/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 14:38:14,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 14:38:14,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 14:38:15,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 14:38:15,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 14:38:15,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 14:38:15,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 14:38:15,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 14:38:15,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 14:38:15,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 14:38:15,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 14:38:15,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 14:38:15,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 14:38:15,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 14:38:15,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 14:38:15,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 14:38:15,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 14:38:15,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 14:38:15,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 14:38:15,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 14:38:15,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 14:38:15,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 14:38:15,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 14:38:15,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 14:38:15,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 14:38:15,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 14:38:15,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 14:38:15,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 14:38:15,074 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-NoLbe.epf [2021-06-10 14:38:15,111 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 14:38:15,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 14:38:15,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 14:38:15,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 14:38:15,114 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 14:38:15,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 14:38:15,114 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 14:38:15,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 14:38:15,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 14:38:15,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 14:38:15,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 14:38:15,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 14:38:15,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 14:38:15,116 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 14:38:15,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 14:38:15,116 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 14:38:15,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 14:38:15,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 14:38:15,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 14:38:15,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 14:38:15,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 14:38:15,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 14:38:15,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 14:38:15,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 14:38:15,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 14:38:15,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 14:38:15,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 14:38:15,118 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 14:38:15,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 14:38:15,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 14:38:15,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 14:38:15,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 14:38:15,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 14:38:15,443 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 14:38:15,444 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 14:38:15,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl [2021-06-10 14:38:15,445 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl' [2021-06-10 14:38:15,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 14:38:15,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 14:38:15,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 14:38:15,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 14:38:15,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 14:38:15,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:15" (1/1) ... [2021-06-10 14:38:15,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:15" (1/1) ... [2021-06-10 14:38:15,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 14:38:15,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 14:38:15,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 14:38:15,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 14:38:15,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:15" (1/1) ... [2021-06-10 14:38:15,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:15" (1/1) ... [2021-06-10 14:38:15,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:15" (1/1) ... [2021-06-10 14:38:15,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:15" (1/1) ... [2021-06-10 14:38:15,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:15" (1/1) ... [2021-06-10 14:38:15,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:15" (1/1) ... [2021-06-10 14:38:15,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:15" (1/1) ... [2021-06-10 14:38:15,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 14:38:15,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 14:38:15,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 14:38:15,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 14:38:15,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 14:38:15,558 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-10 14:38:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-10 14:38:15,559 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-10 14:38:15,559 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-10 14:38:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-10 14:38:15,559 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-10 14:38:15,559 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-10 14:38:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-10 14:38:15,560 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-10 14:38:15,560 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-10 14:38:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-10 14:38:15,560 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-10 14:38:15,561 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-10 14:38:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-10 14:38:15,561 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-10 14:38:15,561 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-06-10 14:38:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-06-10 14:38:15,561 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-06-10 14:38:15,561 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 14:38:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 14:38:15,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 14:38:15,562 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-10 14:38:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-10 14:38:15,562 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-10 14:38:15,562 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-06-10 14:38:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-06-10 14:38:15,562 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-06-10 14:38:15,563 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-06-10 14:38:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-06-10 14:38:15,563 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-06-10 14:38:15,563 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-06-10 14:38:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-06-10 14:38:15,563 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-06-10 14:38:15,564 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-06-10 14:38:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-06-10 14:38:15,564 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-06-10 14:38:15,565 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 14:38:15,768 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 14:38:15,769 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-10 14:38:15,770 INFO L202 PluginConnector]: Adding new model example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:38:15 BoogieIcfgContainer [2021-06-10 14:38:15,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 14:38:15,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 14:38:15,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 14:38:15,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 14:38:15,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:15" (1/2) ... [2021-06-10 14:38:15,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524efba3 and model type example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 02:38:15, skipping insertion in model container [2021-06-10 14:38:15,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:38:15" (2/2) ... [2021-06-10 14:38:15,793 INFO L111 eAbstractionObserver]: Analyzing ICFG example_11.bpl [2021-06-10 14:38:15,798 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 14:38:15,801 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 14:38:15,802 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 14:38:15,967 INFO L149 ThreadInstanceAdder]: Constructed 121 joinOtherThreadTransitions. [2021-06-10 14:38:15,991 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-06-10 14:38:16,019 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 14:38:16,019 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 14:38:16,019 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 14:38:16,019 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 14:38:16,019 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 14:38:16,019 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 14:38:16,020 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 14:38:16,020 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 14:38:16,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 168 transitions, 754 flow [2021-06-10 14:38:17,309 INFO L129 PetriNetUnfolder]: 9217/11300 cut-off events. [2021-06-10 14:38:17,310 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2021-06-10 14:38:17,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22598 conditions, 11300 events. 9217/11300 cut-off events. For 11264/11264 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 45968 event pairs, 0 based on Foata normal form. 0/11299 useless extension candidates. Maximal degree in co-relation 10292. Up to 2772 conditions per place. [2021-06-10 14:38:17,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 168 transitions, 754 flow [2021-06-10 14:38:17,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 155 transitions, 706 flow [2021-06-10 14:38:18,329 INFO L129 PetriNetUnfolder]: 9217/11297 cut-off events. [2021-06-10 14:38:18,329 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2021-06-10 14:38:18,330 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:18,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:18,331 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:38:18,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:18,340 INFO L82 PathProgramCache]: Analyzing trace with hash 647344664, now seen corresponding path program 1 times [2021-06-10 14:38:18,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:18,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185180032] [2021-06-10 14:38:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:18,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:18,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:18,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:18,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:18,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:18,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:18,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185180032] [2021-06-10 14:38:18,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:18,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:18,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225533155] [2021-06-10 14:38:18,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:18,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:18,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:18,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:18,536 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 168 [2021-06-10 14:38:18,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 155 transitions, 706 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:18,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:18,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 168 [2021-06-10 14:38:18,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:19,348 INFO L129 PetriNetUnfolder]: 6657/8352 cut-off events. [2021-06-10 14:38:19,349 INFO L130 PetriNetUnfolder]: For 10753/10753 co-relation queries the response was YES. [2021-06-10 14:38:19,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17344 conditions, 8352 events. 6657/8352 cut-off events. For 10753/10753 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 36663 event pairs, 0 based on Foata normal form. 386/8738 useless extension candidates. Maximal degree in co-relation 10277. Up to 2310 conditions per place. [2021-06-10 14:38:19,439 INFO L132 encePairwiseOnDemand]: 162/168 looper letters, 6 selfloop transitions, 1 changer transitions 0/150 dead transitions. [2021-06-10 14:38:19,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 150 transitions, 695 flow [2021-06-10 14:38:19,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2021-06-10 14:38:19,456 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9523809523809523 [2021-06-10 14:38:19,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2021-06-10 14:38:19,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2021-06-10 14:38:19,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:19,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2021-06-10 14:38:19,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:19,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:19,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:19,483 INFO L185 Difference]: Start difference. First operand has 79 places, 155 transitions, 706 flow. Second operand 3 states and 480 transitions. [2021-06-10 14:38:19,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 150 transitions, 695 flow [2021-06-10 14:38:19,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 150 transitions, 441 flow, removed 0 selfloop flow, removed 22 redundant places. [2021-06-10 14:38:19,585 INFO L241 Difference]: Finished difference. Result has 59 places, 150 transitions, 429 flow [2021-06-10 14:38:19,587 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=429, PETRI_PLACES=59, PETRI_TRANSITIONS=150} [2021-06-10 14:38:19,588 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, -20 predicate places. [2021-06-10 14:38:19,588 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 150 transitions, 429 flow [2021-06-10 14:38:19,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:19,589 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:19,590 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:19,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 14:38:19,590 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:38:19,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:19,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1525982910, now seen corresponding path program 1 times [2021-06-10 14:38:19,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:19,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17184805] [2021-06-10 14:38:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:19,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:19,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:19,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:19,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:19,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:19,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:19,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17184805] [2021-06-10 14:38:19,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:19,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:19,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469452383] [2021-06-10 14:38:19,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:19,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:19,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:19,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:19,656 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 168 [2021-06-10 14:38:19,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 150 transitions, 429 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:19,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:19,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 168 [2021-06-10 14:38:19,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:19,992 INFO L129 PetriNetUnfolder]: 3930/5117 cut-off events. [2021-06-10 14:38:19,992 INFO L130 PetriNetUnfolder]: For 768/768 co-relation queries the response was YES. [2021-06-10 14:38:20,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5519 conditions, 5117 events. 3930/5117 cut-off events. For 768/768 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 24619 event pairs, 0 based on Foata normal form. 382/5499 useless extension candidates. Maximal degree in co-relation 5503. Up to 1320 conditions per place. [2021-06-10 14:38:20,034 INFO L132 encePairwiseOnDemand]: 161/168 looper letters, 5 selfloop transitions, 1 changer transitions 0/144 dead transitions. [2021-06-10 14:38:20,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 144 transitions, 423 flow [2021-06-10 14:38:20,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2021-06-10 14:38:20,036 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9523809523809523 [2021-06-10 14:38:20,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:20,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,041 INFO L185 Difference]: Start difference. First operand has 59 places, 150 transitions, 429 flow. Second operand 3 states and 480 transitions. [2021-06-10 14:38:20,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 144 transitions, 423 flow [2021-06-10 14:38:20,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 144 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:20,047 INFO L241 Difference]: Finished difference. Result has 60 places, 144 transitions, 412 flow [2021-06-10 14:38:20,048 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=60, PETRI_TRANSITIONS=144} [2021-06-10 14:38:20,048 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, -19 predicate places. [2021-06-10 14:38:20,048 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 144 transitions, 412 flow [2021-06-10 14:38:20,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,049 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:20,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:20,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 14:38:20,050 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:38:20,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:20,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1064675312, now seen corresponding path program 1 times [2021-06-10 14:38:20,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:20,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175344890] [2021-06-10 14:38:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:20,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:20,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:20,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:20,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175344890] [2021-06-10 14:38:20,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:20,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:20,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148088449] [2021-06-10 14:38:20,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:20,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:20,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:20,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:20,107 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 168 [2021-06-10 14:38:20,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 144 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:20,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 168 [2021-06-10 14:38:20,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:20,283 INFO L129 PetriNetUnfolder]: 1794/2482 cut-off events. [2021-06-10 14:38:20,283 INFO L130 PetriNetUnfolder]: For 479/479 co-relation queries the response was YES. [2021-06-10 14:38:20,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2675 conditions, 2482 events. 1794/2482 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 11677 event pairs, 0 based on Foata normal form. 303/2785 useless extension candidates. Maximal degree in co-relation 2659. Up to 495 conditions per place. [2021-06-10 14:38:20,297 INFO L132 encePairwiseOnDemand]: 160/168 looper letters, 4 selfloop transitions, 1 changer transitions 0/137 dead transitions. [2021-06-10 14:38:20,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 137 transitions, 401 flow [2021-06-10 14:38:20,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2021-06-10 14:38:20,299 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9523809523809523 [2021-06-10 14:38:20,299 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:20,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,304 INFO L185 Difference]: Start difference. First operand has 60 places, 144 transitions, 412 flow. Second operand 3 states and 480 transitions. [2021-06-10 14:38:20,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 137 transitions, 401 flow [2021-06-10 14:38:20,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 137 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:20,309 INFO L241 Difference]: Finished difference. Result has 61 places, 137 transitions, 392 flow [2021-06-10 14:38:20,309 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=61, PETRI_TRANSITIONS=137} [2021-06-10 14:38:20,309 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, -18 predicate places. [2021-06-10 14:38:20,309 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 137 transitions, 392 flow [2021-06-10 14:38:20,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,310 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:20,310 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:20,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 14:38:20,310 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:38:20,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:20,311 INFO L82 PathProgramCache]: Analyzing trace with hash -103511174, now seen corresponding path program 1 times [2021-06-10 14:38:20,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:20,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709200334] [2021-06-10 14:38:20,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:20,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:20,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:20,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:20,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:20,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709200334] [2021-06-10 14:38:20,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:20,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:20,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60669049] [2021-06-10 14:38:20,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:20,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:20,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:20,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:20,349 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 168 [2021-06-10 14:38:20,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 137 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:20,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 168 [2021-06-10 14:38:20,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:20,467 INFO L129 PetriNetUnfolder]: 1640/2299 cut-off events. [2021-06-10 14:38:20,467 INFO L130 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2021-06-10 14:38:20,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 2299 events. 1640/2299 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10614 event pairs, 0 based on Foata normal form. 29/2328 useless extension candidates. Maximal degree in co-relation 2511. Up to 495 conditions per place. [2021-06-10 14:38:20,483 INFO L132 encePairwiseOnDemand]: 164/168 looper letters, 8 selfloop transitions, 1 changer transitions 0/134 dead transitions. [2021-06-10 14:38:20,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 134 transitions, 401 flow [2021-06-10 14:38:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2021-06-10 14:38:20,485 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9523809523809523 [2021-06-10 14:38:20,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:20,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,488 INFO L185 Difference]: Start difference. First operand has 61 places, 137 transitions, 392 flow. Second operand 3 states and 480 transitions. [2021-06-10 14:38:20,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 134 transitions, 401 flow [2021-06-10 14:38:20,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 134 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:20,495 INFO L241 Difference]: Finished difference. Result has 62 places, 134 transitions, 384 flow [2021-06-10 14:38:20,496 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=62, PETRI_TRANSITIONS=134} [2021-06-10 14:38:20,496 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, -17 predicate places. [2021-06-10 14:38:20,497 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 134 transitions, 384 flow [2021-06-10 14:38:20,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,498 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:20,498 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:20,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 14:38:20,498 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:38:20,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:20,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1685542406, now seen corresponding path program 1 times [2021-06-10 14:38:20,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:20,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346109679] [2021-06-10 14:38:20,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:20,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:20,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:20,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:20,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346109679] [2021-06-10 14:38:20,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:20,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:20,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139053338] [2021-06-10 14:38:20,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:20,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:20,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:20,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:20,544 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 168 [2021-06-10 14:38:20,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 134 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:20,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 168 [2021-06-10 14:38:20,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:20,603 INFO L129 PetriNetUnfolder]: 429/691 cut-off events. [2021-06-10 14:38:20,603 INFO L130 PetriNetUnfolder]: For 218/218 co-relation queries the response was YES. [2021-06-10 14:38:20,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 691 events. 429/691 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2880 event pairs, 0 based on Foata normal form. 207/898 useless extension candidates. Maximal degree in co-relation 709. Up to 108 conditions per place. [2021-06-10 14:38:20,607 INFO L132 encePairwiseOnDemand]: 158/168 looper letters, 2 selfloop transitions, 1 changer transitions 0/125 dead transitions. [2021-06-10 14:38:20,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 125 transitions, 363 flow [2021-06-10 14:38:20,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2021-06-10 14:38:20,609 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9523809523809523 [2021-06-10 14:38:20,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:20,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,612 INFO L185 Difference]: Start difference. First operand has 62 places, 134 transitions, 384 flow. Second operand 3 states and 480 transitions. [2021-06-10 14:38:20,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 125 transitions, 363 flow [2021-06-10 14:38:20,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 125 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:20,615 INFO L241 Difference]: Finished difference. Result has 63 places, 125 transitions, 358 flow [2021-06-10 14:38:20,616 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=63, PETRI_TRANSITIONS=125} [2021-06-10 14:38:20,616 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, -16 predicate places. [2021-06-10 14:38:20,616 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 125 transitions, 358 flow [2021-06-10 14:38:20,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,616 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:20,617 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:20,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 14:38:20,617 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:38:20,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:20,618 INFO L82 PathProgramCache]: Analyzing trace with hash -360899940, now seen corresponding path program 1 times [2021-06-10 14:38:20,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:20,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898322537] [2021-06-10 14:38:20,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:20,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:20,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:20,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:20,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:20,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898322537] [2021-06-10 14:38:20,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:20,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:20,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232968592] [2021-06-10 14:38:20,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:20,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:20,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:20,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:20,661 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 168 [2021-06-10 14:38:20,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 125 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:20,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 168 [2021-06-10 14:38:20,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:20,686 INFO L129 PetriNetUnfolder]: 95/202 cut-off events. [2021-06-10 14:38:20,686 INFO L130 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2021-06-10 14:38:20,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 202 events. 95/202 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 685 event pairs, 0 based on Foata normal form. 72/274 useless extension candidates. Maximal degree in co-relation 211. Up to 30 conditions per place. [2021-06-10 14:38:20,688 INFO L132 encePairwiseOnDemand]: 157/168 looper letters, 1 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2021-06-10 14:38:20,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 96 transitions, 275 flow [2021-06-10 14:38:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:20,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2021-06-10 14:38:20,689 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9523809523809523 [2021-06-10 14:38:20,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:20,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2021-06-10 14:38:20,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,693 INFO L185 Difference]: Start difference. First operand has 63 places, 125 transitions, 358 flow. Second operand 3 states and 480 transitions. [2021-06-10 14:38:20,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 96 transitions, 275 flow [2021-06-10 14:38:20,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 96 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:20,696 INFO L241 Difference]: Finished difference. Result has 64 places, 96 transitions, 272 flow [2021-06-10 14:38:20,696 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=64, PETRI_TRANSITIONS=96} [2021-06-10 14:38:20,696 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, -15 predicate places. [2021-06-10 14:38:20,696 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 96 transitions, 272 flow [2021-06-10 14:38:20,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,697 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:20,698 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:20,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 14:38:20,698 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:38:20,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:20,698 INFO L82 PathProgramCache]: Analyzing trace with hash 340327912, now seen corresponding path program 1 times [2021-06-10 14:38:20,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:20,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750382588] [2021-06-10 14:38:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:20,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:20,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:20,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:20,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750382588] [2021-06-10 14:38:20,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:20,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:20,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225790967] [2021-06-10 14:38:20,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:20,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:20,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:20,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:20,748 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 168 [2021-06-10 14:38:20,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 96 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:20,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 168 [2021-06-10 14:38:20,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:20,767 INFO L129 PetriNetUnfolder]: 21/81 cut-off events. [2021-06-10 14:38:20,767 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-06-10 14:38:20,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 81 events. 21/81 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 173 event pairs, 0 based on Foata normal form. 23/104 useless extension candidates. Maximal degree in co-relation 91. Up to 12 conditions per place. [2021-06-10 14:38:20,768 INFO L132 encePairwiseOnDemand]: 159/168 looper letters, 1 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2021-06-10 14:38:20,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 174 flow [2021-06-10 14:38:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:20,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2021-06-10 14:38:20,769 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9484126984126984 [2021-06-10 14:38:20,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2021-06-10 14:38:20,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2021-06-10 14:38:20,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:20,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2021-06-10 14:38:20,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,772 INFO L185 Difference]: Start difference. First operand has 64 places, 96 transitions, 272 flow. Second operand 3 states and 478 transitions. [2021-06-10 14:38:20,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 174 flow [2021-06-10 14:38:20,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 62 transitions, 173 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:20,774 INFO L241 Difference]: Finished difference. Result has 65 places, 62 transitions, 171 flow [2021-06-10 14:38:20,774 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2021-06-10 14:38:20,774 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, -14 predicate places. [2021-06-10 14:38:20,774 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 171 flow [2021-06-10 14:38:20,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,774 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:20,775 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:20,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 14:38:20,775 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:38:20,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:20,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1352574620, now seen corresponding path program 1 times [2021-06-10 14:38:20,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:20,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51727570] [2021-06-10 14:38:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:20,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:20,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:20,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:20,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51727570] [2021-06-10 14:38:20,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:20,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:20,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115924191] [2021-06-10 14:38:20,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:20,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:20,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:20,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:20,817 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 168 [2021-06-10 14:38:20,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:20,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 168 [2021-06-10 14:38:20,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:20,828 INFO L129 PetriNetUnfolder]: 12/68 cut-off events. [2021-06-10 14:38:20,829 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-06-10 14:38:20,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 68 events. 12/68 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs, 0 based on Foata normal form. 4/72 useless extension candidates. Maximal degree in co-relation 82. Up to 8 conditions per place. [2021-06-10 14:38:20,829 INFO L132 encePairwiseOnDemand]: 165/168 looper letters, 3 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2021-06-10 14:38:20,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 173 flow [2021-06-10 14:38:20,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:20,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2021-06-10 14:38:20,831 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9404761904761905 [2021-06-10 14:38:20,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2021-06-10 14:38:20,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2021-06-10 14:38:20,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:20,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2021-06-10 14:38:20,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,834 INFO L185 Difference]: Start difference. First operand has 65 places, 62 transitions, 171 flow. Second operand 3 states and 474 transitions. [2021-06-10 14:38:20,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 173 flow [2021-06-10 14:38:20,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:20,835 INFO L241 Difference]: Finished difference. Result has 66 places, 60 transitions, 166 flow [2021-06-10 14:38:20,836 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2021-06-10 14:38:20,836 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, -13 predicate places. [2021-06-10 14:38:20,836 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 166 flow [2021-06-10 14:38:20,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:20,836 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:20,836 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:20,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 14:38:20,837 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:38:20,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:20,837 INFO L82 PathProgramCache]: Analyzing trace with hash -528706750, now seen corresponding path program 1 times [2021-06-10 14:38:20,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:20,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557738717] [2021-06-10 14:38:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:20,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:20,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:20,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:20,980 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 14:38:20,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 14:38:20,995 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:38:20,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:38:21,019 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:38:21,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:38:21,050 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-10 14:38:21,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:38:21,112 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-06-10 14:38:21,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:38:21,174 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-10 14:38:21,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-10 14:38:21,214 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-10 14:38:21,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-10 14:38:21,267 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-10 14:38:21,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-10 14:38:21,329 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-06-10 14:38:21,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-10 14:38:21,415 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-06-10 14:38:21,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-06-10 14:38:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:21,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557738717] [2021-06-10 14:38:21,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:21,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-10 14:38:21,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671538284] [2021-06-10 14:38:21,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-10 14:38:21,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:21,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-10 14:38:21,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-06-10 14:38:21,477 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 168 [2021-06-10 14:38:21,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 166 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:21,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:21,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 168 [2021-06-10 14:38:21,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:23,270 INFO L129 PetriNetUnfolder]: 12858/20017 cut-off events. [2021-06-10 14:38:23,270 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 14:38:23,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35410 conditions, 20017 events. 12858/20017 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1524. Compared 148613 event pairs, 4097 based on Foata normal form. 1/19486 useless extension candidates. Maximal degree in co-relation 35400. Up to 5633 conditions per place. [2021-06-10 14:38:23,518 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 65 selfloop transitions, 11 changer transitions 0/124 dead transitions. [2021-06-10 14:38:23,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 124 transitions, 446 flow [2021-06-10 14:38:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 14:38:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 14:38:23,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-06-10 14:38:23,523 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9578754578754579 [2021-06-10 14:38:23,524 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-06-10 14:38:23,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-06-10 14:38:23,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:23,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-06-10 14:38:23,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:23,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:23,532 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:23,532 INFO L185 Difference]: Start difference. First operand has 66 places, 60 transitions, 166 flow. Second operand 13 states and 2092 transitions. [2021-06-10 14:38:23,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 124 transitions, 446 flow [2021-06-10 14:38:23,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 124 transitions, 445 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:23,534 INFO L241 Difference]: Finished difference. Result has 88 places, 70 transitions, 250 flow [2021-06-10 14:38:23,535 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=250, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2021-06-10 14:38:23,535 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, 9 predicate places. [2021-06-10 14:38:23,535 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 250 flow [2021-06-10 14:38:23,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:23,537 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:23,537 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:23,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 14:38:23,538 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:38:23,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:23,538 INFO L82 PathProgramCache]: Analyzing trace with hash 2118700606, now seen corresponding path program 2 times [2021-06-10 14:38:23,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:23,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367279504] [2021-06-10 14:38:23,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:23,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:23,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:23,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:23,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:23,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:23,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:38:23,643 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:38:23,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:38:23,656 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:38:23,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:38:23,676 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:38:23,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:38:23,708 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:38:23,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:38:23,741 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-10 14:38:23,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-10 14:38:23,779 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-10 14:38:23,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-10 14:38:23,825 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-10 14:38:23,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-10 14:38:23,881 INFO L142 QuantifierPusher]: treesize reduction 81, result has 49.4 percent of original size [2021-06-10 14:38:23,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-06-10 14:38:23,947 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-06-10 14:38:23,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-06-10 14:38:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:24,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367279504] [2021-06-10 14:38:24,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:24,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-10 14:38:24,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080159578] [2021-06-10 14:38:24,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-10 14:38:24,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:24,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-10 14:38:24,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-06-10 14:38:24,012 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 168 [2021-06-10 14:38:24,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 250 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:24,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:24,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 168 [2021-06-10 14:38:24,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:28,110 INFO L129 PetriNetUnfolder]: 23622/43040 cut-off events. [2021-06-10 14:38:28,111 INFO L130 PetriNetUnfolder]: For 26194/26194 co-relation queries the response was YES. [2021-06-10 14:38:28,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89574 conditions, 43040 events. 23622/43040 cut-off events. For 26194/26194 co-relation queries the response was YES. Maximal size of possible extension queue 2858. Compared 439800 event pairs, 4097 based on Foata normal form. 1/41768 useless extension candidates. Maximal degree in co-relation 89553. Up to 9190 conditions per place. [2021-06-10 14:38:28,675 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 81 selfloop transitions, 17 changer transitions 0/146 dead transitions. [2021-06-10 14:38:28,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 146 transitions, 784 flow [2021-06-10 14:38:28,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 14:38:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 14:38:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-06-10 14:38:28,680 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9578754578754579 [2021-06-10 14:38:28,680 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-06-10 14:38:28,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-06-10 14:38:28,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:28,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-06-10 14:38:28,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:28,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:28,693 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:28,693 INFO L185 Difference]: Start difference. First operand has 88 places, 70 transitions, 250 flow. Second operand 13 states and 2092 transitions. [2021-06-10 14:38:28,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 146 transitions, 784 flow [2021-06-10 14:38:28,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 146 transitions, 773 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:28,712 INFO L241 Difference]: Finished difference. Result has 110 places, 84 transitions, 409 flow [2021-06-10 14:38:28,712 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=409, PETRI_PLACES=110, PETRI_TRANSITIONS=84} [2021-06-10 14:38:28,713 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, 31 predicate places. [2021-06-10 14:38:28,713 INFO L480 AbstractCegarLoop]: Abstraction has has 110 places, 84 transitions, 409 flow [2021-06-10 14:38:28,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:28,714 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:28,714 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:28,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 14:38:28,714 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:38:28,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:28,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1773590508, now seen corresponding path program 3 times [2021-06-10 14:38:28,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:28,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312368391] [2021-06-10 14:38:28,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:28,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:28,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:28,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:28,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:28,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:28,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:38:28,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:38:28,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:38:28,799 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:38:28,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:38:28,814 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:38:28,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:38:28,836 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:38:28,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:38:28,867 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-10 14:38:28,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-10 14:38:28,908 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-10 14:38:28,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-10 14:38:28,958 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-06-10 14:38:28,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-06-10 14:38:29,006 INFO L142 QuantifierPusher]: treesize reduction 81, result has 49.4 percent of original size [2021-06-10 14:38:29,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-06-10 14:38:29,083 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-06-10 14:38:29,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-06-10 14:38:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:29,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312368391] [2021-06-10 14:38:29,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:29,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-10 14:38:29,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389662076] [2021-06-10 14:38:29,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-10 14:38:29,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:29,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-10 14:38:29,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-06-10 14:38:29,138 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 168 [2021-06-10 14:38:29,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 84 transitions, 409 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:29,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:29,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 168 [2021-06-10 14:38:29,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:35,706 INFO L129 PetriNetUnfolder]: 32019/60108 cut-off events. [2021-06-10 14:38:35,706 INFO L130 PetriNetUnfolder]: For 106229/107086 co-relation queries the response was YES. [2021-06-10 14:38:36,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157876 conditions, 60108 events. 32019/60108 cut-off events. For 106229/107086 co-relation queries the response was YES. Maximal size of possible extension queue 4476. Compared 664825 event pairs, 7462 based on Foata normal form. 1/58267 useless extension candidates. Maximal degree in co-relation 157844. Up to 11784 conditions per place. [2021-06-10 14:38:36,617 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 124 selfloop transitions, 31 changer transitions 0/203 dead transitions. [2021-06-10 14:38:36,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 203 transitions, 1567 flow [2021-06-10 14:38:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 14:38:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 14:38:36,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-06-10 14:38:36,621 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9578754578754579 [2021-06-10 14:38:36,621 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-06-10 14:38:36,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-06-10 14:38:36,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:36,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-06-10 14:38:36,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:36,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:36,630 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:36,631 INFO L185 Difference]: Start difference. First operand has 110 places, 84 transitions, 409 flow. Second operand 13 states and 2092 transitions. [2021-06-10 14:38:36,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 203 transitions, 1567 flow [2021-06-10 14:38:36,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 203 transitions, 1527 flow, removed 10 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:36,886 INFO L241 Difference]: Finished difference. Result has 132 places, 112 transitions, 786 flow [2021-06-10 14:38:36,886 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=786, PETRI_PLACES=132, PETRI_TRANSITIONS=112} [2021-06-10 14:38:36,887 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, 53 predicate places. [2021-06-10 14:38:36,887 INFO L480 AbstractCegarLoop]: Abstraction has has 132 places, 112 transitions, 786 flow [2021-06-10 14:38:36,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:36,888 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:36,888 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:36,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-10 14:38:36,888 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:38:36,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:36,888 INFO L82 PathProgramCache]: Analyzing trace with hash 113115220, now seen corresponding path program 4 times [2021-06-10 14:38:36,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:36,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971754710] [2021-06-10 14:38:36,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:36,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:36,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:36,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:36,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:36,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:36,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:38:36,953 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 14:38:36,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 14:38:36,965 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:38:36,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:38:36,980 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:38:36,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:38:37,003 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:38:37,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:38:37,033 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-10 14:38:37,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-10 14:38:37,076 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-06-10 14:38:37,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-10 14:38:37,112 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-10 14:38:37,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-10 14:38:37,310 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-06-10 14:38:37,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-10 14:38:37,382 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-06-10 14:38:37,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-06-10 14:38:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:37,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971754710] [2021-06-10 14:38:37,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:37,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-10 14:38:37,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945258515] [2021-06-10 14:38:37,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-10 14:38:37,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:37,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-10 14:38:37,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-06-10 14:38:37,442 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 168 [2021-06-10 14:38:37,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 112 transitions, 786 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:37,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:37,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 168 [2021-06-10 14:38:37,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:48,640 INFO L129 PetriNetUnfolder]: 44736/87266 cut-off events. [2021-06-10 14:38:48,640 INFO L130 PetriNetUnfolder]: For 293318/294576 co-relation queries the response was YES. [2021-06-10 14:38:49,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 268892 conditions, 87266 events. 44736/87266 cut-off events. For 293318/294576 co-relation queries the response was YES. Maximal size of possible extension queue 6785. Compared 1055686 event pairs, 10076 based on Foata normal form. 1/84353 useless extension candidates. Maximal degree in co-relation 268849. Up to 16706 conditions per place. [2021-06-10 14:38:50,438 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 166 selfloop transitions, 55 changer transitions 0/269 dead transitions. [2021-06-10 14:38:50,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 269 transitions, 2744 flow [2021-06-10 14:38:50,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 14:38:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 14:38:50,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-06-10 14:38:50,443 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9578754578754579 [2021-06-10 14:38:50,443 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-06-10 14:38:50,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-06-10 14:38:50,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:50,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-06-10 14:38:50,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:50,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:50,453 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:50,453 INFO L185 Difference]: Start difference. First operand has 132 places, 112 transitions, 786 flow. Second operand 13 states and 2092 transitions. [2021-06-10 14:38:50,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 269 transitions, 2744 flow [2021-06-10 14:38:51,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 269 transitions, 2715 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:51,459 INFO L241 Difference]: Finished difference. Result has 154 places, 162 transitions, 1612 flow [2021-06-10 14:38:51,459 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1612, PETRI_PLACES=154, PETRI_TRANSITIONS=162} [2021-06-10 14:38:51,459 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, 75 predicate places. [2021-06-10 14:38:51,459 INFO L480 AbstractCegarLoop]: Abstraction has has 154 places, 162 transitions, 1612 flow [2021-06-10 14:38:51,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:51,460 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:51,460 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:51,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-10 14:38:51,461 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:38:51,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:51,461 INFO L82 PathProgramCache]: Analyzing trace with hash 992532526, now seen corresponding path program 5 times [2021-06-10 14:38:51,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:51,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087318925] [2021-06-10 14:38:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:51,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:51,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:51,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:51,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:38:51,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:51,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:38:51,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:51,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:38:51,536 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:38:51,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:38:51,551 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:38:51,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:38:51,572 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:38:51,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:38:51,601 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-10 14:38:51,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-10 14:38:51,638 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-10 14:38:51,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-10 14:38:51,679 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-06-10 14:38:51,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-06-10 14:38:51,758 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-06-10 14:38:51,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-10 14:38:51,818 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-06-10 14:38:51,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-06-10 14:38:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:51,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087318925] [2021-06-10 14:38:51,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:51,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-10 14:38:51,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898844095] [2021-06-10 14:38:51,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-10 14:38:51,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:51,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-10 14:38:51,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-06-10 14:38:51,876 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 168 [2021-06-10 14:38:51,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 162 transitions, 1612 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:51,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:51,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 168 [2021-06-10 14:38:51,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:39:11,993 INFO L129 PetriNetUnfolder]: 61573/124069 cut-off events. [2021-06-10 14:39:11,993 INFO L130 PetriNetUnfolder]: For 652228/653957 co-relation queries the response was YES. [2021-06-10 14:39:13,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 435822 conditions, 124069 events. 61573/124069 cut-off events. For 652228/653957 co-relation queries the response was YES. Maximal size of possible extension queue 10063. Compared 1607639 event pairs, 13092 based on Foata normal form. 1/119589 useless extension candidates. Maximal degree in co-relation 435768. Up to 24245 conditions per place. [2021-06-10 14:39:14,782 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 245 selfloop transitions, 53 changer transitions 0/346 dead transitions. [2021-06-10 14:39:14,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 346 transitions, 4410 flow [2021-06-10 14:39:14,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 14:39:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 14:39:14,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-06-10 14:39:14,787 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9578754578754579 [2021-06-10 14:39:14,787 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-06-10 14:39:14,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-06-10 14:39:14,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:39:14,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-06-10 14:39:14,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:39:14,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:39:14,795 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:39:14,795 INFO L185 Difference]: Start difference. First operand has 154 places, 162 transitions, 1612 flow. Second operand 13 states and 2092 transitions. [2021-06-10 14:39:14,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 346 transitions, 4410 flow [2021-06-10 14:39:18,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 346 transitions, 4363 flow, removed 16 selfloop flow, removed 1 redundant places. [2021-06-10 14:39:18,808 INFO L241 Difference]: Finished difference. Result has 176 places, 195 transitions, 2239 flow [2021-06-10 14:39:18,809 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2239, PETRI_PLACES=176, PETRI_TRANSITIONS=195} [2021-06-10 14:39:18,809 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, 97 predicate places. [2021-06-10 14:39:18,809 INFO L480 AbstractCegarLoop]: Abstraction has has 176 places, 195 transitions, 2239 flow [2021-06-10 14:39:18,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:39:18,810 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:39:18,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:39:18,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-10 14:39:18,810 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:39:18,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:39:18,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1490152302, now seen corresponding path program 6 times [2021-06-10 14:39:18,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:39:18,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369631265] [2021-06-10 14:39:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:39:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:39:18,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:39:18,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:39:18,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:39:18,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:39:18,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:39:18,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:39:18,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:39:18,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:39:18,922 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:39:18,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:39:18,937 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:39:18,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:39:18,959 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 14:39:18,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 14:39:18,993 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-10 14:39:18,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-10 14:39:19,029 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-10 14:39:19,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-10 14:39:19,069 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-06-10 14:39:19,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-06-10 14:39:19,146 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-06-10 14:39:19,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-10 14:39:19,221 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-06-10 14:39:19,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-06-10 14:39:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:39:19,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369631265] [2021-06-10 14:39:19,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:39:19,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-10 14:39:19,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420536110] [2021-06-10 14:39:19,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-10 14:39:19,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:39:19,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-10 14:39:19,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-06-10 14:39:19,272 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 168 [2021-06-10 14:39:19,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 195 transitions, 2239 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:39:19,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:39:19,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 168 [2021-06-10 14:39:19,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:39:55,758 INFO L129 PetriNetUnfolder]: 87002/183043 cut-off events. [2021-06-10 14:39:55,759 INFO L130 PetriNetUnfolder]: For 1343670/1347732 co-relation queries the response was YES. [2021-06-10 14:39:59,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 703749 conditions, 183043 events. 87002/183043 cut-off events. For 1343670/1347732 co-relation queries the response was YES. Maximal size of possible extension queue 15280. Compared 2566448 event pairs, 19790 based on Foata normal form. 1/176137 useless extension candidates. Maximal degree in co-relation 703684. Up to 33341 conditions per place. [2021-06-10 14:40:00,559 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 330 selfloop transitions, 85 changer transitions 0/463 dead transitions. [2021-06-10 14:40:00,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 463 transitions, 6842 flow [2021-06-10 14:40:00,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 14:40:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 14:40:00,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-06-10 14:40:00,568 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9578754578754579 [2021-06-10 14:40:00,568 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-06-10 14:40:00,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-06-10 14:40:00,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:40:00,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-06-10 14:40:00,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:40:00,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:40:00,575 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:40:00,575 INFO L185 Difference]: Start difference. First operand has 176 places, 195 transitions, 2239 flow. Second operand 13 states and 2092 transitions. [2021-06-10 14:40:00,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 463 transitions, 6842 flow [2021-06-10 14:40:16,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 463 transitions, 6581 flow, removed 113 selfloop flow, removed 1 redundant places. [2021-06-10 14:40:16,927 INFO L241 Difference]: Finished difference. Result has 198 places, 267 transitions, 3612 flow [2021-06-10 14:40:16,927 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3612, PETRI_PLACES=198, PETRI_TRANSITIONS=267} [2021-06-10 14:40:16,927 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, 119 predicate places. [2021-06-10 14:40:16,927 INFO L480 AbstractCegarLoop]: Abstraction has has 198 places, 267 transitions, 3612 flow [2021-06-10 14:40:16,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:40:16,928 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:40:16,928 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:40:16,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-10 14:40:16,928 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:40:16,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:40:16,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1414546472, now seen corresponding path program 7 times [2021-06-10 14:40:16,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:40:16,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076211957] [2021-06-10 14:40:16,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:40:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:40:16,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:40:16,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:40:16,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:40:16,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:40:17,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:40:17,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:40:17,106 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2021-06-10 14:40:17,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:40:17,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 14:40:17,128 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:40:17,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:40:17,154 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:40:17,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:40:17,185 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:40:17,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:40:17,228 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-10 14:40:17,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-10 14:40:17,269 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-06-10 14:40:17,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-10 14:40:17,335 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-06-10 14:40:17,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-06-10 14:40:17,424 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-06-10 14:40:17,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-10 14:40:17,480 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-06-10 14:40:17,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-06-10 14:40:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:40:17,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076211957] [2021-06-10 14:40:17,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:40:17,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-10 14:40:17,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139076081] [2021-06-10 14:40:17,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-10 14:40:17,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:40:17,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-10 14:40:17,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-06-10 14:40:17,533 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 168 [2021-06-10 14:40:17,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 267 transitions, 3612 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:40:17,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:40:17,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 168 [2021-06-10 14:40:17,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:42:12,974 INFO L129 PetriNetUnfolder]: 178734/388663 cut-off events. [2021-06-10 14:42:12,975 INFO L130 PetriNetUnfolder]: For 2545198/2554929 co-relation queries the response was YES. [2021-06-10 14:42:21,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1226978 conditions, 388663 events. 178734/388663 cut-off events. For 2545198/2554929 co-relation queries the response was YES. Maximal size of possible extension queue 39796. Compared 6173984 event pairs, 28415 based on Foata normal form. 3/367414 useless extension candidates. Maximal degree in co-relation 1226902. Up to 57835 conditions per place. [2021-06-10 14:42:24,044 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 407 selfloop transitions, 147 changer transitions 0/602 dead transitions. [2021-06-10 14:42:24,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 602 transitions, 10108 flow [2021-06-10 14:42:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 14:42:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 14:42:24,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-06-10 14:42:24,047 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9578754578754579 [2021-06-10 14:42:24,047 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-06-10 14:42:24,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-06-10 14:42:24,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:42:24,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-06-10 14:42:24,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:42:24,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:42:24,053 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:42:24,053 INFO L185 Difference]: Start difference. First operand has 198 places, 267 transitions, 3612 flow. Second operand 13 states and 2092 transitions. [2021-06-10 14:42:24,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 602 transitions, 10108 flow [2021-06-10 14:43:17,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 602 transitions, 9875 flow, removed 105 selfloop flow, removed 1 redundant places. [2021-06-10 14:43:17,134 INFO L241 Difference]: Finished difference. Result has 220 places, 393 transitions, 6438 flow [2021-06-10 14:43:17,134 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=3501, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6438, PETRI_PLACES=220, PETRI_TRANSITIONS=393} [2021-06-10 14:43:17,134 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, 141 predicate places. [2021-06-10 14:43:17,134 INFO L480 AbstractCegarLoop]: Abstraction has has 220 places, 393 transitions, 6438 flow [2021-06-10 14:43:17,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:43:17,135 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:43:17,135 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:43:17,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-10 14:43:17,135 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:43:17,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:43:17,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2106309306, now seen corresponding path program 1 times [2021-06-10 14:43:17,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:43:17,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40387365] [2021-06-10 14:43:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:43:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:43:17,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:43:17,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:43:17,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:43:17,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:43:17,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:43:17,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:43:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:43:17,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40387365] [2021-06-10 14:43:17,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:43:17,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:43:17,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038764782] [2021-06-10 14:43:17,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:43:17,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:43:17,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:43:17,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:43:17,150 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 168 [2021-06-10 14:43:17,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 393 transitions, 6438 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:43:17,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:43:17,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 168 [2021-06-10 14:43:17,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:43:22,096 INFO L129 PetriNetUnfolder]: 568/19931 cut-off events. [2021-06-10 14:43:22,097 INFO L130 PetriNetUnfolder]: For 97686/102020 co-relation queries the response was YES. [2021-06-10 14:43:22,292 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53621 conditions, 19931 events. 568/19931 cut-off events. For 97686/102020 co-relation queries the response was YES. Maximal size of possible extension queue 1773. Compared 378722 event pairs, 0 based on Foata normal form. 2772/21019 useless extension candidates. Maximal degree in co-relation 53534. Up to 1352 conditions per place. [2021-06-10 14:43:22,318 INFO L132 encePairwiseOnDemand]: 163/168 looper letters, 1 selfloop transitions, 1 changer transitions 0/380 dead transitions. [2021-06-10 14:43:22,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 380 transitions, 6403 flow [2021-06-10 14:43:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:43:22,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:43:22,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2021-06-10 14:43:22,320 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9404761904761905 [2021-06-10 14:43:22,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2021-06-10 14:43:22,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2021-06-10 14:43:22,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:43:22,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2021-06-10 14:43:22,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:43:22,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:43:22,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:43:22,321 INFO L185 Difference]: Start difference. First operand has 220 places, 393 transitions, 6438 flow. Second operand 3 states and 474 transitions. [2021-06-10 14:43:22,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 380 transitions, 6403 flow [2021-06-10 14:43:25,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 380 transitions, 6272 flow, removed 55 selfloop flow, removed 1 redundant places. [2021-06-10 14:43:25,046 INFO L241 Difference]: Finished difference. Result has 221 places, 380 transitions, 6270 flow [2021-06-10 14:43:25,047 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=6268, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=6270, PETRI_PLACES=221, PETRI_TRANSITIONS=380} [2021-06-10 14:43:25,047 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, 142 predicate places. [2021-06-10 14:43:25,047 INFO L480 AbstractCegarLoop]: Abstraction has has 221 places, 380 transitions, 6270 flow [2021-06-10 14:43:25,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:43:25,047 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:43:25,047 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:43:25,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-10 14:43:25,048 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:43:25,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:43:25,048 INFO L82 PathProgramCache]: Analyzing trace with hash 79807950, now seen corresponding path program 8 times [2021-06-10 14:43:25,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:43:25,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527092499] [2021-06-10 14:43:25,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:43:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:43:25,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:43:25,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:43:25,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:43:25,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:43:25,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:43:25,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:43:25,095 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 14:43:25,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 14:43:25,113 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 14:43:25,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 14:43:25,138 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-10 14:43:25,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 14:43:25,177 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-06-10 14:43:25,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 14:43:25,223 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-06-10 14:43:25,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-10 14:43:25,274 INFO L142 QuantifierPusher]: treesize reduction 54, result has 55.4 percent of original size [2021-06-10 14:43:25,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-06-10 14:43:25,342 INFO L142 QuantifierPusher]: treesize reduction 63, result has 54.3 percent of original size [2021-06-10 14:43:25,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-06-10 14:43:25,415 INFO L142 QuantifierPusher]: treesize reduction 81, result has 49.4 percent of original size [2021-06-10 14:43:25,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-06-10 14:43:25,462 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-06-10 14:43:25,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-06-10 14:43:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:43:25,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527092499] [2021-06-10 14:43:25,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:43:25,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-10 14:43:25,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292038023] [2021-06-10 14:43:25,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-10 14:43:25,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:43:25,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-10 14:43:25,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-06-10 14:43:25,509 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 168 [2021-06-10 14:43:25,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 380 transitions, 6270 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:43:25,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:43:25,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 168 [2021-06-10 14:43:25,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:44:49,954 INFO L129 PetriNetUnfolder]: 95996/234899 cut-off events. [2021-06-10 14:44:49,954 INFO L130 PetriNetUnfolder]: For 3611061/3628372 co-relation queries the response was YES. [2021-06-10 14:44:56,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1308292 conditions, 234899 events. 95996/234899 cut-off events. For 3611061/3628372 co-relation queries the response was YES. Maximal size of possible extension queue 24625. Compared 3750005 event pairs, 29103 based on Foata normal form. 9/233465 useless extension candidates. Maximal degree in co-relation 1308205. Up to 62737 conditions per place. [2021-06-10 14:44:57,797 INFO L132 encePairwiseOnDemand]: 156/168 looper letters, 461 selfloop transitions, 135 changer transitions 0/631 dead transitions. [2021-06-10 14:44:57,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 631 transitions, 11514 flow [2021-06-10 14:44:57,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 14:44:57,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 14:44:57,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2092 transitions. [2021-06-10 14:44:57,799 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9578754578754579 [2021-06-10 14:44:57,799 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2092 transitions. [2021-06-10 14:44:57,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2092 transitions. [2021-06-10 14:44:57,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:44:57,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2092 transitions. [2021-06-10 14:44:57,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.92307692307693) internal successors, (2092), 13 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:44:57,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:44:57,804 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 168.0) internal successors, (2352), 14 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:44:57,804 INFO L185 Difference]: Start difference. First operand has 221 places, 380 transitions, 6270 flow. Second operand 13 states and 2092 transitions. [2021-06-10 14:44:57,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 631 transitions, 11514 flow [2021-06-10 14:46:38,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 631 transitions, 11513 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:46:38,892 INFO L241 Difference]: Finished difference. Result has 243 places, 412 transitions, 7283 flow [2021-06-10 14:46:38,892 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=6269, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7283, PETRI_PLACES=243, PETRI_TRANSITIONS=412} [2021-06-10 14:46:38,892 INFO L343 CegarLoopForPetriNet]: 79 programPoint places, 164 predicate places. [2021-06-10 14:46:38,892 INFO L480 AbstractCegarLoop]: Abstraction has has 243 places, 412 transitions, 7283 flow [2021-06-10 14:46:38,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:46:38,893 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:46:38,893 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:46:38,893 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-10 14:46:38,893 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-10 14:46:38,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:46:38,893 INFO L82 PathProgramCache]: Analyzing trace with hash -328856186, now seen corresponding path program 9 times [2021-06-10 14:46:38,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:46:38,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299839349] [2021-06-10 14:46:38,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:46:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:46:38,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:46:38,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:46:38,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:46:38,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 14:46:38,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:46:38,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 14:46:38,946 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 14:46:38,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 14:46:38,962 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 14:46:38,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 14:46:38,980 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 14:46:38,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 14:46:39,004 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 14:46:39,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 14:46:39,033 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-10 14:46:39,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-10 14:46:39,060 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-10 14:46:39,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-10 14:46:39,093 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-06-10 14:46:39,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-06-10 14:46:39,140 INFO L142 QuantifierPusher]: treesize reduction 81, result has 49.4 percent of original size [2021-06-10 14:46:39,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-06-10 14:46:39,190 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-06-10 14:46:39,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-06-10 14:46:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:46:39,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299839349] [2021-06-10 14:46:39,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:46:39,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-10 14:46:39,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840678712] [2021-06-10 14:46:39,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-10 14:46:39,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:46:39,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-10 14:46:39,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-06-10 14:46:39,241 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 168 [2021-06-10 14:46:39,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 412 transitions, 7283 flow. Second operand has 13 states, 13 states have (on average 155.92307692307693) internal successors, (2027), 13 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:46:39,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:46:39,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 168 [2021-06-10 14:46:39,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown