/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 22:35:41,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 22:35:41,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 22:35:41,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 22:35:41,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 22:35:41,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 22:35:41,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 22:35:41,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 22:35:41,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 22:35:41,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 22:35:41,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 22:35:41,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 22:35:41,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 22:35:41,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 22:35:41,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 22:35:41,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 22:35:41,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 22:35:41,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 22:35:41,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 22:35:41,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 22:35:41,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 22:35:41,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 22:35:41,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 22:35:41,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 22:35:41,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 22:35:41,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 22:35:41,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 22:35:41,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 22:35:41,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 22:35:41,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-03-24 22:35:41,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 22:35:41,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 22:35:41,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 22:35:41,632 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-SemanticLbe.epf [2021-03-24 22:35:41,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 22:35:41,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 22:35:41,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 22:35:41,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 22:35:41,647 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 22:35:41,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 22:35:41,647 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 22:35:41,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 22:35:41,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 22:35:41,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 22:35:41,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 22:35:41,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 22:35:41,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 22:35:41,648 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 22:35:41,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 22:35:41,648 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 22:35:41,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 22:35:41,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 22:35:41,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 22:35:41,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 22:35:41,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 22:35:41,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:35:41,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 22:35:41,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 22:35:41,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 22:35:41,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 22:35:41,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 22:35:41,650 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 22:35:41,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 22:35:41,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 22:35:41,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 22:35:41,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 22:35:41,909 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 22:35:41,910 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 22:35:41,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2021-03-24 22:35:41,911 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2021-03-24 22:35:41,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 22:35:41,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 22:35:41,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 22:35:41,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 22:35:41,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 22:35:41,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:41" (1/1) ... [2021-03-24 22:35:41,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:41" (1/1) ... [2021-03-24 22:35:41,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 22:35:41,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 22:35:41,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 22:35:41,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 22:35:41,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:41" (1/1) ... [2021-03-24 22:35:41,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:41" (1/1) ... [2021-03-24 22:35:41,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:41" (1/1) ... [2021-03-24 22:35:41,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:41" (1/1) ... [2021-03-24 22:35:41,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:41" (1/1) ... [2021-03-24 22:35:41,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:41" (1/1) ... [2021-03-24 22:35:41,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:41" (1/1) ... [2021-03-24 22:35:41,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 22:35:41,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 22:35:41,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 22:35:41,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 22:35:41,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:41" (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 [2021-03-24 22:35:42,071 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-24 22:35:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-24 22:35:42,071 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-24 22:35:42,071 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-24 22:35:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-24 22:35:42,072 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-24 22:35:42,072 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-24 22:35:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-24 22:35:42,072 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-24 22:35:42,072 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-24 22:35:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-24 22:35:42,073 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-24 22:35:42,073 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-24 22:35:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-24 22:35:42,073 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-24 22:35:42,073 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 22:35:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 22:35:42,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 22:35:42,074 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-24 22:35:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-24 22:35:42,074 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-24 22:35:42,074 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-24 22:35:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-24 22:35:42,075 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-24 22:35:42,076 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 22:35:42,198 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 22:35:42,199 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 22:35:42,199 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:35:42 BoogieIcfgContainer [2021-03-24 22:35:42,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 22:35:42,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 22:35:42,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 22:35:42,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 22:35:42,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:35:41" (1/2) ... [2021-03-24 22:35:42,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb3e8cc and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:35:42, skipping insertion in model container [2021-03-24 22:35:42,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:35:42" (2/2) ... [2021-03-24 22:35:42,204 INFO L111 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2021-03-24 22:35:42,208 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 22:35:42,211 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 22:35:42,211 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 22:35:42,283 INFO L149 ThreadInstanceAdder]: Constructed 49 joinOtherThreadTransitions. [2021-03-24 22:35:42,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-24 22:35:42,308 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 22:35:42,308 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 22:35:42,308 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 22:35:42,308 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 22:35:42,308 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 22:35:42,309 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 22:35:42,309 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 22:35:42,309 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 22:35:42,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions, 342 flow [2021-03-24 22:35:42,461 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2021-03-24 22:35:42,461 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-03-24 22:35:42,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 472 events. 321/472 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1541 event pairs, 0 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2021-03-24 22:35:42,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 80 transitions, 342 flow [2021-03-24 22:35:42,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 71 transitions, 310 flow [2021-03-24 22:35:42,490 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 22:35:42,498 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 71 transitions, 310 flow [2021-03-24 22:35:42,500 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 71 transitions, 310 flow [2021-03-24 22:35:42,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 71 transitions, 310 flow [2021-03-24 22:35:42,551 INFO L129 PetriNetUnfolder]: 321/470 cut-off events. [2021-03-24 22:35:42,551 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-03-24 22:35:42,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 470 events. 321/470 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1573 event pairs, 0 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2021-03-24 22:35:42,559 INFO L142 LiptonReduction]: Number of co-enabled transitions 1260 [2021-03-24 22:35:42,622 INFO L154 LiptonReduction]: Checked pairs total: 357 [2021-03-24 22:35:42,622 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-24 22:35:42,624 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 135 [2021-03-24 22:35:42,656 INFO L129 PetriNetUnfolder]: 321/462 cut-off events. [2021-03-24 22:35:42,657 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-03-24 22:35:42,657 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:42,657 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] [2021-03-24 22:35:42,657 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:42,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:42,661 INFO L82 PathProgramCache]: Analyzing trace with hash 792718600, now seen corresponding path program 1 times [2021-03-24 22:35:42,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:42,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090929385] [2021-03-24 22:35:42,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:42,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:42,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:35:42,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:42,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090929385] [2021-03-24 22:35:42,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:42,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:35:42,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256951881] [2021-03-24 22:35:42,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:35:42,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:42,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:35:42,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:35:42,765 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-24 22:35:42,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 64 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:42,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-24 22:35:42,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:42,824 INFO L129 PetriNetUnfolder]: 135/220 cut-off events. [2021-03-24 22:35:42,825 INFO L130 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2021-03-24 22:35:42,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 220 events. 135/220 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 739 event pairs, 0 based on Foata normal form. 57/277 useless extension candidates. Maximal degree in co-relation 394. Up to 60 conditions per place. [2021-03-24 22:35:42,830 INFO L132 encePairwiseOnDemand]: 81/87 looper letters, 2 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2021-03-24 22:35:42,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 277 flow [2021-03-24 22:35:42,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:35:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:35:42,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-24 22:35:42,840 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-24 22:35:42,840 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-24 22:35:42,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-24 22:35:42,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:42,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-24 22:35:42,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,853 INFO L185 Difference]: Start difference. First operand has 44 places, 64 transitions, 296 flow. Second operand 3 states and 245 transitions. [2021-03-24 22:35:42,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 277 flow [2021-03-24 22:35:42,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 59 transitions, 175 flow, removed 0 selfloop flow, removed 14 redundant places. [2021-03-24 22:35:42,859 INFO L241 Difference]: Finished difference. Result has 32 places, 59 transitions, 171 flow [2021-03-24 22:35:42,860 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=32, PETRI_TRANSITIONS=59} [2021-03-24 22:35:42,861 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -12 predicate places. [2021-03-24 22:35:42,861 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 59 transitions, 171 flow [2021-03-24 22:35:42,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,861 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:42,861 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] [2021-03-24 22:35:42,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 22:35:42,862 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:42,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:42,863 INFO L82 PathProgramCache]: Analyzing trace with hash -814701548, now seen corresponding path program 1 times [2021-03-24 22:35:42,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:42,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828678342] [2021-03-24 22:35:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:42,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:42,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:35:42,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:42,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828678342] [2021-03-24 22:35:42,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:42,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:35:42,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10346167] [2021-03-24 22:35:42,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:35:42,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:42,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:35:42,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:35:42,906 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-24 22:35:42,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 59 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:42,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-24 22:35:42,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:42,930 INFO L129 PetriNetUnfolder]: 130/214 cut-off events. [2021-03-24 22:35:42,931 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-03-24 22:35:42,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 214 events. 130/214 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 721 event pairs, 0 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 241. Up to 60 conditions per place. [2021-03-24 22:35:42,933 INFO L132 encePairwiseOnDemand]: 85/87 looper letters, 6 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2021-03-24 22:35:42,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 58 transitions, 182 flow [2021-03-24 22:35:42,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:35:42,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:35:42,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-24 22:35:42,940 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-24 22:35:42,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-24 22:35:42,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-24 22:35:42,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:42,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-24 22:35:42,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,944 INFO L185 Difference]: Start difference. First operand has 32 places, 59 transitions, 171 flow. Second operand 3 states and 245 transitions. [2021-03-24 22:35:42,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 58 transitions, 182 flow [2021-03-24 22:35:42,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 58 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:35:42,947 INFO L241 Difference]: Finished difference. Result has 33 places, 58 transitions, 169 flow [2021-03-24 22:35:42,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=33, PETRI_TRANSITIONS=58} [2021-03-24 22:35:42,948 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -11 predicate places. [2021-03-24 22:35:42,948 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 58 transitions, 169 flow [2021-03-24 22:35:42,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,948 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:42,949 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] [2021-03-24 22:35:42,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 22:35:42,949 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:42,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:42,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1618123062, now seen corresponding path program 1 times [2021-03-24 22:35:42,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:42,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974953948] [2021-03-24 22:35:42,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:42,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:42,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:35:42,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:42,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:42,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974953948] [2021-03-24 22:35:42,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:42,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:35:42,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942324192] [2021-03-24 22:35:42,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:35:42,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:42,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:35:42,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:35:42,987 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-24 22:35:42,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 58 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:42,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:42,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-24 22:35:42,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:43,006 INFO L129 PetriNetUnfolder]: 106/184 cut-off events. [2021-03-24 22:35:43,007 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-24 22:35:43,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 184 events. 106/184 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 642 event pairs, 0 based on Foata normal form. 5/189 useless extension candidates. Maximal degree in co-relation 216. Up to 60 conditions per place. [2021-03-24 22:35:43,008 INFO L132 encePairwiseOnDemand]: 84/87 looper letters, 5 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2021-03-24 22:35:43,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 56 transitions, 175 flow [2021-03-24 22:35:43,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:35:43,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:35:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-24 22:35:43,009 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-24 22:35:43,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-24 22:35:43,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-24 22:35:43,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:43,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-24 22:35:43,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,013 INFO L185 Difference]: Start difference. First operand has 33 places, 58 transitions, 169 flow. Second operand 3 states and 245 transitions. [2021-03-24 22:35:43,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 56 transitions, 175 flow [2021-03-24 22:35:43,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 56 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:35:43,016 INFO L241 Difference]: Finished difference. Result has 34 places, 56 transitions, 164 flow [2021-03-24 22:35:43,016 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=34, PETRI_TRANSITIONS=56} [2021-03-24 22:35:43,016 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -10 predicate places. [2021-03-24 22:35:43,016 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 56 transitions, 164 flow [2021-03-24 22:35:43,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,016 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:43,017 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] [2021-03-24 22:35:43,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 22:35:43,017 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:43,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:43,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1847729876, now seen corresponding path program 1 times [2021-03-24 22:35:43,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:43,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872202742] [2021-03-24 22:35:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:43,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:35:43,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:43,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872202742] [2021-03-24 22:35:43,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:43,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:35:43,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954038943] [2021-03-24 22:35:43,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:35:43,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:43,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:35:43,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:35:43,070 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-24 22:35:43,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 56 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:43,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-24 22:35:43,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:43,100 INFO L129 PetriNetUnfolder]: 41/94 cut-off events. [2021-03-24 22:35:43,100 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-03-24 22:35:43,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 94 events. 41/94 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 255 event pairs, 0 based on Foata normal form. 20/114 useless extension candidates. Maximal degree in co-relation 107. Up to 20 conditions per place. [2021-03-24 22:35:43,101 INFO L132 encePairwiseOnDemand]: 82/87 looper letters, 3 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2021-03-24 22:35:43,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 160 flow [2021-03-24 22:35:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:35:43,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:35:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-24 22:35:43,102 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-24 22:35:43,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-24 22:35:43,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-24 22:35:43,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:43,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-24 22:35:43,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,104 INFO L185 Difference]: Start difference. First operand has 34 places, 56 transitions, 164 flow. Second operand 3 states and 245 transitions. [2021-03-24 22:35:43,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 160 flow [2021-03-24 22:35:43,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 159 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:35:43,106 INFO L241 Difference]: Finished difference. Result has 35 places, 52 transitions, 153 flow [2021-03-24 22:35:43,106 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=35, PETRI_TRANSITIONS=52} [2021-03-24 22:35:43,106 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -9 predicate places. [2021-03-24 22:35:43,106 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 52 transitions, 153 flow [2021-03-24 22:35:43,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,106 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:43,106 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] [2021-03-24 22:35:43,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 22:35:43,107 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:43,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:43,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1199705006, now seen corresponding path program 1 times [2021-03-24 22:35:43,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:43,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771565213] [2021-03-24 22:35:43,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:43,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:35:43,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:43,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771565213] [2021-03-24 22:35:43,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:43,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:35:43,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973409957] [2021-03-24 22:35:43,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:35:43,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:43,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:35:43,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:35:43,123 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-24 22:35:43,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 52 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:43,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-24 22:35:43,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:43,134 INFO L129 PetriNetUnfolder]: 21/64 cut-off events. [2021-03-24 22:35:43,135 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-03-24 22:35:43,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 64 events. 21/64 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 144 event pairs, 0 based on Foata normal form. 6/70 useless extension candidates. Maximal degree in co-relation 78. Up to 12 conditions per place. [2021-03-24 22:35:43,135 INFO L132 encePairwiseOnDemand]: 83/87 looper letters, 4 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2021-03-24 22:35:43,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 49 transitions, 154 flow [2021-03-24 22:35:43,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:35:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:35:43,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-24 22:35:43,136 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-24 22:35:43,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-24 22:35:43,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-24 22:35:43,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:43,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-24 22:35:43,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,138 INFO L185 Difference]: Start difference. First operand has 35 places, 52 transitions, 153 flow. Second operand 3 states and 245 transitions. [2021-03-24 22:35:43,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 49 transitions, 154 flow [2021-03-24 22:35:43,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:35:43,139 INFO L241 Difference]: Finished difference. Result has 36 places, 49 transitions, 145 flow [2021-03-24 22:35:43,140 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=36, PETRI_TRANSITIONS=49} [2021-03-24 22:35:43,140 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2021-03-24 22:35:43,140 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 49 transitions, 145 flow [2021-03-24 22:35:43,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,140 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:43,140 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] [2021-03-24 22:35:43,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 22:35:43,141 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:43,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:43,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1754835470, now seen corresponding path program 1 times [2021-03-24 22:35:43,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:43,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190135870] [2021-03-24 22:35:43,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:43,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:35:43,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:43,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190135870] [2021-03-24 22:35:43,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:43,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:35:43,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137021190] [2021-03-24 22:35:43,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:35:43,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:43,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:35:43,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:35:43,162 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 87 [2021-03-24 22:35:43,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 49 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:43,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 87 [2021-03-24 22:35:43,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:43,173 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-24 22:35:43,173 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-24 22:35:43,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 22 events. 0/22 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 6/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:35:43,174 INFO L132 encePairwiseOnDemand]: 80/87 looper letters, 1 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2021-03-24 22:35:43,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 22 transitions, 68 flow [2021-03-24 22:35:43,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:35:43,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:35:43,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2021-03-24 22:35:43,175 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9386973180076629 [2021-03-24 22:35:43,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2021-03-24 22:35:43,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2021-03-24 22:35:43,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:43,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2021-03-24 22:35:43,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,177 INFO L185 Difference]: Start difference. First operand has 36 places, 49 transitions, 145 flow. Second operand 3 states and 245 transitions. [2021-03-24 22:35:43,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 22 transitions, 68 flow [2021-03-24 22:35:43,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 22 transitions, 67 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:35:43,178 INFO L241 Difference]: Finished difference. Result has 37 places, 22 transitions, 65 flow [2021-03-24 22:35:43,178 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2021-03-24 22:35:43,178 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -7 predicate places. [2021-03-24 22:35:43,178 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 65 flow [2021-03-24 22:35:43,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,179 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:43,179 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] [2021-03-24 22:35:43,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 22:35:43,179 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:43,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:43,179 INFO L82 PathProgramCache]: Analyzing trace with hash 976181548, now seen corresponding path program 1 times [2021-03-24 22:35:43,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:43,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006827295] [2021-03-24 22:35:43,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:43,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:43,248 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:43,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:43,269 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:43,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:43,294 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:43,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:43,321 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:35:43,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:35:43,368 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:35:43,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:35:43,412 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:43,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:43,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006827295] [2021-03-24 22:35:43,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:43,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:43,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401427291] [2021-03-24 22:35:43,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:43,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:43,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:43,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:43,459 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:43,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 65 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:43,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:43,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:43,630 INFO L129 PetriNetUnfolder]: 387/724 cut-off events. [2021-03-24 22:35:43,630 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 22:35:43,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 724 events. 387/724 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4118 event pairs, 129 based on Foata normal form. 1/669 useless extension candidates. Maximal degree in co-relation 1315. Up to 225 conditions per place. [2021-03-24 22:35:43,634 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 27 selfloop transitions, 6 changer transitions 1/48 dead transitions. [2021-03-24 22:35:43,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 185 flow [2021-03-24 22:35:43,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:43,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:43,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:43,649 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:43,649 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:43,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:43,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:43,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:43,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,652 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,652 INFO L185 Difference]: Start difference. First operand has 37 places, 22 transitions, 65 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:43,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 185 flow [2021-03-24 22:35:43,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 22:35:43,654 INFO L241 Difference]: Finished difference. Result has 51 places, 27 transitions, 111 flow [2021-03-24 22:35:43,654 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=111, PETRI_PLACES=51, PETRI_TRANSITIONS=27} [2021-03-24 22:35:43,654 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2021-03-24 22:35:43,654 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 27 transitions, 111 flow [2021-03-24 22:35:43,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,655 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:43,655 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] [2021-03-24 22:35:43,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 22:35:43,655 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:43,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:43,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2007826080, now seen corresponding path program 2 times [2021-03-24 22:35:43,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:43,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783126755] [2021-03-24 22:35:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:43,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:43,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:43,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:43,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:43,748 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:43,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:43,761 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:43,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:43,787 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:35:43,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:35:43,817 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:35:43,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:35:43,855 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:43,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:43,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783126755] [2021-03-24 22:35:43,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:43,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:43,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716548664] [2021-03-24 22:35:43,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:43,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:43,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:43,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:43,895 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:43,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 27 transitions, 111 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:43,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:43,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:43,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:44,088 INFO L129 PetriNetUnfolder]: 453/1033 cut-off events. [2021-03-24 22:35:44,089 INFO L130 PetriNetUnfolder]: For 1007/1012 co-relation queries the response was YES. [2021-03-24 22:35:44,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2637 conditions, 1033 events. 453/1033 cut-off events. For 1007/1012 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6897 event pairs, 147 based on Foata normal form. 1/977 useless extension candidates. Maximal degree in co-relation 2622. Up to 297 conditions per place. [2021-03-24 22:35:44,098 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 38 selfloop transitions, 9 changer transitions 2/63 dead transitions. [2021-03-24 22:35:44,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 379 flow [2021-03-24 22:35:44,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:44,101 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:44,101 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:44,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:44,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:44,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:44,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,105 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,105 INFO L185 Difference]: Start difference. First operand has 51 places, 27 transitions, 111 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:44,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 379 flow [2021-03-24 22:35:44,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 360 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-24 22:35:44,109 INFO L241 Difference]: Finished difference. Result has 63 places, 35 transitions, 201 flow [2021-03-24 22:35:44,110 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=201, PETRI_PLACES=63, PETRI_TRANSITIONS=35} [2021-03-24 22:35:44,110 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 19 predicate places. [2021-03-24 22:35:44,110 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 35 transitions, 201 flow [2021-03-24 22:35:44,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,110 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:44,110 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] [2021-03-24 22:35:44,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 22:35:44,111 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:44,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:44,111 INFO L82 PathProgramCache]: Analyzing trace with hash -326948672, now seen corresponding path program 3 times [2021-03-24 22:35:44,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:44,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706290333] [2021-03-24 22:35:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:44,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:44,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:44,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:44,166 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:44,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:44,177 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:44,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:44,194 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:35:44,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:35:44,217 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:35:44,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:35:44,256 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:44,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:44,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706290333] [2021-03-24 22:35:44,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:44,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:44,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691889229] [2021-03-24 22:35:44,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:44,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:44,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:44,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:44,289 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:44,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 35 transitions, 201 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:44,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:44,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:44,512 INFO L129 PetriNetUnfolder]: 535/1413 cut-off events. [2021-03-24 22:35:44,512 INFO L130 PetriNetUnfolder]: For 3422/3547 co-relation queries the response was YES. [2021-03-24 22:35:44,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4522 conditions, 1413 events. 535/1413 cut-off events. For 3422/3547 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11134 event pairs, 164 based on Foata normal form. 1/1351 useless extension candidates. Maximal degree in co-relation 4501. Up to 408 conditions per place. [2021-03-24 22:35:44,520 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 49 selfloop transitions, 18 changer transitions 1/82 dead transitions. [2021-03-24 22:35:44,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 663 flow [2021-03-24 22:35:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:44,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:44,537 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:44,537 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:44,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:44,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:44,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:44,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,539 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,540 INFO L185 Difference]: Start difference. First operand has 63 places, 35 transitions, 201 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:44,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 663 flow [2021-03-24 22:35:44,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 82 transitions, 634 flow, removed 11 selfloop flow, removed 2 redundant places. [2021-03-24 22:35:44,546 INFO L241 Difference]: Finished difference. Result has 75 places, 50 transitions, 411 flow [2021-03-24 22:35:44,546 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=411, PETRI_PLACES=75, PETRI_TRANSITIONS=50} [2021-03-24 22:35:44,546 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2021-03-24 22:35:44,546 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 50 transitions, 411 flow [2021-03-24 22:35:44,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,547 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:44,547 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:44,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 22:35:44,547 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:44,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:44,547 INFO L82 PathProgramCache]: Analyzing trace with hash -762664422, now seen corresponding path program 4 times [2021-03-24 22:35:44,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:44,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762254839] [2021-03-24 22:35:44,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:44,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:44,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:44,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:44,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:44,629 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:44,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:44,640 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:44,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:44,660 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:35:44,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:35:44,686 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:35:44,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:35:44,719 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:44,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:44,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762254839] [2021-03-24 22:35:44,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:44,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:44,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101764697] [2021-03-24 22:35:44,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:44,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:44,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:44,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:44,743 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:44,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 50 transitions, 411 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:44,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:44,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:44,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:45,013 INFO L129 PetriNetUnfolder]: 640/1951 cut-off events. [2021-03-24 22:35:45,014 INFO L130 PetriNetUnfolder]: For 8582/8735 co-relation queries the response was YES. [2021-03-24 22:35:45,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7290 conditions, 1951 events. 640/1951 cut-off events. For 8582/8735 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 18283 event pairs, 193 based on Foata normal form. 1/1874 useless extension candidates. Maximal degree in co-relation 7263. Up to 552 conditions per place. [2021-03-24 22:35:45,031 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 67 selfloop transitions, 32 changer transitions 1/114 dead transitions. [2021-03-24 22:35:45,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 1234 flow [2021-03-24 22:35:45,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:45,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:45,034 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:45,034 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:45,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:45,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:45,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:45,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,038 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,038 INFO L185 Difference]: Start difference. First operand has 75 places, 50 transitions, 411 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:45,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 1234 flow [2021-03-24 22:35:45,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 114 transitions, 1206 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-03-24 22:35:45,053 INFO L241 Difference]: Finished difference. Result has 87 places, 77 transitions, 871 flow [2021-03-24 22:35:45,054 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=871, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2021-03-24 22:35:45,054 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 43 predicate places. [2021-03-24 22:35:45,054 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 871 flow [2021-03-24 22:35:45,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,055 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:45,055 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] [2021-03-24 22:35:45,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 22:35:45,055 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:45,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:45,056 INFO L82 PathProgramCache]: Analyzing trace with hash -121259338, now seen corresponding path program 5 times [2021-03-24 22:35:45,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:45,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825374405] [2021-03-24 22:35:45,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:45,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:45,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:45,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:45,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:45,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:45,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:45,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:45,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:45,124 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:45,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:45,137 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:35:45,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:35:45,157 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:35:45,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:35:45,235 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:45,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:45,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825374405] [2021-03-24 22:35:45,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:45,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:45,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410780750] [2021-03-24 22:35:45,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:45,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:45,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:45,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:45,262 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:45,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 871 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:45,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:45,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:45,660 INFO L129 PetriNetUnfolder]: 780/2943 cut-off events. [2021-03-24 22:35:45,660 INFO L130 PetriNetUnfolder]: For 18048/18351 co-relation queries the response was YES. [2021-03-24 22:35:45,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11823 conditions, 2943 events. 780/2943 cut-off events. For 18048/18351 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 32929 event pairs, 261 based on Foata normal form. 1/2844 useless extension candidates. Maximal degree in co-relation 11790. Up to 800 conditions per place. [2021-03-24 22:35:45,682 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 83 selfloop transitions, 43 changer transitions 1/141 dead transitions. [2021-03-24 22:35:45,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 141 transitions, 1874 flow [2021-03-24 22:35:45,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:45,684 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:45,684 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:45,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:45,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:45,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:45,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,687 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,687 INFO L185 Difference]: Start difference. First operand has 87 places, 77 transitions, 871 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:45,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 141 transitions, 1874 flow [2021-03-24 22:35:45,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 141 transitions, 1844 flow, removed 9 selfloop flow, removed 2 redundant places. [2021-03-24 22:35:45,725 INFO L241 Difference]: Finished difference. Result has 99 places, 96 transitions, 1294 flow [2021-03-24 22:35:45,725 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1294, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2021-03-24 22:35:45,725 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 55 predicate places. [2021-03-24 22:35:45,726 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 1294 flow [2021-03-24 22:35:45,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,726 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:45,726 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] [2021-03-24 22:35:45,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 22:35:45,726 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:45,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:45,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1992160978, now seen corresponding path program 6 times [2021-03-24 22:35:45,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:45,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680268804] [2021-03-24 22:35:45,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:45,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:45,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:45,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:45,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:45,810 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:45,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:45,818 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:45,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:45,828 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:45,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:45,841 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:35:45,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:35:45,866 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:35:45,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:35:45,890 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:45,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:45,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680268804] [2021-03-24 22:35:45,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:45,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:45,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712748437] [2021-03-24 22:35:45,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:45,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:45,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:45,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:45,915 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:45,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 1294 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:45,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:45,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:45,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:46,358 INFO L129 PetriNetUnfolder]: 839/3202 cut-off events. [2021-03-24 22:35:46,359 INFO L130 PetriNetUnfolder]: For 28552/29372 co-relation queries the response was YES. [2021-03-24 22:35:46,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14722 conditions, 3202 events. 839/3202 cut-off events. For 28552/29372 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 36590 event pairs, 276 based on Foata normal form. 1/3086 useless extension candidates. Maximal degree in co-relation 14683. Up to 897 conditions per place. [2021-03-24 22:35:46,388 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 76 selfloop transitions, 55 changer transitions 2/147 dead transitions. [2021-03-24 22:35:46,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 147 transitions, 2208 flow [2021-03-24 22:35:46,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:46,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:46,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:46,390 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:46,390 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:46,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:46,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:46,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:46,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:46,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:46,393 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:46,393 INFO L185 Difference]: Start difference. First operand has 99 places, 96 transitions, 1294 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:46,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 147 transitions, 2208 flow [2021-03-24 22:35:46,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 147 transitions, 2130 flow, removed 26 selfloop flow, removed 2 redundant places. [2021-03-24 22:35:46,433 INFO L241 Difference]: Finished difference. Result has 111 places, 119 transitions, 1824 flow [2021-03-24 22:35:46,433 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1824, PETRI_PLACES=111, PETRI_TRANSITIONS=119} [2021-03-24 22:35:46,433 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 67 predicate places. [2021-03-24 22:35:46,433 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 119 transitions, 1824 flow [2021-03-24 22:35:46,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:46,436 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:46,436 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] [2021-03-24 22:35:46,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 22:35:46,437 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:46,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:46,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1257254258, now seen corresponding path program 7 times [2021-03-24 22:35:46,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:46,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320430806] [2021-03-24 22:35:46,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:46,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:46,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:46,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:46,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:46,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:46,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:46,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:46,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:46,492 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-24 22:35:46,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 22:35:46,518 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:35:46,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:35:46,546 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:35:46,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:35:46,615 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:46,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:46,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320430806] [2021-03-24 22:35:46,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:46,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:46,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469516897] [2021-03-24 22:35:46,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:46,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:46,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:46,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:46,640 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:46,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 119 transitions, 1824 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:46,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:46,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:46,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:47,075 INFO L129 PetriNetUnfolder]: 849/3417 cut-off events. [2021-03-24 22:35:47,076 INFO L130 PetriNetUnfolder]: For 41834/43363 co-relation queries the response was YES. [2021-03-24 22:35:47,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17594 conditions, 3417 events. 849/3417 cut-off events. For 41834/43363 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 39762 event pairs, 377 based on Foata normal form. 4/3302 useless extension candidates. Maximal degree in co-relation 17549. Up to 903 conditions per place. [2021-03-24 22:35:47,115 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 110 selfloop transitions, 62 changer transitions 2/188 dead transitions. [2021-03-24 22:35:47,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 188 transitions, 3153 flow [2021-03-24 22:35:47,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:47,117 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:47,117 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:47,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:47,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:47,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:47,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:47,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:47,119 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:47,120 INFO L185 Difference]: Start difference. First operand has 111 places, 119 transitions, 1824 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:47,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 188 transitions, 3153 flow [2021-03-24 22:35:47,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 188 transitions, 2999 flow, removed 52 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:47,204 INFO L241 Difference]: Finished difference. Result has 122 places, 137 transitions, 2229 flow [2021-03-24 22:35:47,204 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1741, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2229, PETRI_PLACES=122, PETRI_TRANSITIONS=137} [2021-03-24 22:35:47,204 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 78 predicate places. [2021-03-24 22:35:47,204 INFO L480 AbstractCegarLoop]: Abstraction has has 122 places, 137 transitions, 2229 flow [2021-03-24 22:35:47,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:47,204 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:47,204 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] [2021-03-24 22:35:47,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 22:35:47,205 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:47,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:47,205 INFO L82 PathProgramCache]: Analyzing trace with hash -575836876, now seen corresponding path program 8 times [2021-03-24 22:35:47,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:47,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431414233] [2021-03-24 22:35:47,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:47,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:47,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:47,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:47,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:47,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:47,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:47,239 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:47,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:47,250 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:47,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:47,278 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:35:47,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:35:47,301 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:35:47,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:35:47,334 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:47,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:47,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431414233] [2021-03-24 22:35:47,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:47,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:47,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368330460] [2021-03-24 22:35:47,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:47,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:47,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:47,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:47,369 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:47,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 137 transitions, 2229 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:47,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:47,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:47,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:47,852 INFO L129 PetriNetUnfolder]: 852/3844 cut-off events. [2021-03-24 22:35:47,852 INFO L130 PetriNetUnfolder]: For 53608/56365 co-relation queries the response was YES. [2021-03-24 22:35:47,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20609 conditions, 3844 events. 852/3844 cut-off events. For 53608/56365 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 47513 event pairs, 345 based on Foata normal form. 6/3691 useless extension candidates. Maximal degree in co-relation 20559. Up to 1012 conditions per place. [2021-03-24 22:35:47,889 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 125 selfloop transitions, 80 changer transitions 1/220 dead transitions. [2021-03-24 22:35:47,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 220 transitions, 3893 flow [2021-03-24 22:35:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:47,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:47,891 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:47,891 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:47,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:47,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:47,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:47,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:47,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:47,893 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:47,894 INFO L185 Difference]: Start difference. First operand has 122 places, 137 transitions, 2229 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:47,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 220 transitions, 3893 flow [2021-03-24 22:35:47,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 220 transitions, 3749 flow, removed 52 selfloop flow, removed 2 redundant places. [2021-03-24 22:35:47,988 INFO L241 Difference]: Finished difference. Result has 134 places, 169 transitions, 2991 flow [2021-03-24 22:35:47,988 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2991, PETRI_PLACES=134, PETRI_TRANSITIONS=169} [2021-03-24 22:35:47,989 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 90 predicate places. [2021-03-24 22:35:47,989 INFO L480 AbstractCegarLoop]: Abstraction has has 134 places, 169 transitions, 2991 flow [2021-03-24 22:35:47,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:47,989 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:47,989 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] [2021-03-24 22:35:47,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 22:35:47,989 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:47,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:47,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1030299834, now seen corresponding path program 9 times [2021-03-24 22:35:47,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:47,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472985894] [2021-03-24 22:35:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:48,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:48,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:48,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:48,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:48,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:48,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:48,037 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:48,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:48,046 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:48,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:48,059 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:35:48,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:35:48,076 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:35:48,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:35:48,098 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:48,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:48,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472985894] [2021-03-24 22:35:48,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:48,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:48,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825418023] [2021-03-24 22:35:48,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:48,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:48,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:48,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:48,122 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:48,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 169 transitions, 2991 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:48,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:48,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:48,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:48,841 INFO L129 PetriNetUnfolder]: 843/4435 cut-off events. [2021-03-24 22:35:48,841 INFO L130 PetriNetUnfolder]: For 72449/74976 co-relation queries the response was YES. [2021-03-24 22:35:48,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24699 conditions, 4435 events. 843/4435 cut-off events. For 72449/74976 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 58911 event pairs, 337 based on Foata normal form. 12/4258 useless extension candidates. Maximal degree in co-relation 24643. Up to 1069 conditions per place. [2021-03-24 22:35:48,880 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 155 selfloop transitions, 96 changer transitions 1/266 dead transitions. [2021-03-24 22:35:48,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 266 transitions, 5123 flow [2021-03-24 22:35:48,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:48,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:48,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:48,881 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:48,882 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:48,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:48,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:48,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:48,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:48,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:48,884 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:48,884 INFO L185 Difference]: Start difference. First operand has 134 places, 169 transitions, 2991 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:48,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 266 transitions, 5123 flow [2021-03-24 22:35:49,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 266 transitions, 4915 flow, removed 84 selfloop flow, removed 2 redundant places. [2021-03-24 22:35:49,009 INFO L241 Difference]: Finished difference. Result has 146 places, 213 transitions, 4043 flow [2021-03-24 22:35:49,009 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2865, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4043, PETRI_PLACES=146, PETRI_TRANSITIONS=213} [2021-03-24 22:35:49,009 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 102 predicate places. [2021-03-24 22:35:49,010 INFO L480 AbstractCegarLoop]: Abstraction has has 146 places, 213 transitions, 4043 flow [2021-03-24 22:35:49,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:49,010 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:49,010 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] [2021-03-24 22:35:49,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 22:35:49,010 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:49,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:49,011 INFO L82 PathProgramCache]: Analyzing trace with hash -407352836, now seen corresponding path program 10 times [2021-03-24 22:35:49,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:49,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756924289] [2021-03-24 22:35:49,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:49,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:49,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:49,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:49,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:49,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:49,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:49,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:49,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:35:49,053 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:49,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:49,068 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:35:49,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:35:49,140 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:35:49,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:35:49,164 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:49,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:49,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756924289] [2021-03-24 22:35:49,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:49,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:49,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670123793] [2021-03-24 22:35:49,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:49,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:49,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:49,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:49,189 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:49,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 213 transitions, 4043 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:49,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:49,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:49,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:49,916 INFO L129 PetriNetUnfolder]: 823/4619 cut-off events. [2021-03-24 22:35:49,917 INFO L130 PetriNetUnfolder]: For 90064/92699 co-relation queries the response was YES. [2021-03-24 22:35:49,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27481 conditions, 4619 events. 823/4619 cut-off events. For 90064/92699 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 62790 event pairs, 340 based on Foata normal form. 15/4453 useless extension candidates. Maximal degree in co-relation 27419. Up to 1087 conditions per place. [2021-03-24 22:35:49,960 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 171 selfloop transitions, 118 changer transitions 3/306 dead transitions. [2021-03-24 22:35:49,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 306 transitions, 6335 flow [2021-03-24 22:35:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:49,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:49,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:49,963 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:49,963 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:49,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:49,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:49,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:49,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:49,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:49,968 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:49,968 INFO L185 Difference]: Start difference. First operand has 146 places, 213 transitions, 4043 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:49,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 306 transitions, 6335 flow [2021-03-24 22:35:50,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 306 transitions, 6127 flow, removed 84 selfloop flow, removed 2 redundant places. [2021-03-24 22:35:50,197 INFO L241 Difference]: Finished difference. Result has 158 places, 237 transitions, 4841 flow [2021-03-24 22:35:50,197 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3891, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4841, PETRI_PLACES=158, PETRI_TRANSITIONS=237} [2021-03-24 22:35:50,197 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 114 predicate places. [2021-03-24 22:35:50,197 INFO L480 AbstractCegarLoop]: Abstraction has has 158 places, 237 transitions, 4841 flow [2021-03-24 22:35:50,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:50,197 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:50,197 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] [2021-03-24 22:35:50,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 22:35:50,198 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:50,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:50,198 INFO L82 PathProgramCache]: Analyzing trace with hash -808104420, now seen corresponding path program 11 times [2021-03-24 22:35:50,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:50,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253252727] [2021-03-24 22:35:50,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:50,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:50,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:50,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:50,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:50,235 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:50,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:50,242 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:50,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:50,252 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:35:50,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:35:50,272 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:35:50,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:35:50,302 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:35:50,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:35:50,326 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:50,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:50,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253252727] [2021-03-24 22:35:50,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:50,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:50,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936013738] [2021-03-24 22:35:50,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:50,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:50,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:50,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:50,351 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:50,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 237 transitions, 4841 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:50,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:50,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:50,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:51,114 INFO L129 PetriNetUnfolder]: 806/4709 cut-off events. [2021-03-24 22:35:51,114 INFO L130 PetriNetUnfolder]: For 110621/115107 co-relation queries the response was YES. [2021-03-24 22:35:51,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29881 conditions, 4709 events. 806/4709 cut-off events. For 110621/115107 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 64747 event pairs, 415 based on Foata normal form. 20/4544 useless extension candidates. Maximal degree in co-relation 29813. Up to 983 conditions per place. [2021-03-24 22:35:51,164 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 163 selfloop transitions, 129 changer transitions 2/308 dead transitions. [2021-03-24 22:35:51,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 308 transitions, 6847 flow [2021-03-24 22:35:51,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:51,166 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:51,166 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:51,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:51,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:51,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:51,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:51,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:51,168 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:51,168 INFO L185 Difference]: Start difference. First operand has 158 places, 237 transitions, 4841 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:51,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 308 transitions, 6847 flow [2021-03-24 22:35:51,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 308 transitions, 6635 flow, removed 86 selfloop flow, removed 2 redundant places. [2021-03-24 22:35:51,498 INFO L241 Difference]: Finished difference. Result has 170 places, 251 transitions, 5501 flow [2021-03-24 22:35:51,498 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=4687, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5501, PETRI_PLACES=170, PETRI_TRANSITIONS=251} [2021-03-24 22:35:51,499 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 126 predicate places. [2021-03-24 22:35:51,499 INFO L480 AbstractCegarLoop]: Abstraction has has 170 places, 251 transitions, 5501 flow [2021-03-24 22:35:51,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:51,499 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:51,499 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] [2021-03-24 22:35:51,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 22:35:51,499 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:51,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:51,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1473127532, now seen corresponding path program 12 times [2021-03-24 22:35:51,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:51,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544468188] [2021-03-24 22:35:51,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:51,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:51,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:51,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:51,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:51,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:51,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:51,535 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:35:51,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:35:51,617 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:35:51,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:35:51,632 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:35:51,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:35:51,653 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:35:51,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:35:51,678 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:51,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:51,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544468188] [2021-03-24 22:35:51,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:51,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:51,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241392177] [2021-03-24 22:35:51,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:51,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:51,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:51,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:51,703 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:51,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 251 transitions, 5501 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:51,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:51,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:51,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:52,677 INFO L129 PetriNetUnfolder]: 783/5096 cut-off events. [2021-03-24 22:35:52,677 INFO L130 PetriNetUnfolder]: For 129061/133488 co-relation queries the response was YES. [2021-03-24 22:35:52,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32631 conditions, 5096 events. 783/5096 cut-off events. For 129061/133488 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 72769 event pairs, 292 based on Foata normal form. 32/4870 useless extension candidates. Maximal degree in co-relation 32557. Up to 1106 conditions per place. [2021-03-24 22:35:52,785 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 182 selfloop transitions, 152 changer transitions 1/349 dead transitions. [2021-03-24 22:35:52,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 349 transitions, 8369 flow [2021-03-24 22:35:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:52,786 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:52,786 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:52,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:52,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:52,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:52,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:52,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:52,788 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:52,788 INFO L185 Difference]: Start difference. First operand has 170 places, 251 transitions, 5501 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:52,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 349 transitions, 8369 flow [2021-03-24 22:35:53,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 349 transitions, 8114 flow, removed 106 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:53,101 INFO L241 Difference]: Finished difference. Result has 180 places, 282 transitions, 6572 flow [2021-03-24 22:35:53,102 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=5337, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6572, PETRI_PLACES=180, PETRI_TRANSITIONS=282} [2021-03-24 22:35:53,102 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 136 predicate places. [2021-03-24 22:35:53,102 INFO L480 AbstractCegarLoop]: Abstraction has has 180 places, 282 transitions, 6572 flow [2021-03-24 22:35:53,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:53,102 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:53,102 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] [2021-03-24 22:35:53,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 22:35:53,103 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:53,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:53,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1237463442, now seen corresponding path program 13 times [2021-03-24 22:35:53,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:53,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789436993] [2021-03-24 22:35:53,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:53,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:53,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:53,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:53,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:53,121 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:53,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:53,127 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:53,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:53,136 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:35:53,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:35:53,156 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:35:53,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:35:53,186 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:35:53,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:35:53,210 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:53,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:53,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789436993] [2021-03-24 22:35:53,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:53,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:53,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700652405] [2021-03-24 22:35:53,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:53,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:53,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:53,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:53,236 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:53,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 282 transitions, 6572 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:53,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:53,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:53,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:54,231 INFO L129 PetriNetUnfolder]: 777/5002 cut-off events. [2021-03-24 22:35:54,232 INFO L130 PetriNetUnfolder]: For 138838/143557 co-relation queries the response was YES. [2021-03-24 22:35:54,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33484 conditions, 5002 events. 777/5002 cut-off events. For 138838/143557 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 71023 event pairs, 442 based on Foata normal form. 23/4815 useless extension candidates. Maximal degree in co-relation 33406. Up to 982 conditions per place. [2021-03-24 22:35:54,361 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 174 selfloop transitions, 165 changer transitions 1/354 dead transitions. [2021-03-24 22:35:54,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 354 transitions, 8885 flow [2021-03-24 22:35:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:54,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:54,362 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:54,362 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:54,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:54,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:54,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:54,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:54,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:54,365 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:54,365 INFO L185 Difference]: Start difference. First operand has 180 places, 282 transitions, 6572 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:54,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 354 transitions, 8885 flow [2021-03-24 22:35:54,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 354 transitions, 8502 flow, removed 107 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:54,666 INFO L241 Difference]: Finished difference. Result has 190 places, 295 transitions, 7135 flow [2021-03-24 22:35:54,666 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=6309, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7135, PETRI_PLACES=190, PETRI_TRANSITIONS=295} [2021-03-24 22:35:54,666 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 146 predicate places. [2021-03-24 22:35:54,666 INFO L480 AbstractCegarLoop]: Abstraction has has 190 places, 295 transitions, 7135 flow [2021-03-24 22:35:54,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:54,667 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:54,667 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] [2021-03-24 22:35:54,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-24 22:35:54,667 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:54,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:54,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2007168412, now seen corresponding path program 14 times [2021-03-24 22:35:54,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:54,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902666347] [2021-03-24 22:35:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:54,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:54,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:54,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:54,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:54,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:54,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:35:54,690 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:54,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:54,700 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:54,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:54,713 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:35:54,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:35:54,731 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:35:54,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:35:54,754 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:54,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:54,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:54,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902666347] [2021-03-24 22:35:54,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:54,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:54,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632542786] [2021-03-24 22:35:54,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:54,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:54,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:54,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:54,778 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:54,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 295 transitions, 7135 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:54,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:54,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:54,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:55,800 INFO L129 PetriNetUnfolder]: 781/5121 cut-off events. [2021-03-24 22:35:55,801 INFO L130 PetriNetUnfolder]: For 142660/147849 co-relation queries the response was YES. [2021-03-24 22:35:55,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34015 conditions, 5121 events. 781/5121 cut-off events. For 142660/147849 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 73195 event pairs, 431 based on Foata normal form. 34/4921 useless extension candidates. Maximal degree in co-relation 33932. Up to 1106 conditions per place. [2021-03-24 22:35:55,844 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 157 selfloop transitions, 193 changer transitions 1/365 dead transitions. [2021-03-24 22:35:55,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 365 transitions, 9614 flow [2021-03-24 22:35:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:55,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:55,846 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:55,846 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:55,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:55,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:55,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:55,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:55,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:55,849 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:55,849 INFO L185 Difference]: Start difference. First operand has 190 places, 295 transitions, 7135 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:55,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 365 transitions, 9614 flow [2021-03-24 22:35:56,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 365 transitions, 9247 flow, removed 76 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:56,372 INFO L241 Difference]: Finished difference. Result has 200 places, 335 transitions, 8647 flow [2021-03-24 22:35:56,373 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=6860, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8647, PETRI_PLACES=200, PETRI_TRANSITIONS=335} [2021-03-24 22:35:56,373 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 156 predicate places. [2021-03-24 22:35:56,373 INFO L480 AbstractCegarLoop]: Abstraction has has 200 places, 335 transitions, 8647 flow [2021-03-24 22:35:56,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:56,373 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:56,373 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:35:56,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-24 22:35:56,373 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:56,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:56,374 INFO L82 PathProgramCache]: Analyzing trace with hash 123343342, now seen corresponding path program 15 times [2021-03-24 22:35:56,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:56,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868959060] [2021-03-24 22:35:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:56,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:56,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:56,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:56,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:56,393 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:56,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:56,399 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:35:56,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:35:56,408 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:56,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:56,421 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:35:56,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:35:56,439 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:35:56,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:35:56,462 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:56,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:56,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868959060] [2021-03-24 22:35:56,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:56,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:56,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686688307] [2021-03-24 22:35:56,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:56,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:56,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:56,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:56,487 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:56,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 335 transitions, 8647 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:56,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:56,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:56,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:57,618 INFO L129 PetriNetUnfolder]: 774/5250 cut-off events. [2021-03-24 22:35:57,619 INFO L130 PetriNetUnfolder]: For 152098/156880 co-relation queries the response was YES. [2021-03-24 22:35:57,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35182 conditions, 5250 events. 774/5250 cut-off events. For 152098/156880 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 76148 event pairs, 531 based on Foata normal form. 30/5021 useless extension candidates. Maximal degree in co-relation 35094. Up to 982 conditions per place. [2021-03-24 22:35:57,665 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 150 selfloop transitions, 231 changer transitions 1/396 dead transitions. [2021-03-24 22:35:57,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 396 transitions, 10843 flow [2021-03-24 22:35:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:57,666 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:57,667 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:57,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:57,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:57,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:57,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:57,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:57,668 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:57,669 INFO L185 Difference]: Start difference. First operand has 200 places, 335 transitions, 8647 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:57,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 396 transitions, 10843 flow [2021-03-24 22:35:58,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 396 transitions, 10530 flow, removed 72 selfloop flow, removed 3 redundant places. [2021-03-24 22:35:58,146 INFO L241 Difference]: Finished difference. Result has 209 places, 361 transitions, 9708 flow [2021-03-24 22:35:58,147 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=8406, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9708, PETRI_PLACES=209, PETRI_TRANSITIONS=361} [2021-03-24 22:35:58,147 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 165 predicate places. [2021-03-24 22:35:58,147 INFO L480 AbstractCegarLoop]: Abstraction has has 209 places, 361 transitions, 9708 flow [2021-03-24 22:35:58,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:58,147 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:58,147 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] [2021-03-24 22:35:58,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-24 22:35:58,147 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:58,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:58,148 INFO L82 PathProgramCache]: Analyzing trace with hash 2117955118, now seen corresponding path program 16 times [2021-03-24 22:35:58,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:58,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897778163] [2021-03-24 22:35:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:58,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:58,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:58,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:58,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:58,166 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:58,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:58,173 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:58,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:58,183 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:58,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:58,196 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:35:58,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:35:58,214 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:35:58,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:35:58,236 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:35:58,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:35:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:35:58,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897778163] [2021-03-24 22:35:58,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:35:58,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:35:58,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184938428] [2021-03-24 22:35:58,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:35:58,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:35:58,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:35:58,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:35:58,258 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:35:58,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 361 transitions, 9708 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:58,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:35:58,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:35:58,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:35:59,488 INFO L129 PetriNetUnfolder]: 763/5329 cut-off events. [2021-03-24 22:35:59,488 INFO L130 PetriNetUnfolder]: For 154412/160333 co-relation queries the response was YES. [2021-03-24 22:35:59,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35737 conditions, 5329 events. 763/5329 cut-off events. For 154412/160333 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 77522 event pairs, 461 based on Foata normal form. 40/5106 useless extension candidates. Maximal degree in co-relation 35645. Up to 1144 conditions per place. [2021-03-24 22:35:59,527 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 116 selfloop transitions, 280 changer transitions 4/414 dead transitions. [2021-03-24 22:35:59,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 414 transitions, 11717 flow [2021-03-24 22:35:59,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:35:59,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:35:59,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:35:59,529 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:35:59,529 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:35:59,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:35:59,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:35:59,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:35:59,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:59,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:59,530 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:59,530 INFO L185 Difference]: Start difference. First operand has 209 places, 361 transitions, 9708 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:35:59,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 414 transitions, 11717 flow [2021-03-24 22:35:59,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 414 transitions, 11149 flow, removed 95 selfloop flow, removed 4 redundant places. [2021-03-24 22:35:59,947 INFO L241 Difference]: Finished difference. Result has 218 places, 382 transitions, 10639 flow [2021-03-24 22:35:59,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=9200, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10639, PETRI_PLACES=218, PETRI_TRANSITIONS=382} [2021-03-24 22:35:59,948 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 174 predicate places. [2021-03-24 22:35:59,948 INFO L480 AbstractCegarLoop]: Abstraction has has 218 places, 382 transitions, 10639 flow [2021-03-24 22:35:59,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:35:59,948 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:35:59,948 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] [2021-03-24 22:35:59,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-24 22:35:59,948 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:35:59,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:35:59,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2132336940, now seen corresponding path program 17 times [2021-03-24 22:35:59,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:35:59,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535735856] [2021-03-24 22:35:59,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:35:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:35:59,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:59,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:35:59,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:35:59,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:35:59,965 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:35:59,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:35:59,971 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:35:59,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:35:59,980 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:35:59,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:35:59,993 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:35:59,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:36:00,010 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:36:00,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:36:00,034 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:00,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:00,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535735856] [2021-03-24 22:36:00,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:00,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:00,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565141292] [2021-03-24 22:36:00,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:00,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:00,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:00,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:00,058 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:00,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 382 transitions, 10639 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:00,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:00,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:00,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:01,352 INFO L129 PetriNetUnfolder]: 756/5372 cut-off events. [2021-03-24 22:36:01,353 INFO L130 PetriNetUnfolder]: For 160127/166007 co-relation queries the response was YES. [2021-03-24 22:36:01,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36292 conditions, 5372 events. 756/5372 cut-off events. For 160127/166007 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 78536 event pairs, 458 based on Foata normal form. 44/5148 useless extension candidates. Maximal degree in co-relation 36195. Up to 1144 conditions per place. [2021-03-24 22:36:01,403 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 117 selfloop transitions, 285 changer transitions 1/417 dead transitions. [2021-03-24 22:36:01,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 417 transitions, 12220 flow [2021-03-24 22:36:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:01,404 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:01,404 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:01,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:01,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:01,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:01,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:01,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:01,406 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:01,406 INFO L185 Difference]: Start difference. First operand has 218 places, 382 transitions, 10639 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:01,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 417 transitions, 12220 flow [2021-03-24 22:36:01,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 417 transitions, 11882 flow, removed 60 selfloop flow, removed 4 redundant places. [2021-03-24 22:36:01,913 INFO L241 Difference]: Finished difference. Result has 226 places, 397 transitions, 11453 flow [2021-03-24 22:36:01,913 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=10347, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11453, PETRI_PLACES=226, PETRI_TRANSITIONS=397} [2021-03-24 22:36:01,913 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 182 predicate places. [2021-03-24 22:36:01,913 INFO L480 AbstractCegarLoop]: Abstraction has has 226 places, 397 transitions, 11453 flow [2021-03-24 22:36:01,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:01,913 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:01,913 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] [2021-03-24 22:36:01,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-24 22:36:01,914 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:01,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:01,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1431536288, now seen corresponding path program 18 times [2021-03-24 22:36:01,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:01,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93003222] [2021-03-24 22:36:01,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:01,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:01,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:01,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:01,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:01,931 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:01,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:01,938 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:01,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:01,948 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:36:01,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:36:01,961 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:36:01,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:36:01,979 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:01,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:02,002 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:02,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:02,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:02,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93003222] [2021-03-24 22:36:02,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:02,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:02,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769598390] [2021-03-24 22:36:02,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:02,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:02,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:02,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:02,025 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:02,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 397 transitions, 11453 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:02,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:02,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:02,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:03,408 INFO L129 PetriNetUnfolder]: 754/5373 cut-off events. [2021-03-24 22:36:03,408 INFO L130 PetriNetUnfolder]: For 163490/169378 co-relation queries the response was YES. [2021-03-24 22:36:03,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36845 conditions, 5373 events. 754/5373 cut-off events. For 163490/169378 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 78561 event pairs, 464 based on Foata normal form. 44/5149 useless extension candidates. Maximal degree in co-relation 36745. Up to 1144 conditions per place. [2021-03-24 22:36:03,453 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 98 selfloop transitions, 314 changer transitions 4/430 dead transitions. [2021-03-24 22:36:03,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 430 transitions, 13058 flow [2021-03-24 22:36:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:03,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:03,454 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:03,454 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:03,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:03,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:03,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:03,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:03,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:03,456 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:03,456 INFO L185 Difference]: Start difference. First operand has 226 places, 397 transitions, 11453 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:03,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 430 transitions, 13058 flow [2021-03-24 22:36:03,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 430 transitions, 12486 flow, removed 69 selfloop flow, removed 4 redundant places. [2021-03-24 22:36:03,983 INFO L241 Difference]: Finished difference. Result has 234 places, 401 transitions, 11879 flow [2021-03-24 22:36:03,983 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=10931, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11879, PETRI_PLACES=234, PETRI_TRANSITIONS=401} [2021-03-24 22:36:03,983 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 190 predicate places. [2021-03-24 22:36:03,983 INFO L480 AbstractCegarLoop]: Abstraction has has 234 places, 401 transitions, 11879 flow [2021-03-24 22:36:03,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:03,984 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:03,984 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] [2021-03-24 22:36:03,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-24 22:36:03,984 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:03,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:03,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1108286522, now seen corresponding path program 19 times [2021-03-24 22:36:03,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:03,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776069270] [2021-03-24 22:36:03,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:04,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:04,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:04,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:04,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:04,006 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:04,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:04,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:36:04,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:36:04,021 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:04,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:04,033 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:36:04,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:36:04,051 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:36:04,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:36:04,074 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:04,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:04,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776069270] [2021-03-24 22:36:04,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:04,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:04,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552278011] [2021-03-24 22:36:04,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:04,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:04,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:04,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:04,099 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:04,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 401 transitions, 11879 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:04,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:04,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:04,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:05,455 INFO L129 PetriNetUnfolder]: 738/5496 cut-off events. [2021-03-24 22:36:05,455 INFO L130 PetriNetUnfolder]: For 170460/176348 co-relation queries the response was YES. [2021-03-24 22:36:05,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37976 conditions, 5496 events. 738/5496 cut-off events. For 170460/176348 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 81336 event pairs, 408 based on Foata normal form. 33/5244 useless extension candidates. Maximal degree in co-relation 37872. Up to 1023 conditions per place. [2021-03-24 22:36:05,509 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 230 selfloop transitions, 238 changer transitions 2/484 dead transitions. [2021-03-24 22:36:05,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 484 transitions, 15002 flow [2021-03-24 22:36:05,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:05,510 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:05,510 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:05,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:05,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:05,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:05,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:05,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:05,512 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:05,512 INFO L185 Difference]: Start difference. First operand has 234 places, 401 transitions, 11879 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:05,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 484 transitions, 15002 flow [2021-03-24 22:36:06,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 484 transitions, 14382 flow, removed 78 selfloop flow, removed 7 redundant places. [2021-03-24 22:36:06,168 INFO L241 Difference]: Finished difference. Result has 239 places, 437 transitions, 13152 flow [2021-03-24 22:36:06,168 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=11370, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13152, PETRI_PLACES=239, PETRI_TRANSITIONS=437} [2021-03-24 22:36:06,168 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 195 predicate places. [2021-03-24 22:36:06,168 INFO L480 AbstractCegarLoop]: Abstraction has has 239 places, 437 transitions, 13152 flow [2021-03-24 22:36:06,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:06,168 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:06,168 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] [2021-03-24 22:36:06,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-24 22:36:06,169 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:06,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:06,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1548443452, now seen corresponding path program 20 times [2021-03-24 22:36:06,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:06,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394300700] [2021-03-24 22:36:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:06,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:06,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:06,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:06,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:06,187 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:06,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:06,195 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:06,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:06,205 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:36:06,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:36:06,219 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:36:06,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:36:06,238 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:06,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:06,260 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:06,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:06,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:06,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394300700] [2021-03-24 22:36:06,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:06,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:06,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056531389] [2021-03-24 22:36:06,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:06,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:06,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:06,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:06,283 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:06,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 437 transitions, 13152 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:06,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:06,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:06,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:07,745 INFO L129 PetriNetUnfolder]: 737/5516 cut-off events. [2021-03-24 22:36:07,745 INFO L130 PetriNetUnfolder]: For 162952/168367 co-relation queries the response was YES. [2021-03-24 22:36:07,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37327 conditions, 5516 events. 737/5516 cut-off events. For 162952/168367 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 81619 event pairs, 472 based on Foata normal form. 44/5275 useless extension candidates. Maximal degree in co-relation 37222. Up to 1144 conditions per place. [2021-03-24 22:36:07,790 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 86 selfloop transitions, 360 changer transitions 1/461 dead transitions. [2021-03-24 22:36:07,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 461 transitions, 14561 flow [2021-03-24 22:36:07,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:07,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:07,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:07,792 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:07,792 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:07,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:07,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:07,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:07,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:07,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:07,793 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:07,793 INFO L185 Difference]: Start difference. First operand has 239 places, 437 transitions, 13152 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:07,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 461 transitions, 14561 flow [2021-03-24 22:36:08,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 461 transitions, 14039 flow, removed 74 selfloop flow, removed 5 redundant places. [2021-03-24 22:36:08,359 INFO L241 Difference]: Finished difference. Result has 245 places, 442 transitions, 13638 flow [2021-03-24 22:36:08,359 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=12650, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13638, PETRI_PLACES=245, PETRI_TRANSITIONS=442} [2021-03-24 22:36:08,359 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 201 predicate places. [2021-03-24 22:36:08,359 INFO L480 AbstractCegarLoop]: Abstraction has has 245 places, 442 transitions, 13638 flow [2021-03-24 22:36:08,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:08,359 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:08,359 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] [2021-03-24 22:36:08,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-24 22:36:08,360 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:08,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:08,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1788476212, now seen corresponding path program 21 times [2021-03-24 22:36:08,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:08,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219470630] [2021-03-24 22:36:08,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:08,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:08,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:08,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:08,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:08,375 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:08,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:08,381 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:08,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:08,390 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:08,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:08,402 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:36:08,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:36:08,418 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:08,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:08,441 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:08,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:08,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219470630] [2021-03-24 22:36:08,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:08,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:08,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546133262] [2021-03-24 22:36:08,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:08,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:08,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:08,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:08,465 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:08,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 442 transitions, 13638 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:08,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:08,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:08,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:09,979 INFO L129 PetriNetUnfolder]: 727/5564 cut-off events. [2021-03-24 22:36:09,979 INFO L130 PetriNetUnfolder]: For 164332/169739 co-relation queries the response was YES. [2021-03-24 22:36:10,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37778 conditions, 5564 events. 727/5564 cut-off events. For 164332/169739 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 82792 event pairs, 461 based on Foata normal form. 44/5317 useless extension candidates. Maximal degree in co-relation 37671. Up to 1144 conditions per place. [2021-03-24 22:36:10,033 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 158 selfloop transitions, 296 changer transitions 1/469 dead transitions. [2021-03-24 22:36:10,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 469 transitions, 15124 flow [2021-03-24 22:36:10,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:10,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:10,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:10,034 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:10,034 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:10,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:10,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:10,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:10,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:10,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:10,036 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:10,036 INFO L185 Difference]: Start difference. First operand has 245 places, 442 transitions, 13638 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:10,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 469 transitions, 15124 flow [2021-03-24 22:36:10,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 469 transitions, 14475 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-03-24 22:36:10,678 INFO L241 Difference]: Finished difference. Result has 251 places, 446 transitions, 13767 flow [2021-03-24 22:36:10,679 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=13006, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13767, PETRI_PLACES=251, PETRI_TRANSITIONS=446} [2021-03-24 22:36:10,679 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 207 predicate places. [2021-03-24 22:36:10,679 INFO L480 AbstractCegarLoop]: Abstraction has has 251 places, 446 transitions, 13767 flow [2021-03-24 22:36:10,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:10,679 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:10,679 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] [2021-03-24 22:36:10,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-24 22:36:10,679 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:10,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:10,679 INFO L82 PathProgramCache]: Analyzing trace with hash -95877172, now seen corresponding path program 22 times [2021-03-24 22:36:10,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:10,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433598084] [2021-03-24 22:36:10,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:10,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:10,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:10,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:10,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:10,696 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:10,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:10,703 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:10,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:10,712 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:10,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:10,725 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:36:10,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:36:10,742 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:10,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:10,765 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:10,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:10,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433598084] [2021-03-24 22:36:10,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:10,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:10,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792263803] [2021-03-24 22:36:10,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:10,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:10,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:10,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:10,788 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:10,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 446 transitions, 13767 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:10,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:10,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:10,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:12,334 INFO L129 PetriNetUnfolder]: 715/5616 cut-off events. [2021-03-24 22:36:12,334 INFO L130 PetriNetUnfolder]: For 167395/172802 co-relation queries the response was YES. [2021-03-24 22:36:12,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38166 conditions, 5616 events. 715/5616 cut-off events. For 167395/172802 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 84073 event pairs, 452 based on Foata normal form. 44/5361 useless extension candidates. Maximal degree in co-relation 38056. Up to 1144 conditions per place. [2021-03-24 22:36:12,380 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 171 selfloop transitions, 305 changer transitions 2/492 dead transitions. [2021-03-24 22:36:12,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 492 transitions, 15913 flow [2021-03-24 22:36:12,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:12,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:12,381 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:12,381 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:12,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:12,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:12,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:12,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:12,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:12,382 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:12,382 INFO L185 Difference]: Start difference. First operand has 251 places, 446 transitions, 13767 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:12,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 492 transitions, 15913 flow [2021-03-24 22:36:12,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 492 transitions, 15301 flow, removed 21 selfloop flow, removed 5 redundant places. [2021-03-24 22:36:12,991 INFO L241 Difference]: Finished difference. Result has 258 places, 468 transitions, 14643 flow [2021-03-24 22:36:12,991 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=13178, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14643, PETRI_PLACES=258, PETRI_TRANSITIONS=468} [2021-03-24 22:36:12,991 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 214 predicate places. [2021-03-24 22:36:12,991 INFO L480 AbstractCegarLoop]: Abstraction has has 258 places, 468 transitions, 14643 flow [2021-03-24 22:36:12,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:12,992 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:12,992 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] [2021-03-24 22:36:12,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-24 22:36:12,992 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:12,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:12,992 INFO L82 PathProgramCache]: Analyzing trace with hash -2031332696, now seen corresponding path program 23 times [2021-03-24 22:36:12,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:12,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555246675] [2021-03-24 22:36:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:13,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:13,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:13,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:13,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:13,006 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:13,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:13,012 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:13,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:13,021 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:13,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:13,032 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:36:13,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:36:13,049 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:13,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:13,073 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:13,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:13,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555246675] [2021-03-24 22:36:13,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:13,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:13,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989695185] [2021-03-24 22:36:13,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:13,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:13,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:13,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:13,097 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:13,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 468 transitions, 14643 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:13,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:13,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:13,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:14,637 INFO L129 PetriNetUnfolder]: 713/5617 cut-off events. [2021-03-24 22:36:14,637 INFO L130 PetriNetUnfolder]: For 171898/177434 co-relation queries the response was YES. [2021-03-24 22:36:14,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38535 conditions, 5617 events. 713/5617 cut-off events. For 171898/177434 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 84073 event pairs, 461 based on Foata normal form. 48/5370 useless extension candidates. Maximal degree in co-relation 38421. Up to 1144 conditions per place. [2021-03-24 22:36:14,684 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 166 selfloop transitions, 310 changer transitions 1/491 dead transitions. [2021-03-24 22:36:14,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 491 transitions, 16111 flow [2021-03-24 22:36:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:14,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:14,686 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:14,686 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:14,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:14,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:14,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:14,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:14,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:14,687 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:14,687 INFO L185 Difference]: Start difference. First operand has 258 places, 468 transitions, 14643 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:14,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 491 transitions, 16111 flow [2021-03-24 22:36:15,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 491 transitions, 15489 flow, removed 85 selfloop flow, removed 4 redundant places. [2021-03-24 22:36:15,406 INFO L241 Difference]: Finished difference. Result has 265 places, 473 transitions, 14903 flow [2021-03-24 22:36:15,406 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14067, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14903, PETRI_PLACES=265, PETRI_TRANSITIONS=473} [2021-03-24 22:36:15,406 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 221 predicate places. [2021-03-24 22:36:15,406 INFO L480 AbstractCegarLoop]: Abstraction has has 265 places, 473 transitions, 14903 flow [2021-03-24 22:36:15,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:15,406 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:15,406 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] [2021-03-24 22:36:15,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-24 22:36:15,407 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:15,407 INFO L82 PathProgramCache]: Analyzing trace with hash -521849848, now seen corresponding path program 24 times [2021-03-24 22:36:15,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:15,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232702713] [2021-03-24 22:36:15,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:15,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:15,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:15,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:15,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:15,422 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:15,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:15,428 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:15,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:15,437 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:36:15,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:36:15,449 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:36:15,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:36:15,466 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:15,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:15,489 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:15,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:15,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232702713] [2021-03-24 22:36:15,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:15,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:15,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535535611] [2021-03-24 22:36:15,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:15,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:15,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:15,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:15,513 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:15,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 473 transitions, 14903 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:15,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:15,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:15,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:17,148 INFO L129 PetriNetUnfolder]: 712/5616 cut-off events. [2021-03-24 22:36:17,149 INFO L130 PetriNetUnfolder]: For 171300/176836 co-relation queries the response was YES. [2021-03-24 22:36:17,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38596 conditions, 5616 events. 712/5616 cut-off events. For 171300/176836 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 84041 event pairs, 460 based on Foata normal form. 48/5368 useless extension candidates. Maximal degree in co-relation 38479. Up to 1144 conditions per place. [2021-03-24 22:36:17,198 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 108 selfloop transitions, 367 changer transitions 2/491 dead transitions. [2021-03-24 22:36:17,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 491 transitions, 16191 flow [2021-03-24 22:36:17,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:17,199 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:17,199 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:17,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:17,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:17,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:17,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:17,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:17,200 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:17,200 INFO L185 Difference]: Start difference. First operand has 265 places, 473 transitions, 14903 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:17,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 491 transitions, 16191 flow [2021-03-24 22:36:17,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 491 transitions, 15558 flow, removed 26 selfloop flow, removed 5 redundant places. [2021-03-24 22:36:17,896 INFO L241 Difference]: Finished difference. Result has 270 places, 475 transitions, 15096 flow [2021-03-24 22:36:17,896 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14285, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15096, PETRI_PLACES=270, PETRI_TRANSITIONS=475} [2021-03-24 22:36:17,897 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 226 predicate places. [2021-03-24 22:36:17,897 INFO L480 AbstractCegarLoop]: Abstraction has has 270 places, 475 transitions, 15096 flow [2021-03-24 22:36:17,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:17,897 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:17,897 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] [2021-03-24 22:36:17,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-24 22:36:17,897 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:17,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:17,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1581125982, now seen corresponding path program 25 times [2021-03-24 22:36:17,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:17,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753298200] [2021-03-24 22:36:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:17,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:17,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:17,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:17,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:17,913 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:17,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:17,919 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:17,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:17,928 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:36:17,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:36:17,940 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:36:17,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:36:17,958 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:36:17,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:36:17,982 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:17,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:18,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753298200] [2021-03-24 22:36:18,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:18,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:18,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075286669] [2021-03-24 22:36:18,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:18,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:18,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:18,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:18,006 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:18,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 475 transitions, 15096 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:18,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:18,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:18,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:19,535 INFO L129 PetriNetUnfolder]: 712/5610 cut-off events. [2021-03-24 22:36:19,535 INFO L130 PetriNetUnfolder]: For 170989/176525 co-relation queries the response was YES. [2021-03-24 22:36:19,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38651 conditions, 5610 events. 712/5610 cut-off events. For 170989/176525 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 83907 event pairs, 460 based on Foata normal form. 48/5363 useless extension candidates. Maximal degree in co-relation 38532. Up to 1144 conditions per place. [2021-03-24 22:36:19,581 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 99 selfloop transitions, 375 changer transitions 3/491 dead transitions. [2021-03-24 22:36:19,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 491 transitions, 16333 flow [2021-03-24 22:36:19,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:19,583 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:19,583 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:19,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:19,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:19,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:19,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:19,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:19,584 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:19,584 INFO L185 Difference]: Start difference. First operand has 270 places, 475 transitions, 15096 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:19,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 491 transitions, 16333 flow [2021-03-24 22:36:20,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 491 transitions, 15597 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-03-24 22:36:20,285 INFO L241 Difference]: Finished difference. Result has 273 places, 475 transitions, 15142 flow [2021-03-24 22:36:20,285 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14371, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=374, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15142, PETRI_PLACES=273, PETRI_TRANSITIONS=475} [2021-03-24 22:36:20,285 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 229 predicate places. [2021-03-24 22:36:20,285 INFO L480 AbstractCegarLoop]: Abstraction has has 273 places, 475 transitions, 15142 flow [2021-03-24 22:36:20,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:20,285 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:20,285 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] [2021-03-24 22:36:20,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-24 22:36:20,286 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:20,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:20,286 INFO L82 PathProgramCache]: Analyzing trace with hash -819022606, now seen corresponding path program 26 times [2021-03-24 22:36:20,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:20,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004300051] [2021-03-24 22:36:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:20,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:20,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:20,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:20,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:20,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:20,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:20,307 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:20,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:20,316 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:20,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:20,328 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:36:20,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:36:20,345 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:20,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:20,369 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:20,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:20,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004300051] [2021-03-24 22:36:20,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:20,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:20,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80484543] [2021-03-24 22:36:20,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:20,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:20,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:20,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:20,393 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:20,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 475 transitions, 15142 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:20,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:20,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:20,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:22,030 INFO L129 PetriNetUnfolder]: 712/5602 cut-off events. [2021-03-24 22:36:22,030 INFO L130 PetriNetUnfolder]: For 171157/176693 co-relation queries the response was YES. [2021-03-24 22:36:22,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38616 conditions, 5602 events. 712/5602 cut-off events. For 171157/176693 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 83778 event pairs, 460 based on Foata normal form. 48/5356 useless extension candidates. Maximal degree in co-relation 38496. Up to 1144 conditions per place. [2021-03-24 22:36:22,083 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 153 selfloop transitions, 319 changer transitions 1/487 dead transitions. [2021-03-24 22:36:22,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 487 transitions, 16244 flow [2021-03-24 22:36:22,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:22,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:22,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:22,085 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:22,085 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:22,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:22,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:22,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:22,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:22,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:22,086 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:22,086 INFO L185 Difference]: Start difference. First operand has 273 places, 475 transitions, 15142 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:22,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 487 transitions, 16244 flow [2021-03-24 22:36:22,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 487 transitions, 15489 flow, removed 12 selfloop flow, removed 8 redundant places. [2021-03-24 22:36:22,833 INFO L241 Difference]: Finished difference. Result has 273 places, 474 transitions, 15006 flow [2021-03-24 22:36:22,834 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14399, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15006, PETRI_PLACES=273, PETRI_TRANSITIONS=474} [2021-03-24 22:36:22,834 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 229 predicate places. [2021-03-24 22:36:22,834 INFO L480 AbstractCegarLoop]: Abstraction has has 273 places, 474 transitions, 15006 flow [2021-03-24 22:36:22,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:22,834 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:22,834 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] [2021-03-24 22:36:22,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-24 22:36:22,834 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:22,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:22,835 INFO L82 PathProgramCache]: Analyzing trace with hash -596829574, now seen corresponding path program 27 times [2021-03-24 22:36:22,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:22,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944103082] [2021-03-24 22:36:22,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:22,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:22,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:22,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:22,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:22,851 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:22,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:22,857 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:22,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:22,867 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:22,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:22,880 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:36:22,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:36:22,907 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:22,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:22,929 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:22,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:22,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944103082] [2021-03-24 22:36:22,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:22,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:22,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33747731] [2021-03-24 22:36:22,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:22,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:22,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:22,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:22,953 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:22,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 474 transitions, 15006 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:22,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:22,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:22,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:24,520 INFO L129 PetriNetUnfolder]: 712/5598 cut-off events. [2021-03-24 22:36:24,520 INFO L130 PetriNetUnfolder]: For 169929/175465 co-relation queries the response was YES. [2021-03-24 22:36:24,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38520 conditions, 5598 events. 712/5598 cut-off events. For 169929/175465 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 83718 event pairs, 460 based on Foata normal form. 48/5353 useless extension candidates. Maximal degree in co-relation 38402. Up to 1144 conditions per place. [2021-03-24 22:36:24,568 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 162 selfloop transitions, 314 changer transitions 1/491 dead transitions. [2021-03-24 22:36:24,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 491 transitions, 16266 flow [2021-03-24 22:36:24,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:24,575 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:24,575 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:24,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:24,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:24,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:24,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:24,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:24,580 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:24,580 INFO L185 Difference]: Start difference. First operand has 273 places, 474 transitions, 15006 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:24,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 491 transitions, 16266 flow [2021-03-24 22:36:25,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 491 transitions, 15599 flow, removed 12 selfloop flow, removed 7 redundant places. [2021-03-24 22:36:25,255 INFO L241 Difference]: Finished difference. Result has 277 places, 477 transitions, 15137 flow [2021-03-24 22:36:25,255 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14356, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15137, PETRI_PLACES=277, PETRI_TRANSITIONS=477} [2021-03-24 22:36:25,255 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 233 predicate places. [2021-03-24 22:36:25,255 INFO L480 AbstractCegarLoop]: Abstraction has has 277 places, 477 transitions, 15137 flow [2021-03-24 22:36:25,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:25,256 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:25,256 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] [2021-03-24 22:36:25,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-24 22:36:25,256 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:25,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:25,256 INFO L82 PathProgramCache]: Analyzing trace with hash -249139980, now seen corresponding path program 28 times [2021-03-24 22:36:25,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:25,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322529785] [2021-03-24 22:36:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:25,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:25,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:25,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:25,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:25,271 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:25,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:25,277 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:25,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:25,286 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:36:25,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:36:25,299 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:36:25,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:36:25,316 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:25,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:25,339 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:25,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:25,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322529785] [2021-03-24 22:36:25,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:25,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:25,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573479356] [2021-03-24 22:36:25,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:25,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:25,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:25,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:25,364 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:25,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 477 transitions, 15137 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:25,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:25,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:25,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:26,981 INFO L129 PetriNetUnfolder]: 712/5592 cut-off events. [2021-03-24 22:36:26,981 INFO L130 PetriNetUnfolder]: For 170355/175891 co-relation queries the response was YES. [2021-03-24 22:36:27,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38503 conditions, 5592 events. 712/5592 cut-off events. For 170355/175891 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 83527 event pairs, 460 based on Foata normal form. 48/5347 useless extension candidates. Maximal degree in co-relation 38383. Up to 1144 conditions per place. [2021-03-24 22:36:27,035 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 114 selfloop transitions, 367 changer transitions 2/497 dead transitions. [2021-03-24 22:36:27,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 497 transitions, 16550 flow [2021-03-24 22:36:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:27,036 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:27,037 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:27,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:27,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:27,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:27,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:27,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:27,038 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:27,038 INFO L185 Difference]: Start difference. First operand has 277 places, 477 transitions, 15137 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:27,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 497 transitions, 16550 flow [2021-03-24 22:36:27,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 497 transitions, 15949 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-24 22:36:27,802 INFO L241 Difference]: Finished difference. Result has 282 places, 480 transitions, 15486 flow [2021-03-24 22:36:27,802 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14552, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15486, PETRI_PLACES=282, PETRI_TRANSITIONS=480} [2021-03-24 22:36:27,803 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 238 predicate places. [2021-03-24 22:36:27,803 INFO L480 AbstractCegarLoop]: Abstraction has has 282 places, 480 transitions, 15486 flow [2021-03-24 22:36:27,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:27,803 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:27,803 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] [2021-03-24 22:36:27,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-24 22:36:27,803 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:27,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:27,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1046625360, now seen corresponding path program 29 times [2021-03-24 22:36:27,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:27,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739182584] [2021-03-24 22:36:27,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:27,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:27,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:27,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:27,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:27,819 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:27,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:27,825 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:27,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:27,835 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:27,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:27,848 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:36:27,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:36:27,865 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:27,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:27,887 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:27,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:27,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739182584] [2021-03-24 22:36:27,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:27,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:27,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621435847] [2021-03-24 22:36:27,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:27,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:27,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:27,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:27,910 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:27,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 480 transitions, 15486 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:27,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:27,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:27,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:29,419 INFO L129 PetriNetUnfolder]: 712/5586 cut-off events. [2021-03-24 22:36:29,419 INFO L130 PetriNetUnfolder]: For 171984/177520 co-relation queries the response was YES. [2021-03-24 22:36:29,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38651 conditions, 5586 events. 712/5586 cut-off events. For 171984/177520 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 83497 event pairs, 460 based on Foata normal form. 48/5342 useless extension candidates. Maximal degree in co-relation 38529. Up to 1144 conditions per place. [2021-03-24 22:36:29,477 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 168 selfloop transitions, 312 changer transitions 2/496 dead transitions. [2021-03-24 22:36:29,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 496 transitions, 16728 flow [2021-03-24 22:36:29,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:29,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:29,478 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:29,478 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:29,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:29,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:29,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:29,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:29,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:29,480 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:29,480 INFO L185 Difference]: Start difference. First operand has 282 places, 480 transitions, 15486 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:29,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 496 transitions, 16728 flow [2021-03-24 22:36:30,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 496 transitions, 16064 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-03-24 22:36:30,315 INFO L241 Difference]: Finished difference. Result has 285 places, 483 transitions, 15566 flow [2021-03-24 22:36:30,315 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14837, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15566, PETRI_PLACES=285, PETRI_TRANSITIONS=483} [2021-03-24 22:36:30,315 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 241 predicate places. [2021-03-24 22:36:30,315 INFO L480 AbstractCegarLoop]: Abstraction has has 285 places, 483 transitions, 15566 flow [2021-03-24 22:36:30,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:30,316 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:30,316 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] [2021-03-24 22:36:30,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-24 22:36:30,316 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:30,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:30,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1985761560, now seen corresponding path program 30 times [2021-03-24 22:36:30,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:30,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971857537] [2021-03-24 22:36:30,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:30,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:30,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:30,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:30,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:30,333 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:30,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:30,338 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:30,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:30,347 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:36:30,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:36:30,359 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:36:30,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:36:30,376 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:36:30,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:36:30,400 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:30,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:30,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971857537] [2021-03-24 22:36:30,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:30,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:30,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037042532] [2021-03-24 22:36:30,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:30,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:30,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:30,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:30,424 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:30,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 483 transitions, 15566 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:30,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:30,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:30,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:31,905 INFO L129 PetriNetUnfolder]: 712/5529 cut-off events. [2021-03-24 22:36:31,905 INFO L130 PetriNetUnfolder]: For 173743/177856 co-relation queries the response was YES. [2021-03-24 22:36:31,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38645 conditions, 5529 events. 712/5529 cut-off events. For 173743/177856 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 82471 event pairs, 544 based on Foata normal form. 48/5283 useless extension candidates. Maximal degree in co-relation 38523. Up to 1144 conditions per place. [2021-03-24 22:36:31,959 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 112 selfloop transitions, 370 changer transitions 2/498 dead transitions. [2021-03-24 22:36:31,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 498 transitions, 16815 flow [2021-03-24 22:36:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:31,960 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:31,960 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:31,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:31,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:31,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:31,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:31,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:31,962 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:31,962 INFO L185 Difference]: Start difference. First operand has 285 places, 483 transitions, 15566 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:31,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 498 transitions, 16815 flow [2021-03-24 22:36:32,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 498 transitions, 16178 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-24 22:36:32,744 INFO L241 Difference]: Finished difference. Result has 288 places, 485 transitions, 15788 flow [2021-03-24 22:36:32,745 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=14947, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15788, PETRI_PLACES=288, PETRI_TRANSITIONS=485} [2021-03-24 22:36:32,745 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 244 predicate places. [2021-03-24 22:36:32,745 INFO L480 AbstractCegarLoop]: Abstraction has has 288 places, 485 transitions, 15788 flow [2021-03-24 22:36:32,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:32,745 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:32,745 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] [2021-03-24 22:36:32,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-24 22:36:32,745 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:32,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:32,746 INFO L82 PathProgramCache]: Analyzing trace with hash 253707000, now seen corresponding path program 31 times [2021-03-24 22:36:32,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:32,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864478594] [2021-03-24 22:36:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:32,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:32,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:32,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:32,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:32,761 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:32,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:32,767 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:32,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:32,776 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:32,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:32,788 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:36:32,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:36:32,816 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:36:32,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:36:32,840 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:32,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:32,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864478594] [2021-03-24 22:36:32,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:32,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:32,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109686577] [2021-03-24 22:36:32,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:32,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:32,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:32,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:32,863 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:32,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 485 transitions, 15788 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:32,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:32,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:32,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:34,354 INFO L129 PetriNetUnfolder]: 712/5573 cut-off events. [2021-03-24 22:36:34,354 INFO L130 PetriNetUnfolder]: For 171909/177445 co-relation queries the response was YES. [2021-03-24 22:36:34,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38718 conditions, 5573 events. 712/5573 cut-off events. For 171909/177445 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 83198 event pairs, 460 based on Foata normal form. 48/5330 useless extension candidates. Maximal degree in co-relation 38595. Up to 1144 conditions per place. [2021-03-24 22:36:34,406 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 168 selfloop transitions, 314 changer transitions 2/498 dead transitions. [2021-03-24 22:36:34,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 498 transitions, 16938 flow [2021-03-24 22:36:34,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:34,407 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:34,407 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:34,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:34,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:34,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:34,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:34,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:34,408 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:34,408 INFO L185 Difference]: Start difference. First operand has 288 places, 485 transitions, 15788 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:34,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 498 transitions, 16938 flow [2021-03-24 22:36:35,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 498 transitions, 16191 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-24 22:36:35,101 INFO L241 Difference]: Finished difference. Result has 291 places, 485 transitions, 15689 flow [2021-03-24 22:36:35,101 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15055, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15689, PETRI_PLACES=291, PETRI_TRANSITIONS=485} [2021-03-24 22:36:35,101 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 247 predicate places. [2021-03-24 22:36:35,101 INFO L480 AbstractCegarLoop]: Abstraction has has 291 places, 485 transitions, 15689 flow [2021-03-24 22:36:35,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:35,101 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:35,101 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] [2021-03-24 22:36:35,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-24 22:36:35,102 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:35,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:35,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1271223456, now seen corresponding path program 32 times [2021-03-24 22:36:35,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:35,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414881493] [2021-03-24 22:36:35,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:35,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:35,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:35,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:35,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:35,116 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:35,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:35,122 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:35,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:35,130 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:35,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:35,142 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:36:35,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:36:35,159 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:35,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:35,182 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:35,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:35,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414881493] [2021-03-24 22:36:35,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:35,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:35,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640480684] [2021-03-24 22:36:35,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:35,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:35,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:35,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:35,206 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:35,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 485 transitions, 15689 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:35,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:35,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:35,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:37,013 INFO L129 PetriNetUnfolder]: 704/5611 cut-off events. [2021-03-24 22:36:37,013 INFO L130 PetriNetUnfolder]: For 172647/178183 co-relation queries the response was YES. [2021-03-24 22:36:37,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38843 conditions, 5611 events. 704/5611 cut-off events. For 172647/178183 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 84126 event pairs, 452 based on Foata normal form. 48/5362 useless extension candidates. Maximal degree in co-relation 38719. Up to 1144 conditions per place. [2021-03-24 22:36:37,065 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 188 selfloop transitions, 305 changer transitions 1/508 dead transitions. [2021-03-24 22:36:37,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 508 transitions, 17204 flow [2021-03-24 22:36:37,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:37,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:37,066 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:37,066 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:37,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:37,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:37,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:37,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:37,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:37,067 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:37,067 INFO L185 Difference]: Start difference. First operand has 291 places, 485 transitions, 15689 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:37,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 508 transitions, 17204 flow [2021-03-24 22:36:37,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 508 transitions, 16571 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 22:36:37,811 INFO L241 Difference]: Finished difference. Result has 296 places, 492 transitions, 15994 flow [2021-03-24 22:36:37,811 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15070, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15994, PETRI_PLACES=296, PETRI_TRANSITIONS=492} [2021-03-24 22:36:37,811 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 252 predicate places. [2021-03-24 22:36:37,811 INFO L480 AbstractCegarLoop]: Abstraction has has 296 places, 492 transitions, 15994 flow [2021-03-24 22:36:37,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:37,811 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:37,811 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] [2021-03-24 22:36:37,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-24 22:36:37,812 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:37,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:37,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1501280288, now seen corresponding path program 33 times [2021-03-24 22:36:37,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:37,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90864585] [2021-03-24 22:36:37,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:37,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:37,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:37,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:37,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:37,826 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:37,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:37,832 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:37,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:37,840 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:37,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:37,852 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:36:37,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:36:37,869 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:37,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:37,892 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:37,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:37,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90864585] [2021-03-24 22:36:37,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:37,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:37,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113624809] [2021-03-24 22:36:37,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:37,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:37,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:37,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:37,915 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:37,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 492 transitions, 15994 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:37,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:37,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:37,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:39,615 INFO L129 PetriNetUnfolder]: 704/5605 cut-off events. [2021-03-24 22:36:39,615 INFO L130 PetriNetUnfolder]: For 174730/180261 co-relation queries the response was YES. [2021-03-24 22:36:39,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38925 conditions, 5605 events. 704/5605 cut-off events. For 174730/180261 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 84027 event pairs, 452 based on Foata normal form. 46/5363 useless extension candidates. Maximal degree in co-relation 38798. Up to 1144 conditions per place. [2021-03-24 22:36:39,665 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 184 selfloop transitions, 312 changer transitions 2/512 dead transitions. [2021-03-24 22:36:39,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 512 transitions, 17396 flow [2021-03-24 22:36:39,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:39,666 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:39,666 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:39,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:39,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:39,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:39,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:39,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:39,667 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:39,667 INFO L185 Difference]: Start difference. First operand has 296 places, 492 transitions, 15994 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:39,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 512 transitions, 17396 flow [2021-03-24 22:36:40,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 512 transitions, 16788 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-03-24 22:36:40,451 INFO L241 Difference]: Finished difference. Result has 301 places, 496 transitions, 16183 flow [2021-03-24 22:36:40,452 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15398, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16183, PETRI_PLACES=301, PETRI_TRANSITIONS=496} [2021-03-24 22:36:40,452 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 257 predicate places. [2021-03-24 22:36:40,452 INFO L480 AbstractCegarLoop]: Abstraction has has 301 places, 496 transitions, 16183 flow [2021-03-24 22:36:40,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:40,452 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:40,452 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] [2021-03-24 22:36:40,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-24 22:36:40,452 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:40,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:40,452 INFO L82 PathProgramCache]: Analyzing trace with hash 849153132, now seen corresponding path program 34 times [2021-03-24 22:36:40,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:40,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70048693] [2021-03-24 22:36:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:40,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:40,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:40,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:40,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:40,468 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:40,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:40,474 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:40,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:40,483 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:40,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:40,494 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:36:40,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:36:40,512 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:36:40,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:36:40,535 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:40,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:40,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:40,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70048693] [2021-03-24 22:36:40,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:40,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:40,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502573869] [2021-03-24 22:36:40,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:40,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:40,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:40,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:40,559 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:40,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 496 transitions, 16183 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:40,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:40,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:40,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:42,308 INFO L129 PetriNetUnfolder]: 704/5598 cut-off events. [2021-03-24 22:36:42,308 INFO L130 PetriNetUnfolder]: For 175491/181002 co-relation queries the response was YES. [2021-03-24 22:36:42,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38988 conditions, 5598 events. 704/5598 cut-off events. For 175491/181002 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 83838 event pairs, 452 based on Foata normal form. 46/5349 useless extension candidates. Maximal degree in co-relation 38859. Up to 1144 conditions per place. [2021-03-24 22:36:42,356 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 174 selfloop transitions, 320 changer transitions 2/510 dead transitions. [2021-03-24 22:36:42,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 510 transitions, 17401 flow [2021-03-24 22:36:42,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:42,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:42,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:42,357 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:42,357 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:42,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:42,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:42,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:42,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:42,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:42,358 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:42,358 INFO L185 Difference]: Start difference. First operand has 301 places, 496 transitions, 16183 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:42,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 510 transitions, 17401 flow [2021-03-24 22:36:43,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 510 transitions, 16799 flow, removed 11 selfloop flow, removed 8 redundant places. [2021-03-24 22:36:43,146 INFO L241 Difference]: Finished difference. Result has 301 places, 494 transitions, 16149 flow [2021-03-24 22:36:43,147 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15591, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16149, PETRI_PLACES=301, PETRI_TRANSITIONS=494} [2021-03-24 22:36:43,147 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 257 predicate places. [2021-03-24 22:36:43,147 INFO L480 AbstractCegarLoop]: Abstraction has has 301 places, 494 transitions, 16149 flow [2021-03-24 22:36:43,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:43,147 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:43,147 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] [2021-03-24 22:36:43,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-24 22:36:43,147 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:43,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:43,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1502785078, now seen corresponding path program 35 times [2021-03-24 22:36:43,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:43,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060009582] [2021-03-24 22:36:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:43,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:43,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:43,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:43,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:43,162 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:43,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:43,167 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:43,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:43,177 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:43,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:43,189 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:36:43,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:36:43,205 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:43,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:43,228 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:43,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:43,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060009582] [2021-03-24 22:36:43,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:43,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:43,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371415434] [2021-03-24 22:36:43,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:43,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:43,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:43,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:43,252 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:43,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 494 transitions, 16149 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:43,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:43,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:43,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:44,809 INFO L129 PetriNetUnfolder]: 704/5592 cut-off events. [2021-03-24 22:36:44,809 INFO L130 PetriNetUnfolder]: For 174901/180412 co-relation queries the response was YES. [2021-03-24 22:36:44,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39008 conditions, 5592 events. 704/5592 cut-off events. For 174901/180412 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 83705 event pairs, 452 based on Foata normal form. 46/5343 useless extension candidates. Maximal degree in co-relation 38882. Up to 1144 conditions per place. [2021-03-24 22:36:44,873 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 186 selfloop transitions, 307 changer transitions 1/508 dead transitions. [2021-03-24 22:36:44,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 508 transitions, 17363 flow [2021-03-24 22:36:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:44,874 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:44,874 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:44,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:44,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:44,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:44,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:44,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:44,883 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:44,883 INFO L185 Difference]: Start difference. First operand has 301 places, 494 transitions, 16149 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:44,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 508 transitions, 17363 flow [2021-03-24 22:36:45,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 508 transitions, 16662 flow, removed 18 selfloop flow, removed 9 redundant places. [2021-03-24 22:36:45,811 INFO L241 Difference]: Finished difference. Result has 300 places, 494 transitions, 16091 flow [2021-03-24 22:36:45,811 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15462, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16091, PETRI_PLACES=300, PETRI_TRANSITIONS=494} [2021-03-24 22:36:45,811 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 256 predicate places. [2021-03-24 22:36:45,812 INFO L480 AbstractCegarLoop]: Abstraction has has 300 places, 494 transitions, 16091 flow [2021-03-24 22:36:45,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:45,812 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:45,812 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] [2021-03-24 22:36:45,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-24 22:36:45,812 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:45,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:45,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1840660010, now seen corresponding path program 36 times [2021-03-24 22:36:45,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:45,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87084824] [2021-03-24 22:36:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:45,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:45,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:45,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:45,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:45,868 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:45,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:45,874 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:45,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:45,883 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:45,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:45,905 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:36:45,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:36:45,937 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:45,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:45,963 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:45,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:45,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87084824] [2021-03-24 22:36:45,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:45,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:45,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237911740] [2021-03-24 22:36:45,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:45,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:45,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:45,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:45,982 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:45,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 494 transitions, 16091 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:45,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:45,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:45,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:47,668 INFO L129 PetriNetUnfolder]: 704/5586 cut-off events. [2021-03-24 22:36:47,668 INFO L130 PetriNetUnfolder]: For 173568/179084 co-relation queries the response was YES. [2021-03-24 22:36:47,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38957 conditions, 5586 events. 704/5586 cut-off events. For 173568/179084 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 83652 event pairs, 452 based on Foata normal form. 48/5339 useless extension candidates. Maximal degree in co-relation 38833. Up to 1144 conditions per place. [2021-03-24 22:36:47,754 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 183 selfloop transitions, 309 changer transitions 1/507 dead transitions. [2021-03-24 22:36:47,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 507 transitions, 17263 flow [2021-03-24 22:36:47,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:47,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:47,755 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:47,755 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:47,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:47,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:47,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:47,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:47,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:47,757 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:47,757 INFO L185 Difference]: Start difference. First operand has 300 places, 494 transitions, 16091 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:47,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 507 transitions, 17263 flow [2021-03-24 22:36:48,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 507 transitions, 16646 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 22:36:48,750 INFO L241 Difference]: Finished difference. Result has 303 places, 495 transitions, 16168 flow [2021-03-24 22:36:48,750 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15484, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16168, PETRI_PLACES=303, PETRI_TRANSITIONS=495} [2021-03-24 22:36:48,750 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 259 predicate places. [2021-03-24 22:36:48,750 INFO L480 AbstractCegarLoop]: Abstraction has has 303 places, 495 transitions, 16168 flow [2021-03-24 22:36:48,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:48,750 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:48,750 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] [2021-03-24 22:36:48,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-24 22:36:48,750 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:48,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:48,751 INFO L82 PathProgramCache]: Analyzing trace with hash 353559026, now seen corresponding path program 37 times [2021-03-24 22:36:48,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:48,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405595298] [2021-03-24 22:36:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:48,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:48,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:48,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:48,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:48,808 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:48,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:48,816 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:48,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:48,825 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:48,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:48,847 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:36:48,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:36:48,882 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:36:48,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:36:48,921 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:48,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:48,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405595298] [2021-03-24 22:36:48,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:48,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:48,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298333676] [2021-03-24 22:36:48,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:48,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:48,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:48,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:48,960 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:48,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 495 transitions, 16168 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:48,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:48,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:48,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:50,500 INFO L129 PetriNetUnfolder]: 704/5580 cut-off events. [2021-03-24 22:36:50,500 INFO L130 PetriNetUnfolder]: For 174623/180139 co-relation queries the response was YES. [2021-03-24 22:36:50,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38968 conditions, 5580 events. 704/5580 cut-off events. For 174623/180139 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 83484 event pairs, 452 based on Foata normal form. 48/5333 useless extension candidates. Maximal degree in co-relation 38843. Up to 1144 conditions per place. [2021-03-24 22:36:50,550 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 182 selfloop transitions, 309 changer transitions 1/506 dead transitions. [2021-03-24 22:36:50,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 506 transitions, 17270 flow [2021-03-24 22:36:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:50,552 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:50,552 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:50,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:50,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:50,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:50,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:50,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:50,554 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:50,554 INFO L185 Difference]: Start difference. First operand has 303 places, 495 transitions, 16168 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:50,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 506 transitions, 17270 flow [2021-03-24 22:36:51,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 506 transitions, 16669 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-03-24 22:36:51,332 INFO L241 Difference]: Finished difference. Result has 304 places, 494 transitions, 16153 flow [2021-03-24 22:36:51,333 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15577, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16153, PETRI_PLACES=304, PETRI_TRANSITIONS=494} [2021-03-24 22:36:51,333 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 260 predicate places. [2021-03-24 22:36:51,333 INFO L480 AbstractCegarLoop]: Abstraction has has 304 places, 494 transitions, 16153 flow [2021-03-24 22:36:51,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:51,333 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:51,333 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] [2021-03-24 22:36:51,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-24 22:36:51,334 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:51,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:51,334 INFO L82 PathProgramCache]: Analyzing trace with hash 678155148, now seen corresponding path program 38 times [2021-03-24 22:36:51,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:51,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485885512] [2021-03-24 22:36:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:51,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:51,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:51,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:51,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:51,390 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:51,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:51,396 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:51,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:51,405 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:51,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:51,431 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:36:51,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:36:51,447 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:51,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:51,482 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:51,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:51,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485885512] [2021-03-24 22:36:51,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:51,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:51,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701558629] [2021-03-24 22:36:51,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:51,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:51,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:51,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:51,508 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:51,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 494 transitions, 16153 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:51,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:51,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:51,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:53,252 INFO L129 PetriNetUnfolder]: 704/5527 cut-off events. [2021-03-24 22:36:53,252 INFO L130 PetriNetUnfolder]: For 176077/180170 co-relation queries the response was YES. [2021-03-24 22:36:53,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38967 conditions, 5527 events. 704/5527 cut-off events. For 176077/180170 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 82567 event pairs, 536 based on Foata normal form. 48/5277 useless extension candidates. Maximal degree in co-relation 38844. Up to 1144 conditions per place. [2021-03-24 22:36:53,310 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 181 selfloop transitions, 308 changer transitions 2/505 dead transitions. [2021-03-24 22:36:53,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 505 transitions, 17253 flow [2021-03-24 22:36:53,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:53,311 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:53,311 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:53,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:53,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:53,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:53,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:53,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:53,312 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:53,312 INFO L185 Difference]: Start difference. First operand has 304 places, 494 transitions, 16153 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:53,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 505 transitions, 17253 flow [2021-03-24 22:36:54,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 505 transitions, 16621 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 22:36:54,213 INFO L241 Difference]: Finished difference. Result has 305 places, 492 transitions, 16068 flow [2021-03-24 22:36:54,214 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15531, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16068, PETRI_PLACES=305, PETRI_TRANSITIONS=492} [2021-03-24 22:36:54,214 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 261 predicate places. [2021-03-24 22:36:54,214 INFO L480 AbstractCegarLoop]: Abstraction has has 305 places, 492 transitions, 16068 flow [2021-03-24 22:36:54,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:54,215 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:54,215 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] [2021-03-24 22:36:54,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-24 22:36:54,215 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:54,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:54,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1043792262, now seen corresponding path program 39 times [2021-03-24 22:36:54,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:54,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963341732] [2021-03-24 22:36:54,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:54,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:54,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:54,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:54,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:54,277 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:54,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:54,283 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:54,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:54,294 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:54,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:54,314 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:36:54,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:36:54,339 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:54,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:54,375 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:54,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:54,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963341732] [2021-03-24 22:36:54,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:54,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:54,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832070111] [2021-03-24 22:36:54,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:54,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:54,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:54,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:54,399 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:54,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 492 transitions, 16068 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:54,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:54,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:54,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:56,176 INFO L129 PetriNetUnfolder]: 704/5570 cut-off events. [2021-03-24 22:36:56,177 INFO L130 PetriNetUnfolder]: For 173670/179186 co-relation queries the response was YES. [2021-03-24 22:36:56,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38996 conditions, 5570 events. 704/5570 cut-off events. For 173670/179186 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 83373 event pairs, 452 based on Foata normal form. 48/5324 useless extension candidates. Maximal degree in co-relation 38874. Up to 1144 conditions per place. [2021-03-24 22:36:56,237 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 183 selfloop transitions, 304 changer transitions 2/503 dead transitions. [2021-03-24 22:36:56,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 503 transitions, 17164 flow [2021-03-24 22:36:56,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:56,238 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:56,238 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:56,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:56,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:56,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:56,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:56,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:56,239 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:56,239 INFO L185 Difference]: Start difference. First operand has 305 places, 492 transitions, 16068 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:56,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 503 transitions, 17164 flow [2021-03-24 22:36:57,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 503 transitions, 16541 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 22:36:57,059 INFO L241 Difference]: Finished difference. Result has 306 places, 490 transitions, 15982 flow [2021-03-24 22:36:57,059 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15455, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15982, PETRI_PLACES=306, PETRI_TRANSITIONS=490} [2021-03-24 22:36:57,059 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 262 predicate places. [2021-03-24 22:36:57,059 INFO L480 AbstractCegarLoop]: Abstraction has has 306 places, 490 transitions, 15982 flow [2021-03-24 22:36:57,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:57,060 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:57,060 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:36:57,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-24 22:36:57,060 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:57,060 INFO L82 PathProgramCache]: Analyzing trace with hash 188519308, now seen corresponding path program 40 times [2021-03-24 22:36:57,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:57,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060798241] [2021-03-24 22:36:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:57,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:57,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:57,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:57,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:57,104 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:36:57,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:36:57,111 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 22:36:57,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 22:36:57,119 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:36:57,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:36:57,146 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:36:57,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:36:57,163 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:57,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:57,202 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:57,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:57,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060798241] [2021-03-24 22:36:57,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:57,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:57,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911989705] [2021-03-24 22:36:57,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:57,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:57,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:57,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:57,225 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:57,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 490 transitions, 15982 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:57,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:57,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:57,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:36:58,754 INFO L129 PetriNetUnfolder]: 704/5563 cut-off events. [2021-03-24 22:36:58,754 INFO L130 PetriNetUnfolder]: For 173167/178683 co-relation queries the response was YES. [2021-03-24 22:36:58,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38955 conditions, 5563 events. 704/5563 cut-off events. For 173167/178683 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 83134 event pairs, 452 based on Foata normal form. 48/5318 useless extension candidates. Maximal degree in co-relation 38834. Up to 1144 conditions per place. [2021-03-24 22:36:58,809 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 162 selfloop transitions, 322 changer transitions 3/501 dead transitions. [2021-03-24 22:36:58,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 501 transitions, 17074 flow [2021-03-24 22:36:58,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:36:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:36:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:36:58,811 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:36:58,811 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:36:58,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:36:58,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:36:58,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:36:58,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:58,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:58,814 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:58,814 INFO L185 Difference]: Start difference. First operand has 306 places, 490 transitions, 15982 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:36:58,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 501 transitions, 17074 flow [2021-03-24 22:36:59,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 501 transitions, 16451 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 22:36:59,598 INFO L241 Difference]: Finished difference. Result has 307 places, 487 transitions, 15887 flow [2021-03-24 22:36:59,598 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15369, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15887, PETRI_PLACES=307, PETRI_TRANSITIONS=487} [2021-03-24 22:36:59,598 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 263 predicate places. [2021-03-24 22:36:59,598 INFO L480 AbstractCegarLoop]: Abstraction has has 307 places, 487 transitions, 15887 flow [2021-03-24 22:36:59,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:59,598 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:36:59,598 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] [2021-03-24 22:36:59,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-24 22:36:59,599 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:36:59,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:36:59,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1916461202, now seen corresponding path program 41 times [2021-03-24 22:36:59,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:36:59,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957460737] [2021-03-24 22:36:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:36:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:36:59,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:59,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:36:59,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:59,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:36:59,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:59,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:36:59,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:36:59,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 22:36:59,660 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:36:59,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:36:59,672 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:36:59,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:36:59,721 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:36:59,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:36:59,744 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:36:59,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:36:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:36:59,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957460737] [2021-03-24 22:36:59,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:36:59,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:36:59,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899487010] [2021-03-24 22:36:59,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:36:59,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:36:59,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:36:59,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:36:59,783 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:36:59,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 487 transitions, 15887 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:36:59,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:36:59,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:36:59,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:37:01,659 INFO L129 PetriNetUnfolder]: 767/7381 cut-off events. [2021-03-24 22:37:01,660 INFO L130 PetriNetUnfolder]: For 231999/237491 co-relation queries the response was YES. [2021-03-24 22:37:01,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50287 conditions, 7381 events. 767/7381 cut-off events. For 231999/237491 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 119726 event pairs, 204 based on Foata normal form. 13/6983 useless extension candidates. Maximal degree in co-relation 50167. Up to 1958 conditions per place. [2021-03-24 22:37:01,737 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 584 selfloop transitions, 192 changer transitions 3/793 dead transitions. [2021-03-24 22:37:01,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 793 transitions, 27736 flow [2021-03-24 22:37:01,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:37:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:37:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:37:01,739 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:37:01,739 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:37:01,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:37:01,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:37:01,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:37:01,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:01,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:01,740 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:01,740 INFO L185 Difference]: Start difference. First operand has 307 places, 487 transitions, 15887 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:37:01,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 793 transitions, 27736 flow [2021-03-24 22:37:02,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 793 transitions, 26683 flow, removed 11 selfloop flow, removed 7 redundant places. [2021-03-24 22:37:02,976 INFO L241 Difference]: Finished difference. Result has 314 places, 576 transitions, 18750 flow [2021-03-24 22:37:02,976 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=15262, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18750, PETRI_PLACES=314, PETRI_TRANSITIONS=576} [2021-03-24 22:37:02,977 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 270 predicate places. [2021-03-24 22:37:02,977 INFO L480 AbstractCegarLoop]: Abstraction has has 314 places, 576 transitions, 18750 flow [2021-03-24 22:37:02,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:02,977 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:37:02,977 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] [2021-03-24 22:37:02,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-24 22:37:02,977 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:37:02,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:37:02,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1495848212, now seen corresponding path program 42 times [2021-03-24 22:37:02,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:37:02,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926274060] [2021-03-24 22:37:02,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:37:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:37:02,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:02,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:37:02,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:02,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:37:02,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:02,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:37:02,994 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:37:02,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:37:03,003 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:37:03,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:37:03,014 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:37:03,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:37:03,031 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:37:03,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:37:03,054 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:37:03,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:37:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:37:03,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926274060] [2021-03-24 22:37:03,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:37:03,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:37:03,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757298117] [2021-03-24 22:37:03,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:37:03,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:37:03,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:37:03,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:37:03,078 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:37:03,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 576 transitions, 18750 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:03,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:37:03,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:37:03,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:37:05,300 INFO L129 PetriNetUnfolder]: 764/7646 cut-off events. [2021-03-24 22:37:05,301 INFO L130 PetriNetUnfolder]: For 260855/269984 co-relation queries the response was YES. [2021-03-24 22:37:05,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53968 conditions, 7646 events. 764/7646 cut-off events. For 260855/269984 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 124382 event pairs, 410 based on Foata normal form. 30/7361 useless extension candidates. Maximal degree in co-relation 53843. Up to 1538 conditions per place. [2021-03-24 22:37:05,393 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 451 selfloop transitions, 262 changer transitions 2/729 dead transitions. [2021-03-24 22:37:05,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 729 transitions, 25251 flow [2021-03-24 22:37:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:37:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:37:05,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:37:05,395 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:37:05,395 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:37:05,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:37:05,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:37:05,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:37:05,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:05,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:05,396 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:05,396 INFO L185 Difference]: Start difference. First operand has 314 places, 576 transitions, 18750 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:37:05,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 729 transitions, 25251 flow [2021-03-24 22:37:06,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 729 transitions, 24913 flow, removed 106 selfloop flow, removed 2 redundant places. [2021-03-24 22:37:06,994 INFO L241 Difference]: Finished difference. Result has 325 places, 635 transitions, 21459 flow [2021-03-24 22:37:06,995 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=18462, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21459, PETRI_PLACES=325, PETRI_TRANSITIONS=635} [2021-03-24 22:37:06,995 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 281 predicate places. [2021-03-24 22:37:06,995 INFO L480 AbstractCegarLoop]: Abstraction has has 325 places, 635 transitions, 21459 flow [2021-03-24 22:37:06,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:06,995 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:37:06,995 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] [2021-03-24 22:37:06,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-24 22:37:06,995 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:37:06,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:37:06,996 INFO L82 PathProgramCache]: Analyzing trace with hash -217531006, now seen corresponding path program 43 times [2021-03-24 22:37:06,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:37:06,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970126432] [2021-03-24 22:37:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:37:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:37:07,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:07,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:37:07,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:07,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:37:07,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:07,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:37:07,015 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:37:07,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:37:07,024 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:37:07,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:37:07,045 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:37:07,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:37:07,077 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:37:07,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:37:07,101 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:37:07,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:37:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:37:07,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970126432] [2021-03-24 22:37:07,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:37:07,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:37:07,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125791145] [2021-03-24 22:37:07,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:37:07,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:37:07,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:37:07,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:37:07,125 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:37:07,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 635 transitions, 21459 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:07,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:37:07,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:37:07,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:37:09,832 INFO L129 PetriNetUnfolder]: 731/8678 cut-off events. [2021-03-24 22:37:09,833 INFO L130 PetriNetUnfolder]: For 306933/318099 co-relation queries the response was YES. [2021-03-24 22:37:09,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60845 conditions, 8678 events. 731/8678 cut-off events. For 306933/318099 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 147719 event pairs, 374 based on Foata normal form. 57/8264 useless extension candidates. Maximal degree in co-relation 60715. Up to 1720 conditions per place. [2021-03-24 22:37:09,943 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 571 selfloop transitions, 310 changer transitions 3/898 dead transitions. [2021-03-24 22:37:09,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 898 transitions, 32786 flow [2021-03-24 22:37:09,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:37:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:37:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:37:09,944 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:37:09,944 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:37:09,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:37:09,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:37:09,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:37:09,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:09,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:09,945 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:09,945 INFO L185 Difference]: Start difference. First operand has 325 places, 635 transitions, 21459 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:37:09,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 898 transitions, 32786 flow [2021-03-24 22:37:11,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 898 transitions, 32280 flow, removed 214 selfloop flow, removed 3 redundant places. [2021-03-24 22:37:11,961 INFO L241 Difference]: Finished difference. Result has 336 places, 726 transitions, 25636 flow [2021-03-24 22:37:11,961 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=21175, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25636, PETRI_PLACES=336, PETRI_TRANSITIONS=726} [2021-03-24 22:37:11,961 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 292 predicate places. [2021-03-24 22:37:11,962 INFO L480 AbstractCegarLoop]: Abstraction has has 336 places, 726 transitions, 25636 flow [2021-03-24 22:37:11,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:11,962 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:37:11,962 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] [2021-03-24 22:37:11,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-24 22:37:11,962 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:37:11,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:37:11,962 INFO L82 PathProgramCache]: Analyzing trace with hash -41679772, now seen corresponding path program 44 times [2021-03-24 22:37:11,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:37:11,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908399129] [2021-03-24 22:37:11,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:37:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:37:11,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:11,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:37:11,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:11,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:37:11,976 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:37:11,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:37:11,982 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:37:11,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:37:11,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:37:11,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:37:12,004 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:37:12,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:37:12,021 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:37:12,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:37:12,044 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:37:12,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:37:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:37:12,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908399129] [2021-03-24 22:37:12,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:37:12,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:37:12,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521284931] [2021-03-24 22:37:12,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:37:12,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:37:12,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:37:12,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:37:12,069 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:37:12,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 726 transitions, 25636 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:12,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:37:12,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:37:12,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:37:15,142 INFO L129 PetriNetUnfolder]: 687/8792 cut-off events. [2021-03-24 22:37:15,142 INFO L130 PetriNetUnfolder]: For 329734/340730 co-relation queries the response was YES. [2021-03-24 22:37:15,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63776 conditions, 8792 events. 687/8792 cut-off events. For 329734/340730 co-relation queries the response was YES. Maximal size of possible extension queue 1340. Compared 150252 event pairs, 589 based on Foata normal form. 49/8428 useless extension candidates. Maximal degree in co-relation 63641. Up to 1679 conditions per place. [2021-03-24 22:37:15,263 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 411 selfloop transitions, 418 changer transitions 1/844 dead transitions. [2021-03-24 22:37:15,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 844 transitions, 31549 flow [2021-03-24 22:37:15,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:37:15,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:37:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:37:15,265 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:37:15,265 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:37:15,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:37:15,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:37:15,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:37:15,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:15,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:15,266 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:15,266 INFO L185 Difference]: Start difference. First operand has 336 places, 726 transitions, 25636 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:37:15,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 844 transitions, 31549 flow [2021-03-24 22:37:17,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 844 transitions, 31006 flow, removed 173 selfloop flow, removed 4 redundant places. [2021-03-24 22:37:18,007 INFO L241 Difference]: Finished difference. Result has 345 places, 751 transitions, 27401 flow [2021-03-24 22:37:18,007 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=25187, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27401, PETRI_PLACES=345, PETRI_TRANSITIONS=751} [2021-03-24 22:37:18,007 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 301 predicate places. [2021-03-24 22:37:18,007 INFO L480 AbstractCegarLoop]: Abstraction has has 345 places, 751 transitions, 27401 flow [2021-03-24 22:37:18,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:18,007 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:37:18,008 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] [2021-03-24 22:37:18,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-24 22:37:18,008 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:37:18,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:37:18,008 INFO L82 PathProgramCache]: Analyzing trace with hash -2049714668, now seen corresponding path program 45 times [2021-03-24 22:37:18,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:37:18,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329904664] [2021-03-24 22:37:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:37:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:37:18,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:18,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:37:18,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:18,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:37:18,020 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:37:18,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:37:18,026 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:37:18,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:37:18,034 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:37:18,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:37:18,056 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:37:18,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:37:18,084 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:37:18,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:37:18,108 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:37:18,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:37:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:37:18,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329904664] [2021-03-24 22:37:18,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:37:18,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:37:18,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423495623] [2021-03-24 22:37:18,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:37:18,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:37:18,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:37:18,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:37:18,131 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:37:18,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 751 transitions, 27401 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:18,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:37:18,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:37:18,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:37:21,466 INFO L129 PetriNetUnfolder]: 636/9207 cut-off events. [2021-03-24 22:37:21,466 INFO L130 PetriNetUnfolder]: For 353061/366332 co-relation queries the response was YES. [2021-03-24 22:37:21,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67009 conditions, 9207 events. 636/9207 cut-off events. For 353061/366332 co-relation queries the response was YES. Maximal size of possible extension queue 1422. Compared 160372 event pairs, 626 based on Foata normal form. 63/8823 useless extension candidates. Maximal degree in co-relation 66870. Up to 1590 conditions per place. [2021-03-24 22:37:21,544 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 312 selfloop transitions, 486 changer transitions 2/814 dead transitions. [2021-03-24 22:37:21,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 814 transitions, 31051 flow [2021-03-24 22:37:21,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:37:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:37:21,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:37:21,545 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:37:21,545 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:37:21,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:37:21,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:37:21,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:37:21,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:21,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:21,546 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:21,546 INFO L185 Difference]: Start difference. First operand has 345 places, 751 transitions, 27401 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:37:21,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 814 transitions, 31051 flow [2021-03-24 22:37:23,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 814 transitions, 30420 flow, removed 113 selfloop flow, removed 3 redundant places. [2021-03-24 22:37:23,972 INFO L241 Difference]: Finished difference. Result has 354 places, 770 transitions, 28677 flow [2021-03-24 22:37:23,972 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=26832, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=467, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=28677, PETRI_PLACES=354, PETRI_TRANSITIONS=770} [2021-03-24 22:37:23,972 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 310 predicate places. [2021-03-24 22:37:23,972 INFO L480 AbstractCegarLoop]: Abstraction has has 354 places, 770 transitions, 28677 flow [2021-03-24 22:37:23,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:23,972 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:37:23,972 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:37:23,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-24 22:37:23,973 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:37:23,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:37:23,973 INFO L82 PathProgramCache]: Analyzing trace with hash -759143782, now seen corresponding path program 46 times [2021-03-24 22:37:23,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:37:23,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722195691] [2021-03-24 22:37:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:37:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:37:23,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:23,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:37:23,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:23,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:37:23,985 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:37:23,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:37:23,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:37:23,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:37:23,999 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:37:23,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:37:24,019 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:37:24,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:37:24,048 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:37:24,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:37:24,072 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:37:24,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:37:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:37:24,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722195691] [2021-03-24 22:37:24,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:37:24,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:37:24,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598645636] [2021-03-24 22:37:24,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:37:24,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:37:24,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:37:24,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:37:24,095 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:37:24,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 770 transitions, 28677 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:24,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:37:24,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:37:24,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:37:27,602 INFO L129 PetriNetUnfolder]: 633/9256 cut-off events. [2021-03-24 22:37:27,602 INFO L130 PetriNetUnfolder]: For 362647/375834 co-relation queries the response was YES. [2021-03-24 22:37:27,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68005 conditions, 9256 events. 633/9256 cut-off events. For 362647/375834 co-relation queries the response was YES. Maximal size of possible extension queue 1426. Compared 161503 event pairs, 563 based on Foata normal form. 81/8867 useless extension candidates. Maximal degree in co-relation 67862. Up to 1771 conditions per place. [2021-03-24 22:37:27,679 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 390 selfloop transitions, 498 changer transitions 2/904 dead transitions. [2021-03-24 22:37:27,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 904 transitions, 35678 flow [2021-03-24 22:37:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:37:27,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:37:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:37:27,680 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:37:27,680 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:37:27,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:37:27,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:37:27,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:37:27,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:27,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:27,681 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:27,681 INFO L185 Difference]: Start difference. First operand has 354 places, 770 transitions, 28677 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:37:27,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 904 transitions, 35678 flow [2021-03-24 22:37:30,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 904 transitions, 34822 flow, removed 41 selfloop flow, removed 5 redundant places. [2021-03-24 22:37:30,098 INFO L241 Difference]: Finished difference. Result has 362 places, 807 transitions, 31011 flow [2021-03-24 22:37:30,098 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=27861, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31011, PETRI_PLACES=362, PETRI_TRANSITIONS=807} [2021-03-24 22:37:30,098 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 318 predicate places. [2021-03-24 22:37:30,098 INFO L480 AbstractCegarLoop]: Abstraction has has 362 places, 807 transitions, 31011 flow [2021-03-24 22:37:30,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:30,098 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:37:30,098 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] [2021-03-24 22:37:30,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-24 22:37:30,099 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:37:30,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:37:30,099 INFO L82 PathProgramCache]: Analyzing trace with hash -2074043056, now seen corresponding path program 47 times [2021-03-24 22:37:30,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:37:30,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374780634] [2021-03-24 22:37:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:37:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:37:30,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:30,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:37:30,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:30,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:37:30,111 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:37:30,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:37:30,116 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:37:30,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:37:30,124 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:37:30,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:37:30,136 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:37:30,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:37:30,153 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:37:30,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:37:30,176 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:37:30,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:37:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:37:30,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374780634] [2021-03-24 22:37:30,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:37:30,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:37:30,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237297358] [2021-03-24 22:37:30,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:37:30,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:37:30,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:37:30,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:37:30,200 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:37:30,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 807 transitions, 31011 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:30,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:37:30,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:37:30,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:37:33,956 INFO L129 PetriNetUnfolder]: 581/9557 cut-off events. [2021-03-24 22:37:33,957 INFO L130 PetriNetUnfolder]: For 391062/404380 co-relation queries the response was YES. [2021-03-24 22:37:34,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71256 conditions, 9557 events. 581/9557 cut-off events. For 391062/404380 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 168963 event pairs, 547 based on Foata normal form. 66/9147 useless extension candidates. Maximal degree in co-relation 71109. Up to 1737 conditions per place. [2021-03-24 22:37:34,039 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 459 selfloop transitions, 445 changer transitions 2/920 dead transitions. [2021-03-24 22:37:34,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 920 transitions, 37132 flow [2021-03-24 22:37:34,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:37:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:37:34,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:37:34,040 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:37:34,040 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:37:34,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:37:34,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:37:34,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:37:34,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:34,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:34,042 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:34,042 INFO L185 Difference]: Start difference. First operand has 362 places, 807 transitions, 31011 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:37:34,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 920 transitions, 37132 flow [2021-03-24 22:37:37,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 920 transitions, 36443 flow, removed 142 selfloop flow, removed 3 redundant places. [2021-03-24 22:37:37,040 INFO L241 Difference]: Finished difference. Result has 371 places, 836 transitions, 32636 flow [2021-03-24 22:37:37,041 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=30352, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=416, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32636, PETRI_PLACES=371, PETRI_TRANSITIONS=836} [2021-03-24 22:37:37,041 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 327 predicate places. [2021-03-24 22:37:37,041 INFO L480 AbstractCegarLoop]: Abstraction has has 371 places, 836 transitions, 32636 flow [2021-03-24 22:37:37,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:37,041 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:37:37,041 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] [2021-03-24 22:37:37,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-24 22:37:37,042 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:37:37,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:37:37,042 INFO L82 PathProgramCache]: Analyzing trace with hash 678417136, now seen corresponding path program 48 times [2021-03-24 22:37:37,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:37:37,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76881538] [2021-03-24 22:37:37,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:37:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:37:37,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:37,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:37:37,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:37,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:37:37,054 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:37:37,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:37:37,060 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:37:37,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:37:37,068 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:37:37,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:37:37,080 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:37:37,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:37:37,096 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:37:37,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:37:37,120 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:37:37,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:37:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:37:37,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76881538] [2021-03-24 22:37:37,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:37:37,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:37:37,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590156608] [2021-03-24 22:37:37,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:37:37,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:37:37,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:37:37,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:37:37,144 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:37:37,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 836 transitions, 32636 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:37,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:37:37,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:37:37,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:37:41,221 INFO L129 PetriNetUnfolder]: 547/9861 cut-off events. [2021-03-24 22:37:41,221 INFO L130 PetriNetUnfolder]: For 410426/423751 co-relation queries the response was YES. [2021-03-24 22:37:41,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73749 conditions, 9861 events. 547/9861 cut-off events. For 410426/423751 co-relation queries the response was YES. Maximal size of possible extension queue 1553. Compared 176043 event pairs, 547 based on Foata normal form. 66/9412 useless extension candidates. Maximal degree in co-relation 73598. Up to 1687 conditions per place. [2021-03-24 22:37:41,306 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 394 selfloop transitions, 503 changer transitions 3/914 dead transitions. [2021-03-24 22:37:41,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 914 transitions, 37156 flow [2021-03-24 22:37:41,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:37:41,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:37:41,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:37:41,307 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:37:41,307 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:37:41,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:37:41,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:37:41,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:37:41,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:41,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:41,309 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:41,309 INFO L185 Difference]: Start difference. First operand has 371 places, 836 transitions, 32636 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:37:41,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 914 transitions, 37156 flow [2021-03-24 22:37:44,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 914 transitions, 36625 flow, removed 61 selfloop flow, removed 4 redundant places. [2021-03-24 22:37:44,457 INFO L241 Difference]: Finished difference. Result has 379 places, 864 transitions, 34416 flow [2021-03-24 22:37:44,457 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=32123, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=475, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34416, PETRI_PLACES=379, PETRI_TRANSITIONS=864} [2021-03-24 22:37:44,458 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 335 predicate places. [2021-03-24 22:37:44,458 INFO L480 AbstractCegarLoop]: Abstraction has has 379 places, 864 transitions, 34416 flow [2021-03-24 22:37:44,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:44,458 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:37:44,458 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] [2021-03-24 22:37:44,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-24 22:37:44,458 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:37:44,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:37:44,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1892064860, now seen corresponding path program 49 times [2021-03-24 22:37:44,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:37:44,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826698917] [2021-03-24 22:37:44,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:37:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:37:44,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:44,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:37:44,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:44,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:37:44,471 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:37:44,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:37:44,476 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:37:44,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:37:44,484 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:37:44,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:37:44,496 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:37:44,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:37:44,512 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:37:44,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:37:44,535 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:37:44,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:37:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:37:44,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826698917] [2021-03-24 22:37:44,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:37:44,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:37:44,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276265140] [2021-03-24 22:37:44,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:37:44,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:37:44,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:37:44,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:37:44,559 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:37:44,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 864 transitions, 34416 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:44,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:37:44,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:37:44,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:37:48,694 INFO L129 PetriNetUnfolder]: 547/9870 cut-off events. [2021-03-24 22:37:48,694 INFO L130 PetriNetUnfolder]: For 425794/439125 co-relation queries the response was YES. [2021-03-24 22:37:48,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74884 conditions, 9870 events. 547/9870 cut-off events. For 425794/439125 co-relation queries the response was YES. Maximal size of possible extension queue 1551. Compared 176352 event pairs, 523 based on Foata normal form. 84/9454 useless extension candidates. Maximal degree in co-relation 74730. Up to 1828 conditions per place. [2021-03-24 22:37:48,909 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 429 selfloop transitions, 539 changer transitions 1/983 dead transitions. [2021-03-24 22:37:48,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 983 transitions, 41062 flow [2021-03-24 22:37:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:37:48,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:37:48,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:37:48,910 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:37:48,910 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:37:48,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:37:48,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:37:48,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:37:48,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:48,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:48,911 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:48,911 INFO L185 Difference]: Start difference. First operand has 379 places, 864 transitions, 34416 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:37:48,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 983 transitions, 41062 flow [2021-03-24 22:37:52,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 983 transitions, 40567 flow, removed 40 selfloop flow, removed 5 redundant places. [2021-03-24 22:37:52,219 INFO L241 Difference]: Finished difference. Result has 386 places, 893 transitions, 36583 flow [2021-03-24 22:37:52,220 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=33935, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=864, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36583, PETRI_PLACES=386, PETRI_TRANSITIONS=893} [2021-03-24 22:37:52,220 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 342 predicate places. [2021-03-24 22:37:52,220 INFO L480 AbstractCegarLoop]: Abstraction has has 386 places, 893 transitions, 36583 flow [2021-03-24 22:37:52,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:52,220 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:37:52,220 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] [2021-03-24 22:37:52,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-24 22:37:52,221 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:37:52,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:37:52,221 INFO L82 PathProgramCache]: Analyzing trace with hash 468623204, now seen corresponding path program 50 times [2021-03-24 22:37:52,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:37:52,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135793310] [2021-03-24 22:37:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:37:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:37:52,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:52,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:37:52,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:37:52,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:37:52,233 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:37:52,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:37:52,239 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:37:52,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:37:52,247 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:37:52,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:37:52,259 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:37:52,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:37:52,276 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:37:52,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:37:52,300 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:37:52,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:37:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:37:52,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135793310] [2021-03-24 22:37:52,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:37:52,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:37:52,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329103465] [2021-03-24 22:37:52,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:37:52,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:37:52,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:37:52,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:37:52,324 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:37:52,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 893 transitions, 36583 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:52,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:37:52,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:37:52,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:37:56,541 INFO L129 PetriNetUnfolder]: 547/9863 cut-off events. [2021-03-24 22:37:56,542 INFO L130 PetriNetUnfolder]: For 444311/457625 co-relation queries the response was YES. [2021-03-24 22:37:56,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76192 conditions, 9863 events. 547/9863 cut-off events. For 444311/457625 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 176154 event pairs, 523 based on Foata normal form. 84/9453 useless extension candidates. Maximal degree in co-relation 76036. Up to 1828 conditions per place. [2021-03-24 22:37:56,627 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 396 selfloop transitions, 542 changer transitions 1/953 dead transitions. [2021-03-24 22:37:56,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 953 transitions, 40695 flow [2021-03-24 22:37:56,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:37:56,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:37:56,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:37:56,628 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:37:56,628 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:37:56,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:37:56,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:37:56,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:37:56,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:56,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:56,629 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:37:56,629 INFO L185 Difference]: Start difference. First operand has 386 places, 893 transitions, 36583 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:37:56,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 953 transitions, 40695 flow [2021-03-24 22:38:00,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 953 transitions, 39791 flow, removed 55 selfloop flow, removed 4 redundant places. [2021-03-24 22:38:00,180 INFO L241 Difference]: Finished difference. Result has 392 places, 944 transitions, 39198 flow [2021-03-24 22:38:00,181 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=35695, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=490, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39198, PETRI_PLACES=392, PETRI_TRANSITIONS=944} [2021-03-24 22:38:00,181 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 348 predicate places. [2021-03-24 22:38:00,181 INFO L480 AbstractCegarLoop]: Abstraction has has 392 places, 944 transitions, 39198 flow [2021-03-24 22:38:00,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:00,181 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:38:00,181 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] [2021-03-24 22:38:00,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-24 22:38:00,181 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:38:00,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:38:00,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1052512950, now seen corresponding path program 51 times [2021-03-24 22:38:00,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:38:00,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124286404] [2021-03-24 22:38:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:38:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:38:00,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:00,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:38:00,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:00,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:38:00,194 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:38:00,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:38:00,199 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:38:00,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:38:00,207 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:38:00,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:38:00,220 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:38:00,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:38:00,238 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:38:00,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:38:00,262 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:38:00,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:38:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:38:00,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124286404] [2021-03-24 22:38:00,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:38:00,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:38:00,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677088653] [2021-03-24 22:38:00,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:38:00,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:38:00,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:38:00,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:38:00,285 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:38:00,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 944 transitions, 39198 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:00,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:38:00,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:38:00,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:38:04,753 INFO L129 PetriNetUnfolder]: 547/9859 cut-off events. [2021-03-24 22:38:04,753 INFO L130 PetriNetUnfolder]: For 453472/466786 co-relation queries the response was YES. [2021-03-24 22:38:04,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76854 conditions, 9859 events. 547/9859 cut-off events. For 453472/466786 co-relation queries the response was YES. Maximal size of possible extension queue 1549. Compared 176133 event pairs, 523 based on Foata normal form. 84/9449 useless extension candidates. Maximal degree in co-relation 76696. Up to 1828 conditions per place. [2021-03-24 22:38:04,968 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 393 selfloop transitions, 543 changer transitions 2/952 dead transitions. [2021-03-24 22:38:04,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 952 transitions, 41197 flow [2021-03-24 22:38:04,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:38:04,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:38:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:38:04,969 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:38:04,969 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:38:04,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:38:04,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:38:04,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:38:04,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:04,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:04,971 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:04,971 INFO L185 Difference]: Start difference. First operand has 392 places, 944 transitions, 39198 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:38:04,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 952 transitions, 41197 flow [2021-03-24 22:38:08,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 952 transitions, 40301 flow, removed 51 selfloop flow, removed 4 redundant places. [2021-03-24 22:38:08,457 INFO L241 Difference]: Finished difference. Result has 396 places, 942 transitions, 39300 flow [2021-03-24 22:38:08,458 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=38312, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=543, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39300, PETRI_PLACES=396, PETRI_TRANSITIONS=942} [2021-03-24 22:38:08,458 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 352 predicate places. [2021-03-24 22:38:08,458 INFO L480 AbstractCegarLoop]: Abstraction has has 396 places, 942 transitions, 39300 flow [2021-03-24 22:38:08,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:08,458 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:38:08,458 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] [2021-03-24 22:38:08,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-24 22:38:08,458 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:38:08,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:38:08,458 INFO L82 PathProgramCache]: Analyzing trace with hash 846540994, now seen corresponding path program 52 times [2021-03-24 22:38:08,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:38:08,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496366324] [2021-03-24 22:38:08,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:38:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:38:08,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:08,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:38:08,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:08,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:38:08,470 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:38:08,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:38:08,476 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:38:08,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:38:08,484 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:38:08,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:38:08,497 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:38:08,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:38:08,514 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:38:08,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:38:08,537 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:38:08,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:38:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:38:08,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496366324] [2021-03-24 22:38:08,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:38:08,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:38:08,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459117711] [2021-03-24 22:38:08,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:38:08,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:38:08,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:38:08,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:38:08,561 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:38:08,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 942 transitions, 39300 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:08,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:38:08,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:38:08,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:38:13,013 INFO L129 PetriNetUnfolder]: 547/9853 cut-off events. [2021-03-24 22:38:13,013 INFO L130 PetriNetUnfolder]: For 451081/464395 co-relation queries the response was YES. [2021-03-24 22:38:13,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77183 conditions, 9853 events. 547/9853 cut-off events. For 451081/464395 co-relation queries the response was YES. Maximal size of possible extension queue 1548. Compared 175989 event pairs, 523 based on Foata normal form. 84/9444 useless extension candidates. Maximal degree in co-relation 77025. Up to 1828 conditions per place. [2021-03-24 22:38:13,099 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 393 selfloop transitions, 542 changer transitions 1/950 dead transitions. [2021-03-24 22:38:13,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 950 transitions, 41295 flow [2021-03-24 22:38:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:38:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:38:13,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:38:13,100 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:38:13,100 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:38:13,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:38:13,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:38:13,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:38:13,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:13,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:13,101 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:13,101 INFO L185 Difference]: Start difference. First operand has 396 places, 942 transitions, 39300 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:38:13,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 950 transitions, 41295 flow [2021-03-24 22:38:16,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 950 transitions, 40202 flow, removed 56 selfloop flow, removed 5 redundant places. [2021-03-24 22:38:16,682 INFO L241 Difference]: Finished difference. Result has 399 places, 941 transitions, 39247 flow [2021-03-24 22:38:16,682 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=38217, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39247, PETRI_PLACES=399, PETRI_TRANSITIONS=941} [2021-03-24 22:38:16,682 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 355 predicate places. [2021-03-24 22:38:16,682 INFO L480 AbstractCegarLoop]: Abstraction has has 399 places, 941 transitions, 39247 flow [2021-03-24 22:38:16,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:16,683 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:38:16,683 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] [2021-03-24 22:38:16,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-24 22:38:16,683 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:38:16,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:38:16,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1924882556, now seen corresponding path program 53 times [2021-03-24 22:38:16,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:38:16,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757368180] [2021-03-24 22:38:16,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:38:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:38:16,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:16,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:38:16,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:16,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:38:16,695 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:38:16,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:38:16,701 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:38:16,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:38:16,709 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:38:16,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:38:16,730 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:38:16,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:38:16,759 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:38:16,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:38:16,784 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:38:16,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:38:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:38:16,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757368180] [2021-03-24 22:38:16,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:38:16,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:38:16,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801852913] [2021-03-24 22:38:16,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:38:16,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:38:16,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:38:16,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:38:16,808 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:38:16,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 941 transitions, 39247 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:16,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:38:16,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:38:16,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:38:21,449 INFO L129 PetriNetUnfolder]: 547/9848 cut-off events. [2021-03-24 22:38:21,449 INFO L130 PetriNetUnfolder]: For 449094/462408 co-relation queries the response was YES. [2021-03-24 22:38:21,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77212 conditions, 9848 events. 547/9848 cut-off events. For 449094/462408 co-relation queries the response was YES. Maximal size of possible extension queue 1547. Compared 175824 event pairs, 523 based on Foata normal form. 84/9440 useless extension candidates. Maximal degree in co-relation 77054. Up to 1828 conditions per place. [2021-03-24 22:38:21,565 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 421 selfloop transitions, 535 changer transitions 2/972 dead transitions. [2021-03-24 22:38:21,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 972 transitions, 42414 flow [2021-03-24 22:38:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:38:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:38:21,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:38:21,567 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:38:21,567 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:38:21,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:38:21,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:38:21,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:38:21,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:21,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:21,568 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:21,568 INFO L185 Difference]: Start difference. First operand has 399 places, 941 transitions, 39247 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:38:21,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 972 transitions, 42414 flow [2021-03-24 22:38:25,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 972 transitions, 41608 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 22:38:25,225 INFO L241 Difference]: Finished difference. Result has 404 places, 945 transitions, 39759 flow [2021-03-24 22:38:25,226 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=38451, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=530, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39759, PETRI_PLACES=404, PETRI_TRANSITIONS=945} [2021-03-24 22:38:25,226 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 360 predicate places. [2021-03-24 22:38:25,226 INFO L480 AbstractCegarLoop]: Abstraction has has 404 places, 945 transitions, 39759 flow [2021-03-24 22:38:25,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:25,226 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:38:25,226 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] [2021-03-24 22:38:25,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-24 22:38:25,226 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:38:25,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:38:25,227 INFO L82 PathProgramCache]: Analyzing trace with hash 935046624, now seen corresponding path program 54 times [2021-03-24 22:38:25,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:38:25,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203655007] [2021-03-24 22:38:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:38:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:38:25,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:25,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:38:25,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:25,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:38:25,242 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:38:25,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:38:25,248 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:38:25,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:38:25,256 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:38:25,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:38:25,277 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:38:25,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:38:25,297 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:38:25,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:38:25,322 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:38:25,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:38:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:38:25,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203655007] [2021-03-24 22:38:25,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:38:25,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:38:25,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211508122] [2021-03-24 22:38:25,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:38:25,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:38:25,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:38:25,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:38:25,345 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:38:25,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 945 transitions, 39759 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:25,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:38:25,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:38:25,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:38:29,906 INFO L129 PetriNetUnfolder]: 547/9840 cut-off events. [2021-03-24 22:38:29,907 INFO L130 PetriNetUnfolder]: For 451003/464317 co-relation queries the response was YES. [2021-03-24 22:38:29,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77746 conditions, 9840 events. 547/9840 cut-off events. For 451003/464317 co-relation queries the response was YES. Maximal size of possible extension queue 1545. Compared 175674 event pairs, 523 based on Foata normal form. 84/9432 useless extension candidates. Maximal degree in co-relation 77587. Up to 1828 conditions per place. [2021-03-24 22:38:30,003 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 417 selfloop transitions, 538 changer transitions 1/970 dead transitions. [2021-03-24 22:38:30,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 970 transitions, 42633 flow [2021-03-24 22:38:30,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:38:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:38:30,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:38:30,004 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:38:30,004 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:38:30,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:38:30,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:38:30,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:38:30,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:30,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:30,005 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:30,005 INFO L185 Difference]: Start difference. First operand has 404 places, 945 transitions, 39759 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:38:30,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 970 transitions, 42633 flow [2021-03-24 22:38:33,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 970 transitions, 41573 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-24 22:38:33,814 INFO L241 Difference]: Finished difference. Result has 407 places, 961 transitions, 40682 flow [2021-03-24 22:38:33,814 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=38709, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=521, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40682, PETRI_PLACES=407, PETRI_TRANSITIONS=961} [2021-03-24 22:38:33,814 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 363 predicate places. [2021-03-24 22:38:33,815 INFO L480 AbstractCegarLoop]: Abstraction has has 407 places, 961 transitions, 40682 flow [2021-03-24 22:38:33,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:33,815 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:38:33,815 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] [2021-03-24 22:38:33,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-24 22:38:33,815 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:38:33,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:38:33,815 INFO L82 PathProgramCache]: Analyzing trace with hash -69232374, now seen corresponding path program 55 times [2021-03-24 22:38:33,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:38:33,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780414540] [2021-03-24 22:38:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:38:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:38:33,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:33,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:38:33,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:33,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:38:33,828 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:38:33,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:38:33,834 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:38:33,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:38:33,843 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:38:33,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:38:33,856 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:38:33,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:38:33,874 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:38:33,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:38:33,898 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:38:33,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:38:33,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:38:33,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780414540] [2021-03-24 22:38:33,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:38:33,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:38:33,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444007396] [2021-03-24 22:38:33,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:38:33,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:38:33,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:38:33,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:38:33,922 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:38:33,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 961 transitions, 40682 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:33,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:38:33,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:38:33,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:38:38,431 INFO L129 PetriNetUnfolder]: 547/9837 cut-off events. [2021-03-24 22:38:38,431 INFO L130 PetriNetUnfolder]: For 453649/466958 co-relation queries the response was YES. [2021-03-24 22:38:38,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77810 conditions, 9837 events. 547/9837 cut-off events. For 453649/466958 co-relation queries the response was YES. Maximal size of possible extension queue 1544. Compared 175636 event pairs, 523 based on Foata normal form. 82/9427 useless extension candidates. Maximal degree in co-relation 77650. Up to 1828 conditions per place. [2021-03-24 22:38:38,517 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 393 selfloop transitions, 561 changer transitions 1/969 dead transitions. [2021-03-24 22:38:38,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 969 transitions, 42715 flow [2021-03-24 22:38:38,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:38:38,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:38:38,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:38:38,518 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:38:38,518 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:38:38,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:38:38,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:38:38,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:38:38,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:38,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:38,519 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:38,519 INFO L185 Difference]: Start difference. First operand has 407 places, 961 transitions, 40682 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:38:38,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 969 transitions, 42715 flow [2021-03-24 22:38:42,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 969 transitions, 41706 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-03-24 22:38:42,196 INFO L241 Difference]: Finished difference. Result has 410 places, 960 transitions, 40753 flow [2021-03-24 22:38:42,197 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39683, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=561, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40753, PETRI_PLACES=410, PETRI_TRANSITIONS=960} [2021-03-24 22:38:42,197 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 366 predicate places. [2021-03-24 22:38:42,197 INFO L480 AbstractCegarLoop]: Abstraction has has 410 places, 960 transitions, 40753 flow [2021-03-24 22:38:42,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:42,197 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:38:42,197 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] [2021-03-24 22:38:42,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-24 22:38:42,197 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:38:42,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:38:42,197 INFO L82 PathProgramCache]: Analyzing trace with hash -551361924, now seen corresponding path program 56 times [2021-03-24 22:38:42,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:38:42,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341473040] [2021-03-24 22:38:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:38:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:38:42,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:42,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:38:42,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:42,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:38:42,251 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:38:42,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:38:42,257 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:38:42,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:38:42,267 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:38:42,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:38:42,280 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:38:42,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:38:42,297 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:38:42,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:38:42,319 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:38:42,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:38:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:38:42,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341473040] [2021-03-24 22:38:42,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:38:42,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:38:42,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201726172] [2021-03-24 22:38:42,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:38:42,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:38:42,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:38:42,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:38:42,340 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:38:42,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 960 transitions, 40753 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:42,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:38:42,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:38:42,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:38:46,698 INFO L129 PetriNetUnfolder]: 547/9832 cut-off events. [2021-03-24 22:38:46,698 INFO L130 PetriNetUnfolder]: For 453463/466772 co-relation queries the response was YES. [2021-03-24 22:38:46,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77930 conditions, 9832 events. 547/9832 cut-off events. For 453463/466772 co-relation queries the response was YES. Maximal size of possible extension queue 1543. Compared 175499 event pairs, 523 based on Foata normal form. 82/9423 useless extension candidates. Maximal degree in co-relation 77770. Up to 1828 conditions per place. [2021-03-24 22:38:46,793 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 392 selfloop transitions, 561 changer transitions 1/968 dead transitions. [2021-03-24 22:38:46,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 968 transitions, 42784 flow [2021-03-24 22:38:46,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:38:46,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:38:46,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:38:46,794 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:38:46,794 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:38:46,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:38:46,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:38:46,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:38:46,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:46,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:46,795 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:46,795 INFO L185 Difference]: Start difference. First operand has 410 places, 960 transitions, 40753 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:38:46,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 968 transitions, 42784 flow [2021-03-24 22:38:50,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 968 transitions, 41673 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 22:38:50,654 INFO L241 Difference]: Finished difference. Result has 412 places, 959 transitions, 40717 flow [2021-03-24 22:38:50,655 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39652, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=561, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40717, PETRI_PLACES=412, PETRI_TRANSITIONS=959} [2021-03-24 22:38:50,655 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 368 predicate places. [2021-03-24 22:38:50,655 INFO L480 AbstractCegarLoop]: Abstraction has has 412 places, 959 transitions, 40717 flow [2021-03-24 22:38:50,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:50,655 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:38:50,655 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] [2021-03-24 22:38:50,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-24 22:38:50,655 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:38:50,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:38:50,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1169664100, now seen corresponding path program 57 times [2021-03-24 22:38:50,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:38:50,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280573284] [2021-03-24 22:38:50,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:38:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:38:50,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:50,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:38:50,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:50,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:38:50,669 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:38:50,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:38:50,674 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:38:50,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:38:50,683 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-24 22:38:50,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 22:38:50,696 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:38:50,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:38:50,714 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:38:50,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:38:50,739 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:38:50,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:38:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:38:50,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280573284] [2021-03-24 22:38:50,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:38:50,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:38:50,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031346949] [2021-03-24 22:38:50,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:38:50,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:38:50,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:38:50,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:38:50,761 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:38:50,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 959 transitions, 40717 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:50,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:38:50,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:38:50,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:38:55,262 INFO L129 PetriNetUnfolder]: 547/9828 cut-off events. [2021-03-24 22:38:55,262 INFO L130 PetriNetUnfolder]: For 453259/466573 co-relation queries the response was YES. [2021-03-24 22:38:55,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77928 conditions, 9828 events. 547/9828 cut-off events. For 453259/466573 co-relation queries the response was YES. Maximal size of possible extension queue 1542. Compared 175420 event pairs, 523 based on Foata normal form. 84/9422 useless extension candidates. Maximal degree in co-relation 77768. Up to 1828 conditions per place. [2021-03-24 22:38:55,350 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 391 selfloop transitions, 559 changer transitions 3/967 dead transitions. [2021-03-24 22:38:55,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 967 transitions, 42746 flow [2021-03-24 22:38:55,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:38:55,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:38:55,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:38:55,351 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:38:55,351 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:38:55,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:38:55,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:38:55,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:38:55,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:55,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:55,352 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:55,352 INFO L185 Difference]: Start difference. First operand has 412 places, 959 transitions, 40717 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:38:55,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 967 transitions, 42746 flow [2021-03-24 22:38:59,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 967 transitions, 41947 flow, removed 33 selfloop flow, removed 5 redundant places. [2021-03-24 22:38:59,166 INFO L241 Difference]: Finished difference. Result has 415 places, 956 transitions, 40886 flow [2021-03-24 22:38:59,167 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39928, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=559, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40886, PETRI_PLACES=415, PETRI_TRANSITIONS=956} [2021-03-24 22:38:59,167 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 371 predicate places. [2021-03-24 22:38:59,167 INFO L480 AbstractCegarLoop]: Abstraction has has 415 places, 956 transitions, 40886 flow [2021-03-24 22:38:59,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:59,167 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:38:59,167 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] [2021-03-24 22:38:59,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-24 22:38:59,168 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:38:59,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:38:59,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1059679832, now seen corresponding path program 58 times [2021-03-24 22:38:59,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:38:59,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961476156] [2021-03-24 22:38:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:38:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:38:59,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:59,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:38:59,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:38:59,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:38:59,180 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:38:59,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:38:59,186 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:38:59,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:38:59,194 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:38:59,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:38:59,207 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:38:59,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:38:59,224 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:38:59,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:38:59,250 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:38:59,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:38:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:38:59,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961476156] [2021-03-24 22:38:59,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:38:59,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:38:59,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692062579] [2021-03-24 22:38:59,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:38:59,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:38:59,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:38:59,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:38:59,316 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:38:59,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 956 transitions, 40886 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:38:59,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:38:59,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:38:59,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:39:03,573 INFO L129 PetriNetUnfolder]: 547/9811 cut-off events. [2021-03-24 22:39:03,573 INFO L130 PetriNetUnfolder]: For 453099/466413 co-relation queries the response was YES. [2021-03-24 22:39:03,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78063 conditions, 9811 events. 547/9811 cut-off events. For 453099/466413 co-relation queries the response was YES. Maximal size of possible extension queue 1540. Compared 175047 event pairs, 523 based on Foata normal form. 84/9407 useless extension candidates. Maximal degree in co-relation 77904. Up to 1828 conditions per place. [2021-03-24 22:39:03,668 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 436 selfloop transitions, 536 changer transitions 2/988 dead transitions. [2021-03-24 22:39:03,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 988 transitions, 44130 flow [2021-03-24 22:39:03,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:39:03,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:39:03,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:39:03,669 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:39:03,669 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:39:03,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:39:03,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:39:03,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:39:03,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:03,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:03,671 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:03,671 INFO L185 Difference]: Start difference. First operand has 415 places, 956 transitions, 40886 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:39:03,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 988 transitions, 44130 flow [2021-03-24 22:39:07,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 988 transitions, 43101 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 22:39:07,329 INFO L241 Difference]: Finished difference. Result has 420 places, 973 transitions, 41957 flow [2021-03-24 22:39:07,330 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=39882, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=956, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=518, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41957, PETRI_PLACES=420, PETRI_TRANSITIONS=973} [2021-03-24 22:39:07,330 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 376 predicate places. [2021-03-24 22:39:07,330 INFO L480 AbstractCegarLoop]: Abstraction has has 420 places, 973 transitions, 41957 flow [2021-03-24 22:39:07,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:07,330 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:39:07,330 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] [2021-03-24 22:39:07,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-24 22:39:07,330 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:39:07,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:39:07,330 INFO L82 PathProgramCache]: Analyzing trace with hash -160216324, now seen corresponding path program 59 times [2021-03-24 22:39:07,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:39:07,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330458664] [2021-03-24 22:39:07,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:39:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:39:07,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:39:07,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:39:07,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:39:07,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:39:07,341 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:39:07,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:39:07,347 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:39:07,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:39:07,355 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:39:07,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:39:07,367 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:39:07,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:39:07,384 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:39:07,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:39:07,408 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:39:07,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:39:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:39:07,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330458664] [2021-03-24 22:39:07,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:39:07,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:39:07,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964740714] [2021-03-24 22:39:07,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:39:07,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:39:07,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:39:07,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:39:07,432 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:39:07,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 973 transitions, 41957 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:07,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:39:07,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:39:07,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:39:11,843 INFO L129 PetriNetUnfolder]: 547/9805 cut-off events. [2021-03-24 22:39:11,843 INFO L130 PetriNetUnfolder]: For 456225/469539 co-relation queries the response was YES. [2021-03-24 22:39:11,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78228 conditions, 9805 events. 547/9805 cut-off events. For 456225/469539 co-relation queries the response was YES. Maximal size of possible extension queue 1539. Compared 174900 event pairs, 523 based on Foata normal form. 84/9402 useless extension candidates. Maximal degree in co-relation 78067. Up to 1828 conditions per place. [2021-03-24 22:39:11,939 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 436 selfloop transitions, 534 changer transitions 2/986 dead transitions. [2021-03-24 22:39:11,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 986 transitions, 44216 flow [2021-03-24 22:39:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:39:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:39:11,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:39:11,940 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:39:11,940 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:39:11,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:39:11,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:39:11,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:39:11,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:11,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:11,942 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:11,942 INFO L185 Difference]: Start difference. First operand has 420 places, 973 transitions, 41957 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:39:11,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 986 transitions, 44216 flow [2021-03-24 22:39:15,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 986 transitions, 43194 flow, removed 25 selfloop flow, removed 5 redundant places. [2021-03-24 22:39:15,785 INFO L241 Difference]: Finished difference. Result has 423 places, 971 transitions, 41904 flow [2021-03-24 22:39:15,785 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40945, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=973, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=534, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41904, PETRI_PLACES=423, PETRI_TRANSITIONS=971} [2021-03-24 22:39:15,785 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 379 predicate places. [2021-03-24 22:39:15,786 INFO L480 AbstractCegarLoop]: Abstraction has has 423 places, 971 transitions, 41904 flow [2021-03-24 22:39:15,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:15,786 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:39:15,786 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] [2021-03-24 22:39:15,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-24 22:39:15,786 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:39:15,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:39:15,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1346889104, now seen corresponding path program 60 times [2021-03-24 22:39:15,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:39:15,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694795523] [2021-03-24 22:39:15,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:39:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:39:15,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:39:15,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:39:15,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:39:15,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:39:15,799 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:39:15,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:39:15,805 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:39:15,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:39:15,813 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:39:15,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:39:15,833 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:39:15,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:39:15,865 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:39:15,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:39:15,889 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:39:15,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:39:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:39:15,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694795523] [2021-03-24 22:39:15,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:39:15,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:39:15,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549880618] [2021-03-24 22:39:15,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:39:15,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:39:15,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:39:15,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:39:15,911 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:39:15,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 971 transitions, 41904 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:15,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:39:15,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:39:15,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:39:20,492 INFO L129 PetriNetUnfolder]: 547/9796 cut-off events. [2021-03-24 22:39:20,492 INFO L130 PetriNetUnfolder]: For 454916/468230 co-relation queries the response was YES. [2021-03-24 22:39:20,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78259 conditions, 9796 events. 547/9796 cut-off events. For 454916/468230 co-relation queries the response was YES. Maximal size of possible extension queue 1537. Compared 174698 event pairs, 523 based on Foata normal form. 84/9394 useless extension candidates. Maximal degree in co-relation 78098. Up to 1828 conditions per place. [2021-03-24 22:39:20,579 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 433 selfloop transitions, 533 changer transitions 2/982 dead transitions. [2021-03-24 22:39:20,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 982 transitions, 44060 flow [2021-03-24 22:39:20,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:39:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:39:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:39:20,580 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:39:20,580 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:39:20,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:39:20,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:39:20,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:39:20,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:20,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:20,581 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:20,581 INFO L185 Difference]: Start difference. First operand has 423 places, 971 transitions, 41904 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:39:20,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 982 transitions, 44060 flow [2021-03-24 22:39:24,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 982 transitions, 43003 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-24 22:39:24,283 INFO L241 Difference]: Finished difference. Result has 426 places, 972 transitions, 41953 flow [2021-03-24 22:39:24,284 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40857, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41953, PETRI_PLACES=426, PETRI_TRANSITIONS=972} [2021-03-24 22:39:24,284 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 382 predicate places. [2021-03-24 22:39:24,284 INFO L480 AbstractCegarLoop]: Abstraction has has 426 places, 972 transitions, 41953 flow [2021-03-24 22:39:24,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:24,284 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:39:24,284 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] [2021-03-24 22:39:24,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-24 22:39:24,284 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:39:24,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:39:24,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1872367036, now seen corresponding path program 61 times [2021-03-24 22:39:24,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:39:24,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438820960] [2021-03-24 22:39:24,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:39:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:39:24,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:39:24,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:39:24,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:39:24,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:39:24,298 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:39:24,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:39:24,305 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:39:24,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:39:24,314 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:39:24,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:39:24,335 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:39:24,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:39:24,364 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:39:24,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:39:24,389 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:39:24,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:39:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:39:24,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438820960] [2021-03-24 22:39:24,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:39:24,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:39:24,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441791846] [2021-03-24 22:39:24,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:39:24,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:39:24,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:39:24,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:39:24,413 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:39:24,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 972 transitions, 41953 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:24,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:39:24,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:39:24,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:39:29,541 INFO L129 PetriNetUnfolder]: 547/9788 cut-off events. [2021-03-24 22:39:29,541 INFO L130 PetriNetUnfolder]: For 455464/468778 co-relation queries the response was YES. [2021-03-24 22:39:29,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78231 conditions, 9788 events. 547/9788 cut-off events. For 455464/468778 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 174538 event pairs, 523 based on Foata normal form. 84/9386 useless extension candidates. Maximal degree in co-relation 78069. Up to 1828 conditions per place. [2021-03-24 22:39:29,661 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 432 selfloop transitions, 532 changer transitions 2/980 dead transitions. [2021-03-24 22:39:29,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 980 transitions, 44008 flow [2021-03-24 22:39:29,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:39:29,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:39:29,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:39:29,662 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:39:29,662 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:39:29,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:39:29,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:39:29,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:39:29,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:29,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:29,663 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:29,663 INFO L185 Difference]: Start difference. First operand has 426 places, 972 transitions, 41953 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:39:29,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 980 transitions, 44008 flow [2021-03-24 22:39:33,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 980 transitions, 43006 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-03-24 22:39:33,715 INFO L241 Difference]: Finished difference. Result has 429 places, 970 transitions, 41917 flow [2021-03-24 22:39:33,715 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40961, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=972, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=532, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41917, PETRI_PLACES=429, PETRI_TRANSITIONS=970} [2021-03-24 22:39:33,715 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 385 predicate places. [2021-03-24 22:39:33,715 INFO L480 AbstractCegarLoop]: Abstraction has has 429 places, 970 transitions, 41917 flow [2021-03-24 22:39:33,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:33,716 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:39:33,716 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] [2021-03-24 22:39:33,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-24 22:39:33,716 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:39:33,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:39:33,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1945478112, now seen corresponding path program 62 times [2021-03-24 22:39:33,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:39:33,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128255317] [2021-03-24 22:39:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:39:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:39:33,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:39:33,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:39:33,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:39:33,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:39:33,729 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:39:33,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:39:33,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:39:33,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:39:33,744 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:39:33,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:39:33,756 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:39:33,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:39:33,784 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:39:33,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:39:33,810 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:39:33,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:39:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:39:33,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128255317] [2021-03-24 22:39:33,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:39:33,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:39:33,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335191594] [2021-03-24 22:39:33,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:39:33,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:39:33,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:39:33,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:39:33,834 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:39:33,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 970 transitions, 41917 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:33,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:39:33,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:39:33,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:39:38,595 INFO L129 PetriNetUnfolder]: 547/9780 cut-off events. [2021-03-24 22:39:38,596 INFO L130 PetriNetUnfolder]: For 454129/467433 co-relation queries the response was YES. [2021-03-24 22:39:38,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78296 conditions, 9780 events. 547/9780 cut-off events. For 454129/467433 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 174368 event pairs, 523 based on Foata normal form. 82/9376 useless extension candidates. Maximal degree in co-relation 78134. Up to 1828 conditions per place. [2021-03-24 22:39:38,690 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 437 selfloop transitions, 530 changer transitions 2/983 dead transitions. [2021-03-24 22:39:38,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 983 transitions, 44185 flow [2021-03-24 22:39:38,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:39:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:39:38,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:39:38,691 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:39:38,691 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:39:38,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:39:38,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:39:38,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:39:38,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:38,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:38,693 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:38,693 INFO L185 Difference]: Start difference. First operand has 429 places, 970 transitions, 41917 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:39:38,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 983 transitions, 44185 flow [2021-03-24 22:39:42,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 983 transitions, 43194 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 22:39:42,551 INFO L241 Difference]: Finished difference. Result has 433 places, 973 transitions, 42173 flow [2021-03-24 22:39:42,552 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=40941, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=525, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42173, PETRI_PLACES=433, PETRI_TRANSITIONS=973} [2021-03-24 22:39:42,552 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 389 predicate places. [2021-03-24 22:39:42,552 INFO L480 AbstractCegarLoop]: Abstraction has has 433 places, 973 transitions, 42173 flow [2021-03-24 22:39:42,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:42,552 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:39:42,552 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] [2021-03-24 22:39:42,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-24 22:39:42,552 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:39:42,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:39:42,552 INFO L82 PathProgramCache]: Analyzing trace with hash 248327304, now seen corresponding path program 63 times [2021-03-24 22:39:42,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:39:42,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013925142] [2021-03-24 22:39:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:39:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:39:42,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:39:42,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:39:42,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:39:42,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:39:42,588 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:39:42,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:39:42,597 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:39:42,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:39:42,620 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:39:42,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:39:42,632 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:39:42,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:39:42,647 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:39:42,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:39:42,668 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:39:42,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:39:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:39:42,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013925142] [2021-03-24 22:39:42,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:39:42,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:39:42,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439811681] [2021-03-24 22:39:42,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:39:42,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:39:42,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:39:42,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:39:42,690 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:39:42,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 973 transitions, 42173 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:42,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:39:42,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:39:42,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:39:47,789 INFO L129 PetriNetUnfolder]: 547/9772 cut-off events. [2021-03-24 22:39:47,789 INFO L130 PetriNetUnfolder]: For 456880/470189 co-relation queries the response was YES. [2021-03-24 22:39:47,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78431 conditions, 9772 events. 547/9772 cut-off events. For 456880/470189 co-relation queries the response was YES. Maximal size of possible extension queue 1532. Compared 174132 event pairs, 523 based on Foata normal form. 84/9370 useless extension candidates. Maximal degree in co-relation 78268. Up to 1828 conditions per place. [2021-03-24 22:39:47,895 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 438 selfloop transitions, 530 changer transitions 2/984 dead transitions. [2021-03-24 22:39:47,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 984 transitions, 44396 flow [2021-03-24 22:39:47,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:39:47,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:39:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:39:47,896 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:39:47,896 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:39:47,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:39:47,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:39:47,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:39:47,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:47,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:47,899 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:47,899 INFO L185 Difference]: Start difference. First operand has 433 places, 973 transitions, 42173 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:39:47,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 984 transitions, 44396 flow [2021-03-24 22:39:51,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 984 transitions, 43412 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 22:39:51,971 INFO L241 Difference]: Finished difference. Result has 437 places, 974 transitions, 42334 flow [2021-03-24 22:39:51,972 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=41199, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=973, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42334, PETRI_PLACES=437, PETRI_TRANSITIONS=974} [2021-03-24 22:39:51,972 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 393 predicate places. [2021-03-24 22:39:51,972 INFO L480 AbstractCegarLoop]: Abstraction has has 437 places, 974 transitions, 42334 flow [2021-03-24 22:39:51,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:51,972 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:39:51,972 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:39:51,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-24 22:39:51,972 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:39:51,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:39:51,973 INFO L82 PathProgramCache]: Analyzing trace with hash 2087458452, now seen corresponding path program 64 times [2021-03-24 22:39:51,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:39:51,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310352050] [2021-03-24 22:39:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:39:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:39:51,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:39:51,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:39:51,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:39:51,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:39:51,985 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:39:51,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:39:51,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:39:51,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:39:51,999 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:39:51,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:39:52,011 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:39:52,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:39:52,039 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:39:52,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:39:52,063 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:39:52,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:39:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:39:52,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310352050] [2021-03-24 22:39:52,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:39:52,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:39:52,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507746134] [2021-03-24 22:39:52,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:39:52,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:39:52,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:39:52,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:39:52,128 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:39:52,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 974 transitions, 42334 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:52,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:39:52,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:39:52,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:39:56,669 INFO L129 PetriNetUnfolder]: 547/9764 cut-off events. [2021-03-24 22:39:56,669 INFO L130 PetriNetUnfolder]: For 457001/470310 co-relation queries the response was YES. [2021-03-24 22:39:56,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78526 conditions, 9764 events. 547/9764 cut-off events. For 457001/470310 co-relation queries the response was YES. Maximal size of possible extension queue 1530. Compared 174085 event pairs, 523 based on Foata normal form. 84/9362 useless extension candidates. Maximal degree in co-relation 78362. Up to 1828 conditions per place. [2021-03-24 22:39:56,782 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 438 selfloop transitions, 528 changer transitions 2/982 dead transitions. [2021-03-24 22:39:56,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 982 transitions, 44393 flow [2021-03-24 22:39:56,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:39:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:39:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:39:56,783 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:39:56,783 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:39:56,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:39:56,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:39:56,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:39:56,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:56,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:56,784 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:39:56,784 INFO L185 Difference]: Start difference. First operand has 437 places, 974 transitions, 42334 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:39:56,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 982 transitions, 44393 flow [2021-03-24 22:40:00,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 982 transitions, 43341 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 22:40:00,805 INFO L241 Difference]: Finished difference. Result has 439 places, 972 transitions, 42248 flow [2021-03-24 22:40:00,806 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=41292, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=974, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42248, PETRI_PLACES=439, PETRI_TRANSITIONS=972} [2021-03-24 22:40:00,806 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 395 predicate places. [2021-03-24 22:40:00,806 INFO L480 AbstractCegarLoop]: Abstraction has has 439 places, 972 transitions, 42248 flow [2021-03-24 22:40:00,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:00,806 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:40:00,806 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] [2021-03-24 22:40:00,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-24 22:40:00,807 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:40:00,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:40:00,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1851813480, now seen corresponding path program 65 times [2021-03-24 22:40:00,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:40:00,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318636333] [2021-03-24 22:40:00,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:40:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:40:00,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:40:00,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:40:00,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:40:00,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:40:00,850 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:40:00,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:40:00,856 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:40:00,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:40:00,864 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:40:00,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:40:00,883 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:40:00,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:40:00,899 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:40:00,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:40:00,919 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:40:00,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:40:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:40:00,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318636333] [2021-03-24 22:40:00,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:40:00,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:40:00,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181212697] [2021-03-24 22:40:00,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:40:00,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:40:00,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:40:00,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:40:00,939 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:40:00,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 972 transitions, 42248 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:00,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:40:00,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:40:00,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:40:06,505 INFO L129 PetriNetUnfolder]: 547/9756 cut-off events. [2021-03-24 22:40:06,505 INFO L130 PetriNetUnfolder]: For 456394/469703 co-relation queries the response was YES. [2021-03-24 22:40:06,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78480 conditions, 9756 events. 547/9756 cut-off events. For 456394/469703 co-relation queries the response was YES. Maximal size of possible extension queue 1529. Compared 173914 event pairs, 523 based on Foata normal form. 84/9354 useless extension candidates. Maximal degree in co-relation 78316. Up to 1828 conditions per place. [2021-03-24 22:40:06,671 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 425 selfloop transitions, 539 changer transitions 2/980 dead transitions. [2021-03-24 22:40:06,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 980 transitions, 44303 flow [2021-03-24 22:40:06,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:40:06,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:40:06,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:40:06,673 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:40:06,673 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:40:06,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:40:06,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:40:06,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:40:06,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:06,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:06,674 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:06,674 INFO L185 Difference]: Start difference. First operand has 439 places, 972 transitions, 42248 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:40:06,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 980 transitions, 44303 flow [2021-03-24 22:40:11,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 980 transitions, 43229 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 22:40:11,027 INFO L241 Difference]: Finished difference. Result has 440 places, 970 transitions, 42148 flow [2021-03-24 22:40:11,028 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=41184, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=972, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=539, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42148, PETRI_PLACES=440, PETRI_TRANSITIONS=970} [2021-03-24 22:40:11,028 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 396 predicate places. [2021-03-24 22:40:11,028 INFO L480 AbstractCegarLoop]: Abstraction has has 440 places, 970 transitions, 42148 flow [2021-03-24 22:40:11,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:11,028 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:40:11,028 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] [2021-03-24 22:40:11,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-24 22:40:11,028 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:40:11,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:40:11,028 INFO L82 PathProgramCache]: Analyzing trace with hash -367275996, now seen corresponding path program 66 times [2021-03-24 22:40:11,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:40:11,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788851073] [2021-03-24 22:40:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:40:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:40:11,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:40:11,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:40:11,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:40:11,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:40:11,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:40:11,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:40:11,046 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:40:11,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:40:11,055 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:40:11,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:40:11,067 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:40:11,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:40:11,084 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:40:11,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:40:11,108 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:40:11,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:40:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:40:11,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788851073] [2021-03-24 22:40:11,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:40:11,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:40:11,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583153221] [2021-03-24 22:40:11,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:40:11,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:40:11,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:40:11,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:40:11,132 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:40:11,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 970 transitions, 42148 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:11,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:40:11,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:40:11,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:40:16,181 INFO L129 PetriNetUnfolder]: 523/9962 cut-off events. [2021-03-24 22:40:16,182 INFO L130 PetriNetUnfolder]: For 465010/478319 co-relation queries the response was YES. [2021-03-24 22:40:16,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79946 conditions, 9962 events. 523/9962 cut-off events. For 465010/478319 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 178767 event pairs, 523 based on Foata normal form. 66/9535 useless extension candidates. Maximal degree in co-relation 79783. Up to 1766 conditions per place. [2021-03-24 22:40:16,314 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 581 selfloop transitions, 497 changer transitions 1/1093 dead transitions. [2021-03-24 22:40:16,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 1093 transitions, 50047 flow [2021-03-24 22:40:16,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:40:16,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:40:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:40:16,315 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:40:16,315 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:40:16,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:40:16,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:40:16,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:40:16,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:16,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:16,317 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:16,317 INFO L185 Difference]: Start difference. First operand has 440 places, 970 transitions, 42148 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:40:16,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 1093 transitions, 50047 flow [2021-03-24 22:40:20,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 1093 transitions, 49112 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-24 22:40:20,734 INFO L241 Difference]: Finished difference. Result has 447 places, 1004 transitions, 44257 flow [2021-03-24 22:40:20,734 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=41268, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44257, PETRI_PLACES=447, PETRI_TRANSITIONS=1004} [2021-03-24 22:40:20,734 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 403 predicate places. [2021-03-24 22:40:20,734 INFO L480 AbstractCegarLoop]: Abstraction has has 447 places, 1004 transitions, 44257 flow [2021-03-24 22:40:20,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:20,735 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:40:20,735 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] [2021-03-24 22:40:20,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-24 22:40:20,735 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:40:20,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:40:20,735 INFO L82 PathProgramCache]: Analyzing trace with hash 953425414, now seen corresponding path program 67 times [2021-03-24 22:40:20,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:40:20,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707256370] [2021-03-24 22:40:20,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:40:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:40:20,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:40:20,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:40:20,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:40:20,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:40:20,748 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:40:20,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:40:20,754 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:40:20,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:40:20,764 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:40:20,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:40:20,776 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:40:20,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:40:20,793 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:40:20,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:40:20,817 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:40:20,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:40:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:40:20,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707256370] [2021-03-24 22:40:20,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:40:20,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:40:20,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588093015] [2021-03-24 22:40:20,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:40:20,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:40:20,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:40:20,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:40:20,842 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:40:20,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1004 transitions, 44257 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:20,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:40:20,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:40:20,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:40:25,779 INFO L129 PetriNetUnfolder]: 523/9955 cut-off events. [2021-03-24 22:40:25,779 INFO L130 PetriNetUnfolder]: For 477600/490953 co-relation queries the response was YES. [2021-03-24 22:40:25,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80652 conditions, 9955 events. 523/9955 cut-off events. For 477600/490953 co-relation queries the response was YES. Maximal size of possible extension queue 1569. Compared 178654 event pairs, 523 based on Foata normal form. 84/9538 useless extension candidates. Maximal degree in co-relation 80485. Up to 1828 conditions per place. [2021-03-24 22:40:25,870 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 477 selfloop transitions, 544 changer transitions 1/1036 dead transitions. [2021-03-24 22:40:25,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1036 transitions, 47685 flow [2021-03-24 22:40:25,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:40:25,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:40:25,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:40:25,871 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:40:25,871 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:40:25,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:40:25,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:40:25,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:40:25,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:25,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:25,874 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:25,874 INFO L185 Difference]: Start difference. First operand has 447 places, 1004 transitions, 44257 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:40:25,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 1036 transitions, 47685 flow [2021-03-24 22:40:30,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 1036 transitions, 46882 flow, removed 34 selfloop flow, removed 5 redundant places. [2021-03-24 22:40:30,256 INFO L241 Difference]: Finished difference. Result has 452 places, 1007 transitions, 44878 flow [2021-03-24 22:40:30,257 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43471, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44878, PETRI_PLACES=452, PETRI_TRANSITIONS=1007} [2021-03-24 22:40:30,257 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 408 predicate places. [2021-03-24 22:40:30,257 INFO L480 AbstractCegarLoop]: Abstraction has has 452 places, 1007 transitions, 44878 flow [2021-03-24 22:40:30,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:30,257 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:40:30,257 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] [2021-03-24 22:40:30,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-24 22:40:30,257 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:40:30,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:40:30,258 INFO L82 PathProgramCache]: Analyzing trace with hash 2136229728, now seen corresponding path program 68 times [2021-03-24 22:40:30,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:40:30,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537052428] [2021-03-24 22:40:30,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:40:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:40:30,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:40:30,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:40:30,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:40:30,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:40:30,312 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:40:30,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:40:30,318 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:40:30,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:40:30,328 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:40:30,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:40:30,343 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:40:30,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:40:30,362 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:40:30,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:40:30,387 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:40:30,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:40:30,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:40:30,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537052428] [2021-03-24 22:40:30,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:40:30,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:40:30,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920980007] [2021-03-24 22:40:30,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:40:30,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:40:30,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:40:30,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:40:30,409 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:40:30,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 1007 transitions, 44878 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:30,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:40:30,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:40:30,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:40:35,484 INFO L129 PetriNetUnfolder]: 523/9948 cut-off events. [2021-03-24 22:40:35,484 INFO L130 PetriNetUnfolder]: For 485525/500979 co-relation queries the response was YES. [2021-03-24 22:40:35,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81194 conditions, 9948 events. 523/9948 cut-off events. For 485525/500979 co-relation queries the response was YES. Maximal size of possible extension queue 1568. Compared 178398 event pairs, 523 based on Foata normal form. 96/9543 useless extension candidates. Maximal degree in co-relation 81026. Up to 1828 conditions per place. [2021-03-24 22:40:35,586 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 474 selfloop transitions, 545 changer transitions 2/1035 dead transitions. [2021-03-24 22:40:35,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 1035 transitions, 48120 flow [2021-03-24 22:40:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:40:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:40:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:40:35,587 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:40:35,587 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:40:35,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:40:35,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:40:35,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:40:35,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:35,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:35,589 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:35,589 INFO L185 Difference]: Start difference. First operand has 452 places, 1007 transitions, 44878 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:40:35,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 1035 transitions, 48120 flow [2021-03-24 22:40:40,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1035 transitions, 47123 flow, removed 31 selfloop flow, removed 6 redundant places. [2021-03-24 22:40:40,042 INFO L241 Difference]: Finished difference. Result has 455 places, 1010 transitions, 45183 flow [2021-03-24 22:40:40,042 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=43891, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1007, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=45183, PETRI_PLACES=455, PETRI_TRANSITIONS=1010} [2021-03-24 22:40:40,043 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 411 predicate places. [2021-03-24 22:40:40,043 INFO L480 AbstractCegarLoop]: Abstraction has has 455 places, 1010 transitions, 45183 flow [2021-03-24 22:40:40,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:40,043 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:40:40,043 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] [2021-03-24 22:40:40,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-24 22:40:40,043 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:40:40,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:40:40,043 INFO L82 PathProgramCache]: Analyzing trace with hash -558299714, now seen corresponding path program 69 times [2021-03-24 22:40:40,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:40:40,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723826436] [2021-03-24 22:40:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:40:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:40:40,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:40:40,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:40:40,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:40:40,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:40:40,071 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:40:40,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:40:40,077 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:40:40,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:40:40,085 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:40:40,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:40:40,098 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:40:40,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:40:40,114 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:40:40,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:40:40,134 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:40:40,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:40:40,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:40:40,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723826436] [2021-03-24 22:40:40,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:40:40,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:40:40,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046101806] [2021-03-24 22:40:40,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:40:40,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:40:40,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:40:40,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:40:40,153 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:40:40,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 1010 transitions, 45183 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:40,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:40:40,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:40:40,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:40:44,838 INFO L129 PetriNetUnfolder]: 523/9940 cut-off events. [2021-03-24 22:40:44,838 INFO L130 PetriNetUnfolder]: For 480538/495992 co-relation queries the response was YES. [2021-03-24 22:40:44,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81511 conditions, 9940 events. 523/9940 cut-off events. For 480538/495992 co-relation queries the response was YES. Maximal size of possible extension queue 1566. Compared 178285 event pairs, 523 based on Foata normal form. 96/9535 useless extension candidates. Maximal degree in co-relation 81344. Up to 1828 conditions per place. [2021-03-24 22:40:44,929 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 455 selfloop transitions, 563 changer transitions 1/1033 dead transitions. [2021-03-24 22:40:44,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1033 transitions, 48131 flow [2021-03-24 22:40:44,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:40:44,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:40:44,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:40:44,930 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:40:44,930 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:40:44,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:40:44,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:40:44,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:40:44,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:44,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:44,931 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:44,931 INFO L185 Difference]: Start difference. First operand has 455 places, 1010 transitions, 45183 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:40:44,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1033 transitions, 48131 flow [2021-03-24 22:40:49,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1033 transitions, 47044 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-24 22:40:49,300 INFO L241 Difference]: Finished difference. Result has 458 places, 1024 transitions, 46035 flow [2021-03-24 22:40:49,300 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=44106, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1010, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=548, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46035, PETRI_PLACES=458, PETRI_TRANSITIONS=1024} [2021-03-24 22:40:49,300 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 414 predicate places. [2021-03-24 22:40:49,300 INFO L480 AbstractCegarLoop]: Abstraction has has 458 places, 1024 transitions, 46035 flow [2021-03-24 22:40:49,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:49,300 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:40:49,301 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] [2021-03-24 22:40:49,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-24 22:40:49,301 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:40:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:40:49,301 INFO L82 PathProgramCache]: Analyzing trace with hash -20444136, now seen corresponding path program 70 times [2021-03-24 22:40:49,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:40:49,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037761332] [2021-03-24 22:40:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:40:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:40:49,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:40:49,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:40:49,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:40:49,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:40:49,327 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:40:49,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:40:49,333 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:40:49,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:40:49,341 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:40:49,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:40:49,353 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:40:49,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:40:49,375 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:40:49,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:40:49,403 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:40:49,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:40:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:40:49,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037761332] [2021-03-24 22:40:49,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:40:49,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:40:49,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523653587] [2021-03-24 22:40:49,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:40:49,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:40:49,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:40:49,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:40:49,425 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:40:49,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 1024 transitions, 46035 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:49,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:40:49,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:40:49,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:40:54,248 INFO L129 PetriNetUnfolder]: 523/9935 cut-off events. [2021-03-24 22:40:54,248 INFO L130 PetriNetUnfolder]: For 483568/499017 co-relation queries the response was YES. [2021-03-24 22:40:54,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81568 conditions, 9935 events. 523/9935 cut-off events. For 483568/499017 co-relation queries the response was YES. Maximal size of possible extension queue 1565. Compared 178163 event pairs, 523 based on Foata normal form. 94/9529 useless extension candidates. Maximal degree in co-relation 81400. Up to 1828 conditions per place. [2021-03-24 22:40:54,338 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 457 selfloop transitions, 559 changer transitions 2/1032 dead transitions. [2021-03-24 22:40:54,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 1032 transitions, 48224 flow [2021-03-24 22:40:54,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:40:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:40:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:40:54,339 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:40:54,339 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:40:54,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:40:54,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:40:54,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:40:54,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:54,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:54,340 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:54,340 INFO L185 Difference]: Start difference. First operand has 458 places, 1024 transitions, 46035 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:40:54,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 1032 transitions, 48224 flow [2021-03-24 22:40:58,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 1032 transitions, 47185 flow, removed 12 selfloop flow, removed 5 redundant places. [2021-03-24 22:40:58,730 INFO L241 Difference]: Finished difference. Result has 462 places, 1023 transitions, 46081 flow [2021-03-24 22:40:58,731 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45006, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1024, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=558, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46081, PETRI_PLACES=462, PETRI_TRANSITIONS=1023} [2021-03-24 22:40:58,731 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 418 predicate places. [2021-03-24 22:40:58,731 INFO L480 AbstractCegarLoop]: Abstraction has has 462 places, 1023 transitions, 46081 flow [2021-03-24 22:40:58,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:58,731 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:40:58,731 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] [2021-03-24 22:40:58,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-24 22:40:58,731 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:40:58,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:40:58,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1751411010, now seen corresponding path program 71 times [2021-03-24 22:40:58,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:40:58,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296232390] [2021-03-24 22:40:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:40:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:40:58,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:40:58,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:40:58,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:40:58,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:40:58,768 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:40:58,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:40:58,774 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:40:58,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:40:58,783 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:40:58,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:40:58,795 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:40:58,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:40:58,823 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:40:58,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:40:58,849 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:40:58,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:40:58,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:40:58,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296232390] [2021-03-24 22:40:58,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:40:58,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:40:58,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975357178] [2021-03-24 22:40:58,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:40:58,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:40:58,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:40:58,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:40:58,872 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:40:58,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1023 transitions, 46081 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:40:58,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:40:58,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:40:58,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:41:03,689 INFO L129 PetriNetUnfolder]: 523/9925 cut-off events. [2021-03-24 22:41:03,689 INFO L130 PetriNetUnfolder]: For 482174/495603 co-relation queries the response was YES. [2021-03-24 22:41:03,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81603 conditions, 9925 events. 523/9925 cut-off events. For 482174/495603 co-relation queries the response was YES. Maximal size of possible extension queue 1563. Compared 177829 event pairs, 523 based on Foata normal form. 94/9519 useless extension candidates. Maximal degree in co-relation 81434. Up to 1828 conditions per place. [2021-03-24 22:41:03,799 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 470 selfloop transitions, 544 changer transitions 2/1030 dead transitions. [2021-03-24 22:41:03,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 1030 transitions, 48221 flow [2021-03-24 22:41:03,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:41:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:41:03,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:41:03,800 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:41:03,800 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:41:03,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:41:03,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:41:03,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:41:03,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:03,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:03,801 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:03,801 INFO L185 Difference]: Start difference. First operand has 462 places, 1023 transitions, 46081 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:41:03,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 1030 transitions, 48221 flow [2021-03-24 22:41:08,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1030 transitions, 47316 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-24 22:41:08,725 INFO L241 Difference]: Finished difference. Result has 466 places, 1023 transitions, 46300 flow [2021-03-24 22:41:08,726 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45186, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1023, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46300, PETRI_PLACES=466, PETRI_TRANSITIONS=1023} [2021-03-24 22:41:08,726 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 422 predicate places. [2021-03-24 22:41:08,726 INFO L480 AbstractCegarLoop]: Abstraction has has 466 places, 1023 transitions, 46300 flow [2021-03-24 22:41:08,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:08,726 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:41:08,726 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] [2021-03-24 22:41:08,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-24 22:41:08,726 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:41:08,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:41:08,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1349280428, now seen corresponding path program 72 times [2021-03-24 22:41:08,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:41:08,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772493907] [2021-03-24 22:41:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:41:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:41:08,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:41:08,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:41:08,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:41:08,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:41:08,762 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:41:08,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:41:08,768 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:41:08,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:41:08,778 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:41:08,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:41:08,790 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:41:08,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:41:08,818 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:41:08,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:41:08,855 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:41:08,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:41:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:41:08,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772493907] [2021-03-24 22:41:08,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:41:08,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:41:08,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657545957] [2021-03-24 22:41:08,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:41:08,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:41:08,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:41:08,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:41:08,878 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:41:08,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 1023 transitions, 46300 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:08,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:41:08,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:41:08,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:41:13,765 INFO L129 PetriNetUnfolder]: 523/9917 cut-off events. [2021-03-24 22:41:13,766 INFO L130 PetriNetUnfolder]: For 485489/498923 co-relation queries the response was YES. [2021-03-24 22:41:13,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81985 conditions, 9917 events. 523/9917 cut-off events. For 485489/498923 co-relation queries the response was YES. Maximal size of possible extension queue 1561. Compared 177704 event pairs, 523 based on Foata normal form. 96/9513 useless extension candidates. Maximal degree in co-relation 81815. Up to 1828 conditions per place. [2021-03-24 22:41:13,856 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 472 selfloop transitions, 541 changer transitions 1/1028 dead transitions. [2021-03-24 22:41:13,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 1028 transitions, 48348 flow [2021-03-24 22:41:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:41:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:41:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:41:13,857 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:41:13,857 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:41:13,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:41:13,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:41:13,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:41:13,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:13,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:13,858 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:13,858 INFO L185 Difference]: Start difference. First operand has 466 places, 1023 transitions, 46300 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:41:13,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 1028 transitions, 48348 flow [2021-03-24 22:41:18,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1028 transitions, 47301 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-03-24 22:41:18,187 INFO L241 Difference]: Finished difference. Result has 469 places, 1022 transitions, 46275 flow [2021-03-24 22:41:18,188 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45263, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1023, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46275, PETRI_PLACES=469, PETRI_TRANSITIONS=1022} [2021-03-24 22:41:18,188 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 425 predicate places. [2021-03-24 22:41:18,188 INFO L480 AbstractCegarLoop]: Abstraction has has 469 places, 1022 transitions, 46275 flow [2021-03-24 22:41:18,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:18,188 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:41:18,188 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] [2021-03-24 22:41:18,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-24 22:41:18,188 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:41:18,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:41:18,189 INFO L82 PathProgramCache]: Analyzing trace with hash -757023354, now seen corresponding path program 73 times [2021-03-24 22:41:18,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:41:18,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858401222] [2021-03-24 22:41:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:41:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:41:18,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:41:18,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:41:18,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:41:18,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:41:18,200 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:41:18,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:41:18,206 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:41:18,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:41:18,215 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:41:18,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:41:18,238 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:41:18,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:41:18,257 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:41:18,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:41:18,314 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:41:18,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:41:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:41:18,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858401222] [2021-03-24 22:41:18,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:41:18,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:41:18,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012194686] [2021-03-24 22:41:18,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:41:18,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:41:18,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:41:18,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:41:18,336 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:41:18,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 1022 transitions, 46275 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:18,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:41:18,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:41:18,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:41:22,940 INFO L129 PetriNetUnfolder]: 523/9910 cut-off events. [2021-03-24 22:41:22,941 INFO L130 PetriNetUnfolder]: For 484548/497982 co-relation queries the response was YES. [2021-03-24 22:41:23,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82054 conditions, 9910 events. 523/9910 cut-off events. For 484548/497982 co-relation queries the response was YES. Maximal size of possible extension queue 1561. Compared 177564 event pairs, 523 based on Foata normal form. 74/9484 useless extension candidates. Maximal degree in co-relation 81884. Up to 1720 conditions per place. [2021-03-24 22:41:23,037 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 497 selfloop transitions, 550 changer transitions 2/1063 dead transitions. [2021-03-24 22:41:23,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 1063 transitions, 49881 flow [2021-03-24 22:41:23,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:41:23,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:41:23,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:41:23,038 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:41:23,038 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:41:23,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:41:23,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:41:23,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:41:23,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:23,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:23,040 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:23,040 INFO L185 Difference]: Start difference. First operand has 469 places, 1022 transitions, 46275 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:41:23,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 1063 transitions, 49881 flow [2021-03-24 22:41:27,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 1063 transitions, 48765 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 22:41:27,476 INFO L241 Difference]: Finished difference. Result has 473 places, 1033 transitions, 46862 flow [2021-03-24 22:41:27,477 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45203, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=46862, PETRI_PLACES=473, PETRI_TRANSITIONS=1033} [2021-03-24 22:41:27,477 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 429 predicate places. [2021-03-24 22:41:27,477 INFO L480 AbstractCegarLoop]: Abstraction has has 473 places, 1033 transitions, 46862 flow [2021-03-24 22:41:27,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:27,477 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:41:27,477 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] [2021-03-24 22:41:27,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-24 22:41:27,477 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:41:27,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:41:27,478 INFO L82 PathProgramCache]: Analyzing trace with hash -177274904, now seen corresponding path program 74 times [2021-03-24 22:41:27,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:41:27,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38319199] [2021-03-24 22:41:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:41:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:41:27,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:41:27,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:41:27,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:41:27,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:41:27,489 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:41:27,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:41:27,495 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:41:27,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:41:27,503 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:41:27,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:41:27,525 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:41:27,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:41:27,544 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:41:27,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:41:27,568 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:41:27,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:41:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:41:27,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38319199] [2021-03-24 22:41:27,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:41:27,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:41:27,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272787983] [2021-03-24 22:41:27,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:41:27,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:41:27,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:41:27,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:41:27,589 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:41:27,590 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 1033 transitions, 46862 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:27,590 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:41:27,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:41:27,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:41:32,469 INFO L129 PetriNetUnfolder]: 523/9902 cut-off events. [2021-03-24 22:41:32,469 INFO L130 PetriNetUnfolder]: For 490794/504228 co-relation queries the response was YES. [2021-03-24 22:41:32,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82293 conditions, 9902 events. 523/9902 cut-off events. For 490794/504228 co-relation queries the response was YES. Maximal size of possible extension queue 1559. Compared 177452 event pairs, 523 based on Foata normal form. 74/9473 useless extension candidates. Maximal degree in co-relation 82121. Up to 1720 conditions per place. [2021-03-24 22:41:32,559 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 491 selfloop transitions, 549 changer transitions 1/1055 dead transitions. [2021-03-24 22:41:32,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 1055 transitions, 49657 flow [2021-03-24 22:41:32,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:41:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:41:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:41:32,560 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:41:32,560 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:41:32,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:41:32,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:41:32,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:41:32,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:32,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:32,561 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:32,561 INFO L185 Difference]: Start difference. First operand has 473 places, 1033 transitions, 46862 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:41:32,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 1055 transitions, 49657 flow [2021-03-24 22:41:37,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1055 transitions, 48667 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-24 22:41:37,077 INFO L241 Difference]: Finished difference. Result has 477 places, 1034 transitions, 47059 flow [2021-03-24 22:41:37,078 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=45882, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1033, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=547, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=47059, PETRI_PLACES=477, PETRI_TRANSITIONS=1034} [2021-03-24 22:41:37,078 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 433 predicate places. [2021-03-24 22:41:37,078 INFO L480 AbstractCegarLoop]: Abstraction has has 477 places, 1034 transitions, 47059 flow [2021-03-24 22:41:37,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:37,078 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:41:37,078 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] [2021-03-24 22:41:37,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-24 22:41:37,078 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:41:37,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:41:37,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1457430648, now seen corresponding path program 75 times [2021-03-24 22:41:37,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:41:37,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443740112] [2021-03-24 22:41:37,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:41:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:41:37,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:41:37,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:41:37,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:41:37,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:41:37,090 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:41:37,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:41:37,095 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:41:37,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:41:37,104 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:41:37,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:41:37,115 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:41:37,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:41:37,132 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:41:37,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:41:37,156 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:41:37,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:41:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:41:37,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443740112] [2021-03-24 22:41:37,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:41:37,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:41:37,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449579103] [2021-03-24 22:41:37,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:41:37,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:41:37,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:41:37,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:41:37,179 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:41:37,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 1034 transitions, 47059 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:37,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:41:37,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:41:37,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:41:42,189 INFO L129 PetriNetUnfolder]: 523/9898 cut-off events. [2021-03-24 22:41:42,189 INFO L130 PetriNetUnfolder]: For 491369/504803 co-relation queries the response was YES. [2021-03-24 22:41:42,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82457 conditions, 9898 events. 523/9898 cut-off events. For 491369/504803 co-relation queries the response was YES. Maximal size of possible extension queue 1558. Compared 177357 event pairs, 523 based on Foata normal form. 74/9470 useless extension candidates. Maximal degree in co-relation 82284. Up to 1720 conditions per place. [2021-03-24 22:41:42,292 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 521 selfloop transitions, 543 changer transitions 1/1079 dead transitions. [2021-03-24 22:41:42,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 1079 transitions, 51016 flow [2021-03-24 22:41:42,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:41:42,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:41:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:41:42,293 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:41:42,293 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:41:42,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:41:42,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:41:42,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:41:42,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:42,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:42,294 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:42,294 INFO L185 Difference]: Start difference. First operand has 477 places, 1034 transitions, 47059 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:41:42,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 1079 transitions, 51016 flow [2021-03-24 22:41:47,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 1079 transitions, 50041 flow, removed 57 selfloop flow, removed 5 redundant places. [2021-03-24 22:41:47,056 INFO L241 Difference]: Finished difference. Result has 482 places, 1063 transitions, 48741 flow [2021-03-24 22:41:47,057 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=46114, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1034, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48741, PETRI_PLACES=482, PETRI_TRANSITIONS=1063} [2021-03-24 22:41:47,057 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 438 predicate places. [2021-03-24 22:41:47,057 INFO L480 AbstractCegarLoop]: Abstraction has has 482 places, 1063 transitions, 48741 flow [2021-03-24 22:41:47,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:47,057 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:41:47,057 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] [2021-03-24 22:41:47,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-24 22:41:47,057 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:41:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:41:47,057 INFO L82 PathProgramCache]: Analyzing trace with hash 850628048, now seen corresponding path program 76 times [2021-03-24 22:41:47,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:41:47,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789141781] [2021-03-24 22:41:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:41:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:41:47,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:41:47,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:41:47,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:41:47,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:41:47,069 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:41:47,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:41:47,074 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:41:47,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:41:47,083 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:41:47,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:41:47,094 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:41:47,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:41:47,111 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:41:47,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:41:47,136 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:41:47,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:41:47,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:41:47,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789141781] [2021-03-24 22:41:47,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:41:47,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:41:47,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052902489] [2021-03-24 22:41:47,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:41:47,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:41:47,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:41:47,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:41:47,159 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:41:47,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 1063 transitions, 48741 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:47,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:41:47,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:41:47,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:41:52,313 INFO L129 PetriNetUnfolder]: 523/9892 cut-off events. [2021-03-24 22:41:52,313 INFO L130 PetriNetUnfolder]: For 501848/515282 co-relation queries the response was YES. [2021-03-24 22:41:52,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83333 conditions, 9892 events. 523/9892 cut-off events. For 501848/515282 co-relation queries the response was YES. Maximal size of possible extension queue 1557. Compared 177254 event pairs, 523 based on Foata normal form. 74/9486 useless extension candidates. Maximal degree in co-relation 83159. Up to 1720 conditions per place. [2021-03-24 22:41:52,407 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 520 selfloop transitions, 541 changer transitions 3/1078 dead transitions. [2021-03-24 22:41:52,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1078 transitions, 51400 flow [2021-03-24 22:41:52,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:41:52,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:41:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:41:52,408 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:41:52,408 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:41:52,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:41:52,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:41:52,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:41:52,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:52,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:52,409 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:52,409 INFO L185 Difference]: Start difference. First operand has 482 places, 1063 transitions, 48741 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:41:52,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1078 transitions, 51400 flow [2021-03-24 22:41:57,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1078 transitions, 50528 flow, removed 44 selfloop flow, removed 5 redundant places. [2021-03-24 22:41:57,246 INFO L241 Difference]: Finished difference. Result has 486 places, 1064 transitions, 49079 flow [2021-03-24 22:41:57,247 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=47879, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1063, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49079, PETRI_PLACES=486, PETRI_TRANSITIONS=1064} [2021-03-24 22:41:57,247 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 442 predicate places. [2021-03-24 22:41:57,247 INFO L480 AbstractCegarLoop]: Abstraction has has 486 places, 1064 transitions, 49079 flow [2021-03-24 22:41:57,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:57,247 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:41:57,247 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] [2021-03-24 22:41:57,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-24 22:41:57,247 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:41:57,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:41:57,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1514833396, now seen corresponding path program 77 times [2021-03-24 22:41:57,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:41:57,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780725678] [2021-03-24 22:41:57,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:41:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:41:57,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:41:57,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:41:57,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:41:57,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:41:57,259 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:41:57,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:41:57,264 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:41:57,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:41:57,273 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:41:57,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:41:57,294 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:41:57,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:41:57,325 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:41:57,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:41:57,348 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:41:57,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:41:57,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:41:57,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780725678] [2021-03-24 22:41:57,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:41:57,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:41:57,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329117156] [2021-03-24 22:41:57,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:41:57,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:41:57,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:41:57,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:41:57,370 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:41:57,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 1064 transitions, 49079 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:41:57,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:41:57,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:41:57,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:42:02,564 INFO L129 PetriNetUnfolder]: 523/9882 cut-off events. [2021-03-24 22:42:02,564 INFO L130 PetriNetUnfolder]: For 501420/514840 co-relation queries the response was YES. [2021-03-24 22:42:02,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83732 conditions, 9882 events. 523/9882 cut-off events. For 501420/514840 co-relation queries the response was YES. Maximal size of possible extension queue 1555. Compared 176998 event pairs, 523 based on Foata normal form. 74/9476 useless extension candidates. Maximal degree in co-relation 83558. Up to 1720 conditions per place. [2021-03-24 22:42:02,652 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 519 selfloop transitions, 540 changer transitions 2/1075 dead transitions. [2021-03-24 22:42:02,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 1075 transitions, 51511 flow [2021-03-24 22:42:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:42:02,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:42:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:42:02,654 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:42:02,654 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:42:02,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:42:02,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:42:02,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:42:02,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:02,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:02,655 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:02,655 INFO L185 Difference]: Start difference. First operand has 486 places, 1064 transitions, 49079 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:42:02,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 1075 transitions, 51511 flow [2021-03-24 22:42:07,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 1075 transitions, 50449 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 22:42:07,266 INFO L241 Difference]: Finished difference. Result has 488 places, 1062 transitions, 49006 flow [2021-03-24 22:42:07,267 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48027, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1064, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=540, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49006, PETRI_PLACES=488, PETRI_TRANSITIONS=1062} [2021-03-24 22:42:07,267 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 444 predicate places. [2021-03-24 22:42:07,267 INFO L480 AbstractCegarLoop]: Abstraction has has 488 places, 1062 transitions, 49006 flow [2021-03-24 22:42:07,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:07,267 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:42:07,267 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] [2021-03-24 22:42:07,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-24 22:42:07,268 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:42:07,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:42:07,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1025901608, now seen corresponding path program 78 times [2021-03-24 22:42:07,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:42:07,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428743313] [2021-03-24 22:42:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:42:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:42:07,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:42:07,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:42:07,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:42:07,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:42:07,282 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:42:07,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:42:07,288 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:42:07,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:42:07,297 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:42:07,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:42:07,318 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:42:07,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:42:07,336 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:42:07,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:42:07,359 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:42:07,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:42:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:42:07,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428743313] [2021-03-24 22:42:07,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:42:07,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:42:07,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773505055] [2021-03-24 22:42:07,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:42:07,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:42:07,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:42:07,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:42:07,381 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:42:07,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 1062 transitions, 49006 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:07,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:42:07,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:42:07,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:42:12,123 INFO L129 PetriNetUnfolder]: 523/9873 cut-off events. [2021-03-24 22:42:12,124 INFO L130 PetriNetUnfolder]: For 500726/514146 co-relation queries the response was YES. [2021-03-24 22:42:12,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83678 conditions, 9873 events. 523/9873 cut-off events. For 500726/514146 co-relation queries the response was YES. Maximal size of possible extension queue 1553. Compared 176715 event pairs, 523 based on Foata normal form. 74/9468 useless extension candidates. Maximal degree in co-relation 83504. Up to 1720 conditions per place. [2021-03-24 22:42:12,221 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 511 selfloop transitions, 546 changer transitions 2/1073 dead transitions. [2021-03-24 22:42:12,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 1073 transitions, 51434 flow [2021-03-24 22:42:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:42:12,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:42:12,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:42:12,222 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:42:12,223 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:42:12,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:42:12,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:42:12,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:42:12,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:12,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:12,224 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:12,224 INFO L185 Difference]: Start difference. First operand has 488 places, 1062 transitions, 49006 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:42:12,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 1073 transitions, 51434 flow [2021-03-24 22:42:17,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 1073 transitions, 50366 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-24 22:42:17,236 INFO L241 Difference]: Finished difference. Result has 491 places, 1062 transitions, 49058 flow [2021-03-24 22:42:17,236 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=47948, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=544, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49058, PETRI_PLACES=491, PETRI_TRANSITIONS=1062} [2021-03-24 22:42:17,236 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 447 predicate places. [2021-03-24 22:42:17,237 INFO L480 AbstractCegarLoop]: Abstraction has has 491 places, 1062 transitions, 49058 flow [2021-03-24 22:42:17,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:17,237 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:42:17,237 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] [2021-03-24 22:42:17,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-24 22:42:17,237 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:42:17,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:42:17,237 INFO L82 PathProgramCache]: Analyzing trace with hash 481848238, now seen corresponding path program 79 times [2021-03-24 22:42:17,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:42:17,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437702636] [2021-03-24 22:42:17,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:42:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:42:17,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:42:17,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:42:17,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:42:17,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:42:17,249 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:42:17,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:42:17,255 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:42:17,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:42:17,263 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:42:17,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:42:17,275 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:42:17,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:42:17,293 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:42:17,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:42:17,317 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:42:17,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:42:17,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:42:17,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437702636] [2021-03-24 22:42:17,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:42:17,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:42:17,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936568550] [2021-03-24 22:42:17,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:42:17,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:42:17,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:42:17,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:42:17,340 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:42:17,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 1062 transitions, 49058 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:17,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:42:17,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:42:17,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:42:22,428 INFO L129 PetriNetUnfolder]: 523/9864 cut-off events. [2021-03-24 22:42:22,429 INFO L130 PetriNetUnfolder]: For 500693/514108 co-relation queries the response was YES. [2021-03-24 22:42:22,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83626 conditions, 9864 events. 523/9864 cut-off events. For 500693/514108 co-relation queries the response was YES. Maximal size of possible extension queue 1552. Compared 176586 event pairs, 523 based on Foata normal form. 72/9457 useless extension candidates. Maximal degree in co-relation 83451. Up to 1720 conditions per place. [2021-03-24 22:42:22,524 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 530 selfloop transitions, 527 changer transitions 2/1073 dead transitions. [2021-03-24 22:42:22,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 1073 transitions, 51472 flow [2021-03-24 22:42:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:42:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:42:22,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:42:22,525 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:42:22,525 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:42:22,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:42:22,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:42:22,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:42:22,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:22,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:22,526 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:22,526 INFO L185 Difference]: Start difference. First operand has 491 places, 1062 transitions, 49058 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:42:22,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 1073 transitions, 51472 flow [2021-03-24 22:42:27,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1073 transitions, 50393 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-03-24 22:42:27,361 INFO L241 Difference]: Finished difference. Result has 493 places, 1060 transitions, 48929 flow [2021-03-24 22:42:27,362 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=47989, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=527, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48929, PETRI_PLACES=493, PETRI_TRANSITIONS=1060} [2021-03-24 22:42:27,362 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 449 predicate places. [2021-03-24 22:42:27,362 INFO L480 AbstractCegarLoop]: Abstraction has has 493 places, 1060 transitions, 48929 flow [2021-03-24 22:42:27,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:27,362 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:42:27,362 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:42:27,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-24 22:42:27,362 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:42:27,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:42:27,363 INFO L82 PathProgramCache]: Analyzing trace with hash -360982678, now seen corresponding path program 80 times [2021-03-24 22:42:27,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:42:27,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601160283] [2021-03-24 22:42:27,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:42:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:42:27,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:42:27,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:42:27,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:42:27,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:42:27,374 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:42:27,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:42:27,380 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:42:27,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:42:27,389 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:42:27,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:42:27,409 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:42:27,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:42:27,439 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:42:27,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:42:27,463 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:42:27,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:42:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:42:27,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601160283] [2021-03-24 22:42:27,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:42:27,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:42:27,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914926718] [2021-03-24 22:42:27,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:42:27,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:42:27,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:42:27,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:42:27,485 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:42:27,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1060 transitions, 48929 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:27,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:42:27,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:42:27,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:42:32,982 INFO L129 PetriNetUnfolder]: 523/9856 cut-off events. [2021-03-24 22:42:32,982 INFO L130 PetriNetUnfolder]: For 500134/513554 co-relation queries the response was YES. [2021-03-24 22:42:33,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83574 conditions, 9856 events. 523/9856 cut-off events. For 500134/513554 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 176366 event pairs, 523 based on Foata normal form. 74/9451 useless extension candidates. Maximal degree in co-relation 83399. Up to 1720 conditions per place. [2021-03-24 22:42:33,074 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 512 selfloop transitions, 541 changer transitions 2/1069 dead transitions. [2021-03-24 22:42:33,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1069 transitions, 51257 flow [2021-03-24 22:42:33,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:42:33,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:42:33,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:42:33,075 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:42:33,075 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:42:33,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:42:33,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:42:33,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:42:33,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:33,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:33,076 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:33,076 INFO L185 Difference]: Start difference. First operand has 493 places, 1060 transitions, 48929 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:42:33,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1069 transitions, 51257 flow [2021-03-24 22:42:37,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1069 transitions, 50407 flow, removed 21 selfloop flow, removed 5 redundant places. [2021-03-24 22:42:37,667 INFO L241 Difference]: Finished difference. Result has 497 places, 1062 transitions, 49352 flow [2021-03-24 22:42:37,668 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48089, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=537, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49352, PETRI_PLACES=497, PETRI_TRANSITIONS=1062} [2021-03-24 22:42:37,668 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 453 predicate places. [2021-03-24 22:42:37,668 INFO L480 AbstractCegarLoop]: Abstraction has has 497 places, 1062 transitions, 49352 flow [2021-03-24 22:42:37,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:37,668 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:42:37,668 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] [2021-03-24 22:42:37,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-24 22:42:37,668 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:42:37,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:42:37,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1814298980, now seen corresponding path program 81 times [2021-03-24 22:42:37,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:42:37,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075886580] [2021-03-24 22:42:37,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:42:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:42:37,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:42:37,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:42:37,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:42:37,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:42:37,690 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:42:37,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:42:37,696 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:42:37,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:42:37,705 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:42:37,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:42:37,726 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:42:37,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:42:37,755 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:42:37,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:42:37,778 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:42:37,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:42:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:42:37,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075886580] [2021-03-24 22:42:37,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:42:37,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:42:37,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896758149] [2021-03-24 22:42:37,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:42:37,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:42:37,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:42:37,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:42:37,800 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:42:37,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1062 transitions, 49352 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:37,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:42:37,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:42:37,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:42:42,576 INFO L129 PetriNetUnfolder]: 523/9848 cut-off events. [2021-03-24 22:42:42,577 INFO L130 PetriNetUnfolder]: For 503064/516484 co-relation queries the response was YES. [2021-03-24 22:42:42,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84081 conditions, 9848 events. 523/9848 cut-off events. For 503064/516484 co-relation queries the response was YES. Maximal size of possible extension queue 1549. Compared 176298 event pairs, 523 based on Foata normal form. 74/9443 useless extension candidates. Maximal degree in co-relation 83906. Up to 1720 conditions per place. [2021-03-24 22:42:42,672 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 512 selfloop transitions, 539 changer transitions 2/1067 dead transitions. [2021-03-24 22:42:42,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 1067 transitions, 51478 flow [2021-03-24 22:42:42,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:42:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:42:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:42:42,673 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:42:42,673 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:42:42,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:42:42,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:42:42,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:42:42,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:42,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:42,674 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:42,674 INFO L185 Difference]: Start difference. First operand has 497 places, 1062 transitions, 49352 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:42:42,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 1067 transitions, 51478 flow [2021-03-24 22:42:47,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 1067 transitions, 50480 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-03-24 22:42:47,322 INFO L241 Difference]: Finished difference. Result has 500 places, 1060 transitions, 49321 flow [2021-03-24 22:42:47,323 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48364, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=539, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49321, PETRI_PLACES=500, PETRI_TRANSITIONS=1060} [2021-03-24 22:42:47,323 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 456 predicate places. [2021-03-24 22:42:47,323 INFO L480 AbstractCegarLoop]: Abstraction has has 500 places, 1060 transitions, 49321 flow [2021-03-24 22:42:47,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:47,323 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:42:47,324 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] [2021-03-24 22:42:47,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-24 22:42:47,324 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:42:47,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:42:47,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1724076524, now seen corresponding path program 82 times [2021-03-24 22:42:47,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:42:47,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287111870] [2021-03-24 22:42:47,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:42:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:42:47,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:42:47,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:42:47,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:42:47,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:42:47,336 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:42:47,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:42:47,342 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:42:47,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:42:47,350 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:42:47,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:42:47,362 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:42:47,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:42:47,380 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:42:47,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:42:47,403 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:42:47,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:42:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:42:47,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287111870] [2021-03-24 22:42:47,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:42:47,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:42:47,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42517638] [2021-03-24 22:42:47,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:42:47,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:42:47,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:42:47,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:42:47,426 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:42:47,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 1060 transitions, 49321 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:47,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:42:47,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:42:47,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:42:52,614 INFO L129 PetriNetUnfolder]: 523/9840 cut-off events. [2021-03-24 22:42:52,614 INFO L130 PetriNetUnfolder]: For 501545/514965 co-relation queries the response was YES. [2021-03-24 22:42:52,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84138 conditions, 9840 events. 523/9840 cut-off events. For 501545/514965 co-relation queries the response was YES. Maximal size of possible extension queue 1547. Compared 176122 event pairs, 523 based on Foata normal form. 74/9435 useless extension candidates. Maximal degree in co-relation 83963. Up to 1720 conditions per place. [2021-03-24 22:42:52,704 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 497 selfloop transitions, 553 changer transitions 1/1065 dead transitions. [2021-03-24 22:42:52,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 1065 transitions, 51443 flow [2021-03-24 22:42:52,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:42:52,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:42:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:42:52,705 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:42:52,705 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:42:52,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:42:52,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:42:52,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:42:52,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:52,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:52,706 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:52,706 INFO L185 Difference]: Start difference. First operand has 500 places, 1060 transitions, 49321 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:42:52,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 1065 transitions, 51443 flow [2021-03-24 22:42:57,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 1065 transitions, 50376 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 22:42:57,448 INFO L241 Difference]: Finished difference. Result has 502 places, 1059 transitions, 49300 flow [2021-03-24 22:42:57,449 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48264, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=553, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49300, PETRI_PLACES=502, PETRI_TRANSITIONS=1059} [2021-03-24 22:42:57,449 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 458 predicate places. [2021-03-24 22:42:57,449 INFO L480 AbstractCegarLoop]: Abstraction has has 502 places, 1059 transitions, 49300 flow [2021-03-24 22:42:57,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:57,449 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:42:57,449 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] [2021-03-24 22:42:57,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-24 22:42:57,449 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:42:57,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:42:57,449 INFO L82 PathProgramCache]: Analyzing trace with hash 2110304440, now seen corresponding path program 83 times [2021-03-24 22:42:57,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:42:57,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974381959] [2021-03-24 22:42:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:42:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:42:57,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:42:57,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:42:57,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:42:57,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:42:57,493 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:42:57,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:42:57,498 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:42:57,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:42:57,508 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:42:57,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:42:57,523 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:42:57,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:42:57,554 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:42:57,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:42:57,575 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:42:57,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:42:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:42:57,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974381959] [2021-03-24 22:42:57,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:42:57,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:42:57,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071703326] [2021-03-24 22:42:57,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:42:57,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:42:57,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:42:57,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:42:57,597 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:42:57,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 1059 transitions, 49300 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:42:57,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:42:57,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:42:57,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:43:02,418 INFO L129 PetriNetUnfolder]: 523/9834 cut-off events. [2021-03-24 22:43:02,418 INFO L130 PetriNetUnfolder]: For 501144/514564 co-relation queries the response was YES. [2021-03-24 22:43:02,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84109 conditions, 9834 events. 523/9834 cut-off events. For 501144/514564 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 175830 event pairs, 523 based on Foata normal form. 74/9429 useless extension candidates. Maximal degree in co-relation 83934. Up to 1720 conditions per place. [2021-03-24 22:43:02,521 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 486 selfloop transitions, 562 changer transitions 2/1064 dead transitions. [2021-03-24 22:43:02,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 1064 transitions, 51420 flow [2021-03-24 22:43:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:43:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:43:02,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:43:02,522 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:43:02,522 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:43:02,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:43:02,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:43:02,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:43:02,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:02,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:02,523 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:02,523 INFO L185 Difference]: Start difference. First operand has 502 places, 1059 transitions, 49300 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:43:02,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 1064 transitions, 51420 flow [2021-03-24 22:43:07,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 1064 transitions, 50603 flow, removed 19 selfloop flow, removed 4 redundant places. [2021-03-24 22:43:07,520 INFO L241 Difference]: Finished difference. Result has 506 places, 1057 transitions, 49487 flow [2021-03-24 22:43:07,521 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48493, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1059, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=562, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49487, PETRI_PLACES=506, PETRI_TRANSITIONS=1057} [2021-03-24 22:43:07,521 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 462 predicate places. [2021-03-24 22:43:07,521 INFO L480 AbstractCegarLoop]: Abstraction has has 506 places, 1057 transitions, 49487 flow [2021-03-24 22:43:07,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:07,521 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:43:07,521 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] [2021-03-24 22:43:07,521 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-24 22:43:07,521 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:43:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:43:07,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1506881736, now seen corresponding path program 84 times [2021-03-24 22:43:07,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:43:07,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855936032] [2021-03-24 22:43:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:43:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:43:07,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:43:07,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:43:07,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:43:07,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:43:07,533 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:43:07,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:43:07,539 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:43:07,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:43:07,547 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:43:07,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:43:07,560 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:43:07,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:43:07,590 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:43:07,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:43:07,614 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:43:07,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:43:07,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:43:07,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855936032] [2021-03-24 22:43:07,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:43:07,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:43:07,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938408358] [2021-03-24 22:43:07,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:43:07,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:43:07,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:43:07,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:43:07,635 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:43:07,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 1057 transitions, 49487 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:07,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:43:07,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:43:07,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:43:12,649 INFO L129 PetriNetUnfolder]: 523/9827 cut-off events. [2021-03-24 22:43:12,650 INFO L130 PetriNetUnfolder]: For 501536/514956 co-relation queries the response was YES. [2021-03-24 22:43:12,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84588 conditions, 9827 events. 523/9827 cut-off events. For 501536/514956 co-relation queries the response was YES. Maximal size of possible extension queue 1545. Compared 175739 event pairs, 523 based on Foata normal form. 74/9422 useless extension candidates. Maximal degree in co-relation 84413. Up to 1720 conditions per place. [2021-03-24 22:43:12,739 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 487 selfloop transitions, 560 changer transitions 1/1062 dead transitions. [2021-03-24 22:43:12,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 1062 transitions, 51603 flow [2021-03-24 22:43:12,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:43:12,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:43:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:43:12,740 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:43:12,740 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:43:12,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:43:12,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:43:12,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:43:12,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:12,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:12,741 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:12,741 INFO L185 Difference]: Start difference. First operand has 506 places, 1057 transitions, 49487 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:43:12,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 1062 transitions, 51603 flow [2021-03-24 22:43:17,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 1062 transitions, 50439 flow, removed 43 selfloop flow, removed 6 redundant places. [2021-03-24 22:43:17,253 INFO L241 Difference]: Finished difference. Result has 508 places, 1056 transitions, 49378 flow [2021-03-24 22:43:17,254 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48333, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1057, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=560, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49378, PETRI_PLACES=508, PETRI_TRANSITIONS=1056} [2021-03-24 22:43:17,254 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 464 predicate places. [2021-03-24 22:43:17,254 INFO L480 AbstractCegarLoop]: Abstraction has has 508 places, 1056 transitions, 49378 flow [2021-03-24 22:43:17,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:17,254 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:43:17,254 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] [2021-03-24 22:43:17,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-24 22:43:17,254 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:43:17,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:43:17,255 INFO L82 PathProgramCache]: Analyzing trace with hash -104259412, now seen corresponding path program 85 times [2021-03-24 22:43:17,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:43:17,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572881776] [2021-03-24 22:43:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:43:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:43:17,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:43:17,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:43:17,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:43:17,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:43:17,266 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:43:17,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:43:17,272 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:43:17,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:43:17,280 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:43:17,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:43:17,292 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:43:17,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:43:17,310 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:43:17,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:43:17,333 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:43:17,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:43:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:43:17,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572881776] [2021-03-24 22:43:17,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:43:17,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:43:17,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932440041] [2021-03-24 22:43:17,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:43:17,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:43:17,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:43:17,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:43:17,356 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:43:17,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 1056 transitions, 49378 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:17,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:43:17,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:43:17,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:43:22,403 INFO L129 PetriNetUnfolder]: 523/9824 cut-off events. [2021-03-24 22:43:22,403 INFO L130 PetriNetUnfolder]: For 497281/510696 co-relation queries the response was YES. [2021-03-24 22:43:22,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84621 conditions, 9824 events. 523/9824 cut-off events. For 497281/510696 co-relation queries the response was YES. Maximal size of possible extension queue 1544. Compared 175585 event pairs, 523 based on Foata normal form. 72/9417 useless extension candidates. Maximal degree in co-relation 84447. Up to 1720 conditions per place. [2021-03-24 22:43:22,495 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 494 selfloop transitions, 551 changer transitions 2/1061 dead transitions. [2021-03-24 22:43:22,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 1061 transitions, 51492 flow [2021-03-24 22:43:22,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:43:22,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:43:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:43:22,496 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:43:22,496 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:43:22,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:43:22,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:43:22,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:43:22,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:22,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:22,497 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:22,497 INFO L185 Difference]: Start difference. First operand has 508 places, 1056 transitions, 49378 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:43:22,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 1061 transitions, 51492 flow [2021-03-24 22:43:27,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 1061 transitions, 50500 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 22:43:27,129 INFO L241 Difference]: Finished difference. Result has 511 places, 1054 transitions, 49368 flow [2021-03-24 22:43:27,130 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48396, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=551, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49368, PETRI_PLACES=511, PETRI_TRANSITIONS=1054} [2021-03-24 22:43:27,130 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 467 predicate places. [2021-03-24 22:43:27,130 INFO L480 AbstractCegarLoop]: Abstraction has has 511 places, 1054 transitions, 49368 flow [2021-03-24 22:43:27,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:27,130 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:43:27,131 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] [2021-03-24 22:43:27,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-24 22:43:27,131 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:43:27,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:43:27,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1801091880, now seen corresponding path program 86 times [2021-03-24 22:43:27,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:43:27,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551993461] [2021-03-24 22:43:27,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:43:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:43:27,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:43:27,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:43:27,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:43:27,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:43:27,143 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:43:27,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:43:27,148 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:43:27,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:43:27,157 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:43:27,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:43:27,169 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:43:27,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:43:27,188 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:43:27,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:43:27,212 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:43:27,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:43:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:43:27,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551993461] [2021-03-24 22:43:27,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:43:27,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:43:27,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129698336] [2021-03-24 22:43:27,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:43:27,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:43:27,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:43:27,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:43:27,234 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:43:27,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 1054 transitions, 49368 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:27,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:43:27,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:43:27,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:43:32,116 INFO L129 PetriNetUnfolder]: 523/9817 cut-off events. [2021-03-24 22:43:32,116 INFO L130 PetriNetUnfolder]: For 496850/510270 co-relation queries the response was YES. [2021-03-24 22:43:32,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84710 conditions, 9817 events. 523/9817 cut-off events. For 496850/510270 co-relation queries the response was YES. Maximal size of possible extension queue 1542. Compared 175520 event pairs, 523 based on Foata normal form. 74/9413 useless extension candidates. Maximal degree in co-relation 84536. Up to 1720 conditions per place. [2021-03-24 22:43:32,218 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 482 selfloop transitions, 561 changer transitions 2/1059 dead transitions. [2021-03-24 22:43:32,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 1059 transitions, 51478 flow [2021-03-24 22:43:32,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:43:32,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:43:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:43:32,219 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:43:32,219 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:43:32,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:43:32,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:43:32,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:43:32,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:32,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:32,220 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:32,220 INFO L185 Difference]: Start difference. First operand has 511 places, 1054 transitions, 49368 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:43:32,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 1059 transitions, 51478 flow [2021-03-24 22:43:36,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 1059 transitions, 50350 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 22:43:36,809 INFO L241 Difference]: Finished difference. Result has 512 places, 1052 transitions, 49249 flow [2021-03-24 22:43:36,810 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48250, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1054, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=561, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49249, PETRI_PLACES=512, PETRI_TRANSITIONS=1052} [2021-03-24 22:43:36,810 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 468 predicate places. [2021-03-24 22:43:36,810 INFO L480 AbstractCegarLoop]: Abstraction has has 512 places, 1052 transitions, 49249 flow [2021-03-24 22:43:36,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:36,810 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:43:36,810 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] [2021-03-24 22:43:36,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-24 22:43:36,810 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:43:36,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:43:36,811 INFO L82 PathProgramCache]: Analyzing trace with hash 2115163928, now seen corresponding path program 87 times [2021-03-24 22:43:36,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:43:36,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325050050] [2021-03-24 22:43:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:43:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:43:36,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:43:36,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:43:36,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:43:36,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:43:36,822 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:43:36,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:43:36,828 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:43:36,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:43:36,836 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:43:36,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:43:36,859 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-24 22:43:36,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 22:43:36,878 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:43:36,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:43:36,902 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:43:36,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:43:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:43:36,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325050050] [2021-03-24 22:43:36,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:43:36,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:43:36,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246270086] [2021-03-24 22:43:36,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:43:36,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:43:36,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:43:36,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:43:36,924 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:43:36,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 1052 transitions, 49249 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:36,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:43:36,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:43:36,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:43:41,837 INFO L129 PetriNetUnfolder]: 523/9799 cut-off events. [2021-03-24 22:43:41,837 INFO L130 PetriNetUnfolder]: For 493385/506805 co-relation queries the response was YES. [2021-03-24 22:43:41,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84430 conditions, 9799 events. 523/9799 cut-off events. For 493385/506805 co-relation queries the response was YES. Maximal size of possible extension queue 1540. Compared 175233 event pairs, 523 based on Foata normal form. 74/9397 useless extension candidates. Maximal degree in co-relation 84257. Up to 1720 conditions per place. [2021-03-24 22:43:41,938 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 487 selfloop transitions, 554 changer transitions 2/1057 dead transitions. [2021-03-24 22:43:41,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1057 transitions, 51355 flow [2021-03-24 22:43:41,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:43:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:43:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:43:41,939 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:43:41,939 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:43:41,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:43:41,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:43:41,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:43:41,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:41,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:41,940 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:41,940 INFO L185 Difference]: Start difference. First operand has 512 places, 1052 transitions, 49249 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:43:41,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1057 transitions, 51355 flow [2021-03-24 22:43:46,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 1057 transitions, 50245 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 22:43:46,710 INFO L241 Difference]: Finished difference. Result has 513 places, 1050 transitions, 49123 flow [2021-03-24 22:43:46,710 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48149, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1052, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=554, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49123, PETRI_PLACES=513, PETRI_TRANSITIONS=1050} [2021-03-24 22:43:46,710 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 469 predicate places. [2021-03-24 22:43:46,710 INFO L480 AbstractCegarLoop]: Abstraction has has 513 places, 1050 transitions, 49123 flow [2021-03-24 22:43:46,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:46,711 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:43:46,711 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] [2021-03-24 22:43:46,711 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-24 22:43:46,711 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:43:46,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:43:46,711 INFO L82 PathProgramCache]: Analyzing trace with hash -604319470, now seen corresponding path program 88 times [2021-03-24 22:43:46,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:43:46,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994147953] [2021-03-24 22:43:46,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:43:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:43:46,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:43:46,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:43:46,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:43:46,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:43:46,723 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:43:46,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:43:46,729 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:43:46,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:43:46,737 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:43:46,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:43:46,761 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:43:46,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:43:46,791 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:43:46,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:43:46,815 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:43:46,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:43:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:43:46,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994147953] [2021-03-24 22:43:46,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:43:46,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:43:46,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221968961] [2021-03-24 22:43:46,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:43:46,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:43:46,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:43:46,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:43:46,837 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:43:46,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 1050 transitions, 49123 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:46,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:43:46,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:43:46,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:43:47,731 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-03-24 22:43:51,743 INFO L129 PetriNetUnfolder]: 523/9789 cut-off events. [2021-03-24 22:43:51,743 INFO L130 PetriNetUnfolder]: For 491891/505311 co-relation queries the response was YES. [2021-03-24 22:43:51,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84313 conditions, 9789 events. 523/9789 cut-off events. For 491891/505311 co-relation queries the response was YES. Maximal size of possible extension queue 1538. Compared 174864 event pairs, 523 based on Foata normal form. 74/9388 useless extension candidates. Maximal degree in co-relation 84141. Up to 1720 conditions per place. [2021-03-24 22:43:51,832 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 495 selfloop transitions, 544 changer transitions 2/1055 dead transitions. [2021-03-24 22:43:51,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 1055 transitions, 51225 flow [2021-03-24 22:43:51,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:43:51,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:43:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:43:51,833 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:43:51,833 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:43:51,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:43:51,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:43:51,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:43:51,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:51,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:51,834 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:51,834 INFO L185 Difference]: Start difference. First operand has 513 places, 1050 transitions, 49123 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:43:51,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 1055 transitions, 51225 flow [2021-03-24 22:43:56,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 1055 transitions, 50142 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 22:43:56,358 INFO L241 Difference]: Finished difference. Result has 515 places, 1048 transitions, 49001 flow [2021-03-24 22:43:56,358 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48050, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1050, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=544, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49001, PETRI_PLACES=515, PETRI_TRANSITIONS=1048} [2021-03-24 22:43:56,358 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 471 predicate places. [2021-03-24 22:43:56,359 INFO L480 AbstractCegarLoop]: Abstraction has has 515 places, 1048 transitions, 49001 flow [2021-03-24 22:43:56,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:56,359 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:43:56,359 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] [2021-03-24 22:43:56,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-24 22:43:56,359 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:43:56,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:43:56,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1189967436, now seen corresponding path program 89 times [2021-03-24 22:43:56,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:43:56,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909443473] [2021-03-24 22:43:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:43:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:43:56,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:43:56,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:43:56,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:43:56,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:43:56,386 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:43:56,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:43:56,392 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:43:56,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:43:56,402 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:43:56,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:43:56,427 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:43:56,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:43:56,460 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:43:56,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:43:56,551 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:43:56,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:43:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:43:56,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909443473] [2021-03-24 22:43:56,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:43:56,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:43:56,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246513525] [2021-03-24 22:43:56,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:43:56,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:43:56,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:43:56,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:43:56,578 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:43:56,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 1048 transitions, 49001 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:43:56,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:43:56,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:43:56,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:44:01,564 INFO L129 PetriNetUnfolder]: 523/9781 cut-off events. [2021-03-24 22:44:01,564 INFO L130 PetriNetUnfolder]: For 491192/504612 co-relation queries the response was YES. [2021-03-24 22:44:01,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84262 conditions, 9781 events. 523/9781 cut-off events. For 491192/504612 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 174735 event pairs, 523 based on Foata normal form. 74/9380 useless extension candidates. Maximal degree in co-relation 84090. Up to 1720 conditions per place. [2021-03-24 22:44:01,661 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 496 selfloop transitions, 541 changer transitions 2/1053 dead transitions. [2021-03-24 22:44:01,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 1053 transitions, 51099 flow [2021-03-24 22:44:01,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:44:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:44:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:44:01,662 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:44:01,663 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:44:01,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:44:01,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:44:01,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:44:01,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:01,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:01,664 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:01,664 INFO L185 Difference]: Start difference. First operand has 515 places, 1048 transitions, 49001 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:44:01,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 1053 transitions, 51099 flow [2021-03-24 22:44:06,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 1053 transitions, 50025 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 22:44:06,386 INFO L241 Difference]: Finished difference. Result has 517 places, 1046 transitions, 48882 flow [2021-03-24 22:44:06,386 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=47937, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1048, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=48882, PETRI_PLACES=517, PETRI_TRANSITIONS=1046} [2021-03-24 22:44:06,387 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 473 predicate places. [2021-03-24 22:44:06,387 INFO L480 AbstractCegarLoop]: Abstraction has has 517 places, 1046 transitions, 48882 flow [2021-03-24 22:44:06,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:06,387 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:44:06,387 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] [2021-03-24 22:44:06,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-24 22:44:06,387 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:44:06,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:44:06,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1278821634, now seen corresponding path program 90 times [2021-03-24 22:44:06,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:44:06,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078994271] [2021-03-24 22:44:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:44:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:44:06,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:44:06,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:44:06,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:44:06,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:44:06,398 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:44:06,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:44:06,414 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:44:06,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:44:06,424 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:44:06,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:44:06,448 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:44:06,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:44:06,479 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:44:06,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:44:06,500 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:44:06,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:44:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:44:06,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078994271] [2021-03-24 22:44:06,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:44:06,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:44:06,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420849090] [2021-03-24 22:44:06,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:44:06,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:44:06,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:44:06,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:44:06,522 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:44:06,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 1046 transitions, 48882 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:06,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:44:06,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:44:06,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:44:11,438 INFO L129 PetriNetUnfolder]: 523/9773 cut-off events. [2021-03-24 22:44:11,438 INFO L130 PetriNetUnfolder]: For 490402/503817 co-relation queries the response was YES. [2021-03-24 22:44:11,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84207 conditions, 9773 events. 523/9773 cut-off events. For 490402/503817 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 174540 event pairs, 523 based on Foata normal form. 72/9370 useless extension candidates. Maximal degree in co-relation 84035. Up to 1720 conditions per place. [2021-03-24 22:44:11,524 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 498 selfloop transitions, 538 changer transitions 1/1051 dead transitions. [2021-03-24 22:44:11,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 1051 transitions, 50976 flow [2021-03-24 22:44:11,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:44:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:44:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:44:11,525 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:44:11,525 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:44:11,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:44:11,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:44:11,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:44:11,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:11,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:11,527 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:11,527 INFO L185 Difference]: Start difference. First operand has 517 places, 1046 transitions, 48882 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:44:11,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 1051 transitions, 50976 flow [2021-03-24 22:44:16,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 1051 transitions, 50358 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-24 22:44:16,148 INFO L241 Difference]: Finished difference. Result has 521 places, 1045 transitions, 49268 flow [2021-03-24 22:44:16,149 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48274, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49268, PETRI_PLACES=521, PETRI_TRANSITIONS=1045} [2021-03-24 22:44:16,149 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 477 predicate places. [2021-03-24 22:44:16,149 INFO L480 AbstractCegarLoop]: Abstraction has has 521 places, 1045 transitions, 49268 flow [2021-03-24 22:44:16,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:16,149 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:44:16,149 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] [2021-03-24 22:44:16,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-24 22:44:16,149 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:44:16,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:44:16,149 INFO L82 PathProgramCache]: Analyzing trace with hash -378235580, now seen corresponding path program 91 times [2021-03-24 22:44:16,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:44:16,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414649946] [2021-03-24 22:44:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:44:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:44:16,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:44:16,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:44:16,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:44:16,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:44:16,160 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:44:16,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:44:16,166 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:44:16,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:44:16,174 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:44:16,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:44:16,186 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:44:16,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:44:16,217 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:44:16,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:44:16,241 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:44:16,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:44:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:44:16,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414649946] [2021-03-24 22:44:16,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:44:16,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:44:16,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029093962] [2021-03-24 22:44:16,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:44:16,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:44:16,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:44:16,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:44:16,264 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:44:16,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 1045 transitions, 49268 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:16,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:44:16,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:44:16,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:44:21,110 INFO L129 PetriNetUnfolder]: 523/9766 cut-off events. [2021-03-24 22:44:21,110 INFO L130 PetriNetUnfolder]: For 495516/508936 co-relation queries the response was YES. [2021-03-24 22:44:21,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84641 conditions, 9766 events. 523/9766 cut-off events. For 495516/508936 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 174460 event pairs, 523 based on Foata normal form. 74/9365 useless extension candidates. Maximal degree in co-relation 84469. Up to 1720 conditions per place. [2021-03-24 22:44:21,206 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 518 selfloop transitions, 521 changer transitions 1/1054 dead transitions. [2021-03-24 22:44:21,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 1054 transitions, 51560 flow [2021-03-24 22:44:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:44:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:44:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:44:21,207 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:44:21,207 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:44:21,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:44:21,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:44:21,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:44:21,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:21,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:21,208 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:21,208 INFO L185 Difference]: Start difference. First operand has 521 places, 1045 transitions, 49268 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:44:21,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 1054 transitions, 51560 flow [2021-03-24 22:44:26,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 1054 transitions, 50481 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 22:44:26,040 INFO L241 Difference]: Finished difference. Result has 524 places, 1048 transitions, 49440 flow [2021-03-24 22:44:26,040 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48207, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=517, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49440, PETRI_PLACES=524, PETRI_TRANSITIONS=1048} [2021-03-24 22:44:26,040 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 480 predicate places. [2021-03-24 22:44:26,040 INFO L480 AbstractCegarLoop]: Abstraction has has 524 places, 1048 transitions, 49440 flow [2021-03-24 22:44:26,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:26,041 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:44:26,041 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] [2021-03-24 22:44:26,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-24 22:44:26,041 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:44:26,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:44:26,041 INFO L82 PathProgramCache]: Analyzing trace with hash -806416598, now seen corresponding path program 92 times [2021-03-24 22:44:26,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:44:26,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103640249] [2021-03-24 22:44:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:44:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:44:26,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:44:26,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:44:26,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:44:26,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:44:26,052 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:44:26,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:44:26,057 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:44:26,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:44:26,066 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:44:26,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:44:26,078 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:44:26,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:44:26,108 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:44:26,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:44:26,133 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:44:26,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:44:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:44:26,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103640249] [2021-03-24 22:44:26,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:44:26,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:44:26,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346256129] [2021-03-24 22:44:26,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:44:26,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:44:26,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:44:26,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:44:26,155 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:44:26,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 1048 transitions, 49440 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:26,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:44:26,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:44:26,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:44:31,154 INFO L129 PetriNetUnfolder]: 523/9759 cut-off events. [2021-03-24 22:44:31,154 INFO L130 PetriNetUnfolder]: For 497982/511402 co-relation queries the response was YES. [2021-03-24 22:44:31,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84649 conditions, 9759 events. 523/9759 cut-off events. For 497982/511402 co-relation queries the response was YES. Maximal size of possible extension queue 1532. Compared 174257 event pairs, 523 based on Foata normal form. 74/9358 useless extension candidates. Maximal degree in co-relation 84476. Up to 1720 conditions per place. [2021-03-24 22:44:31,244 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 514 selfloop transitions, 523 changer transitions 2/1053 dead transitions. [2021-03-24 22:44:31,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1053 transitions, 51538 flow [2021-03-24 22:44:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:44:31,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:44:31,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:44:31,245 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:44:31,245 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:44:31,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:44:31,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:44:31,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:44:31,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:31,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:31,246 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:31,246 INFO L185 Difference]: Start difference. First operand has 524 places, 1048 transitions, 49440 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:44:31,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1053 transitions, 51538 flow [2021-03-24 22:44:35,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 1053 transitions, 50562 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-03-24 22:44:35,980 INFO L241 Difference]: Finished difference. Result has 527 places, 1046 transitions, 49388 flow [2021-03-24 22:44:35,981 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48474, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1048, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=523, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49388, PETRI_PLACES=527, PETRI_TRANSITIONS=1046} [2021-03-24 22:44:35,981 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 483 predicate places. [2021-03-24 22:44:35,981 INFO L480 AbstractCegarLoop]: Abstraction has has 527 places, 1046 transitions, 49388 flow [2021-03-24 22:44:35,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:35,981 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:44:35,981 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] [2021-03-24 22:44:35,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-24 22:44:35,981 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:44:35,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:44:35,982 INFO L82 PathProgramCache]: Analyzing trace with hash -462220208, now seen corresponding path program 93 times [2021-03-24 22:44:35,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:44:35,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671295340] [2021-03-24 22:44:35,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:44:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:44:35,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:44:35,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:44:35,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:44:35,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:44:36,001 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:44:36,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:44:36,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:44:36,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:44:36,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:44:36,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:44:36,037 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:44:36,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:44:36,054 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:44:36,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:44:36,075 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:44:36,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:44:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:44:36,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671295340] [2021-03-24 22:44:36,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:44:36,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:44:36,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042339609] [2021-03-24 22:44:36,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:44:36,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:44:36,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:44:36,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:44:36,097 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:44:36,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 1046 transitions, 49388 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:36,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:44:36,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:44:36,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:44:41,087 INFO L129 PetriNetUnfolder]: 523/9751 cut-off events. [2021-03-24 22:44:41,087 INFO L130 PetriNetUnfolder]: For 497171/510591 co-relation queries the response was YES. [2021-03-24 22:44:41,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84710 conditions, 9751 events. 523/9751 cut-off events. For 497171/510591 co-relation queries the response was YES. Maximal size of possible extension queue 1531. Compared 174077 event pairs, 523 based on Foata normal form. 74/9350 useless extension candidates. Maximal degree in co-relation 84537. Up to 1720 conditions per place. [2021-03-24 22:44:41,185 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 521 selfloop transitions, 515 changer transitions 1/1051 dead transitions. [2021-03-24 22:44:41,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 1051 transitions, 51482 flow [2021-03-24 22:44:41,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:44:41,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:44:41,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:44:41,186 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:44:41,186 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:44:41,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:44:41,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:44:41,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:44:41,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:41,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:41,187 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:41,187 INFO L185 Difference]: Start difference. First operand has 527 places, 1046 transitions, 49388 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:44:41,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 1051 transitions, 51482 flow [2021-03-24 22:44:46,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 1051 transitions, 50443 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-24 22:44:46,166 INFO L241 Difference]: Finished difference. Result has 529 places, 1045 transitions, 49317 flow [2021-03-24 22:44:46,167 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48359, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=515, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=49317, PETRI_PLACES=529, PETRI_TRANSITIONS=1045} [2021-03-24 22:44:46,167 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 485 predicate places. [2021-03-24 22:44:46,167 INFO L480 AbstractCegarLoop]: Abstraction has has 529 places, 1045 transitions, 49317 flow [2021-03-24 22:44:46,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:46,167 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:44:46,167 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] [2021-03-24 22:44:46,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-24 22:44:46,167 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:44:46,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:44:46,167 INFO L82 PathProgramCache]: Analyzing trace with hash 38385574, now seen corresponding path program 94 times [2021-03-24 22:44:46,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:44:46,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80187779] [2021-03-24 22:44:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:44:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:44:46,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:44:46,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:44:46,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:44:46,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:44:46,178 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:44:46,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:44:46,184 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:44:46,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:44:46,193 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:44:46,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:44:46,205 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:44:46,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:44:46,222 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:44:46,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:44:46,246 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:44:46,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:44:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:44:46,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80187779] [2021-03-24 22:44:46,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:44:46,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:44:46,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195002215] [2021-03-24 22:44:46,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:44:46,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:44:46,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:44:46,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:44:46,269 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:44:46,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 1045 transitions, 49317 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:46,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:44:46,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:44:46,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:44:47,899 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-24 22:44:51,326 INFO L129 PetriNetUnfolder]: 523/9744 cut-off events. [2021-03-24 22:44:51,326 INFO L130 PetriNetUnfolder]: For 496784/510204 co-relation queries the response was YES. [2021-03-24 22:44:51,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84686 conditions, 9744 events. 523/9744 cut-off events. For 496784/510204 co-relation queries the response was YES. Maximal size of possible extension queue 1530. Compared 173908 event pairs, 523 based on Foata normal form. 74/9343 useless extension candidates. Maximal degree in co-relation 84513. Up to 1707 conditions per place. [2021-03-24 22:44:51,414 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 556 selfloop transitions, 519 changer transitions 2/1091 dead transitions. [2021-03-24 22:44:51,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 1091 transitions, 53390 flow [2021-03-24 22:44:51,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:44:51,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:44:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:44:51,415 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:44:51,415 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:44:51,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:44:51,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:44:51,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:44:51,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:51,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:51,416 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:51,416 INFO L185 Difference]: Start difference. First operand has 529 places, 1045 transitions, 49317 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:44:51,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 1091 transitions, 53390 flow [2021-03-24 22:44:55,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1091 transitions, 52325 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 22:44:55,857 INFO L241 Difference]: Finished difference. Result has 533 places, 1068 transitions, 50622 flow [2021-03-24 22:44:55,858 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=48300, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=495, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50622, PETRI_PLACES=533, PETRI_TRANSITIONS=1068} [2021-03-24 22:44:55,858 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 489 predicate places. [2021-03-24 22:44:55,858 INFO L480 AbstractCegarLoop]: Abstraction has has 533 places, 1068 transitions, 50622 flow [2021-03-24 22:44:55,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:55,858 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:44:55,858 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] [2021-03-24 22:44:55,858 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-24 22:44:55,858 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:44:55,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:44:55,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1916406046, now seen corresponding path program 95 times [2021-03-24 22:44:55,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:44:55,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693438761] [2021-03-24 22:44:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:44:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:44:55,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:44:55,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:44:55,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:44:55,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:44:55,869 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:44:55,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:44:55,875 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:44:55,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:44:55,883 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:44:55,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:44:55,895 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:44:55,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:44:55,923 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:44:55,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:44:55,948 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:44:55,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:44:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:44:55,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693438761] [2021-03-24 22:44:55,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:44:55,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:44:55,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195134540] [2021-03-24 22:44:55,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:44:55,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:44:55,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:44:55,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:44:55,970 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:44:55,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 1068 transitions, 50622 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:44:55,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:44:55,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:44:55,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:45:01,004 INFO L129 PetriNetUnfolder]: 523/9736 cut-off events. [2021-03-24 22:45:01,004 INFO L130 PetriNetUnfolder]: For 507721/521147 co-relation queries the response was YES. [2021-03-24 22:45:01,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84968 conditions, 9736 events. 523/9736 cut-off events. For 507721/521147 co-relation queries the response was YES. Maximal size of possible extension queue 1528. Compared 173702 event pairs, 523 based on Foata normal form. 74/9305 useless extension candidates. Maximal degree in co-relation 84793. Up to 1707 conditions per place. [2021-03-24 22:45:01,103 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 529 selfloop transitions, 528 changer transitions 2/1073 dead transitions. [2021-03-24 22:45:01,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 1073 transitions, 52760 flow [2021-03-24 22:45:01,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:45:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:45:01,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:45:01,104 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:45:01,104 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:45:01,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:45:01,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:45:01,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:45:01,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:01,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:01,105 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:01,105 INFO L185 Difference]: Start difference. First operand has 533 places, 1068 transitions, 50622 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:45:01,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 1073 transitions, 52760 flow [2021-03-24 22:45:05,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 1073 transitions, 51731 flow, removed 48 selfloop flow, removed 6 redundant places. [2021-03-24 22:45:05,960 INFO L241 Difference]: Finished difference. Result has 535 places, 1066 transitions, 50530 flow [2021-03-24 22:45:05,961 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49603, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1068, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50530, PETRI_PLACES=535, PETRI_TRANSITIONS=1066} [2021-03-24 22:45:05,961 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 491 predicate places. [2021-03-24 22:45:05,961 INFO L480 AbstractCegarLoop]: Abstraction has has 535 places, 1066 transitions, 50530 flow [2021-03-24 22:45:05,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:05,961 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:45:05,961 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] [2021-03-24 22:45:05,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-24 22:45:05,961 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:45:05,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:45:05,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1187984936, now seen corresponding path program 96 times [2021-03-24 22:45:05,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:45:05,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208569838] [2021-03-24 22:45:05,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:45:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:45:05,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:45:05,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:45:05,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:45:05,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:45:05,973 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:45:05,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:45:05,978 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:45:05,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:45:05,987 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:45:05,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:45:05,999 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:45:05,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:45:06,017 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:45:06,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:45:06,041 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:45:06,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:45:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:45:06,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208569838] [2021-03-24 22:45:06,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:45:06,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:45:06,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605313368] [2021-03-24 22:45:06,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:45:06,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:45:06,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:45:06,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:45:06,064 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:45:06,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 1066 transitions, 50530 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:06,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:45:06,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:45:06,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:45:11,274 INFO L129 PetriNetUnfolder]: 523/9728 cut-off events. [2021-03-24 22:45:11,274 INFO L130 PetriNetUnfolder]: For 505423/518844 co-relation queries the response was YES. [2021-03-24 22:45:11,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85045 conditions, 9728 events. 523/9728 cut-off events. For 505423/518844 co-relation queries the response was YES. Maximal size of possible extension queue 1526. Compared 173539 event pairs, 523 based on Foata normal form. 72/9310 useless extension candidates. Maximal degree in co-relation 84870. Up to 1707 conditions per place. [2021-03-24 22:45:11,374 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 559 selfloop transitions, 513 changer transitions 1/1087 dead transitions. [2021-03-24 22:45:11,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 1087 transitions, 53396 flow [2021-03-24 22:45:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:45:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:45:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:45:11,375 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:45:11,375 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:45:11,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:45:11,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:45:11,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:45:11,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:11,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:11,376 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:11,376 INFO L185 Difference]: Start difference. First operand has 535 places, 1066 transitions, 50530 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:45:11,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 1087 transitions, 53396 flow [2021-03-24 22:45:16,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 1087 transitions, 52321 flow, removed 25 selfloop flow, removed 8 redundant places. [2021-03-24 22:45:16,295 INFO L241 Difference]: Finished difference. Result has 536 places, 1073 transitions, 50897 flow [2021-03-24 22:45:16,296 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49469, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50897, PETRI_PLACES=536, PETRI_TRANSITIONS=1073} [2021-03-24 22:45:16,296 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 492 predicate places. [2021-03-24 22:45:16,296 INFO L480 AbstractCegarLoop]: Abstraction has has 536 places, 1073 transitions, 50897 flow [2021-03-24 22:45:16,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:16,296 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:45:16,296 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] [2021-03-24 22:45:16,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-24 22:45:16,296 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:45:16,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:45:16,296 INFO L82 PathProgramCache]: Analyzing trace with hash 926716392, now seen corresponding path program 97 times [2021-03-24 22:45:16,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:45:16,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522613637] [2021-03-24 22:45:16,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:45:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:45:16,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:45:16,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:45:16,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:45:16,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:45:16,307 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:45:16,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:45:16,313 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:45:16,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:45:16,322 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:45:16,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:45:16,334 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:45:16,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:45:16,352 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:45:16,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:45:16,376 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:45:16,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:45:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:45:16,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522613637] [2021-03-24 22:45:16,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:45:16,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:45:16,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72921915] [2021-03-24 22:45:16,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:45:16,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:45:16,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:45:16,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:45:16,399 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:45:16,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 1073 transitions, 50897 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:16,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:45:16,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:45:16,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:45:21,569 INFO L129 PetriNetUnfolder]: 523/9721 cut-off events. [2021-03-24 22:45:21,569 INFO L130 PetriNetUnfolder]: For 503883/517304 co-relation queries the response was YES. [2021-03-24 22:45:21,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85142 conditions, 9721 events. 523/9721 cut-off events. For 503883/517304 co-relation queries the response was YES. Maximal size of possible extension queue 1525. Compared 173463 event pairs, 523 based on Foata normal form. 72/9309 useless extension candidates. Maximal degree in co-relation 84969. Up to 1707 conditions per place. [2021-03-24 22:45:21,681 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 559 selfloop transitions, 511 changer transitions 2/1086 dead transitions. [2021-03-24 22:45:21,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 1086 transitions, 53397 flow [2021-03-24 22:45:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:45:21,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:45:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:45:21,683 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:45:21,683 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:45:21,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:45:21,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:45:21,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:45:21,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:21,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:21,684 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:21,684 INFO L185 Difference]: Start difference. First operand has 536 places, 1073 transitions, 50897 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:45:21,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 1086 transitions, 53397 flow [2021-03-24 22:45:27,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 1086 transitions, 52097 flow, removed 12 selfloop flow, removed 7 redundant places. [2021-03-24 22:45:27,476 INFO L241 Difference]: Finished difference. Result has 538 places, 1073 transitions, 50635 flow [2021-03-24 22:45:27,476 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49607, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50635, PETRI_PLACES=538, PETRI_TRANSITIONS=1073} [2021-03-24 22:45:27,476 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 494 predicate places. [2021-03-24 22:45:27,477 INFO L480 AbstractCegarLoop]: Abstraction has has 538 places, 1073 transitions, 50635 flow [2021-03-24 22:45:27,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:27,477 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:45:27,477 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] [2021-03-24 22:45:27,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-24 22:45:27,477 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:45:27,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:45:27,477 INFO L82 PathProgramCache]: Analyzing trace with hash -156220312, now seen corresponding path program 98 times [2021-03-24 22:45:27,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:45:27,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283192073] [2021-03-24 22:45:27,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:45:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:45:27,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:45:27,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:45:27,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:45:27,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:45:27,510 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:45:27,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:45:27,515 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:45:27,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:45:27,524 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:45:27,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:45:27,538 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:45:27,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:45:27,567 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:45:27,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:45:27,593 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:45:27,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:45:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:45:27,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283192073] [2021-03-24 22:45:27,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:45:27,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:45:27,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452812165] [2021-03-24 22:45:27,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:45:27,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:45:27,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:45:27,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:45:27,617 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:45:27,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 1073 transitions, 50635 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:27,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:45:27,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:45:27,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:45:33,193 INFO L129 PetriNetUnfolder]: 523/9713 cut-off events. [2021-03-24 22:45:33,193 INFO L130 PetriNetUnfolder]: For 497874/511294 co-relation queries the response was YES. [2021-03-24 22:45:33,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84903 conditions, 9713 events. 523/9713 cut-off events. For 497874/511294 co-relation queries the response was YES. Maximal size of possible extension queue 1523. Compared 173279 event pairs, 523 based on Foata normal form. 74/9297 useless extension candidates. Maximal degree in co-relation 84730. Up to 1707 conditions per place. [2021-03-24 22:45:33,327 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 535 selfloop transitions, 527 changer transitions 2/1078 dead transitions. [2021-03-24 22:45:33,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 1078 transitions, 52783 flow [2021-03-24 22:45:33,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:45:33,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:45:33,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:45:33,329 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:45:33,329 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:45:33,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:45:33,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:45:33,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:45:33,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:33,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:33,330 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:33,330 INFO L185 Difference]: Start difference. First operand has 538 places, 1073 transitions, 50635 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:45:33,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 1078 transitions, 52783 flow [2021-03-24 22:45:38,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 1078 transitions, 51770 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 22:45:38,911 INFO L241 Difference]: Finished difference. Result has 540 places, 1071 transitions, 50560 flow [2021-03-24 22:45:38,912 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49632, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=527, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50560, PETRI_PLACES=540, PETRI_TRANSITIONS=1071} [2021-03-24 22:45:38,912 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 496 predicate places. [2021-03-24 22:45:38,912 INFO L480 AbstractCegarLoop]: Abstraction has has 540 places, 1071 transitions, 50560 flow [2021-03-24 22:45:38,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:38,912 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:45:38,913 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] [2021-03-24 22:45:38,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-24 22:45:38,913 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:45:38,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:45:38,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1626326288, now seen corresponding path program 99 times [2021-03-24 22:45:38,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:45:38,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407740201] [2021-03-24 22:45:38,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:45:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:45:38,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:45:38,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:45:38,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:45:38,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:45:38,930 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:45:38,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:45:38,937 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:45:38,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:45:38,946 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:45:38,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:45:38,959 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:45:38,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:45:38,976 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:45:38,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:45:39,025 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:45:39,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:45:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:45:39,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407740201] [2021-03-24 22:45:39,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:45:39,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:45:39,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591722173] [2021-03-24 22:45:39,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:45:39,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:45:39,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:45:39,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:45:39,050 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:45:39,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 1071 transitions, 50560 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:39,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:45:39,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:45:39,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:45:44,154 INFO L129 PetriNetUnfolder]: 523/9705 cut-off events. [2021-03-24 22:45:44,155 INFO L130 PetriNetUnfolder]: For 497193/510613 co-relation queries the response was YES. [2021-03-24 22:45:44,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84866 conditions, 9705 events. 523/9705 cut-off events. For 497193/510613 co-relation queries the response was YES. Maximal size of possible extension queue 1522. Compared 173072 event pairs, 523 based on Foata normal form. 74/9295 useless extension candidates. Maximal degree in co-relation 84693. Up to 1707 conditions per place. [2021-03-24 22:45:44,249 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 537 selfloop transitions, 524 changer transitions 1/1076 dead transitions. [2021-03-24 22:45:44,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 1076 transitions, 52704 flow [2021-03-24 22:45:44,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:45:44,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:45:44,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:45:44,250 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:45:44,250 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:45:44,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:45:44,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:45:44,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:45:44,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:44,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:44,251 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:44,251 INFO L185 Difference]: Start difference. First operand has 540 places, 1071 transitions, 50560 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:45:44,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 1076 transitions, 52704 flow [2021-03-24 22:45:49,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 1076 transitions, 51937 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 22:45:49,226 INFO L241 Difference]: Finished difference. Result has 544 places, 1070 transitions, 50782 flow [2021-03-24 22:45:49,226 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49803, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50782, PETRI_PLACES=544, PETRI_TRANSITIONS=1070} [2021-03-24 22:45:49,226 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 500 predicate places. [2021-03-24 22:45:49,226 INFO L480 AbstractCegarLoop]: Abstraction has has 544 places, 1070 transitions, 50782 flow [2021-03-24 22:45:49,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:49,227 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:45:49,227 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] [2021-03-24 22:45:49,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-24 22:45:49,227 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:45:49,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:45:49,227 INFO L82 PathProgramCache]: Analyzing trace with hash 545601504, now seen corresponding path program 100 times [2021-03-24 22:45:49,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:45:49,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185368384] [2021-03-24 22:45:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:45:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:45:49,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:45:49,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:45:49,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:45:49,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:45:49,238 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:45:49,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:45:49,244 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:45:49,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:45:49,252 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:45:49,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:45:49,268 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:45:49,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:45:49,286 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:45:49,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:45:49,311 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:45:49,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:45:49,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:45:49,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185368384] [2021-03-24 22:45:49,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:45:49,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:45:49,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339869079] [2021-03-24 22:45:49,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:45:49,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:45:49,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:45:49,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:45:49,357 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:45:49,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 1070 transitions, 50782 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:49,357 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:45:49,357 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:45:49,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:45:54,346 INFO L129 PetriNetUnfolder]: 523/9698 cut-off events. [2021-03-24 22:45:54,346 INFO L130 PetriNetUnfolder]: For 498591/512011 co-relation queries the response was YES. [2021-03-24 22:45:54,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85398 conditions, 9698 events. 523/9698 cut-off events. For 498591/512011 co-relation queries the response was YES. Maximal size of possible extension queue 1521. Compared 172954 event pairs, 523 based on Foata normal form. 74/9288 useless extension candidates. Maximal degree in co-relation 85225. Up to 1707 conditions per place. [2021-03-24 22:45:54,443 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 552 selfloop transitions, 513 changer transitions 2/1081 dead transitions. [2021-03-24 22:45:54,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 1081 transitions, 53178 flow [2021-03-24 22:45:54,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:45:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:45:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:45:54,444 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:45:54,444 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:45:54,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:45:54,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:45:54,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:45:54,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:54,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:54,445 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:54,445 INFO L185 Difference]: Start difference. First operand has 544 places, 1070 transitions, 50782 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:45:54,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 1081 transitions, 53178 flow [2021-03-24 22:45:59,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 1081 transitions, 52142 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 22:45:59,243 INFO L241 Difference]: Finished difference. Result has 547 places, 1074 transitions, 50999 flow [2021-03-24 22:45:59,244 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49756, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=507, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50999, PETRI_PLACES=547, PETRI_TRANSITIONS=1074} [2021-03-24 22:45:59,244 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 503 predicate places. [2021-03-24 22:45:59,244 INFO L480 AbstractCegarLoop]: Abstraction has has 547 places, 1074 transitions, 50999 flow [2021-03-24 22:45:59,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:59,244 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:45:59,244 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] [2021-03-24 22:45:59,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-24 22:45:59,244 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:45:59,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:45:59,244 INFO L82 PathProgramCache]: Analyzing trace with hash -2106915522, now seen corresponding path program 101 times [2021-03-24 22:45:59,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:45:59,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284110278] [2021-03-24 22:45:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:45:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:45:59,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:45:59,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:45:59,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:45:59,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:45:59,255 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:45:59,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:45:59,261 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:45:59,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:45:59,269 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:45:59,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:45:59,282 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:45:59,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:45:59,298 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:45:59,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:45:59,324 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:45:59,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:45:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:45:59,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284110278] [2021-03-24 22:45:59,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:45:59,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:45:59,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987819272] [2021-03-24 22:45:59,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:45:59,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:45:59,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:45:59,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:45:59,345 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:45:59,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 1074 transitions, 50999 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:45:59,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:45:59,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:45:59,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:46:04,237 INFO L129 PetriNetUnfolder]: 523/9691 cut-off events. [2021-03-24 22:46:04,238 INFO L130 PetriNetUnfolder]: For 501335/514755 co-relation queries the response was YES. [2021-03-24 22:46:04,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85382 conditions, 9691 events. 523/9691 cut-off events. For 501335/514755 co-relation queries the response was YES. Maximal size of possible extension queue 1520. Compared 172812 event pairs, 523 based on Foata normal form. 74/9276 useless extension candidates. Maximal degree in co-relation 85208. Up to 1707 conditions per place. [2021-03-24 22:46:04,606 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 551 selfloop transitions, 513 changer transitions 1/1079 dead transitions. [2021-03-24 22:46:04,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 1079 transitions, 53149 flow [2021-03-24 22:46:04,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:46:04,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:46:04,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:46:04,607 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:46:04,607 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:46:04,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:46:04,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:46:04,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:46:04,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:04,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:04,608 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:04,608 INFO L185 Difference]: Start difference. First operand has 547 places, 1074 transitions, 50999 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:46:04,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 1079 transitions, 53149 flow [2021-03-24 22:46:09,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 1079 transitions, 52225 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 22:46:09,231 INFO L241 Difference]: Finished difference. Result has 550 places, 1073 transitions, 51046 flow [2021-03-24 22:46:09,231 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50085, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1074, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51046, PETRI_PLACES=550, PETRI_TRANSITIONS=1073} [2021-03-24 22:46:09,231 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 506 predicate places. [2021-03-24 22:46:09,232 INFO L480 AbstractCegarLoop]: Abstraction has has 550 places, 1073 transitions, 51046 flow [2021-03-24 22:46:09,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:09,232 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:46:09,232 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] [2021-03-24 22:46:09,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-24 22:46:09,232 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:46:09,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:46:09,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1997969798, now seen corresponding path program 102 times [2021-03-24 22:46:09,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:46:09,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266329053] [2021-03-24 22:46:09,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:46:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:46:09,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:46:09,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:46:09,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:46:09,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:46:09,243 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:46:09,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:46:09,248 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:46:09,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:46:09,257 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:46:09,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:46:09,269 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:46:09,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:46:09,287 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:46:09,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:46:09,311 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:46:09,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:46:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:46:09,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266329053] [2021-03-24 22:46:09,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:46:09,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:46:09,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239179304] [2021-03-24 22:46:09,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:46:09,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:46:09,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:46:09,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:46:09,332 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:46:09,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 1073 transitions, 51046 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:09,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:46:09,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:46:09,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:46:14,273 INFO L129 PetriNetUnfolder]: 523/9684 cut-off events. [2021-03-24 22:46:14,274 INFO L130 PetriNetUnfolder]: For 501280/514700 co-relation queries the response was YES. [2021-03-24 22:46:14,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85499 conditions, 9684 events. 523/9684 cut-off events. For 501280/514700 co-relation queries the response was YES. Maximal size of possible extension queue 1519. Compared 172646 event pairs, 523 based on Foata normal form. 74/9269 useless extension candidates. Maximal degree in co-relation 85325. Up to 1707 conditions per place. [2021-03-24 22:46:14,363 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 553 selfloop transitions, 509 changer transitions 2/1078 dead transitions. [2021-03-24 22:46:14,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 1078 transitions, 53194 flow [2021-03-24 22:46:14,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:46:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:46:14,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:46:14,364 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:46:14,364 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:46:14,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:46:14,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:46:14,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:46:14,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:14,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:14,365 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:14,365 INFO L185 Difference]: Start difference. First operand has 550 places, 1073 transitions, 51046 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:46:14,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 1078 transitions, 53194 flow [2021-03-24 22:46:18,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 1078 transitions, 52180 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 22:46:18,959 INFO L241 Difference]: Finished difference. Result has 552 places, 1071 transitions, 50947 flow [2021-03-24 22:46:18,959 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50042, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=509, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50947, PETRI_PLACES=552, PETRI_TRANSITIONS=1071} [2021-03-24 22:46:18,959 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 508 predicate places. [2021-03-24 22:46:18,959 INFO L480 AbstractCegarLoop]: Abstraction has has 552 places, 1071 transitions, 50947 flow [2021-03-24 22:46:18,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:18,959 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:46:18,959 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] [2021-03-24 22:46:18,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-24 22:46:18,960 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:46:18,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:46:18,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1286616456, now seen corresponding path program 103 times [2021-03-24 22:46:18,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:46:18,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952315929] [2021-03-24 22:46:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:46:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:46:19,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:46:19,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:46:19,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:46:19,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:46:19,006 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:46:19,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:46:19,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:46:19,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:46:19,020 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:46:19,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:46:19,056 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:46:19,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:46:19,096 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:46:19,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:46:19,126 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:46:19,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:46:19,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:46:19,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952315929] [2021-03-24 22:46:19,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:46:19,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:46:19,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423516907] [2021-03-24 22:46:19,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:46:19,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:46:19,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:46:19,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:46:19,206 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:46:19,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 1071 transitions, 50947 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:19,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:46:19,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:46:19,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:46:24,013 INFO L129 PetriNetUnfolder]: 523/9675 cut-off events. [2021-03-24 22:46:24,013 INFO L130 PetriNetUnfolder]: For 500388/513803 co-relation queries the response was YES. [2021-03-24 22:46:24,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85420 conditions, 9675 events. 523/9675 cut-off events. For 500388/513803 co-relation queries the response was YES. Maximal size of possible extension queue 1517. Compared 172454 event pairs, 523 based on Foata normal form. 72/9258 useless extension candidates. Maximal degree in co-relation 85246. Up to 1707 conditions per place. [2021-03-24 22:46:24,110 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 542 selfloop transitions, 518 changer transitions 2/1076 dead transitions. [2021-03-24 22:46:24,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 1076 transitions, 53091 flow [2021-03-24 22:46:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:46:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:46:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:46:24,132 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:46:24,132 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:46:24,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:46:24,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:46:24,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:46:24,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:24,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:24,133 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:24,133 INFO L185 Difference]: Start difference. First operand has 552 places, 1071 transitions, 50947 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:46:24,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 1076 transitions, 53091 flow [2021-03-24 22:46:29,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 1076 transitions, 52424 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-24 22:46:29,082 INFO L241 Difference]: Finished difference. Result has 555 places, 1069 transitions, 51208 flow [2021-03-24 22:46:29,083 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50290, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=518, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51208, PETRI_PLACES=555, PETRI_TRANSITIONS=1069} [2021-03-24 22:46:29,083 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 511 predicate places. [2021-03-24 22:46:29,083 INFO L480 AbstractCegarLoop]: Abstraction has has 555 places, 1069 transitions, 51208 flow [2021-03-24 22:46:29,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:29,083 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:46:29,083 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] [2021-03-24 22:46:29,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-24 22:46:29,083 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:46:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:46:29,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1454337536, now seen corresponding path program 104 times [2021-03-24 22:46:29,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:46:29,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431765362] [2021-03-24 22:46:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:46:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:46:29,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:46:29,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:46:29,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:46:29,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:46:29,123 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:46:29,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:46:29,129 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:46:29,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:46:29,138 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:46:29,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:46:29,159 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:46:29,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:46:29,177 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:46:29,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:46:29,201 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:46:29,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:46:29,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:46:29,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431765362] [2021-03-24 22:46:29,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:46:29,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:46:29,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637506965] [2021-03-24 22:46:29,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:46:29,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:46:29,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:46:29,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:46:29,224 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:46:29,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 1069 transitions, 51208 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:29,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:46:29,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:46:29,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:46:34,240 INFO L129 PetriNetUnfolder]: 523/9662 cut-off events. [2021-03-24 22:46:34,240 INFO L130 PetriNetUnfolder]: For 505101/518527 co-relation queries the response was YES. [2021-03-24 22:46:34,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85649 conditions, 9662 events. 523/9662 cut-off events. For 505101/518527 co-relation queries the response was YES. Maximal size of possible extension queue 1515. Compared 172180 event pairs, 523 based on Foata normal form. 74/9254 useless extension candidates. Maximal degree in co-relation 85475. Up to 1707 conditions per place. [2021-03-24 22:46:34,532 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 536 selfloop transitions, 522 changer transitions 2/1074 dead transitions. [2021-03-24 22:46:34,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 1074 transitions, 53348 flow [2021-03-24 22:46:34,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:46:34,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:46:34,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:46:34,533 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:46:34,533 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:46:34,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:46:34,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:46:34,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:46:34,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:34,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:34,534 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:34,534 INFO L185 Difference]: Start difference. First operand has 555 places, 1069 transitions, 51208 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:46:34,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 1074 transitions, 53348 flow [2021-03-24 22:46:39,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 1074 transitions, 51957 flow, removed 13 selfloop flow, removed 8 redundant places. [2021-03-24 22:46:39,290 INFO L241 Difference]: Finished difference. Result has 555 places, 1067 transitions, 50742 flow [2021-03-24 22:46:39,290 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49827, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=522, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50742, PETRI_PLACES=555, PETRI_TRANSITIONS=1067} [2021-03-24 22:46:39,290 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 511 predicate places. [2021-03-24 22:46:39,290 INFO L480 AbstractCegarLoop]: Abstraction has has 555 places, 1067 transitions, 50742 flow [2021-03-24 22:46:39,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:39,290 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:46:39,290 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] [2021-03-24 22:46:39,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-24 22:46:39,291 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:46:39,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:46:39,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1783847306, now seen corresponding path program 105 times [2021-03-24 22:46:39,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:46:39,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126735086] [2021-03-24 22:46:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:46:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:46:39,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:46:39,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:46:39,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:46:39,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:46:39,302 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:46:39,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:46:39,308 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:46:39,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:46:39,316 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:46:39,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:46:39,337 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:46:39,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:46:39,356 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:46:39,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:46:39,380 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:46:39,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:46:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:46:39,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126735086] [2021-03-24 22:46:39,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:46:39,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:46:39,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648834965] [2021-03-24 22:46:39,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:46:39,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:46:39,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:46:39,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:46:39,402 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:46:39,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 1067 transitions, 50742 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:39,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:46:39,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:46:39,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:46:44,481 INFO L129 PetriNetUnfolder]: 523/9654 cut-off events. [2021-03-24 22:46:44,482 INFO L130 PetriNetUnfolder]: For 498374/511794 co-relation queries the response was YES. [2021-03-24 22:46:44,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85252 conditions, 9654 events. 523/9654 cut-off events. For 498374/511794 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 172067 event pairs, 523 based on Foata normal form. 74/9246 useless extension candidates. Maximal degree in co-relation 85079. Up to 1707 conditions per place. [2021-03-24 22:46:44,587 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 535 selfloop transitions, 522 changer transitions 1/1072 dead transitions. [2021-03-24 22:46:44,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 1072 transitions, 52878 flow [2021-03-24 22:46:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:46:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:46:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:46:44,588 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:46:44,588 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:46:44,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:46:44,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:46:44,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:46:44,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:44,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:44,589 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:44,589 INFO L185 Difference]: Start difference. First operand has 555 places, 1067 transitions, 50742 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:46:44,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 1072 transitions, 52878 flow [2021-03-24 22:46:49,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 1072 transitions, 52085 flow, removed 19 selfloop flow, removed 4 redundant places. [2021-03-24 22:46:49,739 INFO L241 Difference]: Finished difference. Result has 559 places, 1066 transitions, 50931 flow [2021-03-24 22:46:49,740 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49959, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=522, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50931, PETRI_PLACES=559, PETRI_TRANSITIONS=1066} [2021-03-24 22:46:49,740 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 515 predicate places. [2021-03-24 22:46:49,740 INFO L480 AbstractCegarLoop]: Abstraction has has 559 places, 1066 transitions, 50931 flow [2021-03-24 22:46:49,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:49,740 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:46:49,740 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] [2021-03-24 22:46:49,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-24 22:46:49,740 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:46:49,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:46:49,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1290582502, now seen corresponding path program 106 times [2021-03-24 22:46:49,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:46:49,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897381581] [2021-03-24 22:46:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:46:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:46:49,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:46:49,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:46:49,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:46:49,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:46:49,773 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:46:49,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:46:49,780 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:46:49,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:46:49,788 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:46:49,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:46:49,807 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:46:49,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:46:49,830 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:46:49,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:46:49,850 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:46:49,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:46:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:46:49,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897381581] [2021-03-24 22:46:49,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:46:49,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:46:49,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120182108] [2021-03-24 22:46:49,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:46:49,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:46:49,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:46:49,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:46:49,870 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:46:49,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 1066 transitions, 50931 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:49,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:46:49,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:46:49,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:46:55,112 INFO L129 PetriNetUnfolder]: 523/9647 cut-off events. [2021-03-24 22:46:55,112 INFO L130 PetriNetUnfolder]: For 499161/512581 co-relation queries the response was YES. [2021-03-24 22:46:55,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85769 conditions, 9647 events. 523/9647 cut-off events. For 499161/512581 co-relation queries the response was YES. Maximal size of possible extension queue 1512. Compared 171840 event pairs, 523 based on Foata normal form. 74/9234 useless extension candidates. Maximal degree in co-relation 85596. Up to 1707 conditions per place. [2021-03-24 22:46:55,211 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 533 selfloop transitions, 522 changer transitions 2/1071 dead transitions. [2021-03-24 22:46:55,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 1071 transitions, 53065 flow [2021-03-24 22:46:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:46:55,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:46:55,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:46:55,212 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:46:55,212 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:46:55,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:46:55,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:46:55,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:46:55,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:55,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:55,213 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:46:55,213 INFO L185 Difference]: Start difference. First operand has 559 places, 1066 transitions, 50931 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:46:55,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 1071 transitions, 53065 flow [2021-03-24 22:47:00,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 1071 transitions, 52012 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-03-24 22:47:00,386 INFO L241 Difference]: Finished difference. Result has 560 places, 1064 transitions, 50799 flow [2021-03-24 22:47:00,386 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49888, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=522, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50799, PETRI_PLACES=560, PETRI_TRANSITIONS=1064} [2021-03-24 22:47:00,387 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 516 predicate places. [2021-03-24 22:47:00,387 INFO L480 AbstractCegarLoop]: Abstraction has has 560 places, 1064 transitions, 50799 flow [2021-03-24 22:47:00,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:00,387 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:47:00,387 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] [2021-03-24 22:47:00,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-24 22:47:00,387 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:47:00,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:47:00,387 INFO L82 PathProgramCache]: Analyzing trace with hash 2113595394, now seen corresponding path program 107 times [2021-03-24 22:47:00,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:47:00,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092950432] [2021-03-24 22:47:00,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:47:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:47:00,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:47:00,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:47:00,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:47:00,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:47:00,400 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:47:00,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:47:00,406 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:47:00,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:47:00,415 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:47:00,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:47:00,427 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:47:00,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:47:00,443 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:47:00,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:47:00,462 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:47:00,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:47:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:47:00,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092950432] [2021-03-24 22:47:00,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:47:00,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:47:00,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956657399] [2021-03-24 22:47:00,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:47:00,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:47:00,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:47:00,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:47:00,481 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:47:00,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 1064 transitions, 50799 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:00,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:47:00,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:47:00,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:47:05,840 INFO L129 PetriNetUnfolder]: 523/9639 cut-off events. [2021-03-24 22:47:05,840 INFO L130 PetriNetUnfolder]: For 498042/511462 co-relation queries the response was YES. [2021-03-24 22:47:05,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85714 conditions, 9639 events. 523/9639 cut-off events. For 498042/511462 co-relation queries the response was YES. Maximal size of possible extension queue 1510. Compared 171786 event pairs, 523 based on Foata normal form. 74/9226 useless extension candidates. Maximal degree in co-relation 85542. Up to 1707 conditions per place. [2021-03-24 22:47:05,942 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 526 selfloop transitions, 528 changer transitions 1/1069 dead transitions. [2021-03-24 22:47:05,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 1069 transitions, 52929 flow [2021-03-24 22:47:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:47:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:47:05,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:47:05,943 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:47:05,943 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:47:05,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:47:05,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:47:05,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:47:05,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:05,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:05,944 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:05,944 INFO L185 Difference]: Start difference. First operand has 560 places, 1064 transitions, 50799 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:47:05,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 1069 transitions, 52929 flow [2021-03-24 22:47:11,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 1069 transitions, 51887 flow, removed 19 selfloop flow, removed 6 redundant places. [2021-03-24 22:47:11,086 INFO L241 Difference]: Finished difference. Result has 562 places, 1063 transitions, 50750 flow [2021-03-24 22:47:11,087 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49767, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1064, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50750, PETRI_PLACES=562, PETRI_TRANSITIONS=1063} [2021-03-24 22:47:11,087 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 518 predicate places. [2021-03-24 22:47:11,087 INFO L480 AbstractCegarLoop]: Abstraction has has 562 places, 1063 transitions, 50750 flow [2021-03-24 22:47:11,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:11,087 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:47:11,087 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] [2021-03-24 22:47:11,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-24 22:47:11,088 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:47:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:47:11,088 INFO L82 PathProgramCache]: Analyzing trace with hash -420133374, now seen corresponding path program 108 times [2021-03-24 22:47:11,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:47:11,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652938222] [2021-03-24 22:47:11,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:47:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:47:11,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:47:11,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:47:11,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:47:11,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:47:11,112 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:47:11,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:47:11,117 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:47:11,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:47:11,126 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:47:11,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:47:11,155 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:47:11,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:47:11,188 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:47:11,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:47:11,218 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:47:11,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:47:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:47:11,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652938222] [2021-03-24 22:47:11,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:47:11,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:47:11,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263412874] [2021-03-24 22:47:11,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:47:11,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:47:11,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:47:11,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:47:11,237 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:47:11,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 1063 transitions, 50750 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:11,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:47:11,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:47:11,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:47:16,595 INFO L129 PetriNetUnfolder]: 523/9634 cut-off events. [2021-03-24 22:47:16,596 INFO L130 PetriNetUnfolder]: For 493974/507389 co-relation queries the response was YES. [2021-03-24 22:47:16,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85757 conditions, 9634 events. 523/9634 cut-off events. For 493974/507389 co-relation queries the response was YES. Maximal size of possible extension queue 1509. Compared 171640 event pairs, 523 based on Foata normal form. 72/9219 useless extension candidates. Maximal degree in co-relation 85586. Up to 1707 conditions per place. [2021-03-24 22:47:16,695 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 532 selfloop transitions, 520 changer transitions 2/1068 dead transitions. [2021-03-24 22:47:16,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 1068 transitions, 52878 flow [2021-03-24 22:47:16,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:47:16,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:47:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:47:16,697 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:47:16,697 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:47:16,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:47:16,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:47:16,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:47:16,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:16,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:16,698 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:16,698 INFO L185 Difference]: Start difference. First operand has 562 places, 1063 transitions, 50750 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:47:16,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 1068 transitions, 52878 flow [2021-03-24 22:47:21,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 1068 transitions, 52352 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-03-24 22:47:21,785 INFO L241 Difference]: Finished difference. Result has 566 places, 1061 transitions, 51137 flow [2021-03-24 22:47:21,786 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50234, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1063, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=520, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51137, PETRI_PLACES=566, PETRI_TRANSITIONS=1061} [2021-03-24 22:47:21,786 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 522 predicate places. [2021-03-24 22:47:21,786 INFO L480 AbstractCegarLoop]: Abstraction has has 566 places, 1061 transitions, 51137 flow [2021-03-24 22:47:21,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:21,786 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:47:21,786 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] [2021-03-24 22:47:21,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-24 22:47:21,786 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:47:21,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:47:21,786 INFO L82 PathProgramCache]: Analyzing trace with hash 555544842, now seen corresponding path program 109 times [2021-03-24 22:47:21,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:47:21,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196554111] [2021-03-24 22:47:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:47:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:47:21,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:47:21,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:47:21,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:47:21,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:47:21,797 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:47:21,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:47:21,803 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:47:21,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:47:21,812 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:47:21,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:47:21,825 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:47:21,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:47:21,841 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:47:21,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:47:21,862 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:47:21,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:47:21,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:47:21,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196554111] [2021-03-24 22:47:21,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:47:21,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:47:21,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689969652] [2021-03-24 22:47:21,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:47:21,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:47:21,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:47:21,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:47:21,882 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:47:21,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 1061 transitions, 51137 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:21,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:47:21,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:47:21,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:47:27,113 INFO L129 PetriNetUnfolder]: 523/9626 cut-off events. [2021-03-24 22:47:27,114 INFO L130 PetriNetUnfolder]: For 500390/513816 co-relation queries the response was YES. [2021-03-24 22:47:27,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86474 conditions, 9626 events. 523/9626 cut-off events. For 500390/513816 co-relation queries the response was YES. Maximal size of possible extension queue 1508. Compared 171423 event pairs, 523 based on Foata normal form. 74/9213 useless extension candidates. Maximal degree in co-relation 86303. Up to 1707 conditions per place. [2021-03-24 22:47:27,214 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 534 selfloop transitions, 517 changer transitions 1/1066 dead transitions. [2021-03-24 22:47:27,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 1066 transitions, 53261 flow [2021-03-24 22:47:27,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:47:27,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:47:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:47:27,215 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:47:27,215 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:47:27,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:47:27,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:47:27,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:47:27,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:27,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:27,216 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:27,216 INFO L185 Difference]: Start difference. First operand has 566 places, 1061 transitions, 51137 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:47:27,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 1066 transitions, 53261 flow [2021-03-24 22:47:32,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 1066 transitions, 51887 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-03-24 22:47:32,486 INFO L241 Difference]: Finished difference. Result has 567 places, 1060 transitions, 50732 flow [2021-03-24 22:47:32,487 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49773, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=517, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50732, PETRI_PLACES=567, PETRI_TRANSITIONS=1060} [2021-03-24 22:47:32,487 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 523 predicate places. [2021-03-24 22:47:32,487 INFO L480 AbstractCegarLoop]: Abstraction has has 567 places, 1060 transitions, 50732 flow [2021-03-24 22:47:32,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:32,487 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:47:32,487 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] [2021-03-24 22:47:32,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-24 22:47:32,487 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:47:32,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:47:32,488 INFO L82 PathProgramCache]: Analyzing trace with hash -403407384, now seen corresponding path program 110 times [2021-03-24 22:47:32,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:47:32,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418260851] [2021-03-24 22:47:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:47:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:47:32,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:47:32,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:47:32,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:47:32,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:47:32,499 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:47:32,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:47:32,505 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:47:32,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:47:32,513 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:47:32,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:47:32,526 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:47:32,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:47:32,557 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:47:32,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:47:32,580 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:47:32,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:47:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:47:32,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418260851] [2021-03-24 22:47:32,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:47:32,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:47:32,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692486675] [2021-03-24 22:47:32,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:47:32,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:47:32,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:47:32,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:47:32,602 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:47:32,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 1060 transitions, 50732 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:32,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:47:32,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:47:32,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:47:37,943 INFO L129 PetriNetUnfolder]: 523/9620 cut-off events. [2021-03-24 22:47:37,944 INFO L130 PetriNetUnfolder]: For 494074/507494 co-relation queries the response was YES. [2021-03-24 22:47:38,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86087 conditions, 9620 events. 523/9620 cut-off events. For 494074/507494 co-relation queries the response was YES. Maximal size of possible extension queue 1507. Compared 171350 event pairs, 523 based on Foata normal form. 74/9212 useless extension candidates. Maximal degree in co-relation 85916. Up to 1707 conditions per place. [2021-03-24 22:47:38,039 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 523 selfloop transitions, 527 changer transitions 1/1065 dead transitions. [2021-03-24 22:47:38,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 1065 transitions, 52854 flow [2021-03-24 22:47:38,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:47:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:47:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:47:38,040 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:47:38,040 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:47:38,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:47:38,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:47:38,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:47:38,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:38,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:38,041 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:38,041 INFO L185 Difference]: Start difference. First operand has 567 places, 1060 transitions, 50732 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:47:38,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 1065 transitions, 52854 flow [2021-03-24 22:47:42,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 1065 transitions, 51887 flow, removed 16 selfloop flow, removed 6 redundant places. [2021-03-24 22:47:43,040 INFO L241 Difference]: Finished difference. Result has 569 places, 1059 transitions, 50750 flow [2021-03-24 22:47:43,041 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49775, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=527, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50750, PETRI_PLACES=569, PETRI_TRANSITIONS=1059} [2021-03-24 22:47:43,041 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 525 predicate places. [2021-03-24 22:47:43,041 INFO L480 AbstractCegarLoop]: Abstraction has has 569 places, 1059 transitions, 50750 flow [2021-03-24 22:47:43,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:43,041 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:47:43,041 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] [2021-03-24 22:47:43,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-24 22:47:43,041 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:47:43,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:47:43,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1056265780, now seen corresponding path program 111 times [2021-03-24 22:47:43,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:47:43,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364342789] [2021-03-24 22:47:43,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:47:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:47:43,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:47:43,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:47:43,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:47:43,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:47:43,072 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:47:43,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:47:43,082 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:47:43,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:47:43,093 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:47:43,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:47:43,105 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:47:43,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:47:43,121 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:47:43,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:47:43,143 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:47:43,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:47:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:47:43,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364342789] [2021-03-24 22:47:43,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:47:43,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:47:43,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538705081] [2021-03-24 22:47:43,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:47:43,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:47:43,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:47:43,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:47:43,163 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:47:43,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 1059 transitions, 50750 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:43,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:47:43,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:47:43,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:47:48,379 INFO L129 PetriNetUnfolder]: 523/9614 cut-off events. [2021-03-24 22:47:48,379 INFO L130 PetriNetUnfolder]: For 492792/506212 co-relation queries the response was YES. [2021-03-24 22:47:48,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86153 conditions, 9614 events. 523/9614 cut-off events. For 492792/506212 co-relation queries the response was YES. Maximal size of possible extension queue 1506. Compared 171210 event pairs, 523 based on Foata normal form. 74/9206 useless extension candidates. Maximal degree in co-relation 85983. Up to 1707 conditions per place. [2021-03-24 22:47:48,482 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 533 selfloop transitions, 515 changer transitions 2/1064 dead transitions. [2021-03-24 22:47:48,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 1064 transitions, 52870 flow [2021-03-24 22:47:48,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:47:48,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:47:48,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:47:48,483 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:47:48,483 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:47:48,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:47:48,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:47:48,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:47:48,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:48,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:48,484 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:48,484 INFO L185 Difference]: Start difference. First operand has 569 places, 1059 transitions, 50750 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:47:48,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 1064 transitions, 52870 flow [2021-03-24 22:47:53,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1064 transitions, 51669 flow, removed 18 selfloop flow, removed 7 redundant places. [2021-03-24 22:47:53,256 INFO L241 Difference]: Finished difference. Result has 570 places, 1057 transitions, 50449 flow [2021-03-24 22:47:53,257 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49559, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1059, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=515, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50449, PETRI_PLACES=570, PETRI_TRANSITIONS=1057} [2021-03-24 22:47:53,257 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 526 predicate places. [2021-03-24 22:47:53,257 INFO L480 AbstractCegarLoop]: Abstraction has has 570 places, 1057 transitions, 50449 flow [2021-03-24 22:47:53,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:53,257 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:47:53,257 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] [2021-03-24 22:47:53,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-24 22:47:53,257 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:47:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:47:53,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1741496410, now seen corresponding path program 112 times [2021-03-24 22:47:53,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:47:53,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548123212] [2021-03-24 22:47:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:47:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:47:53,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:47:53,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:47:53,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:47:53,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:47:53,276 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:47:53,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:47:53,282 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:47:53,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:47:53,291 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:47:53,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:47:53,304 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-24 22:47:53,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-24 22:47:53,332 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:47:53,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:47:53,353 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:47:53,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:47:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:47:53,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548123212] [2021-03-24 22:47:53,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:47:53,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:47:53,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675423397] [2021-03-24 22:47:53,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:47:53,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:47:53,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:47:53,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:47:53,374 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:47:53,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 1057 transitions, 50449 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:53,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:47:53,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:47:53,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:47:58,240 INFO L129 PetriNetUnfolder]: 523/9607 cut-off events. [2021-03-24 22:47:58,240 INFO L130 PetriNetUnfolder]: For 488721/502141 co-relation queries the response was YES. [2021-03-24 22:47:58,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85762 conditions, 9607 events. 523/9607 cut-off events. For 488721/502141 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 171055 event pairs, 523 based on Foata normal form. 74/9195 useless extension candidates. Maximal degree in co-relation 85593. Up to 1707 conditions per place. [2021-03-24 22:47:58,339 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 522 selfloop transitions, 524 changer transitions 2/1062 dead transitions. [2021-03-24 22:47:58,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1062 transitions, 52565 flow [2021-03-24 22:47:58,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:47:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:47:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:47:58,340 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:47:58,340 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:47:58,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:47:58,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:47:58,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:47:58,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:58,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:58,345 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:47:58,345 INFO L185 Difference]: Start difference. First operand has 570 places, 1057 transitions, 50449 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:47:58,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 1062 transitions, 52565 flow [2021-03-24 22:48:03,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 1062 transitions, 51541 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 22:48:03,048 INFO L241 Difference]: Finished difference. Result has 572 places, 1055 transitions, 50357 flow [2021-03-24 22:48:03,048 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49435, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1057, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=524, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50357, PETRI_PLACES=572, PETRI_TRANSITIONS=1055} [2021-03-24 22:48:03,048 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 528 predicate places. [2021-03-24 22:48:03,048 INFO L480 AbstractCegarLoop]: Abstraction has has 572 places, 1055 transitions, 50357 flow [2021-03-24 22:48:03,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:03,048 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:48:03,049 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] [2021-03-24 22:48:03,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-24 22:48:03,049 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:48:03,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:48:03,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1878957672, now seen corresponding path program 113 times [2021-03-24 22:48:03,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:48:03,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089751745] [2021-03-24 22:48:03,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:48:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:48:03,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:48:03,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:48:03,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:48:03,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:48:03,064 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:48:03,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:48:03,070 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:48:03,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:48:03,078 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:48:03,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:48:03,090 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:48:03,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:48:03,106 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-24 22:48:03,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 22:48:03,126 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:48:03,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:48:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:48:03,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089751745] [2021-03-24 22:48:03,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:48:03,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:48:03,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927204810] [2021-03-24 22:48:03,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:48:03,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:48:03,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:48:03,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:48:03,147 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:48:03,147 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 1055 transitions, 50357 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:03,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:48:03,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:48:03,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:48:07,955 INFO L129 PetriNetUnfolder]: 523/9591 cut-off events. [2021-03-24 22:48:07,955 INFO L130 PetriNetUnfolder]: For 486083/499498 co-relation queries the response was YES. [2021-03-24 22:48:08,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85473 conditions, 9591 events. 523/9591 cut-off events. For 486083/499498 co-relation queries the response was YES. Maximal size of possible extension queue 1502. Compared 170634 event pairs, 523 based on Foata normal form. 72/9179 useless extension candidates. Maximal degree in co-relation 85304. Up to 1707 conditions per place. [2021-03-24 22:48:08,053 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 523 selfloop transitions, 521 changer transitions 2/1060 dead transitions. [2021-03-24 22:48:08,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 1060 transitions, 52469 flow [2021-03-24 22:48:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:48:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:48:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:48:08,054 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:48:08,054 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:48:08,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:48:08,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:48:08,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:48:08,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:08,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:08,080 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:08,080 INFO L185 Difference]: Start difference. First operand has 572 places, 1055 transitions, 50357 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:48:08,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 1060 transitions, 52469 flow [2021-03-24 22:48:12,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 1060 transitions, 51438 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 22:48:12,930 INFO L241 Difference]: Finished difference. Result has 574 places, 1053 transitions, 50234 flow [2021-03-24 22:48:12,931 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49336, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=521, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50234, PETRI_PLACES=574, PETRI_TRANSITIONS=1053} [2021-03-24 22:48:12,931 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 530 predicate places. [2021-03-24 22:48:12,931 INFO L480 AbstractCegarLoop]: Abstraction has has 574 places, 1053 transitions, 50234 flow [2021-03-24 22:48:12,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:12,931 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:48:12,931 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:48:12,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-24 22:48:12,931 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:48:12,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:48:12,931 INFO L82 PathProgramCache]: Analyzing trace with hash -939411744, now seen corresponding path program 114 times [2021-03-24 22:48:12,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:48:12,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066680546] [2021-03-24 22:48:12,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:48:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:48:12,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:48:12,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:48:12,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:48:12,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:48:12,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:48:12,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:48:12,974 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:48:12,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:48:12,982 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:48:12,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:48:13,008 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:48:13,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:48:13,026 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:48:13,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:48:13,050 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:48:13,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:48:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:48:13,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066680546] [2021-03-24 22:48:13,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:48:13,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:48:13,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076930867] [2021-03-24 22:48:13,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:48:13,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:48:13,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:48:13,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:48:13,072 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:48:13,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 1053 transitions, 50234 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:13,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:48:13,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:48:13,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:48:14,711 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-24 22:48:17,988 INFO L129 PetriNetUnfolder]: 523/9585 cut-off events. [2021-03-24 22:48:17,988 INFO L130 PetriNetUnfolder]: For 485573/498988 co-relation queries the response was YES. [2021-03-24 22:48:18,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85426 conditions, 9585 events. 523/9585 cut-off events. For 485573/498988 co-relation queries the response was YES. Maximal size of possible extension queue 1501. Compared 170545 event pairs, 523 based on Foata normal form. 72/9174 useless extension candidates. Maximal degree in co-relation 85257. Up to 1707 conditions per place. [2021-03-24 22:48:18,085 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 524 selfloop transitions, 518 changer transitions 2/1058 dead transitions. [2021-03-24 22:48:18,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 1058 transitions, 52342 flow [2021-03-24 22:48:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:48:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:48:18,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:48:18,086 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:48:18,086 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:48:18,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:48:18,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:48:18,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:48:18,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:18,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:18,087 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:18,087 INFO L185 Difference]: Start difference. First operand has 574 places, 1053 transitions, 50234 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:48:18,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 1058 transitions, 52342 flow [2021-03-24 22:48:22,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 1058 transitions, 51327 flow, removed 15 selfloop flow, removed 6 redundant places. [2021-03-24 22:48:22,706 INFO L241 Difference]: Finished difference. Result has 576 places, 1051 transitions, 50132 flow [2021-03-24 22:48:22,707 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49229, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1053, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=518, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50132, PETRI_PLACES=576, PETRI_TRANSITIONS=1051} [2021-03-24 22:48:22,707 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 532 predicate places. [2021-03-24 22:48:22,707 INFO L480 AbstractCegarLoop]: Abstraction has has 576 places, 1051 transitions, 50132 flow [2021-03-24 22:48:22,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:22,707 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:48:22,707 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] [2021-03-24 22:48:22,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-24 22:48:22,707 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:48:22,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:48:22,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1331962708, now seen corresponding path program 115 times [2021-03-24 22:48:22,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:48:22,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055171143] [2021-03-24 22:48:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:48:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:48:22,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:48:22,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:48:22,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:48:22,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:48:22,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:48:22,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:48:22,724 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:48:22,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:48:22,732 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:48:22,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:48:22,744 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:48:22,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:48:22,762 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:48:22,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:48:22,787 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:48:22,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:48:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:48:22,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055171143] [2021-03-24 22:48:22,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:48:22,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:48:22,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921764372] [2021-03-24 22:48:22,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:48:22,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:48:22,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:48:22,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:48:22,810 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:48:22,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 1051 transitions, 50132 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:22,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:48:22,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:48:22,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:48:27,565 INFO L129 PetriNetUnfolder]: 523/9576 cut-off events. [2021-03-24 22:48:27,566 INFO L130 PetriNetUnfolder]: For 482287/495707 co-relation queries the response was YES. [2021-03-24 22:48:27,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85426 conditions, 9576 events. 523/9576 cut-off events. For 482287/495707 co-relation queries the response was YES. Maximal size of possible extension queue 1500. Compared 170320 event pairs, 523 based on Foata normal form. 74/9171 useless extension candidates. Maximal degree in co-relation 85258. Up to 1745 conditions per place. [2021-03-24 22:48:27,854 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 556 selfloop transitions, 539 changer transitions 1/1110 dead transitions. [2021-03-24 22:48:27,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 1110 transitions, 54915 flow [2021-03-24 22:48:27,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:48:27,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:48:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:48:27,855 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:48:27,855 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:48:27,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:48:27,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:48:27,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:48:27,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:27,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:27,856 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:27,856 INFO L185 Difference]: Start difference. First operand has 576 places, 1051 transitions, 50132 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:48:27,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 1110 transitions, 54915 flow [2021-03-24 22:48:32,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 1110 transitions, 53985 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 22:48:32,503 INFO L241 Difference]: Finished difference. Result has 580 places, 1070 transitions, 51488 flow [2021-03-24 22:48:32,504 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49212, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1051, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51488, PETRI_PLACES=580, PETRI_TRANSITIONS=1070} [2021-03-24 22:48:32,504 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 536 predicate places. [2021-03-24 22:48:32,504 INFO L480 AbstractCegarLoop]: Abstraction has has 580 places, 1070 transitions, 51488 flow [2021-03-24 22:48:32,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:32,504 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:48:32,504 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] [2021-03-24 22:48:32,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-24 22:48:32,504 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:48:32,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:48:32,504 INFO L82 PathProgramCache]: Analyzing trace with hash -377779100, now seen corresponding path program 116 times [2021-03-24 22:48:32,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:48:32,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033699184] [2021-03-24 22:48:32,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:48:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:48:32,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:48:32,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:48:32,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:48:32,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:48:32,517 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:48:32,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:48:32,523 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:48:32,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:48:32,531 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:48:32,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:48:32,543 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-24 22:48:32,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 22:48:32,561 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:48:32,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:48:32,585 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:48:32,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:48:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:48:32,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033699184] [2021-03-24 22:48:32,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:48:32,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:48:32,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954763602] [2021-03-24 22:48:32,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:48:32,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:48:32,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:48:32,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:48:32,608 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:48:32,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 1070 transitions, 51488 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:32,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:48:32,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:48:32,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:48:37,575 INFO L129 PetriNetUnfolder]: 523/9571 cut-off events. [2021-03-24 22:48:37,575 INFO L130 PetriNetUnfolder]: For 486369/499927 co-relation queries the response was YES. [2021-03-24 22:48:37,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85557 conditions, 9571 events. 523/9571 cut-off events. For 486369/499927 co-relation queries the response was YES. Maximal size of possible extension queue 1499. Compared 170144 event pairs, 523 based on Foata normal form. 74/9151 useless extension candidates. Maximal degree in co-relation 85388. Up to 1745 conditions per place. [2021-03-24 22:48:37,662 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 557 selfloop transitions, 536 changer transitions 2/1109 dead transitions. [2021-03-24 22:48:37,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 1109 transitions, 55150 flow [2021-03-24 22:48:37,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:48:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:48:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:48:37,663 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:48:37,664 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:48:37,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:48:37,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:48:37,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:48:37,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:37,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:37,665 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:37,665 INFO L185 Difference]: Start difference. First operand has 580 places, 1070 transitions, 51488 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:48:37,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 1109 transitions, 55150 flow [2021-03-24 22:48:42,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 1109 transitions, 53643 flow, removed 37 selfloop flow, removed 7 redundant places. [2021-03-24 22:48:42,143 INFO L241 Difference]: Finished difference. Result has 581 places, 1068 transitions, 50947 flow [2021-03-24 22:48:42,144 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49991, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50947, PETRI_PLACES=581, PETRI_TRANSITIONS=1068} [2021-03-24 22:48:42,144 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 537 predicate places. [2021-03-24 22:48:42,144 INFO L480 AbstractCegarLoop]: Abstraction has has 581 places, 1068 transitions, 50947 flow [2021-03-24 22:48:42,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:42,144 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:48:42,144 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] [2021-03-24 22:48:42,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-24 22:48:42,144 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:48:42,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:48:42,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1052411816, now seen corresponding path program 117 times [2021-03-24 22:48:42,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:48:42,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656352580] [2021-03-24 22:48:42,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:48:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:48:42,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:48:42,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:48:42,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:48:42,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:48:42,155 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:48:42,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:48:42,161 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:48:42,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:48:42,170 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:48:42,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:48:42,182 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:48:42,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:48:42,213 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:48:42,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:48:42,261 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:48:42,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:48:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:48:42,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656352580] [2021-03-24 22:48:42,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:48:42,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:48:42,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513029663] [2021-03-24 22:48:42,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:48:42,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:48:42,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:48:42,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:48:42,292 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:48:42,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 1068 transitions, 50947 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:42,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:48:42,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:48:42,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:48:47,342 INFO L129 PetriNetUnfolder]: 523/9561 cut-off events. [2021-03-24 22:48:47,342 INFO L130 PetriNetUnfolder]: For 478735/492149 co-relation queries the response was YES. [2021-03-24 22:48:47,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85102 conditions, 9561 events. 523/9561 cut-off events. For 478735/492149 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 170051 event pairs, 523 based on Foata normal form. 74/9162 useless extension candidates. Maximal degree in co-relation 84933. Up to 1745 conditions per place. [2021-03-24 22:48:47,436 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 581 selfloop transitions, 511 changer transitions 1/1107 dead transitions. [2021-03-24 22:48:47,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 1107 transitions, 54605 flow [2021-03-24 22:48:47,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:48:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:48:47,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:48:47,437 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:48:47,437 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:48:47,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:48:47,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:48:47,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:48:47,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:47,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:47,438 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:47,438 INFO L185 Difference]: Start difference. First operand has 581 places, 1068 transitions, 50947 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:48:47,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 1107 transitions, 54605 flow [2021-03-24 22:48:51,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 1107 transitions, 53525 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 22:48:51,878 INFO L241 Difference]: Finished difference. Result has 582 places, 1067 transitions, 50830 flow [2021-03-24 22:48:51,879 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49877, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1068, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=511, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=50830, PETRI_PLACES=582, PETRI_TRANSITIONS=1067} [2021-03-24 22:48:51,879 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 538 predicate places. [2021-03-24 22:48:51,879 INFO L480 AbstractCegarLoop]: Abstraction has has 582 places, 1067 transitions, 50830 flow [2021-03-24 22:48:51,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:51,879 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:48:51,879 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] [2021-03-24 22:48:51,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-24 22:48:51,879 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:48:51,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:48:51,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1020902504, now seen corresponding path program 118 times [2021-03-24 22:48:51,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:48:51,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289136541] [2021-03-24 22:48:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:48:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:48:51,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:48:51,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:48:51,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:48:51,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:48:51,890 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:48:51,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:48:51,896 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:48:51,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:48:51,905 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:48:51,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:48:51,917 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:48:51,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:48:51,934 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:48:51,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:48:51,958 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:48:51,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:48:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:48:51,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289136541] [2021-03-24 22:48:51,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:48:51,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:48:51,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137033793] [2021-03-24 22:48:51,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:48:51,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:48:51,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:48:51,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:48:51,981 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:48:51,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 1067 transitions, 50830 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:51,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:48:51,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:48:51,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:48:56,994 INFO L129 PetriNetUnfolder]: 523/9554 cut-off events. [2021-03-24 22:48:56,994 INFO L130 PetriNetUnfolder]: For 478122/491644 co-relation queries the response was YES. [2021-03-24 22:48:57,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85091 conditions, 9554 events. 523/9554 cut-off events. For 478122/491644 co-relation queries the response was YES. Maximal size of possible extension queue 1496. Compared 169814 event pairs, 523 based on Foata normal form. 74/9132 useless extension candidates. Maximal degree in co-relation 84923. Up to 1745 conditions per place. [2021-03-24 22:48:57,080 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 579 selfloop transitions, 512 changer transitions 1/1106 dead transitions. [2021-03-24 22:48:57,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 1106 transitions, 54486 flow [2021-03-24 22:48:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:48:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:48:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:48:57,081 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:48:57,081 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:48:57,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:48:57,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:48:57,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:48:57,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:57,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:57,082 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:48:57,082 INFO L185 Difference]: Start difference. First operand has 582 places, 1067 transitions, 50830 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:48:57,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 1106 transitions, 54486 flow [2021-03-24 22:49:01,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 1106 transitions, 53606 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-03-24 22:49:01,914 INFO L241 Difference]: Finished difference. Result has 585 places, 1076 transitions, 51469 flow [2021-03-24 22:49:01,915 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=49960, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51469, PETRI_PLACES=585, PETRI_TRANSITIONS=1076} [2021-03-24 22:49:01,915 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 541 predicate places. [2021-03-24 22:49:01,915 INFO L480 AbstractCegarLoop]: Abstraction has has 585 places, 1076 transitions, 51469 flow [2021-03-24 22:49:01,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:01,915 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:49:01,915 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] [2021-03-24 22:49:01,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-24 22:49:01,915 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:49:01,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:49:01,916 INFO L82 PathProgramCache]: Analyzing trace with hash -873622262, now seen corresponding path program 119 times [2021-03-24 22:49:01,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:49:01,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315270164] [2021-03-24 22:49:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:49:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:49:01,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:49:01,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:49:01,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:49:01,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:49:01,927 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:49:01,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:49:01,933 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:49:01,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:49:01,941 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:49:01,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:49:01,953 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:49:01,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:49:01,983 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:49:01,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:49:02,007 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:49:02,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:49:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:49:02,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315270164] [2021-03-24 22:49:02,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:49:02,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:49:02,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965129455] [2021-03-24 22:49:02,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:49:02,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:49:02,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:49:02,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:49:02,029 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:49:02,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 1076 transitions, 51469 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:02,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:49:02,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:49:02,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:49:07,231 INFO L129 PetriNetUnfolder]: 523/9548 cut-off events. [2021-03-24 22:49:07,231 INFO L130 PetriNetUnfolder]: For 477102/488043 co-relation queries the response was YES. [2021-03-24 22:49:07,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85579 conditions, 9548 events. 523/9548 cut-off events. For 477102/488043 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 169765 event pairs, 523 based on Foata normal form. 72/9139 useless extension candidates. Maximal degree in co-relation 85412. Up to 1745 conditions per place. [2021-03-24 22:49:07,320 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 563 selfloop transitions, 527 changer transitions 1/1105 dead transitions. [2021-03-24 22:49:07,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 1105 transitions, 54649 flow [2021-03-24 22:49:07,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:49:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:49:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:49:07,321 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:49:07,321 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:49:07,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:49:07,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:49:07,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:49:07,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:07,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:07,325 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:07,325 INFO L185 Difference]: Start difference. First operand has 585 places, 1076 transitions, 51469 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:49:07,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 1105 transitions, 54649 flow [2021-03-24 22:49:11,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 1105 transitions, 54042 flow, removed 25 selfloop flow, removed 4 redundant places. [2021-03-24 22:49:12,003 INFO L241 Difference]: Finished difference. Result has 589 places, 1075 transitions, 51857 flow [2021-03-24 22:49:12,003 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50872, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=527, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51857, PETRI_PLACES=589, PETRI_TRANSITIONS=1075} [2021-03-24 22:49:12,003 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 545 predicate places. [2021-03-24 22:49:12,003 INFO L480 AbstractCegarLoop]: Abstraction has has 589 places, 1075 transitions, 51857 flow [2021-03-24 22:49:12,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:12,004 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:49:12,004 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] [2021-03-24 22:49:12,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-03-24 22:49:12,004 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:49:12,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:49:12,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1394076046, now seen corresponding path program 120 times [2021-03-24 22:49:12,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:49:12,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794379398] [2021-03-24 22:49:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:49:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:49:12,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:49:12,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:49:12,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:49:12,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:49:12,026 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:49:12,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:49:12,032 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:49:12,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:49:12,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:49:12,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:49:12,052 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-24 22:49:12,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-24 22:49:12,081 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:49:12,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:49:12,110 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:49:12,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:49:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:49:12,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794379398] [2021-03-24 22:49:12,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:49:12,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:49:12,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943781971] [2021-03-24 22:49:12,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:49:12,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:49:12,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:49:12,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:49:12,132 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:49:12,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 1075 transitions, 51857 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:12,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:49:12,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:49:12,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:49:17,308 INFO L129 PetriNetUnfolder]: 523/9541 cut-off events. [2021-03-24 22:49:17,309 INFO L130 PetriNetUnfolder]: For 482566/493592 co-relation queries the response was YES. [2021-03-24 22:49:17,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86001 conditions, 9541 events. 523/9541 cut-off events. For 482566/493592 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 169483 event pairs, 523 based on Foata normal form. 74/9126 useless extension candidates. Maximal degree in co-relation 85834. Up to 1745 conditions per place. [2021-03-24 22:49:17,400 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 561 selfloop transitions, 527 changer transitions 2/1104 dead transitions. [2021-03-24 22:49:17,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 1104 transitions, 55035 flow [2021-03-24 22:49:17,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:49:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:49:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:49:17,416 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:49:17,416 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:49:17,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:49:17,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:49:17,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:49:17,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:17,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:17,417 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:17,417 INFO L185 Difference]: Start difference. First operand has 589 places, 1075 transitions, 51857 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:49:17,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 1104 transitions, 55035 flow [2021-03-24 22:49:22,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 1104 transitions, 54028 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-24 22:49:22,042 INFO L241 Difference]: Finished difference. Result has 591 places, 1073 transitions, 51786 flow [2021-03-24 22:49:22,042 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50860, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1075, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=527, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51786, PETRI_PLACES=591, PETRI_TRANSITIONS=1073} [2021-03-24 22:49:22,042 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 547 predicate places. [2021-03-24 22:49:22,043 INFO L480 AbstractCegarLoop]: Abstraction has has 591 places, 1073 transitions, 51786 flow [2021-03-24 22:49:22,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:22,043 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:49:22,043 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] [2021-03-24 22:49:22,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-03-24 22:49:22,043 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:49:22,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:49:22,043 INFO L82 PathProgramCache]: Analyzing trace with hash 624594828, now seen corresponding path program 121 times [2021-03-24 22:49:22,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:49:22,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309349206] [2021-03-24 22:49:22,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:49:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:49:22,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:49:22,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:49:22,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:49:22,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:49:22,062 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:49:22,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:49:22,068 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:49:22,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:49:22,077 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-24 22:49:22,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 22:49:22,111 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:49:22,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:49:22,128 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:49:22,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:49:22,168 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:49:22,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:49:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:49:22,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309349206] [2021-03-24 22:49:22,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:49:22,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:49:22,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866012347] [2021-03-24 22:49:22,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:49:22,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:49:22,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:49:22,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:49:22,195 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:49:22,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 1073 transitions, 51786 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:22,195 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:49:22,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:49:22,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:49:27,194 INFO L129 PetriNetUnfolder]: 523/9533 cut-off events. [2021-03-24 22:49:27,194 INFO L130 PetriNetUnfolder]: For 479773/490863 co-relation queries the response was YES. [2021-03-24 22:49:27,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86047 conditions, 9533 events. 523/9533 cut-off events. For 479773/490863 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 169448 event pairs, 523 based on Foata normal form. 74/9114 useless extension candidates. Maximal degree in co-relation 85881. Up to 1745 conditions per place. [2021-03-24 22:49:27,279 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 565 selfloop transitions, 521 changer transitions 2/1102 dead transitions. [2021-03-24 22:49:27,279 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 1102 transitions, 54960 flow [2021-03-24 22:49:27,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:49:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:49:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:49:27,281 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:49:27,281 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:49:27,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:49:27,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:49:27,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:49:27,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:27,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:27,282 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:27,282 INFO L185 Difference]: Start difference. First operand has 591 places, 1073 transitions, 51786 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:49:27,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 1102 transitions, 54960 flow [2021-03-24 22:49:31,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 1102 transitions, 53918 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-24 22:49:31,698 INFO L241 Difference]: Finished difference. Result has 593 places, 1071 transitions, 51668 flow [2021-03-24 22:49:31,699 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50754, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=521, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=51668, PETRI_PLACES=593, PETRI_TRANSITIONS=1071} [2021-03-24 22:49:31,699 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 549 predicate places. [2021-03-24 22:49:31,699 INFO L480 AbstractCegarLoop]: Abstraction has has 593 places, 1071 transitions, 51668 flow [2021-03-24 22:49:31,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:31,699 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:49:31,700 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] [2021-03-24 22:49:31,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-03-24 22:49:31,701 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:49:31,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:49:31,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1947209994, now seen corresponding path program 122 times [2021-03-24 22:49:31,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:49:31,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608934730] [2021-03-24 22:49:31,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:49:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:49:31,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:49:31,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:49:31,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:49:31,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:49:31,755 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:49:31,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:49:31,761 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:49:31,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:49:31,769 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:49:31,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:49:31,782 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:49:31,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:49:31,814 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:49:31,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:49:31,837 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:49:31,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:49:31,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:49:31,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608934730] [2021-03-24 22:49:31,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:49:31,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:49:31,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108818458] [2021-03-24 22:49:31,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:49:31,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:49:31,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:49:31,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:49:31,877 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:49:31,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 1071 transitions, 51668 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:31,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:49:31,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:49:31,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:49:36,862 INFO L129 PetriNetUnfolder]: 523/9525 cut-off events. [2021-03-24 22:49:36,862 INFO L130 PetriNetUnfolder]: For 478801/489771 co-relation queries the response was YES. [2021-03-24 22:49:36,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85995 conditions, 9525 events. 523/9525 cut-off events. For 478801/489771 co-relation queries the response was YES. Maximal size of possible extension queue 1490. Compared 169130 event pairs, 523 based on Foata normal form. 74/9110 useless extension candidates. Maximal degree in co-relation 85829. Up to 1745 conditions per place. [2021-03-24 22:49:36,949 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 538 selfloop transitions, 546 changer transitions 2/1100 dead transitions. [2021-03-24 22:49:36,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 1100 transitions, 54838 flow [2021-03-24 22:49:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:49:36,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 22:49:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-03-24 22:49:36,951 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8607918263090677 [2021-03-24 22:49:36,951 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-03-24 22:49:36,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-03-24 22:49:36,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:49:36,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-03-24 22:49:36,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:36,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:36,954 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:36,954 INFO L185 Difference]: Start difference. First operand has 593 places, 1071 transitions, 51668 flow. Second operand 9 states and 674 transitions. [2021-03-24 22:49:36,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 1100 transitions, 54838 flow [2021-03-24 22:49:41,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 1100 transitions, 53886 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 22:49:41,452 INFO L241 Difference]: Finished difference. Result has 597 places, 1093 transitions, 52898 flow [2021-03-24 22:49:41,453 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=50726, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=522, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=52898, PETRI_PLACES=597, PETRI_TRANSITIONS=1093} [2021-03-24 22:49:41,453 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, 553 predicate places. [2021-03-24 22:49:41,453 INFO L480 AbstractCegarLoop]: Abstraction has has 597 places, 1093 transitions, 52898 flow [2021-03-24 22:49:41,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:41,454 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:49:41,454 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] [2021-03-24 22:49:41,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-03-24 22:49:41,455 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-24 22:49:41,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:49:41,455 INFO L82 PathProgramCache]: Analyzing trace with hash 790093886, now seen corresponding path program 123 times [2021-03-24 22:49:41,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:49:41,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441992417] [2021-03-24 22:49:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:49:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:49:41,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:49:41,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:49:41,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:49:41,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 22:49:41,466 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 22:49:41,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:49:41,472 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 22:49:41,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 22:49:41,480 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-24 22:49:41,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 22:49:41,493 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-24 22:49:41,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 22:49:41,510 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-24 22:49:41,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 22:49:41,534 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-24 22:49:41,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-24 22:49:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:49:41,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441992417] [2021-03-24 22:49:41,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:49:41,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 22:49:41,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962143440] [2021-03-24 22:49:41,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 22:49:41,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:49:41,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 22:49:41,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-24 22:49:41,557 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 87 [2021-03-24 22:49:41,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 1093 transitions, 52898 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:49:41,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:49:41,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 87 [2021-03-24 22:49:41,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-03-24 22:49:45,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 22:49:45,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-03-24 22:49:45,745 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-24 22:49:45,756 WARN L224 ceAbstractionStarter]: Timeout [2021-03-24 22:49:45,756 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:49:45 BasicIcfg [2021-03-24 22:49:45,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 22:49:45,757 INFO L168 Benchmark]: Toolchain (without parser) took 843813.73 ms. Allocated memory was 314.6 MB in the beginning and 14.7 GB in the end (delta: 14.4 GB). Free memory was 294.8 MB in the beginning and 9.6 GB in the end (delta: -9.3 GB). Peak memory consumption was 5.1 GB. Max. memory is 16.0 GB. [2021-03-24 22:49:45,757 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 314.6 MB. Free memory was 295.9 MB in the beginning and 295.8 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:49:45,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.77 ms. Allocated memory is still 314.6 MB. Free memory was 294.8 MB in the beginning and 293.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:49:45,757 INFO L168 Benchmark]: Boogie Preprocessor took 9.36 ms. Allocated memory is still 314.6 MB. Free memory was 293.3 MB in the beginning and 292.4 MB in the end (delta: 876.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:49:45,757 INFO L168 Benchmark]: RCFGBuilder took 210.41 ms. Allocated memory is still 314.6 MB. Free memory was 292.4 MB in the beginning and 281.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-24 22:49:45,763 INFO L168 Benchmark]: TraceAbstraction took 843555.96 ms. Allocated memory was 314.6 MB in the beginning and 14.7 GB in the end (delta: 14.4 GB). Free memory was 281.1 MB in the beginning and 9.6 GB in the end (delta: -9.3 GB). Peak memory consumption was 5.1 GB. Max. memory is 16.0 GB. [2021-03-24 22:49:45,764 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 0.10 ms. Allocated memory is still 314.6 MB. Free memory was 295.9 MB in the beginning and 295.8 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.77 ms. Allocated memory is still 314.6 MB. Free memory was 294.8 MB in the beginning and 293.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.36 ms. Allocated memory is still 314.6 MB. Free memory was 293.3 MB in the beginning and 292.4 MB in the end (delta: 876.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 210.41 ms. Allocated memory is still 314.6 MB. Free memory was 292.4 MB in the beginning and 281.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 843555.96 ms. Allocated memory was 314.6 MB in the beginning and 14.7 GB in the end (delta: 14.4 GB). Free memory was 281.1 MB in the beginning and 9.6 GB in the end (delta: -9.3 GB). Peak memory consumption was 5.1 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 122.1ms, 51 PlacesBefore, 44 PlacesAfterwards, 71 TransitionsBefore, 64 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 357 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 357, positive: 357, positive conditional: 0, positive unconditional: 357, 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: 357, positive: 357, positive conditional: 0, positive unconditional: 357, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 357, positive: 357, positive conditional: 0, positive unconditional: 357, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 357, positive: 357, positive conditional: 0, positive unconditional: 357, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 357, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 357, unknown conditional: 0, unknown unconditional: 357] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 27). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 71/87 universal loopers) in iteration 129,while PetriNetUnfolder was constructing finite prefix that currently has 83555 conditions, 8634 events (523/8633 cut-off events. For 487375/498761 co-relation queries the response was YES. Maximal size of possible extension queue 1488. Compared 156172 event pairs, 523 based on Foata normal form. 74/9092 useless extension candidates. Maximal degree in co-relation 83388. Up to 1349 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 28.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 843439.8ms, OverallIterations: 129, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 826847.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 318.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2815 SDtfs, 4353 SDslu, 2755 SDs, 0 SdLazy, 4885 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3125.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1125 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 990 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 16475.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=52898occurred in iteration=128, InterpolantAutomatonStates: 1116, 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: 98.9ms SsaConstructionTime, 188.1ms SatisfiabilityAnalysisTime, 15431.5ms InterpolantComputationTime, 2838 NumberOfCodeBlocks, 2838 NumberOfCodeBlocksAsserted, 129 NumberOfCheckSat, 2709 ConstructedInterpolants, 0 QuantifiedInterpolants, 76666 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 129 InterpolantComputations, 129 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown