09:52:37,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 09:52:37,253 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 09:52:37,254 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 09:52:37,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-4.wvr.bpl [2021-03-25 09:52:37,255 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-4.wvr.bpl' [2021-03-25 09:52:37,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 09:52:37,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 09:52:37,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 09:52:37,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 09:52:37,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 09:52:37,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:52:37" (1/1) ... [2021-03-25 09:52:37,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:52:37" (1/1) ... [2021-03-25 09:52:37,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 09:52:37,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 09:52:37,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 09:52:37,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 09:52:37,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:52:37" (1/1) ... [2021-03-25 09:52:37,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:52:37" (1/1) ... [2021-03-25 09:52:37,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:52:37" (1/1) ... [2021-03-25 09:52:37,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:52:37" (1/1) ... [2021-03-25 09:52:37,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:52:37" (1/1) ... [2021-03-25 09:52:37,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:52:37" (1/1) ... [2021-03-25 09:52:37,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:52:37" (1/1) ... [2021-03-25 09:52:37,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 09:52:37,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 09:52:37,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 09:52:37,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 09:52:37,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:52:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 09:52:37,397 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 09:52:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 09:52:37,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 09:52:37,397 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 09:52:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 09:52:37,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 09:52:37,398 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 09:52:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 09:52:37,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 09:52:37,398 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 09:52:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 09:52:37,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 09:52:37,399 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-25 09:52:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-25 09:52:37,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-25 09:52:37,400 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 09:52:37,657 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 09:52:37,657 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 09:52:37,659 INFO L202 PluginConnector]: Adding new model ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:52:37 BoogieIcfgContainer [2021-03-25 09:52:37,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 09:52:37,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 09:52:37,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 09:52:37,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 09:52:37,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:52:37" (1/2) ... [2021-03-25 09:52:37,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709e223c and model type ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 09:52:37, skipping insertion in model container [2021-03-25 09:52:37,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:52:37" (2/2) ... [2021-03-25 09:52:37,665 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-4.wvr.bpl [2021-03-25 09:52:37,685 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 09:52:37,689 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 09:52:37,689 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 09:52:37,773 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-25 09:52:37,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 09:52:37,823 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 09:52:37,823 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 09:52:37,823 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 09:52:37,823 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 09:52:37,824 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 09:52:37,824 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 09:52:37,824 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 09:52:37,824 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 09:52:37,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 38 transitions, 108 flow [2021-03-25 09:52:37,876 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-03-25 09:52:37,876 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 09:52:37,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 34 events. 0/34 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 09:52:37,878 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 38 transitions, 108 flow [2021-03-25 09:52:37,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 32 transitions, 88 flow [2021-03-25 09:52:37,883 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:37,892 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 32 transitions, 88 flow [2021-03-25 09:52:37,895 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 32 transitions, 88 flow [2021-03-25 09:52:37,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 32 transitions, 88 flow [2021-03-25 09:52:37,920 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-03-25 09:52:37,920 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 09:52:37,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 32 events. 0/32 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 09:52:37,925 INFO L142 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-25 09:52:37,982 INFO L154 LiptonReduction]: Checked pairs total: 932 [2021-03-25 09:52:37,982 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 09:52:37,983 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 101 [2021-03-25 09:52:38,009 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-03-25 09:52:38,010 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 09:52:38,010 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:38,011 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:38,011 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:38,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:38,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2128410956, now seen corresponding path program 1 times [2021-03-25 09:52:38,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:38,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266628002] [2021-03-25 09:52:38,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:38,177 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-03-25 09:52:38,178 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-03-25 09:52:38,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:38,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:38,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:38,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:38,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:38,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 09:52:38,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:38,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:38,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:38,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-25 09:52:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:38,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266628002] [2021-03-25 09:52:38,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:38,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 09:52:38,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678162050] [2021-03-25 09:52:38,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:52:38,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:38,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:52:38,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:52:38,227 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 43 [2021-03-25 09:52:38,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:38,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:38,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 43 [2021-03-25 09:52:38,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:38,394 INFO L129 PetriNetUnfolder]: 231/570 cut-off events. [2021-03-25 09:52:38,394 INFO L130 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2021-03-25 09:52:38,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 570 events. 231/570 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3564 event pairs, 100 based on Foata normal form. 1/564 useless extension candidates. Maximal degree in co-relation 1006. Up to 216 conditions per place. [2021-03-25 09:52:38,402 INFO L132 encePairwiseOnDemand]: 32/43 looper letters, 18 selfloop transitions, 9 changer transitions 1/44 dead transitions. [2021-03-25 09:52:38,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 168 flow [2021-03-25 09:52:38,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:52:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:52:38,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2021-03-25 09:52:38,412 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8325581395348837 [2021-03-25 09:52:38,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 179 transitions. [2021-03-25 09:52:38,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 179 transitions. [2021-03-25 09:52:38,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:38,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 179 transitions. [2021-03-25 09:52:38,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.8) internal successors, (179), 5 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 09:52:38,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:38,421 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:38,422 INFO L185 Difference]: Start difference. First operand has 40 places, 27 transitions, 78 flow. Second operand 5 states and 179 transitions. [2021-03-25 09:52:38,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 168 flow [2021-03-25 09:52:38,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 152 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-25 09:52:38,429 INFO L241 Difference]: Finished difference. Result has 39 places, 34 transitions, 126 flow [2021-03-25 09:52:38,430 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2021-03-25 09:52:38,431 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2021-03-25 09:52:38,431 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:38,431 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 34 transitions, 126 flow [2021-03-25 09:52:38,432 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 34 transitions, 126 flow [2021-03-25 09:52:38,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 34 transitions, 126 flow [2021-03-25 09:52:38,451 INFO L129 PetriNetUnfolder]: 63/259 cut-off events. [2021-03-25 09:52:38,452 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-03-25 09:52:38,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 259 events. 63/259 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1599 event pairs, 30 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 429. Up to 100 conditions per place. [2021-03-25 09:52:38,456 INFO L142 LiptonReduction]: Number of co-enabled transitions 336 [2021-03-25 09:52:38,466 INFO L154 LiptonReduction]: Checked pairs total: 105 [2021-03-25 09:52:38,466 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:52:38,466 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 35 [2021-03-25 09:52:38,471 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 126 flow [2021-03-25 09:52:38,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:38,472 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:38,473 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:38,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 09:52:38,473 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:38,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:38,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1567724390, now seen corresponding path program 2 times [2021-03-25 09:52:38,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:38,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817821827] [2021-03-25 09:52:38,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:38,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:38,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:38,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:38,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:38,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:38,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:38,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:38,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:38,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:38,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:38,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:38,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:38,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817821827] [2021-03-25 09:52:38,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:38,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:52:38,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71328139] [2021-03-25 09:52:38,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:52:38,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:38,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:52:38,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:52:38,584 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-25 09:52:38,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 126 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:38,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:38,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-25 09:52:38,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:38,962 INFO L129 PetriNetUnfolder]: 1284/2404 cut-off events. [2021-03-25 09:52:38,962 INFO L130 PetriNetUnfolder]: For 364/399 co-relation queries the response was YES. [2021-03-25 09:52:38,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 2404 events. 1284/2404 cut-off events. For 364/399 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 16863 event pairs, 311 based on Foata normal form. 15/2266 useless extension candidates. Maximal degree in co-relation 5285. Up to 646 conditions per place. [2021-03-25 09:52:38,979 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 30 selfloop transitions, 29 changer transitions 0/76 dead transitions. [2021-03-25 09:52:38,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 76 transitions, 352 flow [2021-03-25 09:52:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 09:52:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 09:52:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2021-03-25 09:52:38,988 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7807308970099668 [2021-03-25 09:52:38,988 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 235 transitions. [2021-03-25 09:52:38,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 235 transitions. [2021-03-25 09:52:38,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:38,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 235 transitions. [2021-03-25 09:52:38,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:38,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:38,992 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:38,992 INFO L185 Difference]: Start difference. First operand has 39 places, 34 transitions, 126 flow. Second operand 7 states and 235 transitions. [2021-03-25 09:52:38,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 76 transitions, 352 flow [2021-03-25 09:52:38,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 76 transitions, 336 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-25 09:52:38,996 INFO L241 Difference]: Finished difference. Result has 45 places, 58 transitions, 297 flow [2021-03-25 09:52:38,996 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=45, PETRI_TRANSITIONS=58} [2021-03-25 09:52:38,996 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2021-03-25 09:52:38,997 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:38,997 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 58 transitions, 297 flow [2021-03-25 09:52:38,997 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 58 transitions, 297 flow [2021-03-25 09:52:38,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 58 transitions, 297 flow [2021-03-25 09:52:39,059 INFO L129 PetriNetUnfolder]: 429/1028 cut-off events. [2021-03-25 09:52:39,060 INFO L130 PetriNetUnfolder]: For 424/470 co-relation queries the response was YES. [2021-03-25 09:52:39,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2464 conditions, 1028 events. 429/1028 cut-off events. For 424/470 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7470 event pairs, 115 based on Foata normal form. 2/960 useless extension candidates. Maximal degree in co-relation 2363. Up to 251 conditions per place. [2021-03-25 09:52:39,086 INFO L142 LiptonReduction]: Number of co-enabled transitions 754 [2021-03-25 09:52:39,258 INFO L154 LiptonReduction]: Checked pairs total: 201 [2021-03-25 09:52:39,259 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:52:39,259 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 263 [2021-03-25 09:52:39,259 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 58 transitions, 297 flow [2021-03-25 09:52:39,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:39,260 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:39,260 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:39,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 09:52:39,260 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:39,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:39,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1141953138, now seen corresponding path program 3 times [2021-03-25 09:52:39,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:39,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525411608] [2021-03-25 09:52:39,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:39,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:39,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:39,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:39,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:39,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:39,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:39,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:39,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:39,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525411608] [2021-03-25 09:52:39,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:39,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:52:39,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085723126] [2021-03-25 09:52:39,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:52:39,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:39,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:52:39,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:52:39,324 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-25 09:52:39,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 58 transitions, 297 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:39,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:39,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-25 09:52:39,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:39,603 INFO L129 PetriNetUnfolder]: 1268/2468 cut-off events. [2021-03-25 09:52:39,603 INFO L130 PetriNetUnfolder]: For 2489/2738 co-relation queries the response was YES. [2021-03-25 09:52:39,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7240 conditions, 2468 events. 1268/2468 cut-off events. For 2489/2738 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 17326 event pairs, 292 based on Foata normal form. 83/2432 useless extension candidates. Maximal degree in co-relation 7094. Up to 1452 conditions per place. [2021-03-25 09:52:39,623 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 54 selfloop transitions, 29 changer transitions 0/100 dead transitions. [2021-03-25 09:52:39,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 100 transitions, 707 flow [2021-03-25 09:52:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:52:39,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:52:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2021-03-25 09:52:39,625 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7627906976744186 [2021-03-25 09:52:39,625 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 164 transitions. [2021-03-25 09:52:39,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 164 transitions. [2021-03-25 09:52:39,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:39,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 164 transitions. [2021-03-25 09:52:39,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:39,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:39,629 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:39,629 INFO L185 Difference]: Start difference. First operand has 45 places, 58 transitions, 297 flow. Second operand 5 states and 164 transitions. [2021-03-25 09:52:39,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 100 transitions, 707 flow [2021-03-25 09:52:39,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 100 transitions, 664 flow, removed 19 selfloop flow, removed 1 redundant places. [2021-03-25 09:52:39,638 INFO L241 Difference]: Finished difference. Result has 50 places, 79 transitions, 512 flow [2021-03-25 09:52:39,638 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=512, PETRI_PLACES=50, PETRI_TRANSITIONS=79} [2021-03-25 09:52:39,639 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2021-03-25 09:52:39,639 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:39,639 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 79 transitions, 512 flow [2021-03-25 09:52:39,639 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 79 transitions, 512 flow [2021-03-25 09:52:39,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 79 transitions, 512 flow [2021-03-25 09:52:39,709 INFO L129 PetriNetUnfolder]: 483/1143 cut-off events. [2021-03-25 09:52:39,710 INFO L130 PetriNetUnfolder]: For 893/1017 co-relation queries the response was YES. [2021-03-25 09:52:39,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3082 conditions, 1143 events. 483/1143 cut-off events. For 893/1017 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8290 event pairs, 99 based on Foata normal form. 31/1102 useless extension candidates. Maximal degree in co-relation 2981. Up to 305 conditions per place. [2021-03-25 09:52:39,722 INFO L142 LiptonReduction]: Number of co-enabled transitions 960 [2021-03-25 09:52:40,067 INFO L154 LiptonReduction]: Checked pairs total: 630 [2021-03-25 09:52:40,067 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:52:40,067 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 428 [2021-03-25 09:52:40,067 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 79 transitions, 514 flow [2021-03-25 09:52:40,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:40,068 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:40,068 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:40,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 09:52:40,068 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:40,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:40,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1650012812, now seen corresponding path program 4 times [2021-03-25 09:52:40,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:40,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100008533] [2021-03-25 09:52:40,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:40,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:40,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:40,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:40,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:40,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:40,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:40,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:40,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:40,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:40,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:40,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100008533] [2021-03-25 09:52:40,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:40,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 09:52:40,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924157379] [2021-03-25 09:52:40,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 09:52:40,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:40,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 09:52:40,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 09:52:40,106 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-03-25 09:52:40,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 79 transitions, 514 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:40,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:40,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-03-25 09:52:40,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:40,484 INFO L129 PetriNetUnfolder]: 1631/3202 cut-off events. [2021-03-25 09:52:40,485 INFO L130 PetriNetUnfolder]: For 5554/5888 co-relation queries the response was YES. [2021-03-25 09:52:40,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10514 conditions, 3202 events. 1631/3202 cut-off events. For 5554/5888 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 24203 event pairs, 341 based on Foata normal form. 168/3191 useless extension candidates. Maximal degree in co-relation 10402. Up to 852 conditions per place. [2021-03-25 09:52:40,512 INFO L132 encePairwiseOnDemand]: 33/44 looper letters, 45 selfloop transitions, 61 changer transitions 0/123 dead transitions. [2021-03-25 09:52:40,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 123 transitions, 1001 flow [2021-03-25 09:52:40,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 09:52:40,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 09:52:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 202 transitions. [2021-03-25 09:52:40,514 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7651515151515151 [2021-03-25 09:52:40,514 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 202 transitions. [2021-03-25 09:52:40,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 202 transitions. [2021-03-25 09:52:40,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:40,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 202 transitions. [2021-03-25 09:52:40,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:40,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:40,517 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:40,517 INFO L185 Difference]: Start difference. First operand has 50 places, 79 transitions, 514 flow. Second operand 6 states and 202 transitions. [2021-03-25 09:52:40,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 123 transitions, 1001 flow [2021-03-25 09:52:40,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 123 transitions, 996 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 09:52:40,526 INFO L241 Difference]: Finished difference. Result has 56 places, 107 transitions, 935 flow [2021-03-25 09:52:40,527 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=935, PETRI_PLACES=56, PETRI_TRANSITIONS=107} [2021-03-25 09:52:40,527 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2021-03-25 09:52:40,527 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:40,527 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 107 transitions, 935 flow [2021-03-25 09:52:40,527 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 107 transitions, 935 flow [2021-03-25 09:52:40,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 107 transitions, 935 flow [2021-03-25 09:52:40,632 INFO L129 PetriNetUnfolder]: 627/1503 cut-off events. [2021-03-25 09:52:40,632 INFO L130 PetriNetUnfolder]: For 3464/4394 co-relation queries the response was YES. [2021-03-25 09:52:40,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5130 conditions, 1503 events. 627/1503 cut-off events. For 3464/4394 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 11980 event pairs, 110 based on Foata normal form. 176/1576 useless extension candidates. Maximal degree in co-relation 5048. Up to 413 conditions per place. [2021-03-25 09:52:40,651 INFO L142 LiptonReduction]: Number of co-enabled transitions 1322 [2021-03-25 09:52:41,071 INFO L154 LiptonReduction]: Checked pairs total: 1491 [2021-03-25 09:52:41,071 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:52:41,071 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 544 [2021-03-25 09:52:41,073 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 107 transitions, 937 flow [2021-03-25 09:52:41,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:41,074 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:41,074 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:41,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 09:52:41,074 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:41,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:41,074 INFO L82 PathProgramCache]: Analyzing trace with hash 500491824, now seen corresponding path program 1 times [2021-03-25 09:52:41,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:41,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760143605] [2021-03-25 09:52:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:41,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:41,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:41,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:41,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:41,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:41,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:41,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:41,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:41,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760143605] [2021-03-25 09:52:41,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:41,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:52:41,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914192017] [2021-03-25 09:52:41,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:52:41,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:41,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:52:41,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:52:41,107 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2021-03-25 09:52:41,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 107 transitions, 937 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:41,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:41,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2021-03-25 09:52:41,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:41,447 INFO L129 PetriNetUnfolder]: 1481/2956 cut-off events. [2021-03-25 09:52:41,447 INFO L130 PetriNetUnfolder]: For 9288/9790 co-relation queries the response was YES. [2021-03-25 09:52:41,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11578 conditions, 2956 events. 1481/2956 cut-off events. For 9288/9790 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 22188 event pairs, 370 based on Foata normal form. 239/3051 useless extension candidates. Maximal degree in co-relation 11450. Up to 1814 conditions per place. [2021-03-25 09:52:41,478 INFO L132 encePairwiseOnDemand]: 33/45 looper letters, 77 selfloop transitions, 41 changer transitions 0/135 dead transitions. [2021-03-25 09:52:41,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 135 transitions, 1390 flow [2021-03-25 09:52:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:52:41,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:52:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2021-03-25 09:52:41,480 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7377777777777778 [2021-03-25 09:52:41,480 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 166 transitions. [2021-03-25 09:52:41,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 166 transitions. [2021-03-25 09:52:41,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:41,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 166 transitions. [2021-03-25 09:52:41,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:41,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:41,482 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:41,482 INFO L185 Difference]: Start difference. First operand has 56 places, 107 transitions, 937 flow. Second operand 5 states and 166 transitions. [2021-03-25 09:52:41,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 135 transitions, 1390 flow [2021-03-25 09:52:41,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 135 transitions, 1371 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-25 09:52:41,495 INFO L241 Difference]: Finished difference. Result has 60 places, 116 transitions, 1147 flow [2021-03-25 09:52:41,495 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1147, PETRI_PLACES=60, PETRI_TRANSITIONS=116} [2021-03-25 09:52:41,495 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2021-03-25 09:52:41,495 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:41,496 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 116 transitions, 1147 flow [2021-03-25 09:52:41,496 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 116 transitions, 1147 flow [2021-03-25 09:52:41,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 116 transitions, 1147 flow [2021-03-25 09:52:41,624 INFO L129 PetriNetUnfolder]: 615/1504 cut-off events. [2021-03-25 09:52:41,624 INFO L130 PetriNetUnfolder]: For 4025/4813 co-relation queries the response was YES. [2021-03-25 09:52:41,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 1504 events. 615/1504 cut-off events. For 4025/4813 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 12002 event pairs, 100 based on Foata normal form. 196/1616 useless extension candidates. Maximal degree in co-relation 5312. Up to 413 conditions per place. [2021-03-25 09:52:41,643 INFO L142 LiptonReduction]: Number of co-enabled transitions 1378 [2021-03-25 09:52:41,956 INFO L154 LiptonReduction]: Checked pairs total: 1514 [2021-03-25 09:52:41,956 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 09:52:41,957 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 462 [2021-03-25 09:52:41,957 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 116 transitions, 1151 flow [2021-03-25 09:52:41,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:41,958 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:41,958 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:41,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 09:52:41,958 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:41,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:41,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1449325763, now seen corresponding path program 1 times [2021-03-25 09:52:41,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:41,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889263019] [2021-03-25 09:52:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:41,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:41,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:41,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:41,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:41,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:41,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:41,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:41,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:41,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:41,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:41,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:41,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:42,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:42,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:42,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889263019] [2021-03-25 09:52:42,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:42,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:52:42,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285508099] [2021-03-25 09:52:42,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:52:42,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:42,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:52:42,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:52:42,006 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2021-03-25 09:52:42,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 116 transitions, 1151 flow. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:42,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:42,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2021-03-25 09:52:42,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:42,439 INFO L129 PetriNetUnfolder]: 1521/3041 cut-off events. [2021-03-25 09:52:42,439 INFO L130 PetriNetUnfolder]: For 11321/12033 co-relation queries the response was YES. [2021-03-25 09:52:42,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12293 conditions, 3041 events. 1521/3041 cut-off events. For 11321/12033 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 23091 event pairs, 269 based on Foata normal form. 409/3303 useless extension candidates. Maximal degree in co-relation 12204. Up to 716 conditions per place. [2021-03-25 09:52:42,467 INFO L132 encePairwiseOnDemand]: 33/47 looper letters, 39 selfloop transitions, 92 changer transitions 0/148 dead transitions. [2021-03-25 09:52:42,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 148 transitions, 1586 flow [2021-03-25 09:52:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 09:52:42,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 09:52:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 305 transitions. [2021-03-25 09:52:42,473 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7210401891252955 [2021-03-25 09:52:42,473 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 305 transitions. [2021-03-25 09:52:42,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 305 transitions. [2021-03-25 09:52:42,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:42,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 305 transitions. [2021-03-25 09:52:42,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.888888888888886) internal successors, (305), 9 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:42,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:42,475 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:42,475 INFO L185 Difference]: Start difference. First operand has 60 places, 116 transitions, 1151 flow. Second operand 9 states and 305 transitions. [2021-03-25 09:52:42,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 148 transitions, 1586 flow [2021-03-25 09:52:42,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 148 transitions, 1547 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 09:52:42,489 INFO L241 Difference]: Finished difference. Result has 68 places, 122 transitions, 1385 flow [2021-03-25 09:52:42,489 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1385, PETRI_PLACES=68, PETRI_TRANSITIONS=122} [2021-03-25 09:52:42,489 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2021-03-25 09:52:42,490 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:42,490 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 122 transitions, 1385 flow [2021-03-25 09:52:42,490 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 122 transitions, 1385 flow [2021-03-25 09:52:42,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 122 transitions, 1385 flow [2021-03-25 09:52:42,595 INFO L129 PetriNetUnfolder]: 609/1517 cut-off events. [2021-03-25 09:52:42,595 INFO L130 PetriNetUnfolder]: For 5779/6353 co-relation queries the response was YES. [2021-03-25 09:52:42,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6102 conditions, 1517 events. 609/1517 cut-off events. For 5779/6353 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 12379 event pairs, 108 based on Foata normal form. 154/1592 useless extension candidates. Maximal degree in co-relation 6009. Up to 421 conditions per place. [2021-03-25 09:52:42,615 INFO L142 LiptonReduction]: Number of co-enabled transitions 1442 [2021-03-25 09:52:42,766 INFO L154 LiptonReduction]: Checked pairs total: 781 [2021-03-25 09:52:42,766 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:52:42,766 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 276 [2021-03-25 09:52:42,767 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 122 transitions, 1385 flow [2021-03-25 09:52:42,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:42,767 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:42,767 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:42,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 09:52:42,768 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:42,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:42,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1926872471, now seen corresponding path program 1 times [2021-03-25 09:52:42,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:42,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27465938] [2021-03-25 09:52:42,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:42,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:42,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:42,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:42,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:42,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:42,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:42,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:42,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:42,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27465938] [2021-03-25 09:52:42,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:42,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:52:42,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98741803] [2021-03-25 09:52:42,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:52:42,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:42,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:52:42,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:52:42,816 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2021-03-25 09:52:42,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 122 transitions, 1385 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:42,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:42,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2021-03-25 09:52:42,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:43,121 INFO L129 PetriNetUnfolder]: 1309/2728 cut-off events. [2021-03-25 09:52:43,121 INFO L130 PetriNetUnfolder]: For 12428/12895 co-relation queries the response was YES. [2021-03-25 09:52:43,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12118 conditions, 2728 events. 1309/2728 cut-off events. For 12428/12895 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 20931 event pairs, 419 based on Foata normal form. 175/2795 useless extension candidates. Maximal degree in co-relation 11987. Up to 1734 conditions per place. [2021-03-25 09:52:43,150 INFO L132 encePairwiseOnDemand]: 33/47 looper letters, 83 selfloop transitions, 46 changer transitions 1/147 dead transitions. [2021-03-25 09:52:43,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 147 transitions, 1899 flow [2021-03-25 09:52:43,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:52:43,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:52:43,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2021-03-25 09:52:43,152 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7148936170212766 [2021-03-25 09:52:43,152 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 168 transitions. [2021-03-25 09:52:43,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 168 transitions. [2021-03-25 09:52:43,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:43,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 168 transitions. [2021-03-25 09:52:43,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:43,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:43,154 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:43,154 INFO L185 Difference]: Start difference. First operand has 68 places, 122 transitions, 1385 flow. Second operand 5 states and 168 transitions. [2021-03-25 09:52:43,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 147 transitions, 1899 flow [2021-03-25 09:52:43,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 147 transitions, 1681 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-25 09:52:43,171 INFO L241 Difference]: Finished difference. Result has 68 places, 130 transitions, 1437 flow [2021-03-25 09:52:43,172 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1437, PETRI_PLACES=68, PETRI_TRANSITIONS=130} [2021-03-25 09:52:43,172 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2021-03-25 09:52:43,172 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:43,172 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 130 transitions, 1437 flow [2021-03-25 09:52:43,172 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 130 transitions, 1437 flow [2021-03-25 09:52:43,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 130 transitions, 1437 flow [2021-03-25 09:52:43,269 INFO L129 PetriNetUnfolder]: 570/1471 cut-off events. [2021-03-25 09:52:43,269 INFO L130 PetriNetUnfolder]: For 4243/4799 co-relation queries the response was YES. [2021-03-25 09:52:43,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5323 conditions, 1471 events. 570/1471 cut-off events. For 4243/4799 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 12180 event pairs, 87 based on Foata normal form. 119/1507 useless extension candidates. Maximal degree in co-relation 5228. Up to 401 conditions per place. [2021-03-25 09:52:43,291 INFO L142 LiptonReduction]: Number of co-enabled transitions 1342 [2021-03-25 09:52:43,628 INFO L154 LiptonReduction]: Checked pairs total: 2052 [2021-03-25 09:52:43,628 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 09:52:43,628 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 456 [2021-03-25 09:52:43,628 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 130 transitions, 1449 flow [2021-03-25 09:52:43,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:43,629 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:43,629 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:43,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 09:52:43,629 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:43,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:43,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1143074106, now seen corresponding path program 1 times [2021-03-25 09:52:43,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:43,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620931637] [2021-03-25 09:52:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:43,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:43,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:43,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:43,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:43,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:43,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:43,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:43,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:43,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:43,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:43,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:43,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:43,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620931637] [2021-03-25 09:52:43,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:43,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:52:43,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138642726] [2021-03-25 09:52:43,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:52:43,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:43,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:52:43,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:52:43,676 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2021-03-25 09:52:43,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 130 transitions, 1449 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:43,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:43,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2021-03-25 09:52:43,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:44,032 INFO L129 PetriNetUnfolder]: 1309/2654 cut-off events. [2021-03-25 09:52:44,033 INFO L130 PetriNetUnfolder]: For 11194/12040 co-relation queries the response was YES. [2021-03-25 09:52:44,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11281 conditions, 2654 events. 1309/2654 cut-off events. For 11194/12040 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 19961 event pairs, 245 based on Foata normal form. 251/2780 useless extension candidates. Maximal degree in co-relation 11206. Up to 666 conditions per place. [2021-03-25 09:52:44,058 INFO L132 encePairwiseOnDemand]: 33/53 looper letters, 30 selfloop transitions, 104 changer transitions 0/151 dead transitions. [2021-03-25 09:52:44,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 151 transitions, 1887 flow [2021-03-25 09:52:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 09:52:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 09:52:44,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2021-03-25 09:52:44,059 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6576819407008087 [2021-03-25 09:52:44,059 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 244 transitions. [2021-03-25 09:52:44,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 244 transitions. [2021-03-25 09:52:44,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:44,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 244 transitions. [2021-03-25 09:52:44,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:44,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:44,061 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:44,061 INFO L185 Difference]: Start difference. First operand has 68 places, 130 transitions, 1449 flow. Second operand 7 states and 244 transitions. [2021-03-25 09:52:44,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 151 transitions, 1887 flow [2021-03-25 09:52:44,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 151 transitions, 1838 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 09:52:44,073 INFO L241 Difference]: Finished difference. Result has 74 places, 136 transitions, 1758 flow [2021-03-25 09:52:44,073 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1758, PETRI_PLACES=74, PETRI_TRANSITIONS=136} [2021-03-25 09:52:44,073 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 34 predicate places. [2021-03-25 09:52:44,073 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:44,073 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 136 transitions, 1758 flow [2021-03-25 09:52:44,074 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 136 transitions, 1758 flow [2021-03-25 09:52:44,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 136 transitions, 1758 flow [2021-03-25 09:52:44,169 INFO L129 PetriNetUnfolder]: 549/1425 cut-off events. [2021-03-25 09:52:44,169 INFO L130 PetriNetUnfolder]: For 5716/6056 co-relation queries the response was YES. [2021-03-25 09:52:44,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5912 conditions, 1425 events. 549/1425 cut-off events. For 5716/6056 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 11731 event pairs, 95 based on Foata normal form. 128/1485 useless extension candidates. Maximal degree in co-relation 5813. Up to 403 conditions per place. [2021-03-25 09:52:44,191 INFO L142 LiptonReduction]: Number of co-enabled transitions 1354 [2021-03-25 09:52:44,455 INFO L154 LiptonReduction]: Checked pairs total: 1698 [2021-03-25 09:52:44,455 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 09:52:44,456 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 383 [2021-03-25 09:52:44,458 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 136 transitions, 1762 flow [2021-03-25 09:52:44,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:44,458 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:44,458 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:44,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 09:52:44,459 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:44,459 INFO L82 PathProgramCache]: Analyzing trace with hash -120186838, now seen corresponding path program 2 times [2021-03-25 09:52:44,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:44,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767870535] [2021-03-25 09:52:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:44,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:44,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:44,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:44,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:44,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:44,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:44,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:44,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:44,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:44,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:44,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767870535] [2021-03-25 09:52:44,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:44,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 09:52:44,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996576324] [2021-03-25 09:52:44,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 09:52:44,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:44,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 09:52:44,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 09:52:44,512 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 55 [2021-03-25 09:52:44,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 136 transitions, 1762 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:44,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:44,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 55 [2021-03-25 09:52:44,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:44,865 INFO L129 PetriNetUnfolder]: 1303/2704 cut-off events. [2021-03-25 09:52:44,865 INFO L130 PetriNetUnfolder]: For 14774/15270 co-relation queries the response was YES. [2021-03-25 09:52:44,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12851 conditions, 2704 events. 1303/2704 cut-off events. For 14774/15270 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 20650 event pairs, 257 based on Foata normal form. 211/2791 useless extension candidates. Maximal degree in co-relation 12748. Up to 879 conditions per place. [2021-03-25 09:52:44,892 INFO L132 encePairwiseOnDemand]: 36/55 looper letters, 47 selfloop transitions, 95 changer transitions 0/159 dead transitions. [2021-03-25 09:52:44,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 159 transitions, 2290 flow [2021-03-25 09:52:44,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 09:52:44,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 09:52:44,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 209 transitions. [2021-03-25 09:52:44,894 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2021-03-25 09:52:44,894 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 209 transitions. [2021-03-25 09:52:44,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 209 transitions. [2021-03-25 09:52:44,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:44,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 209 transitions. [2021-03-25 09:52:44,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:44,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 55.0) internal successors, (385), 7 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:44,896 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 55.0) internal successors, (385), 7 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:44,896 INFO L185 Difference]: Start difference. First operand has 74 places, 136 transitions, 1762 flow. Second operand 6 states and 209 transitions. [2021-03-25 09:52:44,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 159 transitions, 2290 flow [2021-03-25 09:52:44,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 159 transitions, 2127 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 09:52:44,915 INFO L241 Difference]: Finished difference. Result has 76 places, 145 transitions, 1957 flow [2021-03-25 09:52:44,915 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1957, PETRI_PLACES=76, PETRI_TRANSITIONS=145} [2021-03-25 09:52:44,915 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2021-03-25 09:52:44,915 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:44,916 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 145 transitions, 1957 flow [2021-03-25 09:52:44,916 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 145 transitions, 1957 flow [2021-03-25 09:52:44,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 145 transitions, 1957 flow [2021-03-25 09:52:45,008 INFO L129 PetriNetUnfolder]: 564/1450 cut-off events. [2021-03-25 09:52:45,008 INFO L130 PetriNetUnfolder]: For 7364/8095 co-relation queries the response was YES. [2021-03-25 09:52:45,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6035 conditions, 1450 events. 564/1450 cut-off events. For 7364/8095 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11896 event pairs, 85 based on Foata normal form. 132/1504 useless extension candidates. Maximal degree in co-relation 5945. Up to 403 conditions per place. [2021-03-25 09:52:45,027 INFO L142 LiptonReduction]: Number of co-enabled transitions 1354 [2021-03-25 09:52:45,159 INFO L154 LiptonReduction]: Checked pairs total: 789 [2021-03-25 09:52:45,162 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:52:45,162 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 247 [2021-03-25 09:52:45,163 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 145 transitions, 1957 flow [2021-03-25 09:52:45,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:45,163 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:45,163 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:45,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 09:52:45,164 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:45,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:45,164 INFO L82 PathProgramCache]: Analyzing trace with hash -2112390243, now seen corresponding path program 2 times [2021-03-25 09:52:45,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:45,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888869649] [2021-03-25 09:52:45,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:45,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:45,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:45,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:45,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:45,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:45,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:45,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:45,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:45,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:45,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:45,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:45,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:45,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:45,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:45,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888869649] [2021-03-25 09:52:45,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:45,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:52:45,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583265784] [2021-03-25 09:52:45,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:52:45,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:45,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:52:45,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:52:45,244 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 55 [2021-03-25 09:52:45,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 145 transitions, 1957 flow. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:45,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:45,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 55 [2021-03-25 09:52:45,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:45,645 INFO L129 PetriNetUnfolder]: 1316/2713 cut-off events. [2021-03-25 09:52:45,646 INFO L130 PetriNetUnfolder]: For 16757/17560 co-relation queries the response was YES. [2021-03-25 09:52:45,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13120 conditions, 2713 events. 1316/2713 cut-off events. For 16757/17560 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 20700 event pairs, 236 based on Foata normal form. 309/2898 useless extension candidates. Maximal degree in co-relation 13043. Up to 675 conditions per place. [2021-03-25 09:52:45,668 INFO L132 encePairwiseOnDemand]: 36/55 looper letters, 39 selfloop transitions, 125 changer transitions 0/181 dead transitions. [2021-03-25 09:52:45,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 181 transitions, 2658 flow [2021-03-25 09:52:45,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 09:52:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 09:52:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 309 transitions. [2021-03-25 09:52:45,670 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6242424242424243 [2021-03-25 09:52:45,670 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 309 transitions. [2021-03-25 09:52:45,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 309 transitions. [2021-03-25 09:52:45,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:45,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 309 transitions. [2021-03-25 09:52:45,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 34.333333333333336) internal successors, (309), 9 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:45,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 55.0) internal successors, (550), 10 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:45,672 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 55.0) internal successors, (550), 10 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:45,672 INFO L185 Difference]: Start difference. First operand has 76 places, 145 transitions, 1957 flow. Second operand 9 states and 309 transitions. [2021-03-25 09:52:45,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 181 transitions, 2658 flow [2021-03-25 09:52:45,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 181 transitions, 2510 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-25 09:52:45,689 INFO L241 Difference]: Finished difference. Result has 82 places, 157 transitions, 2302 flow [2021-03-25 09:52:45,689 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2302, PETRI_PLACES=82, PETRI_TRANSITIONS=157} [2021-03-25 09:52:45,689 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 42 predicate places. [2021-03-25 09:52:45,689 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:45,690 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 157 transitions, 2302 flow [2021-03-25 09:52:45,690 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 157 transitions, 2302 flow [2021-03-25 09:52:45,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 157 transitions, 2302 flow [2021-03-25 09:52:45,775 INFO L129 PetriNetUnfolder]: 569/1462 cut-off events. [2021-03-25 09:52:45,775 INFO L130 PetriNetUnfolder]: For 8824/9473 co-relation queries the response was YES. [2021-03-25 09:52:45,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6455 conditions, 1462 events. 569/1462 cut-off events. For 8824/9473 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 12170 event pairs, 96 based on Foata normal form. 125/1518 useless extension candidates. Maximal degree in co-relation 6362. Up to 413 conditions per place. [2021-03-25 09:52:45,788 INFO L142 LiptonReduction]: Number of co-enabled transitions 1424 [2021-03-25 09:52:45,872 INFO L154 LiptonReduction]: Checked pairs total: 832 [2021-03-25 09:52:45,872 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:52:45,873 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 184 [2021-03-25 09:52:45,873 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 157 transitions, 2302 flow [2021-03-25 09:52:45,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:45,873 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:45,873 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:45,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 09:52:45,874 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:45,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:45,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1693733355, now seen corresponding path program 3 times [2021-03-25 09:52:45,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:45,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669439720] [2021-03-25 09:52:45,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:45,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:45,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:45,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:45,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:45,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:45,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:45,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:45,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:45,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:45,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669439720] [2021-03-25 09:52:45,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:45,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 09:52:45,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573459442] [2021-03-25 09:52:45,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:52:45,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:45,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:52:45,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:52:45,898 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 55 [2021-03-25 09:52:45,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 157 transitions, 2302 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:45,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:45,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 55 [2021-03-25 09:52:45,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:46,163 INFO L129 PetriNetUnfolder]: 928/2117 cut-off events. [2021-03-25 09:52:46,164 INFO L130 PetriNetUnfolder]: For 13421/13822 co-relation queries the response was YES. [2021-03-25 09:52:46,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10055 conditions, 2117 events. 928/2117 cut-off events. For 13421/13822 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 16021 event pairs, 366 based on Foata normal form. 115/2160 useless extension candidates. Maximal degree in co-relation 9914. Up to 1327 conditions per place. [2021-03-25 09:52:46,182 INFO L132 encePairwiseOnDemand]: 46/55 looper letters, 88 selfloop transitions, 55 changer transitions 0/160 dead transitions. [2021-03-25 09:52:46,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 160 transitions, 2513 flow [2021-03-25 09:52:46,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:52:46,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:52:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2021-03-25 09:52:46,184 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5854545454545454 [2021-03-25 09:52:46,184 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 161 transitions. [2021-03-25 09:52:46,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 161 transitions. [2021-03-25 09:52:46,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:46,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 161 transitions. [2021-03-25 09:52:46,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:46,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:46,185 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:46,185 INFO L185 Difference]: Start difference. First operand has 82 places, 157 transitions, 2302 flow. Second operand 5 states and 161 transitions. [2021-03-25 09:52:46,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 160 transitions, 2513 flow [2021-03-25 09:52:46,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 160 transitions, 2438 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-25 09:52:46,202 INFO L241 Difference]: Finished difference. Result has 85 places, 151 transitions, 2235 flow [2021-03-25 09:52:46,202 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2235, PETRI_PLACES=85, PETRI_TRANSITIONS=151} [2021-03-25 09:52:46,203 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 45 predicate places. [2021-03-25 09:52:46,203 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:46,203 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 151 transitions, 2235 flow [2021-03-25 09:52:46,203 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 151 transitions, 2235 flow [2021-03-25 09:52:46,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 151 transitions, 2235 flow [2021-03-25 09:52:46,290 INFO L129 PetriNetUnfolder]: 396/1154 cut-off events. [2021-03-25 09:52:46,290 INFO L130 PetriNetUnfolder]: For 5864/6195 co-relation queries the response was YES. [2021-03-25 09:52:46,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4725 conditions, 1154 events. 396/1154 cut-off events. For 5864/6195 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9218 event pairs, 71 based on Foata normal form. 79/1192 useless extension candidates. Maximal degree in co-relation 4619. Up to 279 conditions per place. [2021-03-25 09:52:46,306 INFO L142 LiptonReduction]: Number of co-enabled transitions 1142 [2021-03-25 09:52:46,563 INFO L154 LiptonReduction]: Checked pairs total: 1851 [2021-03-25 09:52:46,563 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 09:52:46,563 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 360 [2021-03-25 09:52:46,563 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 151 transitions, 2241 flow [2021-03-25 09:52:46,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:46,564 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:46,564 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:46,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 09:52:46,564 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:46,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:46,564 INFO L82 PathProgramCache]: Analyzing trace with hash -443437508, now seen corresponding path program 5 times [2021-03-25 09:52:46,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:46,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694623436] [2021-03-25 09:52:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:46,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:46,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:46,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:46,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:46,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:46,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:46,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:46,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:46,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:46,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:46,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:46,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:46,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694623436] [2021-03-25 09:52:46,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:46,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:52:46,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599657908] [2021-03-25 09:52:46,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:52:46,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:46,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:52:46,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:52:46,625 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 58 [2021-03-25 09:52:46,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 151 transitions, 2241 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:46,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:46,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 58 [2021-03-25 09:52:46,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:46,937 INFO L129 PetriNetUnfolder]: 937/2175 cut-off events. [2021-03-25 09:52:46,937 INFO L130 PetriNetUnfolder]: For 13656/14052 co-relation queries the response was YES. [2021-03-25 09:52:46,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10499 conditions, 2175 events. 937/2175 cut-off events. For 13656/14052 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 16995 event pairs, 206 based on Foata normal form. 275/2369 useless extension candidates. Maximal degree in co-relation 10378. Up to 735 conditions per place. [2021-03-25 09:52:46,954 INFO L132 encePairwiseOnDemand]: 45/58 looper letters, 59 selfloop transitions, 119 changer transitions 4/199 dead transitions. [2021-03-25 09:52:46,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 199 transitions, 3159 flow [2021-03-25 09:52:46,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:52:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:52:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 272 transitions. [2021-03-25 09:52:46,955 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2021-03-25 09:52:46,956 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 272 transitions. [2021-03-25 09:52:46,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 272 transitions. [2021-03-25 09:52:46,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:46,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 272 transitions. [2021-03-25 09:52:46,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:46,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 58.0) internal successors, (522), 9 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:46,957 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 58.0) internal successors, (522), 9 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:46,958 INFO L185 Difference]: Start difference. First operand has 85 places, 151 transitions, 2241 flow. Second operand 8 states and 272 transitions. [2021-03-25 09:52:46,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 199 transitions, 3159 flow [2021-03-25 09:52:46,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 199 transitions, 3104 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 09:52:46,978 INFO L241 Difference]: Finished difference. Result has 92 places, 169 transitions, 2730 flow [2021-03-25 09:52:46,979 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=2186, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2730, PETRI_PLACES=92, PETRI_TRANSITIONS=169} [2021-03-25 09:52:46,979 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2021-03-25 09:52:46,979 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:46,979 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 169 transitions, 2730 flow [2021-03-25 09:52:46,979 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 169 transitions, 2730 flow [2021-03-25 09:52:46,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 169 transitions, 2730 flow [2021-03-25 09:52:47,098 INFO L129 PetriNetUnfolder]: 390/1210 cut-off events. [2021-03-25 09:52:47,098 INFO L130 PetriNetUnfolder]: For 8317/8712 co-relation queries the response was YES. [2021-03-25 09:52:47,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5377 conditions, 1210 events. 390/1210 cut-off events. For 8317/8712 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10065 event pairs, 64 based on Foata normal form. 86/1261 useless extension candidates. Maximal degree in co-relation 5262. Up to 303 conditions per place. [2021-03-25 09:52:47,112 INFO L142 LiptonReduction]: Number of co-enabled transitions 1170 [2021-03-25 09:52:47,283 INFO L154 LiptonReduction]: Checked pairs total: 1709 [2021-03-25 09:52:47,284 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:52:47,284 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 305 [2021-03-25 09:52:47,284 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 169 transitions, 2732 flow [2021-03-25 09:52:47,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:47,284 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:47,284 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:47,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 09:52:47,285 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:47,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:47,285 INFO L82 PathProgramCache]: Analyzing trace with hash 163530776, now seen corresponding path program 1 times [2021-03-25 09:52:47,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:47,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337597950] [2021-03-25 09:52:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:47,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:47,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:47,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:47,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:47,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:47,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:47,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:47,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:47,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:47,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:47,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:47,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:47,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337597950] [2021-03-25 09:52:47,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:47,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:52:47,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872049169] [2021-03-25 09:52:47,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:52:47,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:47,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:52:47,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:52:47,320 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2021-03-25 09:52:47,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 169 transitions, 2732 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:47,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:47,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2021-03-25 09:52:47,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:47,648 INFO L129 PetriNetUnfolder]: 788/1907 cut-off events. [2021-03-25 09:52:47,648 INFO L130 PetriNetUnfolder]: For 14615/14974 co-relation queries the response was YES. [2021-03-25 09:52:47,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9938 conditions, 1907 events. 788/1907 cut-off events. For 14615/14974 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 14836 event pairs, 192 based on Foata normal form. 235/2082 useless extension candidates. Maximal degree in co-relation 9822. Up to 680 conditions per place. [2021-03-25 09:52:47,660 INFO L132 encePairwiseOnDemand]: 45/59 looper letters, 58 selfloop transitions, 126 changer transitions 8/209 dead transitions. [2021-03-25 09:52:47,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 209 transitions, 3598 flow [2021-03-25 09:52:47,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:52:47,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:52:47,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 272 transitions. [2021-03-25 09:52:47,662 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2021-03-25 09:52:47,662 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 272 transitions. [2021-03-25 09:52:47,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 272 transitions. [2021-03-25 09:52:47,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:47,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 272 transitions. [2021-03-25 09:52:47,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:47,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:47,664 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:47,664 INFO L185 Difference]: Start difference. First operand has 92 places, 169 transitions, 2732 flow. Second operand 8 states and 272 transitions. [2021-03-25 09:52:47,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 209 transitions, 3598 flow [2021-03-25 09:52:47,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 209 transitions, 3277 flow, removed 15 selfloop flow, removed 6 redundant places. [2021-03-25 09:52:47,692 INFO L241 Difference]: Finished difference. Result has 95 places, 175 transitions, 2815 flow [2021-03-25 09:52:47,692 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=2420, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2815, PETRI_PLACES=95, PETRI_TRANSITIONS=175} [2021-03-25 09:52:47,692 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 55 predicate places. [2021-03-25 09:52:47,692 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:47,692 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 175 transitions, 2815 flow [2021-03-25 09:52:47,692 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 175 transitions, 2815 flow [2021-03-25 09:52:47,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 175 transitions, 2815 flow [2021-03-25 09:52:47,770 INFO L129 PetriNetUnfolder]: 326/1093 cut-off events. [2021-03-25 09:52:47,770 INFO L130 PetriNetUnfolder]: For 7410/7697 co-relation queries the response was YES. [2021-03-25 09:52:47,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4933 conditions, 1093 events. 326/1093 cut-off events. For 7410/7697 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9232 event pairs, 54 based on Foata normal form. 69/1126 useless extension candidates. Maximal degree in co-relation 4831. Up to 259 conditions per place. [2021-03-25 09:52:47,781 INFO L142 LiptonReduction]: Number of co-enabled transitions 1100 [2021-03-25 09:52:47,929 INFO L154 LiptonReduction]: Checked pairs total: 1688 [2021-03-25 09:52:47,929 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 09:52:47,929 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 237 [2021-03-25 09:52:47,930 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 175 transitions, 2819 flow [2021-03-25 09:52:47,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:47,930 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:47,930 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:47,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 09:52:47,930 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:47,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:47,930 INFO L82 PathProgramCache]: Analyzing trace with hash -141101359, now seen corresponding path program 1 times [2021-03-25 09:52:47,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:47,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537850685] [2021-03-25 09:52:47,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:47,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:47,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:47,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:47,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:47,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:47,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:47,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:47,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:47,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:47,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:47,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:47,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:47,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537850685] [2021-03-25 09:52:47,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:47,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:52:47,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517707688] [2021-03-25 09:52:47,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:52:47,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:47,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:52:47,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:52:47,964 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2021-03-25 09:52:47,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 175 transitions, 2819 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:47,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:47,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2021-03-25 09:52:47,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:48,295 INFO L129 PetriNetUnfolder]: 626/1625 cut-off events. [2021-03-25 09:52:48,295 INFO L130 PetriNetUnfolder]: For 11722/11990 co-relation queries the response was YES. [2021-03-25 09:52:48,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8473 conditions, 1625 events. 626/1625 cut-off events. For 11722/11990 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12640 event pairs, 171 based on Foata normal form. 159/1736 useless extension candidates. Maximal degree in co-relation 8366. Up to 606 conditions per place. [2021-03-25 09:52:48,302 INFO L132 encePairwiseOnDemand]: 45/61 looper letters, 58 selfloop transitions, 128 changer transitions 11/214 dead transitions. [2021-03-25 09:52:48,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 214 transitions, 3691 flow [2021-03-25 09:52:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:52:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:52:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2021-03-25 09:52:48,304 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5635245901639344 [2021-03-25 09:52:48,304 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 275 transitions. [2021-03-25 09:52:48,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 275 transitions. [2021-03-25 09:52:48,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:48,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 275 transitions. [2021-03-25 09:52:48,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:48,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:48,306 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:48,306 INFO L185 Difference]: Start difference. First operand has 95 places, 175 transitions, 2819 flow. Second operand 8 states and 275 transitions. [2021-03-25 09:52:48,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 214 transitions, 3691 flow [2021-03-25 09:52:48,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 214 transitions, 3516 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-25 09:52:48,329 INFO L241 Difference]: Finished difference. Result has 99 places, 177 transitions, 2971 flow [2021-03-25 09:52:48,329 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2607, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2971, PETRI_PLACES=99, PETRI_TRANSITIONS=177} [2021-03-25 09:52:48,329 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 59 predicate places. [2021-03-25 09:52:48,329 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:48,330 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 177 transitions, 2971 flow [2021-03-25 09:52:48,330 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 177 transitions, 2971 flow [2021-03-25 09:52:48,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 177 transitions, 2971 flow [2021-03-25 09:52:48,398 INFO L129 PetriNetUnfolder]: 252/934 cut-off events. [2021-03-25 09:52:48,398 INFO L130 PetriNetUnfolder]: For 6762/7053 co-relation queries the response was YES. [2021-03-25 09:52:48,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4344 conditions, 934 events. 252/934 cut-off events. For 6762/7053 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7875 event pairs, 47 based on Foata normal form. 56/962 useless extension candidates. Maximal degree in co-relation 4249. Up to 211 conditions per place. [2021-03-25 09:52:48,407 INFO L142 LiptonReduction]: Number of co-enabled transitions 942 [2021-03-25 09:52:48,562 INFO L154 LiptonReduction]: Checked pairs total: 1852 [2021-03-25 09:52:48,562 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 09:52:48,562 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 233 [2021-03-25 09:52:48,563 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 177 transitions, 2981 flow [2021-03-25 09:52:48,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:48,563 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:48,563 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:48,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 09:52:48,563 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:48,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:48,564 INFO L82 PathProgramCache]: Analyzing trace with hash 835737220, now seen corresponding path program 2 times [2021-03-25 09:52:48,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:48,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384570747] [2021-03-25 09:52:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:48,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:48,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:48,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:48,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:48,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:48,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:48,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:48,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:48,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:48,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:48,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:48,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:48,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384570747] [2021-03-25 09:52:48,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:48,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:52:48,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732391044] [2021-03-25 09:52:48,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:52:48,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:48,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:52:48,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:52:48,604 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 66 [2021-03-25 09:52:48,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 177 transitions, 2981 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:48,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:48,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 66 [2021-03-25 09:52:48,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:48,826 INFO L129 PetriNetUnfolder]: 441/1223 cut-off events. [2021-03-25 09:52:48,826 INFO L130 PetriNetUnfolder]: For 8668/8816 co-relation queries the response was YES. [2021-03-25 09:52:48,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6511 conditions, 1223 events. 441/1223 cut-off events. For 8668/8816 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9225 event pairs, 157 based on Foata normal form. 85/1277 useless extension candidates. Maximal degree in co-relation 6428. Up to 501 conditions per place. [2021-03-25 09:52:48,832 INFO L132 encePairwiseOnDemand]: 56/66 looper letters, 50 selfloop transitions, 84 changer transitions 36/187 dead transitions. [2021-03-25 09:52:48,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 187 transitions, 3306 flow [2021-03-25 09:52:48,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:52:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:52:48,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2021-03-25 09:52:48,833 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5037878787878788 [2021-03-25 09:52:48,833 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 266 transitions. [2021-03-25 09:52:48,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 266 transitions. [2021-03-25 09:52:48,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:48,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 266 transitions. [2021-03-25 09:52:48,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.25) internal successors, (266), 8 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:48,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 66.0) internal successors, (594), 9 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:48,836 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 66.0) internal successors, (594), 9 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:48,836 INFO L185 Difference]: Start difference. First operand has 99 places, 177 transitions, 2981 flow. Second operand 8 states and 266 transitions. [2021-03-25 09:52:48,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 187 transitions, 3306 flow [2021-03-25 09:52:48,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 187 transitions, 3251 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-03-25 09:52:48,856 INFO L241 Difference]: Finished difference. Result has 106 places, 131 transitions, 2217 flow [2021-03-25 09:52:48,856 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2217, PETRI_PLACES=106, PETRI_TRANSITIONS=131} [2021-03-25 09:52:48,856 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 66 predicate places. [2021-03-25 09:52:48,856 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:48,856 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 131 transitions, 2217 flow [2021-03-25 09:52:48,857 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 131 transitions, 2217 flow [2021-03-25 09:52:48,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 131 transitions, 2217 flow [2021-03-25 09:52:48,884 INFO L129 PetriNetUnfolder]: 145/564 cut-off events. [2021-03-25 09:52:48,884 INFO L130 PetriNetUnfolder]: For 3940/3993 co-relation queries the response was YES. [2021-03-25 09:52:48,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2554 conditions, 564 events. 145/564 cut-off events. For 3940/3993 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4181 event pairs, 45 based on Foata normal form. 5/550 useless extension candidates. Maximal degree in co-relation 2479. Up to 128 conditions per place. [2021-03-25 09:52:48,888 INFO L142 LiptonReduction]: Number of co-enabled transitions 560 [2021-03-25 09:52:48,902 INFO L154 LiptonReduction]: Checked pairs total: 331 [2021-03-25 09:52:48,902 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:52:48,902 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 46 [2021-03-25 09:52:48,903 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 131 transitions, 2217 flow [2021-03-25 09:52:48,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:48,903 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:48,903 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:48,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 09:52:48,903 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:48,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:48,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1765290486, now seen corresponding path program 6 times [2021-03-25 09:52:48,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:48,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815652796] [2021-03-25 09:52:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:48,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:48,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:48,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:48,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:48,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:48,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:48,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:48,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:48,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:48,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:48,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:48,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:48,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:48,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:48,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:48,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:48,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815652796] [2021-03-25 09:52:48,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:48,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:52:48,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625005833] [2021-03-25 09:52:48,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:52:48,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:48,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:52:48,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:52:48,946 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 66 [2021-03-25 09:52:48,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 131 transitions, 2217 flow. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:48,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:48,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 66 [2021-03-25 09:52:48,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:49,171 INFO L129 PetriNetUnfolder]: 386/1035 cut-off events. [2021-03-25 09:52:49,172 INFO L130 PetriNetUnfolder]: For 7600/7675 co-relation queries the response was YES. [2021-03-25 09:52:49,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5267 conditions, 1035 events. 386/1035 cut-off events. For 7600/7675 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7262 event pairs, 154 based on Foata normal form. 23/1025 useless extension candidates. Maximal degree in co-relation 5182. Up to 410 conditions per place. [2021-03-25 09:52:49,177 INFO L132 encePairwiseOnDemand]: 56/66 looper letters, 35 selfloop transitions, 79 changer transitions 28/159 dead transitions. [2021-03-25 09:52:49,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 159 transitions, 2830 flow [2021-03-25 09:52:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 09:52:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 09:52:49,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-03-25 09:52:49,179 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5 [2021-03-25 09:52:49,179 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-03-25 09:52:49,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-03-25 09:52:49,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:49,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-03-25 09:52:49,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:49,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:49,181 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:49,181 INFO L185 Difference]: Start difference. First operand has 106 places, 131 transitions, 2217 flow. Second operand 9 states and 297 transitions. [2021-03-25 09:52:49,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 159 transitions, 2830 flow [2021-03-25 09:52:49,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 159 transitions, 2658 flow, removed 28 selfloop flow, removed 7 redundant places. [2021-03-25 09:52:49,198 INFO L241 Difference]: Finished difference. Result has 108 places, 111 transitions, 1864 flow [2021-03-25 09:52:49,199 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=2076, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1864, PETRI_PLACES=108, PETRI_TRANSITIONS=111} [2021-03-25 09:52:49,199 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 68 predicate places. [2021-03-25 09:52:49,199 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:49,199 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 111 transitions, 1864 flow [2021-03-25 09:52:49,199 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 111 transitions, 1864 flow [2021-03-25 09:52:49,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 111 transitions, 1864 flow [2021-03-25 09:52:49,224 INFO L129 PetriNetUnfolder]: 129/520 cut-off events. [2021-03-25 09:52:49,224 INFO L130 PetriNetUnfolder]: For 3724/3767 co-relation queries the response was YES. [2021-03-25 09:52:49,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 520 events. 129/520 cut-off events. For 3724/3767 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3747 event pairs, 48 based on Foata normal form. 5/500 useless extension candidates. Maximal degree in co-relation 2167. Up to 120 conditions per place. [2021-03-25 09:52:49,227 INFO L142 LiptonReduction]: Number of co-enabled transitions 524 [2021-03-25 09:52:49,234 INFO L154 LiptonReduction]: Checked pairs total: 250 [2021-03-25 09:52:49,234 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:52:49,235 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-25 09:52:49,235 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 111 transitions, 1864 flow [2021-03-25 09:52:49,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:49,235 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:49,235 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:49,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 09:52:49,235 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:49,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1637174018, now seen corresponding path program 7 times [2021-03-25 09:52:49,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:49,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399518356] [2021-03-25 09:52:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:49,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:49,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:52:49,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:49,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399518356] [2021-03-25 09:52:49,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:49,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:52:49,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139994595] [2021-03-25 09:52:49,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:52:49,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:49,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:52:49,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:52:49,275 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 66 [2021-03-25 09:52:49,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 111 transitions, 1864 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:49,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:49,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 66 [2021-03-25 09:52:49,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:49,440 INFO L129 PetriNetUnfolder]: 400/1068 cut-off events. [2021-03-25 09:52:49,440 INFO L130 PetriNetUnfolder]: For 7345/7425 co-relation queries the response was YES. [2021-03-25 09:52:49,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5087 conditions, 1068 events. 400/1068 cut-off events. For 7345/7425 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7523 event pairs, 40 based on Foata normal form. 32/1049 useless extension candidates. Maximal degree in co-relation 4996. Up to 286 conditions per place. [2021-03-25 09:52:49,446 INFO L132 encePairwiseOnDemand]: 56/66 looper letters, 37 selfloop transitions, 100 changer transitions 1/155 dead transitions. [2021-03-25 09:52:49,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 155 transitions, 2503 flow [2021-03-25 09:52:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 09:52:49,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 09:52:49,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2021-03-25 09:52:49,448 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.49783549783549785 [2021-03-25 09:52:49,448 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 230 transitions. [2021-03-25 09:52:49,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 230 transitions. [2021-03-25 09:52:49,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:49,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 230 transitions. [2021-03-25 09:52:49,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:49,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:49,450 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:49,450 INFO L185 Difference]: Start difference. First operand has 108 places, 111 transitions, 1864 flow. Second operand 7 states and 230 transitions. [2021-03-25 09:52:49,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 155 transitions, 2503 flow [2021-03-25 09:52:49,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 155 transitions, 2329 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-03-25 09:52:49,467 INFO L241 Difference]: Finished difference. Result has 110 places, 134 transitions, 2213 flow [2021-03-25 09:52:49,467 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2213, PETRI_PLACES=110, PETRI_TRANSITIONS=134} [2021-03-25 09:52:49,467 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 70 predicate places. [2021-03-25 09:52:49,467 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:49,467 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 134 transitions, 2213 flow [2021-03-25 09:52:49,467 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 134 transitions, 2213 flow [2021-03-25 09:52:49,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 134 transitions, 2213 flow [2021-03-25 09:52:49,505 INFO L129 PetriNetUnfolder]: 178/667 cut-off events. [2021-03-25 09:52:49,505 INFO L130 PetriNetUnfolder]: For 5171/5265 co-relation queries the response was YES. [2021-03-25 09:52:49,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3015 conditions, 667 events. 178/667 cut-off events. For 5171/5265 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4982 event pairs, 14 based on Foata normal form. 2/649 useless extension candidates. Maximal degree in co-relation 2915. Up to 177 conditions per place. [2021-03-25 09:52:49,509 INFO L142 LiptonReduction]: Number of co-enabled transitions 688 [2021-03-25 09:52:49,551 INFO L154 LiptonReduction]: Checked pairs total: 802 [2021-03-25 09:52:49,551 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 09:52:49,551 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 84 [2021-03-25 09:52:49,551 INFO L480 AbstractCegarLoop]: Abstraction has has 110 places, 134 transitions, 2217 flow [2021-03-25 09:52:49,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:49,552 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:49,552 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:49,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 09:52:49,552 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:49,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:49,552 INFO L82 PathProgramCache]: Analyzing trace with hash -731283668, now seen corresponding path program 8 times [2021-03-25 09:52:49,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:49,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513512397] [2021-03-25 09:52:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:49,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:49,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:49,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513512397] [2021-03-25 09:52:49,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:49,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:52:49,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454002906] [2021-03-25 09:52:49,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:52:49,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:49,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:52:49,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:52:49,598 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 68 [2021-03-25 09:52:49,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 134 transitions, 2217 flow. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:49,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:49,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 68 [2021-03-25 09:52:49,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:49,820 INFO L129 PetriNetUnfolder]: 379/1038 cut-off events. [2021-03-25 09:52:49,820 INFO L130 PetriNetUnfolder]: For 9222/9340 co-relation queries the response was YES. [2021-03-25 09:52:49,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5522 conditions, 1038 events. 379/1038 cut-off events. For 9222/9340 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7337 event pairs, 108 based on Foata normal form. 13/1019 useless extension candidates. Maximal degree in co-relation 5427. Up to 500 conditions per place. [2021-03-25 09:52:49,825 INFO L132 encePairwiseOnDemand]: 57/68 looper letters, 59 selfloop transitions, 74 changer transitions 7/157 dead transitions. [2021-03-25 09:52:49,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 157 transitions, 2726 flow [2021-03-25 09:52:49,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 09:52:49,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 09:52:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-03-25 09:52:49,827 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.48366013071895425 [2021-03-25 09:52:49,827 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-03-25 09:52:49,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-03-25 09:52:49,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:49,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-03-25 09:52:49,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.888888888888886) internal successors, (296), 9 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:49,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 68.0) internal successors, (680), 10 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:49,829 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 68.0) internal successors, (680), 10 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:49,829 INFO L185 Difference]: Start difference. First operand has 110 places, 134 transitions, 2217 flow. Second operand 9 states and 296 transitions. [2021-03-25 09:52:49,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 157 transitions, 2726 flow [2021-03-25 09:52:49,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 157 transitions, 2605 flow, removed 42 selfloop flow, removed 4 redundant places. [2021-03-25 09:52:49,849 INFO L241 Difference]: Finished difference. Result has 115 places, 129 transitions, 2149 flow [2021-03-25 09:52:49,849 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2149, PETRI_PLACES=115, PETRI_TRANSITIONS=129} [2021-03-25 09:52:49,849 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 75 predicate places. [2021-03-25 09:52:49,849 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:49,850 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 129 transitions, 2149 flow [2021-03-25 09:52:49,850 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 129 transitions, 2149 flow [2021-03-25 09:52:49,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 115 places, 129 transitions, 2149 flow [2021-03-25 09:52:49,892 INFO L129 PetriNetUnfolder]: 170/631 cut-off events. [2021-03-25 09:52:49,892 INFO L130 PetriNetUnfolder]: For 5225/5347 co-relation queries the response was YES. [2021-03-25 09:52:49,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2741 conditions, 631 events. 170/631 cut-off events. For 5225/5347 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4656 event pairs, 17 based on Foata normal form. 3/614 useless extension candidates. Maximal degree in co-relation 2644. Up to 172 conditions per place. [2021-03-25 09:52:49,896 INFO L142 LiptonReduction]: Number of co-enabled transitions 658 [2021-03-25 09:52:49,933 INFO L154 LiptonReduction]: Checked pairs total: 755 [2021-03-25 09:52:49,933 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:52:49,933 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 84 [2021-03-25 09:52:49,934 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 129 transitions, 2151 flow [2021-03-25 09:52:49,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:49,934 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:49,934 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:49,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-25 09:52:49,934 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:49,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1265034710, now seen corresponding path program 1 times [2021-03-25 09:52:49,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:49,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429744503] [2021-03-25 09:52:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:49,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:49,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:49,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:49,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:49,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429744503] [2021-03-25 09:52:49,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:49,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 09:52:49,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312813510] [2021-03-25 09:52:49,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 09:52:49,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:49,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 09:52:49,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-25 09:52:49,982 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 69 [2021-03-25 09:52:49,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 129 transitions, 2151 flow. Second operand has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:49,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:49,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 69 [2021-03-25 09:52:49,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:50,243 INFO L129 PetriNetUnfolder]: 373/1022 cut-off events. [2021-03-25 09:52:50,243 INFO L130 PetriNetUnfolder]: For 8925/9062 co-relation queries the response was YES. [2021-03-25 09:52:50,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5209 conditions, 1022 events. 373/1022 cut-off events. For 8925/9062 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7193 event pairs, 106 based on Foata normal form. 11/1000 useless extension candidates. Maximal degree in co-relation 5115. Up to 500 conditions per place. [2021-03-25 09:52:50,249 INFO L132 encePairwiseOnDemand]: 57/69 looper letters, 59 selfloop transitions, 69 changer transitions 10/155 dead transitions. [2021-03-25 09:52:50,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 155 transitions, 2664 flow [2021-03-25 09:52:50,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 09:52:50,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 09:52:50,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 380 transitions. [2021-03-25 09:52:50,251 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.45893719806763283 [2021-03-25 09:52:50,251 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 380 transitions. [2021-03-25 09:52:50,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 380 transitions. [2021-03-25 09:52:50,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:50,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 380 transitions. [2021-03-25 09:52:50,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 31.666666666666668) internal successors, (380), 12 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:50,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 69.0) internal successors, (897), 13 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:50,253 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 69.0) internal successors, (897), 13 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:50,253 INFO L185 Difference]: Start difference. First operand has 115 places, 129 transitions, 2151 flow. Second operand 12 states and 380 transitions. [2021-03-25 09:52:50,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 155 transitions, 2664 flow [2021-03-25 09:52:50,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 155 transitions, 2581 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-03-25 09:52:50,273 INFO L241 Difference]: Finished difference. Result has 120 places, 124 transitions, 2095 flow [2021-03-25 09:52:50,273 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2095, PETRI_PLACES=120, PETRI_TRANSITIONS=124} [2021-03-25 09:52:50,273 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 80 predicate places. [2021-03-25 09:52:50,273 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:50,273 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 124 transitions, 2095 flow [2021-03-25 09:52:50,273 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 124 transitions, 2095 flow [2021-03-25 09:52:50,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 115 places, 124 transitions, 2095 flow [2021-03-25 09:52:50,314 INFO L129 PetriNetUnfolder]: 168/619 cut-off events. [2021-03-25 09:52:50,314 INFO L130 PetriNetUnfolder]: For 5227/5340 co-relation queries the response was YES. [2021-03-25 09:52:50,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2706 conditions, 619 events. 168/619 cut-off events. For 5227/5340 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4547 event pairs, 17 based on Foata normal form. 3/602 useless extension candidates. Maximal degree in co-relation 2611. Up to 172 conditions per place. [2021-03-25 09:52:50,319 INFO L142 LiptonReduction]: Number of co-enabled transitions 650 [2021-03-25 09:52:50,352 INFO L154 LiptonReduction]: Checked pairs total: 741 [2021-03-25 09:52:50,352 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:52:50,353 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 80 [2021-03-25 09:52:50,353 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 124 transitions, 2097 flow [2021-03-25 09:52:50,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:50,353 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:50,353 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:50,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-25 09:52:50,353 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:50,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:50,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1157559616, now seen corresponding path program 2 times [2021-03-25 09:52:50,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:50,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781441430] [2021-03-25 09:52:50,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:50,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:50,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:50,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:50,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:50,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:50,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:50,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:50,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:50,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781441430] [2021-03-25 09:52:50,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:50,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 09:52:50,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118916405] [2021-03-25 09:52:50,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 09:52:50,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:50,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 09:52:50,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-25 09:52:50,401 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2021-03-25 09:52:50,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 124 transitions, 2097 flow. Second operand has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:50,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:50,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2021-03-25 09:52:50,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:50,669 INFO L129 PetriNetUnfolder]: 366/1003 cut-off events. [2021-03-25 09:52:50,670 INFO L130 PetriNetUnfolder]: For 9218/9363 co-relation queries the response was YES. [2021-03-25 09:52:50,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5149 conditions, 1003 events. 366/1003 cut-off events. For 9218/9363 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7058 event pairs, 105 based on Foata normal form. 19/990 useless extension candidates. Maximal degree in co-relation 5058. Up to 498 conditions per place. [2021-03-25 09:52:50,675 INFO L132 encePairwiseOnDemand]: 58/70 looper letters, 53 selfloop transitions, 53 changer transitions 33/156 dead transitions. [2021-03-25 09:52:50,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 156 transitions, 2689 flow [2021-03-25 09:52:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 09:52:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 09:52:50,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 386 transitions. [2021-03-25 09:52:50,677 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4595238095238095 [2021-03-25 09:52:50,677 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 386 transitions. [2021-03-25 09:52:50,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 386 transitions. [2021-03-25 09:52:50,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:50,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 386 transitions. [2021-03-25 09:52:50,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 32.166666666666664) internal successors, (386), 12 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:50,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 70.0) internal successors, (910), 13 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:50,679 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 70.0) internal successors, (910), 13 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:50,679 INFO L185 Difference]: Start difference. First operand has 115 places, 124 transitions, 2097 flow. Second operand 12 states and 386 transitions. [2021-03-25 09:52:50,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 156 transitions, 2689 flow [2021-03-25 09:52:50,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 156 transitions, 2464 flow, removed 11 selfloop flow, removed 10 redundant places. [2021-03-25 09:52:50,698 INFO L241 Difference]: Finished difference. Result has 117 places, 106 transitions, 1636 flow [2021-03-25 09:52:50,699 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1636, PETRI_PLACES=117, PETRI_TRANSITIONS=106} [2021-03-25 09:52:50,699 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 77 predicate places. [2021-03-25 09:52:50,699 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:50,699 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 106 transitions, 1636 flow [2021-03-25 09:52:50,699 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 106 transitions, 1636 flow [2021-03-25 09:52:50,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 109 places, 106 transitions, 1636 flow [2021-03-25 09:52:50,728 INFO L129 PetriNetUnfolder]: 158/573 cut-off events. [2021-03-25 09:52:50,728 INFO L130 PetriNetUnfolder]: For 4157/4288 co-relation queries the response was YES. [2021-03-25 09:52:50,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 573 events. 158/573 cut-off events. For 4157/4288 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4077 event pairs, 14 based on Foata normal form. 2/552 useless extension candidates. Maximal degree in co-relation 2303. Up to 167 conditions per place. [2021-03-25 09:52:50,733 INFO L142 LiptonReduction]: Number of co-enabled transitions 602 [2021-03-25 09:52:50,742 INFO L154 LiptonReduction]: Checked pairs total: 301 [2021-03-25 09:52:50,742 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:52:50,742 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-25 09:52:50,742 INFO L480 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 1636 flow [2021-03-25 09:52:50,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:50,742 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:50,743 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:50,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-25 09:52:50,743 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:50,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:50,743 INFO L82 PathProgramCache]: Analyzing trace with hash -530926214, now seen corresponding path program 3 times [2021-03-25 09:52:50,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:50,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955546732] [2021-03-25 09:52:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:50,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:50,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:50,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:50,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:50,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:50,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:50,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:50,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:50,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:50,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955546732] [2021-03-25 09:52:50,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:50,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 09:52:50,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296659740] [2021-03-25 09:52:50,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 09:52:50,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:50,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 09:52:50,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-25 09:52:50,803 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2021-03-25 09:52:50,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 1636 flow. Second operand has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:50,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:50,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2021-03-25 09:52:50,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:51,036 INFO L129 PetriNetUnfolder]: 333/889 cut-off events. [2021-03-25 09:52:51,036 INFO L130 PetriNetUnfolder]: For 7022/7164 co-relation queries the response was YES. [2021-03-25 09:52:51,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4412 conditions, 889 events. 333/889 cut-off events. For 7022/7164 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5960 event pairs, 103 based on Foata normal form. 21/880 useless extension candidates. Maximal degree in co-relation 4325. Up to 489 conditions per place. [2021-03-25 09:52:51,041 INFO L132 encePairwiseOnDemand]: 58/70 looper letters, 48 selfloop transitions, 39 changer transitions 23/127 dead transitions. [2021-03-25 09:52:51,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 127 transitions, 2013 flow [2021-03-25 09:52:51,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 09:52:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 09:52:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 373 transitions. [2021-03-25 09:52:51,042 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.444047619047619 [2021-03-25 09:52:51,042 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 373 transitions. [2021-03-25 09:52:51,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 373 transitions. [2021-03-25 09:52:51,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:51,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 373 transitions. [2021-03-25 09:52:51,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 31.083333333333332) internal successors, (373), 12 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 70.0) internal successors, (910), 13 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,045 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 70.0) internal successors, (910), 13 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,045 INFO L185 Difference]: Start difference. First operand has 109 places, 106 transitions, 1636 flow. Second operand 12 states and 373 transitions. [2021-03-25 09:52:51,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 127 transitions, 2013 flow [2021-03-25 09:52:51,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 127 transitions, 1714 flow, removed 22 selfloop flow, removed 18 redundant places. [2021-03-25 09:52:51,057 INFO L241 Difference]: Finished difference. Result has 104 places, 90 transitions, 1177 flow [2021-03-25 09:52:51,057 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1177, PETRI_PLACES=104, PETRI_TRANSITIONS=90} [2021-03-25 09:52:51,057 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 64 predicate places. [2021-03-25 09:52:51,057 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:51,058 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 90 transitions, 1177 flow [2021-03-25 09:52:51,058 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 90 transitions, 1177 flow [2021-03-25 09:52:51,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 90 transitions, 1177 flow [2021-03-25 09:52:51,083 INFO L129 PetriNetUnfolder]: 147/505 cut-off events. [2021-03-25 09:52:51,083 INFO L130 PetriNetUnfolder]: For 2469/2541 co-relation queries the response was YES. [2021-03-25 09:52:51,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 505 events. 147/505 cut-off events. For 2469/2541 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3466 event pairs, 14 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 1871. Up to 166 conditions per place. [2021-03-25 09:52:51,086 INFO L142 LiptonReduction]: Number of co-enabled transitions 552 [2021-03-25 09:52:51,110 INFO L154 LiptonReduction]: Checked pairs total: 525 [2021-03-25 09:52:51,110 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:52:51,110 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 53 [2021-03-25 09:52:51,111 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 90 transitions, 1179 flow [2021-03-25 09:52:51,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,111 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:51,111 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:51,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-25 09:52:51,111 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:51,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:51,111 INFO L82 PathProgramCache]: Analyzing trace with hash -975000744, now seen corresponding path program 4 times [2021-03-25 09:52:51,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:51,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132682967] [2021-03-25 09:52:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:51,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:51,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:51,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132682967] [2021-03-25 09:52:51,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:51,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 09:52:51,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566706435] [2021-03-25 09:52:51,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 09:52:51,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:51,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 09:52:51,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-25 09:52:51,165 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 71 [2021-03-25 09:52:51,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 90 transitions, 1179 flow. Second operand has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:51,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 71 [2021-03-25 09:52:51,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:51,383 INFO L129 PetriNetUnfolder]: 311/795 cut-off events. [2021-03-25 09:52:51,384 INFO L130 PetriNetUnfolder]: For 4888/5013 co-relation queries the response was YES. [2021-03-25 09:52:51,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3665 conditions, 795 events. 311/795 cut-off events. For 4888/5013 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5110 event pairs, 98 based on Foata normal form. 23/789 useless extension candidates. Maximal degree in co-relation 3590. Up to 479 conditions per place. [2021-03-25 09:52:51,387 INFO L132 encePairwiseOnDemand]: 62/71 looper letters, 39 selfloop transitions, 19 changer transitions 27/102 dead transitions. [2021-03-25 09:52:51,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 102 transitions, 1393 flow [2021-03-25 09:52:51,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 09:52:51,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 09:52:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 336 transitions. [2021-03-25 09:52:51,388 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.43021766965428937 [2021-03-25 09:52:51,388 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 336 transitions. [2021-03-25 09:52:51,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 336 transitions. [2021-03-25 09:52:51,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:51,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 336 transitions. [2021-03-25 09:52:51,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 30.545454545454547) internal successors, (336), 11 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 71.0) internal successors, (852), 12 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,389 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 71.0) internal successors, (852), 12 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,389 INFO L185 Difference]: Start difference. First operand has 97 places, 90 transitions, 1179 flow. Second operand 11 states and 336 transitions. [2021-03-25 09:52:51,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 102 transitions, 1393 flow [2021-03-25 09:52:51,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 102 transitions, 1140 flow, removed 33 selfloop flow, removed 20 redundant places. [2021-03-25 09:52:51,396 INFO L241 Difference]: Finished difference. Result has 89 places, 67 transitions, 690 flow [2021-03-25 09:52:51,396 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=690, PETRI_PLACES=89, PETRI_TRANSITIONS=67} [2021-03-25 09:52:51,396 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 49 predicate places. [2021-03-25 09:52:51,396 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:51,396 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 67 transitions, 690 flow [2021-03-25 09:52:51,396 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 67 transitions, 690 flow [2021-03-25 09:52:51,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 78 places, 67 transitions, 690 flow [2021-03-25 09:52:51,420 INFO L129 PetriNetUnfolder]: 139/436 cut-off events. [2021-03-25 09:52:51,420 INFO L130 PetriNetUnfolder]: For 1448/1508 co-relation queries the response was YES. [2021-03-25 09:52:51,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 436 events. 139/436 cut-off events. For 1448/1508 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2772 event pairs, 17 based on Foata normal form. 6/421 useless extension candidates. Maximal degree in co-relation 1453. Up to 161 conditions per place. [2021-03-25 09:52:51,423 INFO L142 LiptonReduction]: Number of co-enabled transitions 492 [2021-03-25 09:52:51,429 INFO L154 LiptonReduction]: Checked pairs total: 200 [2021-03-25 09:52:51,429 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:52:51,430 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-25 09:52:51,430 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 690 flow [2021-03-25 09:52:51,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,430 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:51,430 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:51,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-25 09:52:51,430 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:51,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:51,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1747890459, now seen corresponding path program 1 times [2021-03-25 09:52:51,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:51,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913147059] [2021-03-25 09:52:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:51,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:51,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:52:51,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:51,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913147059] [2021-03-25 09:52:51,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:51,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 09:52:51,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410822434] [2021-03-25 09:52:51,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 09:52:51,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:51,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 09:52:51,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 09:52:51,462 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 71 [2021-03-25 09:52:51,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 690 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:51,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 71 [2021-03-25 09:52:51,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:51,579 INFO L129 PetriNetUnfolder]: 307/842 cut-off events. [2021-03-25 09:52:51,579 INFO L130 PetriNetUnfolder]: For 4003/4084 co-relation queries the response was YES. [2021-03-25 09:52:51,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3600 conditions, 842 events. 307/842 cut-off events. For 4003/4084 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5732 event pairs, 76 based on Foata normal form. 42/855 useless extension candidates. Maximal degree in co-relation 3512. Up to 251 conditions per place. [2021-03-25 09:52:51,581 INFO L132 encePairwiseOnDemand]: 60/71 looper letters, 44 selfloop transitions, 44 changer transitions 2/107 dead transitions. [2021-03-25 09:52:51,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 107 transitions, 1204 flow [2021-03-25 09:52:51,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 09:52:51,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 09:52:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2021-03-25 09:52:51,596 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.47183098591549294 [2021-03-25 09:52:51,596 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 201 transitions. [2021-03-25 09:52:51,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 201 transitions. [2021-03-25 09:52:51,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:51,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 201 transitions. [2021-03-25 09:52:51,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,597 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,597 INFO L185 Difference]: Start difference. First operand has 78 places, 67 transitions, 690 flow. Second operand 6 states and 201 transitions. [2021-03-25 09:52:51,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 107 transitions, 1204 flow [2021-03-25 09:52:51,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 107 transitions, 966 flow, removed 49 selfloop flow, removed 21 redundant places. [2021-03-25 09:52:51,605 INFO L241 Difference]: Finished difference. Result has 65 places, 90 transitions, 881 flow [2021-03-25 09:52:51,605 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=881, PETRI_PLACES=65, PETRI_TRANSITIONS=90} [2021-03-25 09:52:51,606 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 25 predicate places. [2021-03-25 09:52:51,606 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:51,606 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 90 transitions, 881 flow [2021-03-25 09:52:51,606 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 90 transitions, 881 flow [2021-03-25 09:52:51,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 90 transitions, 881 flow [2021-03-25 09:52:51,633 INFO L129 PetriNetUnfolder]: 140/524 cut-off events. [2021-03-25 09:52:51,634 INFO L130 PetriNetUnfolder]: For 1678/1750 co-relation queries the response was YES. [2021-03-25 09:52:51,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 524 events. 140/524 cut-off events. For 1678/1750 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3726 event pairs, 12 based on Foata normal form. 15/514 useless extension candidates. Maximal degree in co-relation 1895. Up to 165 conditions per place. [2021-03-25 09:52:51,637 INFO L142 LiptonReduction]: Number of co-enabled transitions 550 [2021-03-25 09:52:51,664 INFO L154 LiptonReduction]: Checked pairs total: 763 [2021-03-25 09:52:51,664 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:52:51,665 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 59 [2021-03-25 09:52:51,665 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 90 transitions, 883 flow [2021-03-25 09:52:51,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,665 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:51,665 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:51,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-25 09:52:51,665 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:51,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:51,665 INFO L82 PathProgramCache]: Analyzing trace with hash 616051999, now seen corresponding path program 2 times [2021-03-25 09:52:51,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:51,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438662744] [2021-03-25 09:52:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:51,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:51,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:52:51,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:51,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438662744] [2021-03-25 09:52:51,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:51,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:52:51,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55636506] [2021-03-25 09:52:51,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:52:51,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:51,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:52:51,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:52:51,697 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 72 [2021-03-25 09:52:51,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 90 transitions, 883 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:51,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:51,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 72 [2021-03-25 09:52:51,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:51,821 INFO L129 PetriNetUnfolder]: 323/853 cut-off events. [2021-03-25 09:52:51,821 INFO L130 PetriNetUnfolder]: For 4144/4263 co-relation queries the response was YES. [2021-03-25 09:52:51,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3724 conditions, 853 events. 323/853 cut-off events. For 4144/4263 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5687 event pairs, 34 based on Foata normal form. 41/858 useless extension candidates. Maximal degree in co-relation 3644. Up to 253 conditions per place. [2021-03-25 09:52:51,824 INFO L132 encePairwiseOnDemand]: 60/72 looper letters, 17 selfloop transitions, 73 changer transitions 1/108 dead transitions. [2021-03-25 09:52:51,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 108 transitions, 1190 flow [2021-03-25 09:52:51,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 09:52:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 09:52:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2021-03-25 09:52:51,825 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2021-03-25 09:52:51,825 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 224 transitions. [2021-03-25 09:52:51,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 224 transitions. [2021-03-25 09:52:51,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:51,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 224 transitions. [2021-03-25 09:52:51,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,826 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:51,826 INFO L185 Difference]: Start difference. First operand has 65 places, 90 transitions, 883 flow. Second operand 7 states and 224 transitions. [2021-03-25 09:52:51,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 108 transitions, 1190 flow [2021-03-25 09:52:51,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 108 transitions, 1165 flow, removed 9 selfloop flow, removed 2 redundant places. [2021-03-25 09:52:51,833 INFO L241 Difference]: Finished difference. Result has 70 places, 97 transitions, 1099 flow [2021-03-25 09:52:51,833 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1099, PETRI_PLACES=70, PETRI_TRANSITIONS=97} [2021-03-25 09:52:51,833 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2021-03-25 09:52:51,833 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:51,833 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 97 transitions, 1099 flow [2021-03-25 09:52:51,834 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 97 transitions, 1099 flow [2021-03-25 09:52:51,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 97 transitions, 1099 flow [2021-03-25 09:52:51,866 INFO L129 PetriNetUnfolder]: 144/533 cut-off events. [2021-03-25 09:52:51,866 INFO L130 PetriNetUnfolder]: For 2481/2626 co-relation queries the response was YES. [2021-03-25 09:52:51,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2273 conditions, 533 events. 144/533 cut-off events. For 2481/2626 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3849 event pairs, 11 based on Foata normal form. 10/523 useless extension candidates. Maximal degree in co-relation 2206. Up to 176 conditions per place. [2021-03-25 09:52:51,870 INFO L142 LiptonReduction]: Number of co-enabled transitions 566 [2021-03-25 09:52:51,904 INFO L154 LiptonReduction]: Checked pairs total: 799 [2021-03-25 09:52:51,904 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:52:51,904 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 71 [2021-03-25 09:52:51,905 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 97 transitions, 1101 flow [2021-03-25 09:52:51,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:51,905 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:51,905 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:51,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-25 09:52:51,905 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:51,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:51,905 INFO L82 PathProgramCache]: Analyzing trace with hash -719602004, now seen corresponding path program 1 times [2021-03-25 09:52:51,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:51,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725574472] [2021-03-25 09:52:51,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:51,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:51,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:52:51,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:51,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:51,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:51,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725574472] [2021-03-25 09:52:51,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:51,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:52:51,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431620400] [2021-03-25 09:52:51,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:52:51,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:51,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:52:51,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:52:51,942 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2021-03-25 09:52:51,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 97 transitions, 1101 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:51,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:51,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2021-03-25 09:52:51,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:52,062 INFO L129 PetriNetUnfolder]: 213/650 cut-off events. [2021-03-25 09:52:52,062 INFO L130 PetriNetUnfolder]: For 4037/4098 co-relation queries the response was YES. [2021-03-25 09:52:52,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3239 conditions, 650 events. 213/650 cut-off events. For 4037/4098 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4224 event pairs, 10 based on Foata normal form. 70/710 useless extension candidates. Maximal degree in co-relation 3169. Up to 186 conditions per place. [2021-03-25 09:52:52,064 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 19 selfloop transitions, 72 changer transitions 11/119 dead transitions. [2021-03-25 09:52:52,064 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 119 transitions, 1501 flow [2021-03-25 09:52:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 09:52:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 09:52:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2021-03-25 09:52:52,065 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.44422700587084146 [2021-03-25 09:52:52,065 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 227 transitions. [2021-03-25 09:52:52,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 227 transitions. [2021-03-25 09:52:52,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:52,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 227 transitions. [2021-03-25 09:52:52,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,067 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,067 INFO L185 Difference]: Start difference. First operand has 70 places, 97 transitions, 1101 flow. Second operand 7 states and 227 transitions. [2021-03-25 09:52:52,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 119 transitions, 1501 flow [2021-03-25 09:52:52,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 119 transitions, 1373 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-03-25 09:52:52,074 INFO L241 Difference]: Finished difference. Result has 73 places, 96 transitions, 1127 flow [2021-03-25 09:52:52,074 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1127, PETRI_PLACES=73, PETRI_TRANSITIONS=96} [2021-03-25 09:52:52,075 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 33 predicate places. [2021-03-25 09:52:52,075 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:52,075 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 96 transitions, 1127 flow [2021-03-25 09:52:52,075 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 96 transitions, 1127 flow [2021-03-25 09:52:52,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 96 transitions, 1127 flow [2021-03-25 09:52:52,092 INFO L129 PetriNetUnfolder]: 84/381 cut-off events. [2021-03-25 09:52:52,092 INFO L130 PetriNetUnfolder]: For 2433/2656 co-relation queries the response was YES. [2021-03-25 09:52:52,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 381 events. 84/381 cut-off events. For 2433/2656 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2541 event pairs, 6 based on Foata normal form. 19/389 useless extension candidates. Maximal degree in co-relation 1701. Up to 115 conditions per place. [2021-03-25 09:52:52,095 INFO L142 LiptonReduction]: Number of co-enabled transitions 448 [2021-03-25 09:52:52,121 INFO L154 LiptonReduction]: Checked pairs total: 724 [2021-03-25 09:52:52,121 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:52:52,121 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 46 [2021-03-25 09:52:52,121 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 96 transitions, 1129 flow [2021-03-25 09:52:52,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:52,121 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:52,121 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:52,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-25 09:52:52,122 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:52,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:52,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1040069567, now seen corresponding path program 1 times [2021-03-25 09:52:52,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:52,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220720026] [2021-03-25 09:52:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:52,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:52,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:52:52,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:52,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:52,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220720026] [2021-03-25 09:52:52,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:52,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:52:52,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122928249] [2021-03-25 09:52:52,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:52:52,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:52,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:52:52,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:52:52,154 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 74 [2021-03-25 09:52:52,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 96 transitions, 1129 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:52,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:52,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 74 [2021-03-25 09:52:52,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:52,279 INFO L129 PetriNetUnfolder]: 179/572 cut-off events. [2021-03-25 09:52:52,280 INFO L130 PetriNetUnfolder]: For 4159/4244 co-relation queries the response was YES. [2021-03-25 09:52:52,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3020 conditions, 572 events. 179/572 cut-off events. For 4159/4244 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3657 event pairs, 12 based on Foata normal form. 37/599 useless extension candidates. Maximal degree in co-relation 2954. Up to 162 conditions per place. [2021-03-25 09:52:52,282 INFO L132 encePairwiseOnDemand]: 60/74 looper letters, 18 selfloop transitions, 68 changer transitions 7/110 dead transitions. [2021-03-25 09:52:52,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 110 transitions, 1422 flow [2021-03-25 09:52:52,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 09:52:52,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 09:52:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2021-03-25 09:52:52,282 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.44015444015444016 [2021-03-25 09:52:52,282 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 228 transitions. [2021-03-25 09:52:52,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 228 transitions. [2021-03-25 09:52:52,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:52,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 228 transitions. [2021-03-25 09:52:52,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,284 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 74.0) internal successors, (592), 8 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,284 INFO L185 Difference]: Start difference. First operand has 73 places, 96 transitions, 1129 flow. Second operand 7 states and 228 transitions. [2021-03-25 09:52:52,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 110 transitions, 1422 flow [2021-03-25 09:52:52,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 110 transitions, 1263 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-03-25 09:52:52,291 INFO L241 Difference]: Finished difference. Result has 74 places, 92 transitions, 1071 flow [2021-03-25 09:52:52,291 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1071, PETRI_PLACES=74, PETRI_TRANSITIONS=92} [2021-03-25 09:52:52,291 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 34 predicate places. [2021-03-25 09:52:52,291 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:52,291 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 92 transitions, 1071 flow [2021-03-25 09:52:52,291 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 92 transitions, 1071 flow [2021-03-25 09:52:52,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 92 transitions, 1071 flow [2021-03-25 09:52:52,311 INFO L129 PetriNetUnfolder]: 73/353 cut-off events. [2021-03-25 09:52:52,311 INFO L130 PetriNetUnfolder]: For 2691/2903 co-relation queries the response was YES. [2021-03-25 09:52:52,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1585 conditions, 353 events. 73/353 cut-off events. For 2691/2903 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2272 event pairs, 5 based on Foata normal form. 21/368 useless extension candidates. Maximal degree in co-relation 1526. Up to 103 conditions per place. [2021-03-25 09:52:52,314 INFO L142 LiptonReduction]: Number of co-enabled transitions 416 [2021-03-25 09:52:52,338 INFO L154 LiptonReduction]: Checked pairs total: 486 [2021-03-25 09:52:52,339 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:52:52,339 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 48 [2021-03-25 09:52:52,339 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 92 transitions, 1073 flow [2021-03-25 09:52:52,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:52,339 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:52,339 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:52,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-25 09:52:52,339 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:52,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:52,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1549527330, now seen corresponding path program 2 times [2021-03-25 09:52:52,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:52,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115181696] [2021-03-25 09:52:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:52,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:52,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:52:52,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:52,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115181696] [2021-03-25 09:52:52,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:52,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:52:52,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977103611] [2021-03-25 09:52:52,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:52:52,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:52,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:52:52,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:52:52,381 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 75 [2021-03-25 09:52:52,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 92 transitions, 1073 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:52,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:52,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 75 [2021-03-25 09:52:52,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:52,491 INFO L129 PetriNetUnfolder]: 88/330 cut-off events. [2021-03-25 09:52:52,491 INFO L130 PetriNetUnfolder]: For 2219/2248 co-relation queries the response was YES. [2021-03-25 09:52:52,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 330 events. 88/330 cut-off events. For 2219/2248 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1875 event pairs, 4 based on Foata normal form. 38/364 useless extension candidates. Maximal degree in co-relation 1862. Up to 119 conditions per place. [2021-03-25 09:52:52,492 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 13 selfloop transitions, 35 changer transitions 25/90 dead transitions. [2021-03-25 09:52:52,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 90 transitions, 1125 flow [2021-03-25 09:52:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 09:52:52,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 09:52:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2021-03-25 09:52:52,493 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2021-03-25 09:52:52,493 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 220 transitions. [2021-03-25 09:52:52,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 220 transitions. [2021-03-25 09:52:52,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:52,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 220 transitions. [2021-03-25 09:52:52,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.428571428571427) internal successors, (220), 7 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,494 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,494 INFO L185 Difference]: Start difference. First operand has 73 places, 92 transitions, 1073 flow. Second operand 7 states and 220 transitions. [2021-03-25 09:52:52,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 90 transitions, 1125 flow [2021-03-25 09:52:52,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 90 transitions, 999 flow, removed 5 selfloop flow, removed 10 redundant places. [2021-03-25 09:52:52,498 INFO L241 Difference]: Finished difference. Result has 70 places, 59 transitions, 595 flow [2021-03-25 09:52:52,498 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=595, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2021-03-25 09:52:52,498 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2021-03-25 09:52:52,498 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:52,498 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 59 transitions, 595 flow [2021-03-25 09:52:52,499 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 59 transitions, 595 flow [2021-03-25 09:52:52,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 595 flow [2021-03-25 09:52:52,504 INFO L129 PetriNetUnfolder]: 16/115 cut-off events. [2021-03-25 09:52:52,504 INFO L130 PetriNetUnfolder]: For 956/1084 co-relation queries the response was YES. [2021-03-25 09:52:52,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 115 events. 16/115 cut-off events. For 956/1084 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 455 event pairs, 0 based on Foata normal form. 5/120 useless extension candidates. Maximal degree in co-relation 269. Up to 35 conditions per place. [2021-03-25 09:52:52,505 INFO L142 LiptonReduction]: Number of co-enabled transitions 150 [2021-03-25 09:52:52,727 INFO L154 LiptonReduction]: Checked pairs total: 78 [2021-03-25 09:52:52,727 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 09:52:52,727 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 229 [2021-03-25 09:52:52,728 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 603 flow [2021-03-25 09:52:52,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 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 09:52:52,728 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:52,728 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:52,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-25 09:52:52,728 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:52,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:52,729 INFO L82 PathProgramCache]: Analyzing trace with hash -2081954616, now seen corresponding path program 9 times [2021-03-25 09:52:52,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:52,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495652548] [2021-03-25 09:52:52,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:52,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:52,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:52:52,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:52,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495652548] [2021-03-25 09:52:52,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:52,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:52:52,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568545279] [2021-03-25 09:52:52,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:52:52,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:52,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:52:52,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:52:52,787 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 83 [2021-03-25 09:52:52,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 603 flow. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:52,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 83 [2021-03-25 09:52:52,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:52,908 INFO L129 PetriNetUnfolder]: 30/139 cut-off events. [2021-03-25 09:52:52,908 INFO L130 PetriNetUnfolder]: For 1008/1016 co-relation queries the response was YES. [2021-03-25 09:52:52,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 139 events. 30/139 cut-off events. For 1008/1016 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 565 event pairs, 3 based on Foata normal form. 9/147 useless extension candidates. Maximal degree in co-relation 420. Up to 48 conditions per place. [2021-03-25 09:52:52,909 INFO L132 encePairwiseOnDemand]: 68/83 looper letters, 9 selfloop transitions, 25 changer transitions 19/67 dead transitions. [2021-03-25 09:52:52,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 67 transitions, 781 flow [2021-03-25 09:52:52,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 09:52:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 09:52:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 270 transitions. [2021-03-25 09:52:52,910 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3614457831325301 [2021-03-25 09:52:52,910 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 270 transitions. [2021-03-25 09:52:52,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 270 transitions. [2021-03-25 09:52:52,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:52,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 270 transitions. [2021-03-25 09:52:52,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,913 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,913 INFO L185 Difference]: Start difference. First operand has 66 places, 57 transitions, 603 flow. Second operand 9 states and 270 transitions. [2021-03-25 09:52:52,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 67 transitions, 781 flow [2021-03-25 09:52:52,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 67 transitions, 639 flow, removed 30 selfloop flow, removed 9 redundant places. [2021-03-25 09:52:52,916 INFO L241 Difference]: Finished difference. Result has 66 places, 47 transitions, 395 flow [2021-03-25 09:52:52,917 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=395, PETRI_PLACES=66, PETRI_TRANSITIONS=47} [2021-03-25 09:52:52,917 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2021-03-25 09:52:52,917 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:52,917 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 47 transitions, 395 flow [2021-03-25 09:52:52,918 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 47 transitions, 395 flow [2021-03-25 09:52:52,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 47 transitions, 395 flow [2021-03-25 09:52:52,923 INFO L129 PetriNetUnfolder]: 10/83 cut-off events. [2021-03-25 09:52:52,923 INFO L130 PetriNetUnfolder]: For 363/363 co-relation queries the response was YES. [2021-03-25 09:52:52,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 83 events. 10/83 cut-off events. For 363/363 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 271 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 285. Up to 23 conditions per place. [2021-03-25 09:52:52,923 INFO L142 LiptonReduction]: Number of co-enabled transitions 80 [2021-03-25 09:52:52,925 INFO L154 LiptonReduction]: Checked pairs total: 8 [2021-03-25 09:52:52,925 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:52:52,925 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 09:52:52,925 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 395 flow [2021-03-25 09:52:52,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,926 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:52,926 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:52,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-25 09:52:52,927 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:52,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:52,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1605591469, now seen corresponding path program 1 times [2021-03-25 09:52:52,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:52,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889565361] [2021-03-25 09:52:52,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:52,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:52,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:52:52,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:52,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:52,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:52,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889565361] [2021-03-25 09:52:52,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:52,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:52:52,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814025258] [2021-03-25 09:52:52,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:52:52,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:52,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:52:52,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:52:52,981 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 83 [2021-03-25 09:52:52,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 395 flow. Second operand has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:52,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:52,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 83 [2021-03-25 09:52:52,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:53,069 INFO L129 PetriNetUnfolder]: 15/93 cut-off events. [2021-03-25 09:52:53,069 INFO L130 PetriNetUnfolder]: For 477/481 co-relation queries the response was YES. [2021-03-25 09:52:53,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 93 events. 15/93 cut-off events. For 477/481 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 297 event pairs, 2 based on Foata normal form. 6/98 useless extension candidates. Maximal degree in co-relation 353. Up to 25 conditions per place. [2021-03-25 09:52:53,071 INFO L132 encePairwiseOnDemand]: 69/83 looper letters, 7 selfloop transitions, 21 changer transitions 5/47 dead transitions. [2021-03-25 09:52:53,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 47 transitions, 459 flow [2021-03-25 09:52:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:52:53,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:52:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 232 transitions. [2021-03-25 09:52:53,076 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3493975903614458 [2021-03-25 09:52:53,076 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 232 transitions. [2021-03-25 09:52:53,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 232 transitions. [2021-03-25 09:52:53,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:53,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 232 transitions. [2021-03-25 09:52:53,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:53,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:53,078 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:53,078 INFO L185 Difference]: Start difference. First operand has 61 places, 47 transitions, 395 flow. Second operand 8 states and 232 transitions. [2021-03-25 09:52:53,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 47 transitions, 459 flow [2021-03-25 09:52:53,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 371 flow, removed 3 selfloop flow, removed 11 redundant places. [2021-03-25 09:52:53,080 INFO L241 Difference]: Finished difference. Result has 58 places, 41 transitions, 302 flow [2021-03-25 09:52:53,080 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=302, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2021-03-25 09:52:53,080 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2021-03-25 09:52:53,080 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:53,080 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 41 transitions, 302 flow [2021-03-25 09:52:53,080 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 41 transitions, 302 flow [2021-03-25 09:52:53,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 41 transitions, 302 flow [2021-03-25 09:52:53,084 INFO L129 PetriNetUnfolder]: 6/67 cut-off events. [2021-03-25 09:52:53,084 INFO L130 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2021-03-25 09:52:53,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 67 events. 6/67 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 194 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 203. Up to 19 conditions per place. [2021-03-25 09:52:53,084 INFO L142 LiptonReduction]: Number of co-enabled transitions 66 [2021-03-25 09:52:53,216 INFO L154 LiptonReduction]: Checked pairs total: 20 [2021-03-25 09:52:53,216 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 09:52:53,216 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 136 [2021-03-25 09:52:53,217 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 306 flow [2021-03-25 09:52:53,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:53,217 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:53,217 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:53,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-25 09:52:53,217 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:53,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:53,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1138851910, now seen corresponding path program 1 times [2021-03-25 09:52:53,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:53,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127055098] [2021-03-25 09:52:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:53,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:53,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:53,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:52:53,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:53,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:53,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:53,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:53,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:53,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:53,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127055098] [2021-03-25 09:52:53,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:53,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:52:53,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847341167] [2021-03-25 09:52:53,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:52:53,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:53,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:52:53,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:52:53,261 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 85 [2021-03-25 09:52:53,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 306 flow. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:53,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:53,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 85 [2021-03-25 09:52:53,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:53,336 INFO L129 PetriNetUnfolder]: 5/61 cut-off events. [2021-03-25 09:52:53,336 INFO L130 PetriNetUnfolder]: For 227/231 co-relation queries the response was YES. [2021-03-25 09:52:53,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 61 events. 5/61 cut-off events. For 227/231 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 151 event pairs, 1 based on Foata normal form. 5/65 useless extension candidates. Maximal degree in co-relation 252. Up to 17 conditions per place. [2021-03-25 09:52:53,337 INFO L132 encePairwiseOnDemand]: 70/85 looper letters, 3 selfloop transitions, 14 changer transitions 9/38 dead transitions. [2021-03-25 09:52:53,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 38 transitions, 340 flow [2021-03-25 09:52:53,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:52:53,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:52:53,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2021-03-25 09:52:53,338 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.33088235294117646 [2021-03-25 09:52:53,338 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 225 transitions. [2021-03-25 09:52:53,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 225 transitions. [2021-03-25 09:52:53,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:53,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 225 transitions. [2021-03-25 09:52:53,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:53,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:53,339 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:53,339 INFO L185 Difference]: Start difference. First operand has 54 places, 40 transitions, 306 flow. Second operand 8 states and 225 transitions. [2021-03-25 09:52:53,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 38 transitions, 340 flow [2021-03-25 09:52:53,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 38 transitions, 249 flow, removed 8 selfloop flow, removed 12 redundant places. [2021-03-25 09:52:53,341 INFO L241 Difference]: Finished difference. Result has 49 places, 29 transitions, 171 flow [2021-03-25 09:52:53,341 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=171, PETRI_PLACES=49, PETRI_TRANSITIONS=29} [2021-03-25 09:52:53,341 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2021-03-25 09:52:53,341 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:53,341 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 29 transitions, 171 flow [2021-03-25 09:52:53,341 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 29 transitions, 171 flow [2021-03-25 09:52:53,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 29 transitions, 171 flow [2021-03-25 09:52:53,343 INFO L129 PetriNetUnfolder]: 2/33 cut-off events. [2021-03-25 09:52:53,343 INFO L130 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2021-03-25 09:52:53,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 33 events. 2/33 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 49. Up to 7 conditions per place. [2021-03-25 09:52:53,343 INFO L142 LiptonReduction]: Number of co-enabled transitions 14 [2021-03-25 09:52:53,656 INFO L154 LiptonReduction]: Checked pairs total: 7 [2021-03-25 09:52:53,656 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 09:52:53,656 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 315 [2021-03-25 09:52:53,656 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 169 flow [2021-03-25 09:52:53,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:53,657 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:52:53,657 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:52:53,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-25 09:52:53,657 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:52:53,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:52:53,657 INFO L82 PathProgramCache]: Analyzing trace with hash -316903280, now seen corresponding path program 1 times [2021-03-25 09:52:53,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:52:53,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804366449] [2021-03-25 09:52:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:52:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:52:53,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:52:53,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:53,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:52:53,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:53,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:53,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:53,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:52:53,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:52:53,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:52:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:52:53,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804366449] [2021-03-25 09:52:53,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:52:53,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:52:53,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446476247] [2021-03-25 09:52:53,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:52:53,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:52:53,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:52:53,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:52:53,697 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 91 [2021-03-25 09:52:53,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 169 flow. Second operand has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:53,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:52:53,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 91 [2021-03-25 09:52:53,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:52:53,748 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2021-03-25 09:52:53,748 INFO L130 PetriNetUnfolder]: For 49/50 co-relation queries the response was YES. [2021-03-25 09:52:53,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 18 events. 1/18 cut-off events. For 49/50 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 3/21 useless extension candidates. Maximal degree in co-relation 18. Up to 7 conditions per place. [2021-03-25 09:52:53,749 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2021-03-25 09:52:53,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 16 transitions, 142 flow [2021-03-25 09:52:53,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:52:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:52:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2021-03-25 09:52:53,750 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.29395604395604397 [2021-03-25 09:52:53,750 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 214 transitions. [2021-03-25 09:52:53,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 214 transitions. [2021-03-25 09:52:53,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:52:53,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 214 transitions. [2021-03-25 09:52:53,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:53,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:53,751 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:53,751 INFO L185 Difference]: Start difference. First operand has 42 places, 26 transitions, 169 flow. Second operand 8 states and 214 transitions. [2021-03-25 09:52:53,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 16 transitions, 142 flow [2021-03-25 09:52:53,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 16 transitions, 98 flow, removed 3 selfloop flow, removed 11 redundant places. [2021-03-25 09:52:53,752 INFO L241 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2021-03-25 09:52:53,752 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2021-03-25 09:52:53,752 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -10 predicate places. [2021-03-25 09:52:53,752 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:52:53,752 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 0 transitions, 0 flow [2021-03-25 09:52:53,752 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 0 transitions, 0 flow [2021-03-25 09:52:53,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 09:52:53,753 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 09:52:53,753 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 09:52:53,753 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 09:52:53,753 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 09:52:53,753 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:52:53,753 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:52:53,753 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 09:52:53,753 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 09:52:53,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:52:53,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-25 09:52:53,756 INFO L202 PluginConnector]: Adding new model ticket-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 09:52:53 BasicIcfg [2021-03-25 09:52:53,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 09:52:53,757 INFO L168 Benchmark]: Toolchain (without parser) took 16467.78 ms. Allocated memory was 255.9 MB in the beginning and 610.3 MB in the end (delta: 354.4 MB). Free memory was 236.6 MB in the beginning and 457.3 MB in the end (delta: -220.7 MB). Peak memory consumption was 135.1 MB. Max. memory is 16.0 GB. [2021-03-25 09:52:53,757 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.47 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 09:52:53,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.04 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 09:52:53,757 INFO L168 Benchmark]: Boogie Preprocessor took 19.70 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.1 MB in the end (delta: 998.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 09:52:53,758 INFO L168 Benchmark]: RCFGBuilder took 323.64 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 236.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. [2021-03-25 09:52:53,758 INFO L168 Benchmark]: TraceAbstraction took 16096.33 ms. Allocated memory was 255.9 MB in the beginning and 610.3 MB in the end (delta: 354.4 MB). Free memory was 236.3 MB in the beginning and 457.3 MB in the end (delta: -221.0 MB). Peak memory consumption was 133.7 MB. Max. memory is 16.0 GB. [2021-03-25 09:52:53,758 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 0.47 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.04 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.70 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.1 MB in the end (delta: 998.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 323.64 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 236.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 16096.33 ms. Allocated memory was 255.9 MB in the beginning and 610.3 MB in the end (delta: 354.4 MB). Free memory was 236.3 MB in the beginning and 457.3 MB in the end (delta: -221.0 MB). Peak memory consumption was 133.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 86.7ms, 45 PlacesBefore, 40 PlacesAfterwards, 32 TransitionsBefore, 27 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 932 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 238, positive: 188, positive conditional: 0, positive unconditional: 188, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 138, positive: 117, positive conditional: 0, positive unconditional: 117, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 138, positive: 117, positive conditional: 0, positive unconditional: 117, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 238, positive: 71, positive conditional: 0, positive unconditional: 71, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 138, unknown conditional: 0, unknown unconditional: 138] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.6ms, 39 PlacesBefore, 39 PlacesAfterwards, 34 TransitionsBefore, 34 TransitionsAfterwards, 336 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 105 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 261.8ms, 45 PlacesBefore, 45 PlacesAfterwards, 58 TransitionsBefore, 58 TransitionsAfterwards, 754 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 201 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 6, negative conditional: 0, negative unconditional: 6, 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: 9, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 427.4ms, 50 PlacesBefore, 50 PlacesAfterwards, 79 TransitionsBefore, 79 TransitionsAfterwards, 960 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 630 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 54, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 54, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 543.9ms, 56 PlacesBefore, 56 PlacesAfterwards, 107 TransitionsBefore, 107 TransitionsAfterwards, 1322 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 1491 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 81, positive: 57, positive conditional: 0, positive unconditional: 57, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 81, positive: 57, positive conditional: 0, positive unconditional: 57, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 460.6ms, 60 PlacesBefore, 60 PlacesAfterwards, 116 TransitionsBefore, 116 TransitionsAfterwards, 1378 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 1514 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 144, positive: 122, positive conditional: 0, positive unconditional: 122, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 144, positive: 122, positive conditional: 0, positive unconditional: 122, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 276.3ms, 68 PlacesBefore, 68 PlacesAfterwards, 122 TransitionsBefore, 122 TransitionsAfterwards, 1442 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 781 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 12, negative conditional: 0, negative unconditional: 12, 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: 12, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 455.4ms, 68 PlacesBefore, 68 PlacesAfterwards, 130 TransitionsBefore, 130 TransitionsAfterwards, 1342 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 2052 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 436, positive: 408, positive conditional: 0, positive unconditional: 408, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 436, positive: 408, positive conditional: 0, positive unconditional: 408, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 381.7ms, 74 PlacesBefore, 74 PlacesAfterwards, 136 TransitionsBefore, 136 TransitionsAfterwards, 1354 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 1698 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 168, positive: 142, positive conditional: 0, positive unconditional: 142, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 168, positive: 142, positive conditional: 0, positive unconditional: 142, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 246.5ms, 76 PlacesBefore, 76 PlacesAfterwards, 145 TransitionsBefore, 145 TransitionsAfterwards, 1354 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 789 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 13, negative conditional: 0, negative unconditional: 13, 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: 13, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 182.7ms, 82 PlacesBefore, 82 PlacesAfterwards, 157 TransitionsBefore, 157 TransitionsAfterwards, 1424 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 832 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 13, negative conditional: 0, negative unconditional: 13, 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: 16, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 359.7ms, 85 PlacesBefore, 85 PlacesAfterwards, 151 TransitionsBefore, 151 TransitionsAfterwards, 1142 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 1851 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 173, positive: 141, positive conditional: 0, positive unconditional: 141, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 173, positive: 141, positive conditional: 0, positive unconditional: 141, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 304.2ms, 92 PlacesBefore, 92 PlacesAfterwards, 169 TransitionsBefore, 169 TransitionsAfterwards, 1170 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 1709 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 99, positive: 69, positive conditional: 0, positive unconditional: 69, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 99, positive: 68, positive conditional: 0, positive unconditional: 68, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 50, Positive conditional cache size: 0, Positive unconditional cache size: 50, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 236.8ms, 95 PlacesBefore, 95 PlacesAfterwards, 175 TransitionsBefore, 175 TransitionsAfterwards, 1100 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 1688 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 142, positive: 112, positive conditional: 0, positive unconditional: 112, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 142, positive: 111, positive conditional: 0, positive unconditional: 111, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 232.5ms, 99 PlacesBefore, 99 PlacesAfterwards, 177 TransitionsBefore, 177 TransitionsAfterwards, 942 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 1852 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 312, positive: 276, positive conditional: 0, positive unconditional: 276, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 312, positive: 274, positive conditional: 0, positive unconditional: 274, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 45.7ms, 106 PlacesBefore, 106 PlacesAfterwards, 131 TransitionsBefore, 131 TransitionsAfterwards, 560 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 331 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 20, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 11, negative conditional: 0, negative unconditional: 11, 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: 20, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.4ms, 108 PlacesBefore, 108 PlacesAfterwards, 111 TransitionsBefore, 111 TransitionsAfterwards, 524 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 250 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 9, negative conditional: 0, negative unconditional: 9, 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: 17, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 83.6ms, 110 PlacesBefore, 110 PlacesAfterwards, 134 TransitionsBefore, 134 TransitionsAfterwards, 688 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 802 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 80, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 80, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 83.4ms, 115 PlacesBefore, 115 PlacesAfterwards, 129 TransitionsBefore, 129 TransitionsAfterwards, 658 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 755 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 55, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 55, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 79.0ms, 120 PlacesBefore, 115 PlacesAfterwards, 124 TransitionsBefore, 124 TransitionsAfterwards, 650 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 741 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 47, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 47, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 42.6ms, 117 PlacesBefore, 109 PlacesAfterwards, 106 TransitionsBefore, 106 TransitionsAfterwards, 602 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 301 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 10, negative conditional: 0, negative unconditional: 10, 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: 18, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 52.4ms, 104 PlacesBefore, 97 PlacesAfterwards, 90 TransitionsBefore, 90 TransitionsAfterwards, 552 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 525 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 39, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 39, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.4ms, 89 PlacesBefore, 78 PlacesAfterwards, 67 TransitionsBefore, 67 TransitionsAfterwards, 492 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 200 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 8, negative conditional: 0, negative unconditional: 8, 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: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 58.5ms, 65 PlacesBefore, 65 PlacesAfterwards, 90 TransitionsBefore, 90 TransitionsAfterwards, 550 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 763 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 183, positive: 155, positive conditional: 0, positive unconditional: 155, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 183, positive: 151, positive conditional: 0, positive unconditional: 151, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 57, Positive conditional cache size: 0, Positive unconditional cache size: 57, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 70.7ms, 70 PlacesBefore, 70 PlacesAfterwards, 97 TransitionsBefore, 97 TransitionsAfterwards, 566 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 799 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 135, positive: 107, positive conditional: 0, positive unconditional: 107, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 135, positive: 107, positive conditional: 0, positive unconditional: 107, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 57, Positive conditional cache size: 0, Positive unconditional cache size: 57, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 45.9ms, 73 PlacesBefore, 73 PlacesAfterwards, 96 TransitionsBefore, 96 TransitionsAfterwards, 448 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 724 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 68, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 68, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 57, Positive conditional cache size: 0, Positive unconditional cache size: 57, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 47.2ms, 74 PlacesBefore, 73 PlacesAfterwards, 92 TransitionsBefore, 92 TransitionsAfterwards, 416 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 486 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 52, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 52, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 57, Positive conditional cache size: 0, Positive unconditional cache size: 57, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 228.7ms, 70 PlacesBefore, 66 PlacesAfterwards, 59 TransitionsBefore, 57 TransitionsAfterwards, 150 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 78 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 62, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 62, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9ms, 66 PlacesBefore, 61 PlacesAfterwards, 47 TransitionsBefore, 47 TransitionsAfterwards, 80 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 8 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, 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: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 135.9ms, 58 PlacesBefore, 54 PlacesAfterwards, 41 TransitionsBefore, 40 TransitionsAfterwards, 66 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 20 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 314.8ms, 49 PlacesBefore, 42 PlacesAfterwards, 29 TransitionsBefore, 26 TransitionsAfterwards, 14 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 7 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 30 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): 9, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - PositiveResult [Line: 80]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 16.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 15936.4ms, OverallIterations: 31, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 8294.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 168.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 58 SDtfs, 407 SDslu, 7 SDs, 0 SdLazy, 4827 SolverSat, 749 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2197.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 277 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1036.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2981occurred in iteration=14, InterpolantAutomatonStates: 240, 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: 38.0ms SsaConstructionTime, 193.7ms SatisfiabilityAnalysisTime, 1202.8ms InterpolantComputationTime, 807 NumberOfCodeBlocks, 807 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 776 ConstructedInterpolants, 0 QuantifiedInterpolants, 2182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 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...