/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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 04:04:26,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 04:04:26,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 04:04:26,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 04:04:26,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 04:04:26,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 04:04:26,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 04:04:26,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 04:04:26,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 04:04:26,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 04:04:26,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 04:04:26,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 04:04:26,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 04:04:26,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 04:04:26,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 04:04:26,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 04:04:26,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 04:04:26,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 04:04:26,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 04:04:26,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 04:04:26,396 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-VariableLbe.epf [2023-01-28 04:04:26,415 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 04:04:26,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 04:04:26,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 04:04:26,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 04:04:26,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 04:04:26,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 04:04:26,417 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 04:04:26,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 04:04:26,417 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 04:04:26,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 04:04:26,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 04:04:26,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 04:04:26,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 04:04:26,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 04:04:26,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 04:04:26,418 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 04:04:26,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 04:04:26,418 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 04:04:26,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 04:04:26,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 04:04:26,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 04:04:26,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 04:04:26,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 04:04:26,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:04:26,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 04:04:26,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 04:04:26,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 04:04:26,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 04:04:26,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 04:04:26,419 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 04:04:26,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 04:04:26,419 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 04:04:26,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 04:04:26,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 04:04:26,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 04:04:26,623 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 04:04:26,623 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 04:04:26,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c [2023-01-28 04:04:27,513 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 04:04:27,691 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 04:04:27,691 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c [2023-01-28 04:04:27,695 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4219ad547/c05a7dd5196c438a99e4f364a0e6f448/FLAG8d5d132ca [2023-01-28 04:04:27,704 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4219ad547/c05a7dd5196c438a99e4f364a0e6f448 [2023-01-28 04:04:27,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 04:04:27,706 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 04:04:27,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 04:04:27,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 04:04:27,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 04:04:27,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:04:27" (1/1) ... [2023-01-28 04:04:27,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2079cd6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:04:27, skipping insertion in model container [2023-01-28 04:04:27,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:04:27" (1/1) ... [2023-01-28 04:04:27,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 04:04:27,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 04:04:27,871 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c[2507,2520] [2023-01-28 04:04:27,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:04:27,884 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 04:04:27,917 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c[2507,2520] [2023-01-28 04:04:27,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:04:27,922 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:04:27,922 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:04:27,926 INFO L208 MainTranslator]: Completed translation [2023-01-28 04:04:27,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:04:27 WrapperNode [2023-01-28 04:04:27,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 04:04:27,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 04:04:27,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 04:04:27,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 04:04:27,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:04:27" (1/1) ... [2023-01-28 04:04:27,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:04:27" (1/1) ... [2023-01-28 04:04:27,964 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 122 [2023-01-28 04:04:27,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 04:04:27,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 04:04:27,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 04:04:27,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 04:04:27,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:04:27" (1/1) ... [2023-01-28 04:04:27,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:04:27" (1/1) ... [2023-01-28 04:04:27,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:04:27" (1/1) ... [2023-01-28 04:04:27,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:04:27" (1/1) ... [2023-01-28 04:04:27,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:04:27" (1/1) ... [2023-01-28 04:04:27,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:04:27" (1/1) ... [2023-01-28 04:04:27,993 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:04:27" (1/1) ... [2023-01-28 04:04:27,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:04:27" (1/1) ... [2023-01-28 04:04:27,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 04:04:27,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 04:04:27,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 04:04:27,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 04:04:27,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:04:27" (1/1) ... [2023-01-28 04:04:28,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:04:28,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:04:28,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 04:04:28,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 04:04:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 04:04:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 04:04:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 04:04:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 04:04:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 04:04:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 04:04:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 04:04:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 04:04:28,052 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 04:04:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 04:04:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 04:04:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 04:04:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 04:04:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 04:04:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 04:04:28,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 04:04:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 04:04:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 04:04:28,053 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 04:04:28,121 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 04:04:28,122 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 04:04:28,331 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 04:04:28,366 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 04:04:28,366 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 04:04:28,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:04:28 BoogieIcfgContainer [2023-01-28 04:04:28,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 04:04:28,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 04:04:28,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 04:04:28,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 04:04:28,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 04:04:27" (1/3) ... [2023-01-28 04:04:28,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5754956a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:04:28, skipping insertion in model container [2023-01-28 04:04:28,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:04:27" (2/3) ... [2023-01-28 04:04:28,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5754956a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:04:28, skipping insertion in model container [2023-01-28 04:04:28,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:04:28" (3/3) ... [2023-01-28 04:04:28,372 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2023-01-28 04:04:28,383 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 04:04:28,383 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 04:04:28,383 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 04:04:28,438 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 04:04:28,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 125 transitions, 282 flow [2023-01-28 04:04:28,544 INFO L130 PetriNetUnfolder]: 9/121 cut-off events. [2023-01-28 04:04:28,545 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 04:04:28,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 121 events. 9/121 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 93 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-01-28 04:04:28,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 125 transitions, 282 flow [2023-01-28 04:04:28,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 109 transitions, 242 flow [2023-01-28 04:04:28,557 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 04:04:28,566 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 109 transitions, 242 flow [2023-01-28 04:04:28,571 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 109 transitions, 242 flow [2023-01-28 04:04:28,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 109 transitions, 242 flow [2023-01-28 04:04:28,595 INFO L130 PetriNetUnfolder]: 9/109 cut-off events. [2023-01-28 04:04:28,595 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 04:04:28,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 109 events. 9/109 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 94 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-01-28 04:04:28,603 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-01-28 04:04:31,243 INFO L134 LiptonReduction]: Checked pairs total: 2650 [2023-01-28 04:04:31,244 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-01-28 04:04:31,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 04:04:31,257 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6b18a6e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 04:04:31,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 04:04:31,262 INFO L130 PetriNetUnfolder]: 4/28 cut-off events. [2023-01-28 04:04:31,262 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 04:04:31,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:31,262 INFO L208 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] [2023-01-28 04:04:31,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:31,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:31,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2017117140, now seen corresponding path program 1 times [2023-01-28 04:04:31,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:31,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384217771] [2023-01-28 04:04:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:31,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:31,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:31,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384217771] [2023-01-28 04:04:31,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384217771] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:04:31,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:04:31,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 04:04:31,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122438920] [2023-01-28 04:04:31,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:04:31,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:04:31,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:04:31,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:04:31,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 212 [2023-01-28 04:04:31,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:31,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:31,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 212 [2023-01-28 04:04:31,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:31,782 INFO L130 PetriNetUnfolder]: 1537/1954 cut-off events. [2023-01-28 04:04:31,783 INFO L131 PetriNetUnfolder]: For 163/163 co-relation queries the response was YES. [2023-01-28 04:04:31,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 1954 events. 1537/1954 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6416 event pairs, 141 based on Foata normal form. 1/1135 useless extension candidates. Maximal degree in co-relation 3091. Up to 1733 conditions per place. [2023-01-28 04:04:31,797 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 41 selfloop transitions, 5 changer transitions 1/51 dead transitions. [2023-01-28 04:04:31,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 241 flow [2023-01-28 04:04:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:04:31,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:04:31,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2023-01-28 04:04:31,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660377358490566 [2023-01-28 04:04:31,813 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2023-01-28 04:04:31,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2023-01-28 04:04:31,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:31,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2023-01-28 04:04:31,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:31,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:31,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:31,824 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 360 transitions. [2023-01-28 04:04:31,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 51 transitions, 241 flow [2023-01-28 04:04:31,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 51 transitions, 211 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 04:04:31,830 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 99 flow [2023-01-28 04:04:31,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2023-01-28 04:04:31,836 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2023-01-28 04:04:31,836 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 99 flow [2023-01-28 04:04:31,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:31,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:31,836 INFO L208 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] [2023-01-28 04:04:31,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 04:04:31,838 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:31,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:31,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1386775174, now seen corresponding path program 1 times [2023-01-28 04:04:31,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:31,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600231180] [2023-01-28 04:04:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:31,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:31,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:31,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600231180] [2023-01-28 04:04:31,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600231180] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:04:31,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:04:31,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:04:31,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913423128] [2023-01-28 04:04:31,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:04:31,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:04:31,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:31,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:04:31,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:04:31,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:31,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:31,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:31,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:31,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:32,219 INFO L130 PetriNetUnfolder]: 2495/3283 cut-off events. [2023-01-28 04:04:32,219 INFO L131 PetriNetUnfolder]: For 972/972 co-relation queries the response was YES. [2023-01-28 04:04:32,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8050 conditions, 3283 events. 2495/3283 cut-off events. For 972/972 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 13635 event pairs, 520 based on Foata normal form. 48/3311 useless extension candidates. Maximal degree in co-relation 2873. Up to 1616 conditions per place. [2023-01-28 04:04:32,236 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 84 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2023-01-28 04:04:32,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 91 transitions, 452 flow [2023-01-28 04:04:32,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:04:32,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:04:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2023-01-28 04:04:32,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216981132075472 [2023-01-28 04:04:32,243 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2023-01-28 04:04:32,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2023-01-28 04:04:32,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:32,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2023-01-28 04:04:32,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:32,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:32,247 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:32,247 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 99 flow. Second operand 5 states and 553 transitions. [2023-01-28 04:04:32,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 91 transitions, 452 flow [2023-01-28 04:04:32,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 91 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 04:04:32,250 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 129 flow [2023-01-28 04:04:32,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=129, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2023-01-28 04:04:32,251 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2023-01-28 04:04:32,251 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 129 flow [2023-01-28 04:04:32,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:32,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:32,252 INFO L208 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] [2023-01-28 04:04:32,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 04:04:32,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:32,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:32,254 INFO L85 PathProgramCache]: Analyzing trace with hash -418684095, now seen corresponding path program 1 times [2023-01-28 04:04:32,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:32,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887425449] [2023-01-28 04:04:32,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:32,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:32,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:32,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:32,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887425449] [2023-01-28 04:04:32,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887425449] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:04:32,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441008784] [2023-01-28 04:04:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:32,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:04:32,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:04:32,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:04:32,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 04:04:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:32,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 04:04:32,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:04:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:32,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:04:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:32,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441008784] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:04:32,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:04:32,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-01-28 04:04:32,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081163030] [2023-01-28 04:04:32,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:04:32,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 04:04:32,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:32,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 04:04:32,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-28 04:04:32,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:32,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 129 flow. Second operand has 8 states, 8 states have (on average 98.75) internal successors, (790), 8 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:32,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:32,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:32,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:32,986 INFO L130 PetriNetUnfolder]: 3361/4509 cut-off events. [2023-01-28 04:04:32,986 INFO L131 PetriNetUnfolder]: For 3715/4180 co-relation queries the response was YES. [2023-01-28 04:04:32,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12634 conditions, 4509 events. 3361/4509 cut-off events. For 3715/4180 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 20174 event pairs, 707 based on Foata normal form. 570/5006 useless extension candidates. Maximal degree in co-relation 8079. Up to 1944 conditions per place. [2023-01-28 04:04:33,008 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 89 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2023-01-28 04:04:33,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 97 transitions, 532 flow [2023-01-28 04:04:33,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:04:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:04:33,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2023-01-28 04:04:33,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235849056603774 [2023-01-28 04:04:33,010 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2023-01-28 04:04:33,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2023-01-28 04:04:33,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:33,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2023-01-28 04:04:33,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:33,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:33,013 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:33,013 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 129 flow. Second operand 5 states and 555 transitions. [2023-01-28 04:04:33,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 97 transitions, 532 flow [2023-01-28 04:04:33,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 97 transitions, 513 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 04:04:33,018 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 159 flow [2023-01-28 04:04:33,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-01-28 04:04:33,019 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2023-01-28 04:04:33,019 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 159 flow [2023-01-28 04:04:33,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.75) internal successors, (790), 8 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:33,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:33,019 INFO L208 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] [2023-01-28 04:04:33,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 04:04:33,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:04:33,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:33,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:33,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1510344313, now seen corresponding path program 1 times [2023-01-28 04:04:33,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:33,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377897409] [2023-01-28 04:04:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:33,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:33,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:33,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377897409] [2023-01-28 04:04:33,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377897409] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:04:33,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565826454] [2023-01-28 04:04:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:33,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:04:33,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:04:33,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:04:33,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 04:04:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:33,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 04:04:33,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:04:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:33,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:04:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:33,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565826454] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:04:33,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:04:33,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-01-28 04:04:33,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756903113] [2023-01-28 04:04:33,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:04:33,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 04:04:33,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:33,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 04:04:33,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-28 04:04:33,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:33,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 159 flow. Second operand has 8 states, 8 states have (on average 99.625) internal successors, (797), 8 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:33,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:33,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:33,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:33,789 INFO L130 PetriNetUnfolder]: 3413/4567 cut-off events. [2023-01-28 04:04:33,789 INFO L131 PetriNetUnfolder]: For 5980/6404 co-relation queries the response was YES. [2023-01-28 04:04:33,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14384 conditions, 4567 events. 3413/4567 cut-off events. For 5980/6404 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 20233 event pairs, 479 based on Foata normal form. 512/5013 useless extension candidates. Maximal degree in co-relation 11186. Up to 2034 conditions per place. [2023-01-28 04:04:33,812 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 88 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2023-01-28 04:04:33,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 96 transitions, 573 flow [2023-01-28 04:04:33,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:04:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:04:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2023-01-28 04:04:33,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216981132075472 [2023-01-28 04:04:33,813 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2023-01-28 04:04:33,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2023-01-28 04:04:33,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:33,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2023-01-28 04:04:33,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:33,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:33,817 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:33,817 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 159 flow. Second operand 5 states and 553 transitions. [2023-01-28 04:04:33,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 96 transitions, 573 flow [2023-01-28 04:04:33,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 96 transitions, 564 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 04:04:33,826 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 188 flow [2023-01-28 04:04:33,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-01-28 04:04:33,826 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2023-01-28 04:04:33,826 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 188 flow [2023-01-28 04:04:33,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.625) internal successors, (797), 8 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:33,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:33,827 INFO L208 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] [2023-01-28 04:04:33,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 04:04:34,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-28 04:04:34,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:34,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:34,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1953734941, now seen corresponding path program 2 times [2023-01-28 04:04:34,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:34,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781803678] [2023-01-28 04:04:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:34,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:34,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:34,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781803678] [2023-01-28 04:04:34,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781803678] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:04:34,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665428785] [2023-01-28 04:04:34,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:04:34,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:04:34,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:04:34,093 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:04:34,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 04:04:34,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:04:34,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:04:34,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 04:04:34,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:04:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:34,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:04:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:34,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665428785] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:04:34,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:04:34,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 04:04:34,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286867338] [2023-01-28 04:04:34,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:04:34,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 04:04:34,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:34,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 04:04:34,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-01-28 04:04:34,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:34,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 188 flow. Second operand has 10 states, 10 states have (on average 99.7) internal successors, (997), 10 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:34,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:34,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:34,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:34,822 INFO L130 PetriNetUnfolder]: 5065/6869 cut-off events. [2023-01-28 04:04:34,822 INFO L131 PetriNetUnfolder]: For 13799/14765 co-relation queries the response was YES. [2023-01-28 04:04:34,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23179 conditions, 6869 events. 5065/6869 cut-off events. For 13799/14765 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 33838 event pairs, 649 based on Foata normal form. 1068/7721 useless extension candidates. Maximal degree in co-relation 16109. Up to 2724 conditions per place. [2023-01-28 04:04:34,860 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 149 selfloop transitions, 13 changer transitions 0/166 dead transitions. [2023-01-28 04:04:34,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 166 transitions, 1054 flow [2023-01-28 04:04:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:04:34,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:04:34,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 891 transitions. [2023-01-28 04:04:34,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253537735849056 [2023-01-28 04:04:34,862 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 891 transitions. [2023-01-28 04:04:34,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 891 transitions. [2023-01-28 04:04:34,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:34,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 891 transitions. [2023-01-28 04:04:34,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 111.375) internal successors, (891), 8 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:34,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:34,866 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:34,866 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 188 flow. Second operand 8 states and 891 transitions. [2023-01-28 04:04:34,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 166 transitions, 1054 flow [2023-01-28 04:04:34,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 166 transitions, 1012 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-01-28 04:04:34,887 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 281 flow [2023-01-28 04:04:34,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=281, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2023-01-28 04:04:34,889 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2023-01-28 04:04:34,889 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 281 flow [2023-01-28 04:04:34,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.7) internal successors, (997), 10 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:34,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:34,890 INFO L208 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] [2023-01-28 04:04:34,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 04:04:35,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:04:35,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:35,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:35,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1707640579, now seen corresponding path program 2 times [2023-01-28 04:04:35,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:35,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185913289] [2023-01-28 04:04:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:35,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:35,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:35,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185913289] [2023-01-28 04:04:35,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185913289] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:04:35,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600624091] [2023-01-28 04:04:35,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:04:35,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:04:35,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:04:35,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:04:35,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 04:04:35,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:04:35,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:04:35,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 04:04:35,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:04:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:35,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:04:35,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:35,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600624091] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:04:35,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:04:35,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 04:04:35,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566026222] [2023-01-28 04:04:35,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:04:35,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 04:04:35,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:35,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 04:04:35,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-01-28 04:04:35,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:35,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 281 flow. Second operand has 10 states, 10 states have (on average 98.3) internal successors, (983), 10 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:35,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:35,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:35,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:36,028 INFO L130 PetriNetUnfolder]: 8404/11264 cut-off events. [2023-01-28 04:04:36,028 INFO L131 PetriNetUnfolder]: For 34345/36956 co-relation queries the response was YES. [2023-01-28 04:04:36,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43194 conditions, 11264 events. 8404/11264 cut-off events. For 34345/36956 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 57068 event pairs, 736 based on Foata normal form. 951/11972 useless extension candidates. Maximal degree in co-relation 36360. Up to 4803 conditions per place. [2023-01-28 04:04:36,084 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 175 selfloop transitions, 14 changer transitions 0/193 dead transitions. [2023-01-28 04:04:36,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 193 transitions, 1524 flow [2023-01-28 04:04:36,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:04:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:04:36,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 885 transitions. [2023-01-28 04:04:36,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5218160377358491 [2023-01-28 04:04:36,086 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 885 transitions. [2023-01-28 04:04:36,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 885 transitions. [2023-01-28 04:04:36,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:36,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 885 transitions. [2023-01-28 04:04:36,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.625) internal successors, (885), 8 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:36,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:36,090 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:36,090 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 281 flow. Second operand 8 states and 885 transitions. [2023-01-28 04:04:36,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 193 transitions, 1524 flow [2023-01-28 04:04:36,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 193 transitions, 1424 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-01-28 04:04:36,174 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 370 flow [2023-01-28 04:04:36,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=370, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-01-28 04:04:36,175 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 28 predicate places. [2023-01-28 04:04:36,175 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 370 flow [2023-01-28 04:04:36,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 98.3) internal successors, (983), 10 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:36,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:36,175 INFO L208 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] [2023-01-28 04:04:36,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 04:04:36,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:04:36,376 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:36,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:36,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2076753269, now seen corresponding path program 3 times [2023-01-28 04:04:36,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:36,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664963633] [2023-01-28 04:04:36,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:36,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:36,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:36,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664963633] [2023-01-28 04:04:36,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664963633] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:04:36,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235963285] [2023-01-28 04:04:36,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:04:36,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:04:36,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:04:36,437 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:04:36,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 04:04:36,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:04:36,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:04:36,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 04:04:36,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:04:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:36,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:04:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:36,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235963285] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:04:36,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:04:36,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 04:04:36,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086713672] [2023-01-28 04:04:36,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:04:36,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 04:04:36,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:36,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 04:04:36,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 04:04:36,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:36,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 370 flow. Second operand has 10 states, 10 states have (on average 99.7) internal successors, (997), 10 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:36,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:36,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:36,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:37,560 INFO L130 PetriNetUnfolder]: 10652/14308 cut-off events. [2023-01-28 04:04:37,560 INFO L131 PetriNetUnfolder]: For 57338/60554 co-relation queries the response was YES. [2023-01-28 04:04:37,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60004 conditions, 14308 events. 10652/14308 cut-off events. For 57338/60554 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 76201 event pairs, 2167 based on Foata normal form. 1607/15471 useless extension candidates. Maximal degree in co-relation 50602. Up to 6486 conditions per place. [2023-01-28 04:04:37,636 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 125 selfloop transitions, 16 changer transitions 0/146 dead transitions. [2023-01-28 04:04:37,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 146 transitions, 1196 flow [2023-01-28 04:04:37,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:04:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:04:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 560 transitions. [2023-01-28 04:04:37,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2023-01-28 04:04:37,639 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 560 transitions. [2023-01-28 04:04:37,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 560 transitions. [2023-01-28 04:04:37,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:37,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 560 transitions. [2023-01-28 04:04:37,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:37,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:37,642 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:37,642 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 370 flow. Second operand 5 states and 560 transitions. [2023-01-28 04:04:37,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 146 transitions, 1196 flow [2023-01-28 04:04:37,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 146 transitions, 1146 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 04:04:37,734 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 473 flow [2023-01-28 04:04:37,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=473, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-01-28 04:04:37,736 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2023-01-28 04:04:37,736 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 473 flow [2023-01-28 04:04:37,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.7) internal successors, (997), 10 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:37,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:37,741 INFO L208 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] [2023-01-28 04:04:37,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 04:04:37,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:04:37,946 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:37,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:37,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1065793488, now seen corresponding path program 1 times [2023-01-28 04:04:37,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:37,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457827155] [2023-01-28 04:04:37,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:37,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:37,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:37,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:37,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457827155] [2023-01-28 04:04:37,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457827155] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:04:37,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:04:37,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:04:37,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195620124] [2023-01-28 04:04:37,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:04:37,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:04:37,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:37,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:04:37,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:04:37,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:37,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 473 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:37,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:37,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:37,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:39,014 INFO L130 PetriNetUnfolder]: 11094/14850 cut-off events. [2023-01-28 04:04:39,015 INFO L131 PetriNetUnfolder]: For 61372/64597 co-relation queries the response was YES. [2023-01-28 04:04:39,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65847 conditions, 14850 events. 11094/14850 cut-off events. For 61372/64597 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 79472 event pairs, 971 based on Foata normal form. 1644/16054 useless extension candidates. Maximal degree in co-relation 56268. Up to 7770 conditions per place. [2023-01-28 04:04:39,085 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 115 selfloop transitions, 15 changer transitions 0/135 dead transitions. [2023-01-28 04:04:39,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 135 transitions, 1180 flow [2023-01-28 04:04:39,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:04:39,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:04:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2023-01-28 04:04:39,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160377358490567 [2023-01-28 04:04:39,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2023-01-28 04:04:39,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2023-01-28 04:04:39,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:39,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2023-01-28 04:04:39,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:39,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:39,089 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:39,089 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 473 flow. Second operand 5 states and 547 transitions. [2023-01-28 04:04:39,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 135 transitions, 1180 flow [2023-01-28 04:04:39,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 135 transitions, 1154 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-01-28 04:04:39,257 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 525 flow [2023-01-28 04:04:39,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=525, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2023-01-28 04:04:39,257 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 38 predicate places. [2023-01-28 04:04:39,257 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 525 flow [2023-01-28 04:04:39,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:39,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:39,258 INFO L208 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] [2023-01-28 04:04:39,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 04:04:39,258 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:39,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:39,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1179771516, now seen corresponding path program 2 times [2023-01-28 04:04:39,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:39,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960395627] [2023-01-28 04:04:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:39,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:39,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:39,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960395627] [2023-01-28 04:04:39,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960395627] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:04:39,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:04:39,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:04:39,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876049754] [2023-01-28 04:04:39,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:04:39,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:04:39,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:39,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:04:39,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:04:39,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:39,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 525 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:39,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:39,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:39,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:40,266 INFO L130 PetriNetUnfolder]: 9512/12930 cut-off events. [2023-01-28 04:04:40,266 INFO L131 PetriNetUnfolder]: For 70712/74116 co-relation queries the response was YES. [2023-01-28 04:04:40,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58319 conditions, 12930 events. 9512/12930 cut-off events. For 70712/74116 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 68496 event pairs, 2404 based on Foata normal form. 1498/14218 useless extension candidates. Maximal degree in co-relation 54145. Up to 7286 conditions per place. [2023-01-28 04:04:40,332 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 141 selfloop transitions, 11 changer transitions 0/158 dead transitions. [2023-01-28 04:04:40,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 158 transitions, 1568 flow [2023-01-28 04:04:40,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:04:40,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:04:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-01-28 04:04:40,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245283018867924 [2023-01-28 04:04:40,335 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-01-28 04:04:40,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-01-28 04:04:40,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:40,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-01-28 04:04:40,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:40,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:40,342 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:40,342 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 525 flow. Second operand 5 states and 556 transitions. [2023-01-28 04:04:40,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 158 transitions, 1568 flow [2023-01-28 04:04:40,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 158 transitions, 1508 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-28 04:04:40,456 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 547 flow [2023-01-28 04:04:40,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=547, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2023-01-28 04:04:40,456 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 41 predicate places. [2023-01-28 04:04:40,456 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 547 flow [2023-01-28 04:04:40,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:40,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:40,457 INFO L208 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] [2023-01-28 04:04:40,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 04:04:40,457 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:40,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:40,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1826686174, now seen corresponding path program 2 times [2023-01-28 04:04:40,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:40,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711514620] [2023-01-28 04:04:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:40,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:40,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:40,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711514620] [2023-01-28 04:04:40,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711514620] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:04:40,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:04:40,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:04:40,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444950444] [2023-01-28 04:04:40,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:04:40,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:04:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:04:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:04:40,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:40,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 547 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:40,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:40,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:40,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:41,509 INFO L130 PetriNetUnfolder]: 10846/14650 cut-off events. [2023-01-28 04:04:41,509 INFO L131 PetriNetUnfolder]: For 77876/81912 co-relation queries the response was YES. [2023-01-28 04:04:41,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68476 conditions, 14650 events. 10846/14650 cut-off events. For 77876/81912 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 80807 event pairs, 2073 based on Foata normal form. 1808/16120 useless extension candidates. Maximal degree in co-relation 58877. Up to 7788 conditions per place. [2023-01-28 04:04:41,587 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 145 selfloop transitions, 12 changer transitions 2/164 dead transitions. [2023-01-28 04:04:41,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 164 transitions, 1513 flow [2023-01-28 04:04:41,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:04:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:04:41,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2023-01-28 04:04:41,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254716981132076 [2023-01-28 04:04:41,589 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2023-01-28 04:04:41,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2023-01-28 04:04:41,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:41,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2023-01-28 04:04:41,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:41,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:41,592 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:41,592 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 547 flow. Second operand 5 states and 557 transitions. [2023-01-28 04:04:41,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 164 transitions, 1513 flow [2023-01-28 04:04:41,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 164 transitions, 1427 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-01-28 04:04:41,701 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 578 flow [2023-01-28 04:04:41,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2023-01-28 04:04:41,702 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 45 predicate places. [2023-01-28 04:04:41,702 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 578 flow [2023-01-28 04:04:41,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:41,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:41,702 INFO L208 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] [2023-01-28 04:04:41,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 04:04:41,703 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:41,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:41,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1678969827, now seen corresponding path program 3 times [2023-01-28 04:04:41,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:41,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998284187] [2023-01-28 04:04:41,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:41,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:41,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:41,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:41,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998284187] [2023-01-28 04:04:41,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998284187] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:04:41,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896552996] [2023-01-28 04:04:41,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:04:41,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:04:41,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:04:41,776 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:04:41,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 04:04:41,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:04:41,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:04:41,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 04:04:41,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:04:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:41,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:04:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:41,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896552996] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:04:41,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:04:41,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 04:04:41,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374139720] [2023-01-28 04:04:41,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:04:41,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 04:04:41,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:41,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 04:04:41,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 04:04:41,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:41,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 578 flow. Second operand has 10 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:41,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:41,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:41,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:43,287 INFO L130 PetriNetUnfolder]: 12722/17437 cut-off events. [2023-01-28 04:04:43,287 INFO L131 PetriNetUnfolder]: For 95235/100050 co-relation queries the response was YES. [2023-01-28 04:04:43,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82937 conditions, 17437 events. 12722/17437 cut-off events. For 95235/100050 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 97111 event pairs, 3252 based on Foata normal form. 2507/19640 useless extension candidates. Maximal degree in co-relation 78353. Up to 8886 conditions per place. [2023-01-28 04:04:43,369 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 146 selfloop transitions, 17 changer transitions 0/170 dead transitions. [2023-01-28 04:04:43,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 170 transitions, 1757 flow [2023-01-28 04:04:43,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:04:43,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:04:43,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2023-01-28 04:04:43,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5226415094339623 [2023-01-28 04:04:43,371 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2023-01-28 04:04:43,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2023-01-28 04:04:43,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:43,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2023-01-28 04:04:43,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:43,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:43,374 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:43,374 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 578 flow. Second operand 5 states and 554 transitions. [2023-01-28 04:04:43,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 170 transitions, 1757 flow [2023-01-28 04:04:43,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 170 transitions, 1685 flow, removed 23 selfloop flow, removed 1 redundant places. [2023-01-28 04:04:43,545 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 676 flow [2023-01-28 04:04:43,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=676, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2023-01-28 04:04:43,546 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 51 predicate places. [2023-01-28 04:04:43,546 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 676 flow [2023-01-28 04:04:43,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:43,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:43,546 INFO L208 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] [2023-01-28 04:04:43,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 04:04:43,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:04:43,753 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:43,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:43,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1635530536, now seen corresponding path program 3 times [2023-01-28 04:04:43,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:43,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132874753] [2023-01-28 04:04:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:43,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:43,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:43,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132874753] [2023-01-28 04:04:43,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132874753] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:04:43,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:04:43,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:04:43,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038120267] [2023-01-28 04:04:43,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:04:43,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:04:43,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:43,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:04:43,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:04:43,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:43,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 676 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:43,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:43,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:43,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:45,003 INFO L130 PetriNetUnfolder]: 11930/16332 cut-off events. [2023-01-28 04:04:45,003 INFO L131 PetriNetUnfolder]: For 107941/112532 co-relation queries the response was YES. [2023-01-28 04:04:45,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81495 conditions, 16332 events. 11930/16332 cut-off events. For 107941/112532 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 93538 event pairs, 3390 based on Foata normal form. 2076/18144 useless extension candidates. Maximal degree in co-relation 66105. Up to 8704 conditions per place. [2023-01-28 04:04:45,105 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 154 selfloop transitions, 16 changer transitions 2/178 dead transitions. [2023-01-28 04:04:45,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 178 transitions, 1746 flow [2023-01-28 04:04:45,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:04:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:04:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 560 transitions. [2023-01-28 04:04:45,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2023-01-28 04:04:45,107 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 560 transitions. [2023-01-28 04:04:45,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 560 transitions. [2023-01-28 04:04:45,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:45,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 560 transitions. [2023-01-28 04:04:45,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:45,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:45,109 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:45,109 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 676 flow. Second operand 5 states and 560 transitions. [2023-01-28 04:04:45,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 178 transitions, 1746 flow [2023-01-28 04:04:45,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 178 transitions, 1700 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-01-28 04:04:45,275 INFO L231 Difference]: Finished difference. Result has 94 places, 79 transitions, 722 flow [2023-01-28 04:04:45,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=722, PETRI_PLACES=94, PETRI_TRANSITIONS=79} [2023-01-28 04:04:45,275 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 56 predicate places. [2023-01-28 04:04:45,275 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 79 transitions, 722 flow [2023-01-28 04:04:45,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:45,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:45,276 INFO L208 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] [2023-01-28 04:04:45,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 04:04:45,276 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:45,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash 439687930, now seen corresponding path program 4 times [2023-01-28 04:04:45,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:45,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416157432] [2023-01-28 04:04:45,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:45,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:45,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:45,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416157432] [2023-01-28 04:04:45,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416157432] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:04:45,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:04:45,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:04:45,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919890471] [2023-01-28 04:04:45,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:04:45,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:04:45,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:45,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:04:45,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:04:45,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:45,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 79 transitions, 722 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:45,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:45,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:45,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:46,390 INFO L130 PetriNetUnfolder]: 12388/16950 cut-off events. [2023-01-28 04:04:46,391 INFO L131 PetriNetUnfolder]: For 111307/115949 co-relation queries the response was YES. [2023-01-28 04:04:46,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86451 conditions, 16950 events. 12388/16950 cut-off events. For 111307/115949 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 95622 event pairs, 3634 based on Foata normal form. 1900/18564 useless extension candidates. Maximal degree in co-relation 76477. Up to 8836 conditions per place. [2023-01-28 04:04:46,516 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 155 selfloop transitions, 15 changer transitions 0/176 dead transitions. [2023-01-28 04:04:46,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 176 transitions, 1769 flow [2023-01-28 04:04:46,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:04:46,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:04:46,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-01-28 04:04:46,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245283018867924 [2023-01-28 04:04:46,518 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-01-28 04:04:46,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-01-28 04:04:46,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:46,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-01-28 04:04:46,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:46,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:46,521 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:46,521 INFO L175 Difference]: Start difference. First operand has 94 places, 79 transitions, 722 flow. Second operand 5 states and 556 transitions. [2023-01-28 04:04:46,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 176 transitions, 1769 flow [2023-01-28 04:04:46,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 176 transitions, 1725 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-01-28 04:04:46,916 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 728 flow [2023-01-28 04:04:46,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=728, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2023-01-28 04:04:46,917 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 58 predicate places. [2023-01-28 04:04:46,917 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 728 flow [2023-01-28 04:04:46,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:46,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:46,917 INFO L208 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] [2023-01-28 04:04:46,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 04:04:46,918 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:46,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:46,918 INFO L85 PathProgramCache]: Analyzing trace with hash 496335170, now seen corresponding path program 3 times [2023-01-28 04:04:46,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:46,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440634473] [2023-01-28 04:04:46,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:46,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:46,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:46,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440634473] [2023-01-28 04:04:46,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440634473] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:04:46,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:04:46,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:04:46,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257582544] [2023-01-28 04:04:46,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:04:46,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:04:46,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:46,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:04:46,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:04:46,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:46,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 728 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:46,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:46,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:46,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:48,309 INFO L130 PetriNetUnfolder]: 13022/17777 cut-off events. [2023-01-28 04:04:48,309 INFO L131 PetriNetUnfolder]: For 115257/120649 co-relation queries the response was YES. [2023-01-28 04:04:48,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90874 conditions, 17777 events. 13022/17777 cut-off events. For 115257/120649 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 99379 event pairs, 3174 based on Foata normal form. 2689/20312 useless extension candidates. Maximal degree in co-relation 82150. Up to 9978 conditions per place. [2023-01-28 04:04:48,465 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 159 selfloop transitions, 13 changer transitions 0/179 dead transitions. [2023-01-28 04:04:48,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 179 transitions, 1966 flow [2023-01-28 04:04:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:04:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:04:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2023-01-28 04:04:48,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207547169811321 [2023-01-28 04:04:48,467 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2023-01-28 04:04:48,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2023-01-28 04:04:48,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:48,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2023-01-28 04:04:48,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:48,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:48,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:48,469 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 728 flow. Second operand 5 states and 552 transitions. [2023-01-28 04:04:48,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 179 transitions, 1966 flow [2023-01-28 04:04:48,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 179 transitions, 1874 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-01-28 04:04:48,736 INFO L231 Difference]: Finished difference. Result has 98 places, 81 transitions, 735 flow [2023-01-28 04:04:48,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=735, PETRI_PLACES=98, PETRI_TRANSITIONS=81} [2023-01-28 04:04:48,736 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 60 predicate places. [2023-01-28 04:04:48,736 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 81 transitions, 735 flow [2023-01-28 04:04:48,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:48,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:48,737 INFO L208 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] [2023-01-28 04:04:48,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 04:04:48,737 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:48,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:48,737 INFO L85 PathProgramCache]: Analyzing trace with hash 261516316, now seen corresponding path program 4 times [2023-01-28 04:04:48,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:48,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341808114] [2023-01-28 04:04:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:48,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:48,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:48,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341808114] [2023-01-28 04:04:48,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341808114] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:04:48,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883749763] [2023-01-28 04:04:48,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:04:48,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:04:48,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:04:48,777 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:04:48,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 04:04:48,837 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:04:48,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:04:48,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 04:04:48,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:04:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:48,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:04:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:48,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883749763] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:04:48,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:04:48,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-01-28 04:04:48,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870498627] [2023-01-28 04:04:48,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:04:48,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 04:04:48,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:48,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 04:04:48,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-28 04:04:48,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:48,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 81 transitions, 735 flow. Second operand has 8 states, 8 states have (on average 98.875) internal successors, (791), 8 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:48,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:48,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:48,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:50,341 INFO L130 PetriNetUnfolder]: 13620/18549 cut-off events. [2023-01-28 04:04:50,342 INFO L131 PetriNetUnfolder]: For 116629/122375 co-relation queries the response was YES. [2023-01-28 04:04:50,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96364 conditions, 18549 events. 13620/18549 cut-off events. For 116629/122375 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 104631 event pairs, 1504 based on Foata normal form. 2887/21276 useless extension candidates. Maximal degree in co-relation 87643. Up to 8289 conditions per place. [2023-01-28 04:04:50,485 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 155 selfloop transitions, 16 changer transitions 0/178 dead transitions. [2023-01-28 04:04:50,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 178 transitions, 1933 flow [2023-01-28 04:04:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:04:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:04:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2023-01-28 04:04:50,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141509433962265 [2023-01-28 04:04:50,487 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2023-01-28 04:04:50,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2023-01-28 04:04:50,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:50,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2023-01-28 04:04:50,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:50,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:50,489 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:50,489 INFO L175 Difference]: Start difference. First operand has 98 places, 81 transitions, 735 flow. Second operand 5 states and 545 transitions. [2023-01-28 04:04:50,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 178 transitions, 1933 flow [2023-01-28 04:04:50,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 178 transitions, 1899 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-28 04:04:50,823 INFO L231 Difference]: Finished difference. Result has 101 places, 83 transitions, 777 flow [2023-01-28 04:04:50,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=777, PETRI_PLACES=101, PETRI_TRANSITIONS=83} [2023-01-28 04:04:50,824 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 63 predicate places. [2023-01-28 04:04:50,824 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 83 transitions, 777 flow [2023-01-28 04:04:50,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.875) internal successors, (791), 8 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:50,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:50,824 INFO L208 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] [2023-01-28 04:04:50,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 04:04:51,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:04:51,029 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:51,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:51,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1703650341, now seen corresponding path program 4 times [2023-01-28 04:04:51,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:51,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10514301] [2023-01-28 04:04:51,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:51,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:51,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:51,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10514301] [2023-01-28 04:04:51,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10514301] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:04:51,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:04:51,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:04:51,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100333436] [2023-01-28 04:04:51,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:04:51,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:04:51,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:51,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:04:51,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:04:51,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:51,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 83 transitions, 777 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:51,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:51,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:51,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:52,665 INFO L130 PetriNetUnfolder]: 13966/19130 cut-off events. [2023-01-28 04:04:52,665 INFO L131 PetriNetUnfolder]: For 140441/146439 co-relation queries the response was YES. [2023-01-28 04:04:52,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100921 conditions, 19130 events. 13966/19130 cut-off events. For 140441/146439 co-relation queries the response was YES. Maximal size of possible extension queue 1121. Compared 109510 event pairs, 3588 based on Foata normal form. 2911/21877 useless extension candidates. Maximal degree in co-relation 91788. Up to 10240 conditions per place. [2023-01-28 04:04:52,820 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 166 selfloop transitions, 17 changer transitions 2/192 dead transitions. [2023-01-28 04:04:52,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 192 transitions, 2089 flow [2023-01-28 04:04:52,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:04:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:04:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 549 transitions. [2023-01-28 04:04:52,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5179245283018868 [2023-01-28 04:04:52,822 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 549 transitions. [2023-01-28 04:04:52,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 549 transitions. [2023-01-28 04:04:52,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:52,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 549 transitions. [2023-01-28 04:04:52,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:52,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:52,824 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:52,824 INFO L175 Difference]: Start difference. First operand has 101 places, 83 transitions, 777 flow. Second operand 5 states and 549 transitions. [2023-01-28 04:04:52,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 192 transitions, 2089 flow [2023-01-28 04:04:53,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 192 transitions, 2067 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 04:04:53,314 INFO L231 Difference]: Finished difference. Result has 106 places, 85 transitions, 837 flow [2023-01-28 04:04:53,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=837, PETRI_PLACES=106, PETRI_TRANSITIONS=85} [2023-01-28 04:04:53,314 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 68 predicate places. [2023-01-28 04:04:53,314 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 85 transitions, 837 flow [2023-01-28 04:04:53,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:53,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:53,315 INFO L208 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] [2023-01-28 04:04:53,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 04:04:53,315 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:53,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:53,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1101080746, now seen corresponding path program 5 times [2023-01-28 04:04:53,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:53,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698924727] [2023-01-28 04:04:53,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:53,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:53,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:53,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698924727] [2023-01-28 04:04:53,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698924727] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:04:53,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:04:53,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:04:53,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557638305] [2023-01-28 04:04:53,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:04:53,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:04:53,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:53,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:04:53,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:04:53,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:53,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 85 transitions, 837 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:53,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:53,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:53,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:54,743 INFO L130 PetriNetUnfolder]: 13782/18946 cut-off events. [2023-01-28 04:04:54,743 INFO L131 PetriNetUnfolder]: For 144705/150703 co-relation queries the response was YES. [2023-01-28 04:04:54,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104440 conditions, 18946 events. 13782/18946 cut-off events. For 144705/150703 co-relation queries the response was YES. Maximal size of possible extension queue 1121. Compared 109100 event pairs, 3110 based on Foata normal form. 3003/21785 useless extension candidates. Maximal degree in co-relation 94992. Up to 8406 conditions per place. [2023-01-28 04:04:54,905 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 161 selfloop transitions, 19 changer transitions 0/187 dead transitions. [2023-01-28 04:04:54,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 187 transitions, 2056 flow [2023-01-28 04:04:54,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:04:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:04:54,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2023-01-28 04:04:54,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5226415094339623 [2023-01-28 04:04:54,907 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2023-01-28 04:04:54,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2023-01-28 04:04:54,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:54,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2023-01-28 04:04:54,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:54,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:54,909 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:54,909 INFO L175 Difference]: Start difference. First operand has 106 places, 85 transitions, 837 flow. Second operand 5 states and 554 transitions. [2023-01-28 04:04:54,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 187 transitions, 2056 flow [2023-01-28 04:04:55,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 187 transitions, 2032 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 04:04:55,417 INFO L231 Difference]: Finished difference. Result has 110 places, 86 transitions, 870 flow [2023-01-28 04:04:55,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=870, PETRI_PLACES=110, PETRI_TRANSITIONS=86} [2023-01-28 04:04:55,418 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 72 predicate places. [2023-01-28 04:04:55,418 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 86 transitions, 870 flow [2023-01-28 04:04:55,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:55,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:55,418 INFO L208 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] [2023-01-28 04:04:55,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 04:04:55,418 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:55,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:55,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1916988810, now seen corresponding path program 6 times [2023-01-28 04:04:55,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:55,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095740077] [2023-01-28 04:04:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:55,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:55,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:55,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:55,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095740077] [2023-01-28 04:04:55,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095740077] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:04:55,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:04:55,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:04:55,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672761001] [2023-01-28 04:04:55,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:04:55,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:04:55,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:55,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:04:55,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:04:55,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:55,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 86 transitions, 870 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:55,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:55,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:55,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:56,791 INFO L130 PetriNetUnfolder]: 12572/17218 cut-off events. [2023-01-28 04:04:56,792 INFO L131 PetriNetUnfolder]: For 144675/150095 co-relation queries the response was YES. [2023-01-28 04:04:56,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96545 conditions, 17218 events. 12572/17218 cut-off events. For 144675/150095 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 97225 event pairs, 3226 based on Foata normal form. 2755/19817 useless extension candidates. Maximal degree in co-relation 87804. Up to 9096 conditions per place. [2023-01-28 04:04:56,918 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 177 selfloop transitions, 22 changer transitions 4/210 dead transitions. [2023-01-28 04:04:56,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 210 transitions, 2349 flow [2023-01-28 04:04:56,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:04:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:04:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 656 transitions. [2023-01-28 04:04:56,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157232704402516 [2023-01-28 04:04:56,919 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 656 transitions. [2023-01-28 04:04:56,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 656 transitions. [2023-01-28 04:04:56,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:56,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 656 transitions. [2023-01-28 04:04:56,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.33333333333333) internal successors, (656), 6 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:56,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 212.0) internal successors, (1484), 7 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:56,922 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 212.0) internal successors, (1484), 7 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:56,922 INFO L175 Difference]: Start difference. First operand has 110 places, 86 transitions, 870 flow. Second operand 6 states and 656 transitions. [2023-01-28 04:04:56,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 210 transitions, 2349 flow [2023-01-28 04:04:57,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 210 transitions, 2308 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 04:04:57,474 INFO L231 Difference]: Finished difference. Result has 113 places, 89 transitions, 926 flow [2023-01-28 04:04:57,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=926, PETRI_PLACES=113, PETRI_TRANSITIONS=89} [2023-01-28 04:04:57,475 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2023-01-28 04:04:57,475 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 89 transitions, 926 flow [2023-01-28 04:04:57,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:57,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:57,476 INFO L208 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] [2023-01-28 04:04:57,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 04:04:57,476 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:57,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:57,476 INFO L85 PathProgramCache]: Analyzing trace with hash -834954938, now seen corresponding path program 5 times [2023-01-28 04:04:57,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:57,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894647215] [2023-01-28 04:04:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:57,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:57,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:57,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894647215] [2023-01-28 04:04:57,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894647215] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:04:57,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:04:57,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:04:57,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767409435] [2023-01-28 04:04:57,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:04:57,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:04:57,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:57,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:04:57,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:04:57,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:57,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 89 transitions, 926 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:57,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:57,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:57,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:04:58,623 INFO L130 PetriNetUnfolder]: 11478/15699 cut-off events. [2023-01-28 04:04:58,623 INFO L131 PetriNetUnfolder]: For 158993/165969 co-relation queries the response was YES. [2023-01-28 04:04:58,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88786 conditions, 15699 events. 11478/15699 cut-off events. For 158993/165969 co-relation queries the response was YES. Maximal size of possible extension queue 1109. Compared 90292 event pairs, 2724 based on Foata normal form. 2978/18424 useless extension candidates. Maximal degree in co-relation 80026. Up to 8044 conditions per place. [2023-01-28 04:04:58,734 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 192 selfloop transitions, 22 changer transitions 14/236 dead transitions. [2023-01-28 04:04:58,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 236 transitions, 2900 flow [2023-01-28 04:04:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:04:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:04:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 660 transitions. [2023-01-28 04:04:58,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188679245283019 [2023-01-28 04:04:58,736 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 660 transitions. [2023-01-28 04:04:58,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 660 transitions. [2023-01-28 04:04:58,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:04:58,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 660 transitions. [2023-01-28 04:04:58,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:58,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 212.0) internal successors, (1484), 7 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:58,738 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 212.0) internal successors, (1484), 7 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:58,738 INFO L175 Difference]: Start difference. First operand has 113 places, 89 transitions, 926 flow. Second operand 6 states and 660 transitions. [2023-01-28 04:04:58,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 236 transitions, 2900 flow [2023-01-28 04:04:59,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 236 transitions, 2681 flow, removed 68 selfloop flow, removed 4 redundant places. [2023-01-28 04:04:59,159 INFO L231 Difference]: Finished difference. Result has 116 places, 93 transitions, 983 flow [2023-01-28 04:04:59,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=983, PETRI_PLACES=116, PETRI_TRANSITIONS=93} [2023-01-28 04:04:59,159 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 78 predicate places. [2023-01-28 04:04:59,159 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 93 transitions, 983 flow [2023-01-28 04:04:59,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:59,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:04:59,159 INFO L208 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] [2023-01-28 04:04:59,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 04:04:59,160 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:04:59,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:04:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1962537474, now seen corresponding path program 6 times [2023-01-28 04:04:59,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:04:59,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882026678] [2023-01-28 04:04:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:04:59,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:04:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:04:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:04:59,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:04:59,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882026678] [2023-01-28 04:04:59,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882026678] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:04:59,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:04:59,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:04:59,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066651484] [2023-01-28 04:04:59,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:04:59,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:04:59,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:04:59,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:04:59,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:04:59,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:04:59,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 93 transitions, 983 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:04:59,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:04:59,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:04:59,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:05:00,417 INFO L130 PetriNetUnfolder]: 10594/14533 cut-off events. [2023-01-28 04:05:00,417 INFO L131 PetriNetUnfolder]: For 149934/156027 co-relation queries the response was YES. [2023-01-28 04:05:00,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84105 conditions, 14533 events. 10594/14533 cut-off events. For 149934/156027 co-relation queries the response was YES. Maximal size of possible extension queue 1054. Compared 81784 event pairs, 2384 based on Foata normal form. 2529/16860 useless extension candidates. Maximal degree in co-relation 75793. Up to 6316 conditions per place. [2023-01-28 04:05:00,527 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 180 selfloop transitions, 19 changer transitions 0/207 dead transitions. [2023-01-28 04:05:00,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 207 transitions, 2457 flow [2023-01-28 04:05:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:05:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:05:00,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2023-01-28 04:05:00,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207547169811321 [2023-01-28 04:05:00,529 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2023-01-28 04:05:00,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2023-01-28 04:05:00,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:05:00,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2023-01-28 04:05:00,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:00,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:00,531 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:00,531 INFO L175 Difference]: Start difference. First operand has 116 places, 93 transitions, 983 flow. Second operand 5 states and 552 transitions. [2023-01-28 04:05:00,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 207 transitions, 2457 flow [2023-01-28 04:05:00,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 207 transitions, 2394 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-01-28 04:05:00,901 INFO L231 Difference]: Finished difference. Result has 118 places, 94 transitions, 990 flow [2023-01-28 04:05:00,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=990, PETRI_PLACES=118, PETRI_TRANSITIONS=94} [2023-01-28 04:05:00,902 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 80 predicate places. [2023-01-28 04:05:00,902 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 94 transitions, 990 flow [2023-01-28 04:05:00,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:00,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:05:00,902 INFO L208 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] [2023-01-28 04:05:00,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 04:05:00,902 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:05:00,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:05:00,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1846128017, now seen corresponding path program 1 times [2023-01-28 04:05:00,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:05:00,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879643792] [2023-01-28 04:05:00,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:05:00,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:05:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:05:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:05:00,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:05:00,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879643792] [2023-01-28 04:05:00,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879643792] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:05:00,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:05:00,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 04:05:00,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517009108] [2023-01-28 04:05:00,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:05:00,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:05:00,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:05:00,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:05:00,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:05:00,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 212 [2023-01-28 04:05:00,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 94 transitions, 990 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:00,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:05:00,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 212 [2023-01-28 04:05:00,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:05:01,628 INFO L130 PetriNetUnfolder]: 6080/8552 cut-off events. [2023-01-28 04:05:01,628 INFO L131 PetriNetUnfolder]: For 104356/111588 co-relation queries the response was YES. [2023-01-28 04:05:01,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49938 conditions, 8552 events. 6080/8552 cut-off events. For 104356/111588 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 49692 event pairs, 2052 based on Foata normal form. 3234/11552 useless extension candidates. Maximal degree in co-relation 46225. Up to 5745 conditions per place. [2023-01-28 04:05:01,687 INFO L137 encePairwiseOnDemand]: 209/212 looper letters, 80 selfloop transitions, 10 changer transitions 15/119 dead transitions. [2023-01-28 04:05:01,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 119 transitions, 1359 flow [2023-01-28 04:05:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:05:01,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:05:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-01-28 04:05:01,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691823899371069 [2023-01-28 04:05:01,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-01-28 04:05:01,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-01-28 04:05:01,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:05:01,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-01-28 04:05:01,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:01,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:01,691 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:01,691 INFO L175 Difference]: Start difference. First operand has 118 places, 94 transitions, 990 flow. Second operand 3 states and 362 transitions. [2023-01-28 04:05:01,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 119 transitions, 1359 flow [2023-01-28 04:05:01,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 119 transitions, 1316 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 04:05:01,861 INFO L231 Difference]: Finished difference. Result has 118 places, 83 transitions, 869 flow [2023-01-28 04:05:01,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=869, PETRI_PLACES=118, PETRI_TRANSITIONS=83} [2023-01-28 04:05:01,861 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 80 predicate places. [2023-01-28 04:05:01,861 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 83 transitions, 869 flow [2023-01-28 04:05:01,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:01,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:05:01,861 INFO L208 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] [2023-01-28 04:05:01,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 04:05:01,862 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:05:01,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:05:01,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1030320933, now seen corresponding path program 1 times [2023-01-28 04:05:01,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:05:01,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135350831] [2023-01-28 04:05:01,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:05:01,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:05:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:05:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:01,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:05:01,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135350831] [2023-01-28 04:05:01,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135350831] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:05:01,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614125194] [2023-01-28 04:05:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:05:01,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:05:01,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:05:01,944 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:05:01,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 04:05:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:05:02,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 04:05:02,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:05:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:02,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:05:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:05:02,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614125194] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:05:02,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:05:02,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 2] total 5 [2023-01-28 04:05:02,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634469111] [2023-01-28 04:05:02,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:05:02,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 04:05:02,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:05:02,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 04:05:02,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 04:05:02,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 212 [2023-01-28 04:05:02,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 83 transitions, 869 flow. Second operand has 7 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:02,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:05:02,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 212 [2023-01-28 04:05:02,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:05:03,370 INFO L130 PetriNetUnfolder]: 11144/15339 cut-off events. [2023-01-28 04:05:03,370 INFO L131 PetriNetUnfolder]: For 142210/151798 co-relation queries the response was YES. [2023-01-28 04:05:03,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83356 conditions, 15339 events. 11144/15339 cut-off events. For 142210/151798 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 86220 event pairs, 1030 based on Foata normal form. 4585/19766 useless extension candidates. Maximal degree in co-relation 82420. Up to 8061 conditions per place. [2023-01-28 04:05:03,489 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 163 selfloop transitions, 83 changer transitions 5/265 dead transitions. [2023-01-28 04:05:03,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 265 transitions, 2815 flow [2023-01-28 04:05:03,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:05:03,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:05:03,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 856 transitions. [2023-01-28 04:05:03,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768194070080862 [2023-01-28 04:05:03,491 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 856 transitions. [2023-01-28 04:05:03,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 856 transitions. [2023-01-28 04:05:03,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:05:03,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 856 transitions. [2023-01-28 04:05:03,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.28571428571429) internal successors, (856), 7 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:03,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:03,493 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:03,493 INFO L175 Difference]: Start difference. First operand has 118 places, 83 transitions, 869 flow. Second operand 7 states and 856 transitions. [2023-01-28 04:05:03,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 265 transitions, 2815 flow [2023-01-28 04:05:03,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 265 transitions, 2738 flow, removed 11 selfloop flow, removed 11 redundant places. [2023-01-28 04:05:03,831 INFO L231 Difference]: Finished difference. Result has 111 places, 150 transitions, 1877 flow [2023-01-28 04:05:03,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1877, PETRI_PLACES=111, PETRI_TRANSITIONS=150} [2023-01-28 04:05:03,831 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 73 predicate places. [2023-01-28 04:05:03,831 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 150 transitions, 1877 flow [2023-01-28 04:05:03,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:03,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:05:03,831 INFO L208 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] [2023-01-28 04:05:03,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 04:05:04,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-01-28 04:05:04,032 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:05:04,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:05:04,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1938151797, now seen corresponding path program 2 times [2023-01-28 04:05:04,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:05:04,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784176257] [2023-01-28 04:05:04,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:05:04,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:05:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:05:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:04,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:05:04,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784176257] [2023-01-28 04:05:04,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784176257] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:05:04,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732450287] [2023-01-28 04:05:04,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:05:04,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:05:04,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:05:04,113 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:05:04,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 04:05:04,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:05:04,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:05:04,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 04:05:04,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:05:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:04,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:05:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:04,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732450287] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:05:04,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:05:04,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 2] total 5 [2023-01-28 04:05:04,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640826344] [2023-01-28 04:05:04,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:05:04,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 04:05:04,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:05:04,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 04:05:04,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 04:05:04,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 212 [2023-01-28 04:05:04,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 150 transitions, 1877 flow. Second operand has 7 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:04,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:05:04,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 212 [2023-01-28 04:05:04,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:05:06,243 INFO L130 PetriNetUnfolder]: 16518/22700 cut-off events. [2023-01-28 04:05:06,243 INFO L131 PetriNetUnfolder]: For 224549/237152 co-relation queries the response was YES. [2023-01-28 04:05:06,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131803 conditions, 22700 events. 16518/22700 cut-off events. For 224549/237152 co-relation queries the response was YES. Maximal size of possible extension queue 1280. Compared 133422 event pairs, 2818 based on Foata normal form. 5149/27700 useless extension candidates. Maximal degree in co-relation 115802. Up to 16448 conditions per place. [2023-01-28 04:05:06,411 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 235 selfloop transitions, 79 changer transitions 5/333 dead transitions. [2023-01-28 04:05:06,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 333 transitions, 4176 flow [2023-01-28 04:05:06,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:05:06,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:05:06,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 852 transitions. [2023-01-28 04:05:06,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5741239892183289 [2023-01-28 04:05:06,412 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 852 transitions. [2023-01-28 04:05:06,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 852 transitions. [2023-01-28 04:05:06,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:05:06,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 852 transitions. [2023-01-28 04:05:06,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.71428571428571) internal successors, (852), 7 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:06,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:06,414 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:06,414 INFO L175 Difference]: Start difference. First operand has 111 places, 150 transitions, 1877 flow. Second operand 7 states and 852 transitions. [2023-01-28 04:05:06,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 333 transitions, 4176 flow [2023-01-28 04:05:06,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 333 transitions, 3970 flow, removed 103 selfloop flow, removed 0 redundant places. [2023-01-28 04:05:06,945 INFO L231 Difference]: Finished difference. Result has 120 places, 222 transitions, 2956 flow [2023-01-28 04:05:06,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2956, PETRI_PLACES=120, PETRI_TRANSITIONS=222} [2023-01-28 04:05:06,945 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 82 predicate places. [2023-01-28 04:05:06,945 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 222 transitions, 2956 flow [2023-01-28 04:05:06,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:06,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:05:06,945 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:05:06,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 04:05:07,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:05:07,151 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:05:07,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:05:07,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1252895162, now seen corresponding path program 3 times [2023-01-28 04:05:07,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:05:07,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416031085] [2023-01-28 04:05:07,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:05:07,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:05:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:05:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:07,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:05:07,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416031085] [2023-01-28 04:05:07,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416031085] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:05:07,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898196905] [2023-01-28 04:05:07,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:05:07,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:05:07,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:05:07,206 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:05:07,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 04:05:07,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:05:07,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:05:07,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:05:07,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:05:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:07,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:05:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:07,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898196905] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:05:07,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:05:07,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-01-28 04:05:07,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680682577] [2023-01-28 04:05:07,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:05:07,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 04:05:07,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:05:07,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 04:05:07,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-01-28 04:05:07,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:05:07,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 222 transitions, 2956 flow. Second operand has 11 states, 11 states have (on average 98.0909090909091) internal successors, (1079), 11 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:07,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:05:07,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:05:07,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:05:10,312 INFO L130 PetriNetUnfolder]: 24378/33563 cut-off events. [2023-01-28 04:05:10,312 INFO L131 PetriNetUnfolder]: For 352237/367754 co-relation queries the response was YES. [2023-01-28 04:05:10,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195633 conditions, 33563 events. 24378/33563 cut-off events. For 352237/367754 co-relation queries the response was YES. Maximal size of possible extension queue 1780. Compared 206013 event pairs, 4662 based on Foata normal form. 6301/39773 useless extension candidates. Maximal degree in co-relation 178805. Up to 17876 conditions per place. [2023-01-28 04:05:10,752 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 424 selfloop transitions, 39 changer transitions 0/471 dead transitions. [2023-01-28 04:05:10,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 471 transitions, 6731 flow [2023-01-28 04:05:10,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:05:10,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:05:10,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2023-01-28 04:05:10,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202156334231806 [2023-01-28 04:05:10,754 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2023-01-28 04:05:10,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2023-01-28 04:05:10,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:05:10,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2023-01-28 04:05:10,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:10,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:10,756 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:10,756 INFO L175 Difference]: Start difference. First operand has 120 places, 222 transitions, 2956 flow. Second operand 7 states and 772 transitions. [2023-01-28 04:05:10,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 471 transitions, 6731 flow [2023-01-28 04:05:12,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 471 transitions, 6219 flow, removed 256 selfloop flow, removed 0 redundant places. [2023-01-28 04:05:12,140 INFO L231 Difference]: Finished difference. Result has 130 places, 245 transitions, 3052 flow [2023-01-28 04:05:12,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3052, PETRI_PLACES=130, PETRI_TRANSITIONS=245} [2023-01-28 04:05:12,141 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 92 predicate places. [2023-01-28 04:05:12,141 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 245 transitions, 3052 flow [2023-01-28 04:05:12,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 98.0909090909091) internal successors, (1079), 11 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:12,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:05:12,141 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:05:12,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-01-28 04:05:12,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-01-28 04:05:12,344 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:05:12,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:05:12,344 INFO L85 PathProgramCache]: Analyzing trace with hash -563281195, now seen corresponding path program 4 times [2023-01-28 04:05:12,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:05:12,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89741226] [2023-01-28 04:05:12,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:05:12,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:05:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:05:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:12,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:05:12,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89741226] [2023-01-28 04:05:12,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89741226] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:05:12,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058953072] [2023-01-28 04:05:12,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:05:12,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:05:12,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:05:12,396 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:05:12,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 04:05:12,467 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:05:12,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:05:12,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:05:12,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:05:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:12,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:05:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:12,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058953072] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:05:12,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:05:12,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-01-28 04:05:12,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263340106] [2023-01-28 04:05:12,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:05:12,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 04:05:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:05:12,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 04:05:12,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-01-28 04:05:12,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:05:12,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 245 transitions, 3052 flow. Second operand has 11 states, 11 states have (on average 98.18181818181819) internal successors, (1080), 11 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:12,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:05:12,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:05:12,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:05:16,642 INFO L130 PetriNetUnfolder]: 25169/34809 cut-off events. [2023-01-28 04:05:16,642 INFO L131 PetriNetUnfolder]: For 399996/414714 co-relation queries the response was YES. [2023-01-28 04:05:16,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203217 conditions, 34809 events. 25169/34809 cut-off events. For 399996/414714 co-relation queries the response was YES. Maximal size of possible extension queue 1873. Compared 220721 event pairs, 4386 based on Foata normal form. 6104/40636 useless extension candidates. Maximal degree in co-relation 184960. Up to 16345 conditions per place. [2023-01-28 04:05:16,945 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 721 selfloop transitions, 54 changer transitions 34/817 dead transitions. [2023-01-28 04:05:16,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 817 transitions, 11389 flow [2023-01-28 04:05:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 04:05:16,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 04:05:16,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1193 transitions. [2023-01-28 04:05:16,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115780445969125 [2023-01-28 04:05:16,946 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1193 transitions. [2023-01-28 04:05:16,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1193 transitions. [2023-01-28 04:05:16,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:05:16,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1193 transitions. [2023-01-28 04:05:16,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 108.45454545454545) internal successors, (1193), 11 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:16,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:16,950 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:16,950 INFO L175 Difference]: Start difference. First operand has 130 places, 245 transitions, 3052 flow. Second operand 11 states and 1193 transitions. [2023-01-28 04:05:16,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 817 transitions, 11389 flow [2023-01-28 04:05:18,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 817 transitions, 11302 flow, removed 29 selfloop flow, removed 2 redundant places. [2023-01-28 04:05:18,119 INFO L231 Difference]: Finished difference. Result has 143 places, 273 transitions, 3501 flow [2023-01-28 04:05:18,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=2984, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3501, PETRI_PLACES=143, PETRI_TRANSITIONS=273} [2023-01-28 04:05:18,120 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 105 predicate places. [2023-01-28 04:05:18,120 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 273 transitions, 3501 flow [2023-01-28 04:05:18,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 98.18181818181819) internal successors, (1080), 11 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:18,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:05:18,120 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:05:18,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 04:05:18,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-01-28 04:05:18,324 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:05:18,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:05:18,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1667997905, now seen corresponding path program 5 times [2023-01-28 04:05:18,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:05:18,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238371305] [2023-01-28 04:05:18,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:05:18,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:05:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:05:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:18,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:05:18,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238371305] [2023-01-28 04:05:18,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238371305] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:05:18,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801396770] [2023-01-28 04:05:18,373 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:05:18,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:05:18,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:05:18,374 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:05:18,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 04:05:18,453 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 04:05:18,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:05:18,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:05:18,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:05:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:18,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:05:18,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:18,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801396770] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:05:18,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:05:18,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-01-28 04:05:18,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243381887] [2023-01-28 04:05:18,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:05:18,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 04:05:18,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:05:18,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 04:05:18,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-01-28 04:05:18,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:05:18,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 273 transitions, 3501 flow. Second operand has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:18,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:05:18,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:05:18,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:05:25,735 INFO L130 PetriNetUnfolder]: 45403/62726 cut-off events. [2023-01-28 04:05:25,735 INFO L131 PetriNetUnfolder]: For 689282/716371 co-relation queries the response was YES. [2023-01-28 04:05:26,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379482 conditions, 62726 events. 45403/62726 cut-off events. For 689282/716371 co-relation queries the response was YES. Maximal size of possible extension queue 3089. Compared 416038 event pairs, 10097 based on Foata normal form. 11614/74086 useless extension candidates. Maximal degree in co-relation 332966. Up to 23541 conditions per place. [2023-01-28 04:05:26,553 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 740 selfloop transitions, 152 changer transitions 0/900 dead transitions. [2023-01-28 04:05:26,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 900 transitions, 12321 flow [2023-01-28 04:05:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 04:05:26,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 04:05:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1433 transitions. [2023-01-28 04:05:26,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5199564586357039 [2023-01-28 04:05:26,555 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1433 transitions. [2023-01-28 04:05:26,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1433 transitions. [2023-01-28 04:05:26,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:05:26,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1433 transitions. [2023-01-28 04:05:26,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 110.23076923076923) internal successors, (1433), 13 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:26,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 212.0) internal successors, (2968), 14 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:26,559 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 212.0) internal successors, (2968), 14 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:26,559 INFO L175 Difference]: Start difference. First operand has 143 places, 273 transitions, 3501 flow. Second operand 13 states and 1433 transitions. [2023-01-28 04:05:26,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 900 transitions, 12321 flow [2023-01-28 04:05:30,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 900 transitions, 12068 flow, removed 87 selfloop flow, removed 1 redundant places. [2023-01-28 04:05:30,814 INFO L231 Difference]: Finished difference. Result has 161 places, 372 transitions, 5050 flow [2023-01-28 04:05:30,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=3386, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5050, PETRI_PLACES=161, PETRI_TRANSITIONS=372} [2023-01-28 04:05:30,814 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 123 predicate places. [2023-01-28 04:05:30,815 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 372 transitions, 5050 flow [2023-01-28 04:05:30,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:30,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:05:30,815 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:05:30,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 04:05:31,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-28 04:05:31,016 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:05:31,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:05:31,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2081496792, now seen corresponding path program 6 times [2023-01-28 04:05:31,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:05:31,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430357981] [2023-01-28 04:05:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:05:31,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:05:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:05:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:31,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:05:31,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430357981] [2023-01-28 04:05:31,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430357981] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:05:31,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542311921] [2023-01-28 04:05:31,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:05:31,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:05:31,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:05:31,069 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:05:31,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 04:05:31,164 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:05:31,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:05:31,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:05:31,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:05:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:31,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:05:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:31,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542311921] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:05:31,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:05:31,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-01-28 04:05:31,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393333323] [2023-01-28 04:05:31,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:05:31,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 04:05:31,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:05:31,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 04:05:31,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-01-28 04:05:31,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:05:31,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 372 transitions, 5050 flow. Second operand has 13 states, 13 states have (on average 98.15384615384616) internal successors, (1276), 13 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:31,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:05:31,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:05:31,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:05:41,085 INFO L130 PetriNetUnfolder]: 55320/75974 cut-off events. [2023-01-28 04:05:41,085 INFO L131 PetriNetUnfolder]: For 974343/1006837 co-relation queries the response was YES. [2023-01-28 04:05:41,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481478 conditions, 75974 events. 55320/75974 cut-off events. For 974343/1006837 co-relation queries the response was YES. Maximal size of possible extension queue 3587. Compared 506851 event pairs, 13827 based on Foata normal form. 15177/90969 useless extension candidates. Maximal degree in co-relation 422526. Up to 57946 conditions per place. [2023-01-28 04:05:42,213 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 691 selfloop transitions, 103 changer transitions 0/802 dead transitions. [2023-01-28 04:05:42,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 802 transitions, 11760 flow [2023-01-28 04:05:42,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 04:05:42,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 04:05:42,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1200 transitions. [2023-01-28 04:05:42,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145797598627787 [2023-01-28 04:05:42,214 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1200 transitions. [2023-01-28 04:05:42,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1200 transitions. [2023-01-28 04:05:42,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:05:42,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1200 transitions. [2023-01-28 04:05:42,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 109.0909090909091) internal successors, (1200), 11 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:42,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:42,217 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:42,217 INFO L175 Difference]: Start difference. First operand has 161 places, 372 transitions, 5050 flow. Second operand 11 states and 1200 transitions. [2023-01-28 04:05:42,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 802 transitions, 11760 flow [2023-01-28 04:05:48,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 802 transitions, 11424 flow, removed 99 selfloop flow, removed 5 redundant places. [2023-01-28 04:05:48,884 INFO L231 Difference]: Finished difference. Result has 171 places, 427 transitions, 5892 flow [2023-01-28 04:05:48,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=4749, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5892, PETRI_PLACES=171, PETRI_TRANSITIONS=427} [2023-01-28 04:05:48,885 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 133 predicate places. [2023-01-28 04:05:48,885 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 427 transitions, 5892 flow [2023-01-28 04:05:48,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 98.15384615384616) internal successors, (1276), 13 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:48,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:05:48,885 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:05:48,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 04:05:49,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-01-28 04:05:49,086 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:05:49,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:05:49,086 INFO L85 PathProgramCache]: Analyzing trace with hash 219334723, now seen corresponding path program 7 times [2023-01-28 04:05:49,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:05:49,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464258429] [2023-01-28 04:05:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:05:49,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:05:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:05:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:49,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:05:49,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464258429] [2023-01-28 04:05:49,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464258429] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:05:49,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598203262] [2023-01-28 04:05:49,135 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:05:49,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:05:49,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:05:49,136 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:05:49,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 04:05:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:05:49,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:05:49,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:05:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:49,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:05:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:05:49,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598203262] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:05:49,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:05:49,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-01-28 04:05:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324794905] [2023-01-28 04:05:49,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:05:49,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 04:05:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:05:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 04:05:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-01-28 04:05:49,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:05:49,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 427 transitions, 5892 flow. Second operand has 12 states, 12 states have (on average 97.83333333333333) internal successors, (1174), 12 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:05:49,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:05:49,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:05:49,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:06:01,273 INFO L130 PetriNetUnfolder]: 61521/85623 cut-off events. [2023-01-28 04:06:01,273 INFO L131 PetriNetUnfolder]: For 1297055/1334172 co-relation queries the response was YES. [2023-01-28 04:06:02,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573590 conditions, 85623 events. 61521/85623 cut-off events. For 1297055/1334172 co-relation queries the response was YES. Maximal size of possible extension queue 4184. Compared 604658 event pairs, 10504 based on Foata normal form. 16393/101726 useless extension candidates. Maximal degree in co-relation 503489. Up to 29926 conditions per place. [2023-01-28 04:06:02,737 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 1284 selfloop transitions, 171 changer transitions 13/1476 dead transitions. [2023-01-28 04:06:02,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 1476 transitions, 21403 flow [2023-01-28 04:06:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 04:06:02,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 04:06:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1960 transitions. [2023-01-28 04:06:02,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136268343815513 [2023-01-28 04:06:02,739 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1960 transitions. [2023-01-28 04:06:02,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1960 transitions. [2023-01-28 04:06:02,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:06:02,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1960 transitions. [2023-01-28 04:06:02,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 108.88888888888889) internal successors, (1960), 18 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:06:02,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 212.0) internal successors, (4028), 19 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:06:02,744 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 212.0) internal successors, (4028), 19 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:06:02,744 INFO L175 Difference]: Start difference. First operand has 171 places, 427 transitions, 5892 flow. Second operand 18 states and 1960 transitions. [2023-01-28 04:06:02,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 1476 transitions, 21403 flow [2023-01-28 04:06:13,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 1476 transitions, 20887 flow, removed 245 selfloop flow, removed 2 redundant places. [2023-01-28 04:06:13,041 INFO L231 Difference]: Finished difference. Result has 192 places, 492 transitions, 6725 flow [2023-01-28 04:06:13,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=5402, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6725, PETRI_PLACES=192, PETRI_TRANSITIONS=492} [2023-01-28 04:06:13,042 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 154 predicate places. [2023-01-28 04:06:13,042 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 492 transitions, 6725 flow [2023-01-28 04:06:13,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 97.83333333333333) internal successors, (1174), 12 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:06:13,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:06:13,042 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:06:13,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 04:06:13,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:06:13,246 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:06:13,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:06:13,247 INFO L85 PathProgramCache]: Analyzing trace with hash -953766959, now seen corresponding path program 8 times [2023-01-28 04:06:13,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:06:13,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918874108] [2023-01-28 04:06:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:06:13,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:06:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:06:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:06:13,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:06:13,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918874108] [2023-01-28 04:06:13,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918874108] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:06:13,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354542058] [2023-01-28 04:06:13,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:06:13,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:06:13,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:06:13,309 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:06:13,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 04:06:13,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:06:13,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:06:13,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:06:13,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:06:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:06:13,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:06:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:06:13,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354542058] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:06:13,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:06:13,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-01-28 04:06:13,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116455906] [2023-01-28 04:06:13,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:06:13,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 04:06:13,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:06:13,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 04:06:13,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-01-28 04:06:13,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:06:13,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 492 transitions, 6725 flow. Second operand has 13 states, 13 states have (on average 98.3076923076923) internal successors, (1278), 13 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:06:13,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:06:13,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:06:13,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:06:26,029 INFO L130 PetriNetUnfolder]: 60289/83939 cut-off events. [2023-01-28 04:06:26,029 INFO L131 PetriNetUnfolder]: For 1330333/1365514 co-relation queries the response was YES. [2023-01-28 04:06:27,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566957 conditions, 83939 events. 60289/83939 cut-off events. For 1330333/1365514 co-relation queries the response was YES. Maximal size of possible extension queue 4059. Compared 591297 event pairs, 13863 based on Foata normal form. 15035/98547 useless extension candidates. Maximal degree in co-relation 546224. Up to 40901 conditions per place. [2023-01-28 04:06:27,469 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 1088 selfloop transitions, 156 changer transitions 52/1304 dead transitions. [2023-01-28 04:06:27,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 1304 transitions, 18926 flow [2023-01-28 04:06:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 04:06:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 04:06:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1949 transitions. [2023-01-28 04:06:27,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5107442348008385 [2023-01-28 04:06:27,471 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1949 transitions. [2023-01-28 04:06:27,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1949 transitions. [2023-01-28 04:06:27,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:06:27,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1949 transitions. [2023-01-28 04:06:27,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 108.27777777777777) internal successors, (1949), 18 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:06:27,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 212.0) internal successors, (4028), 19 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:06:27,476 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 212.0) internal successors, (4028), 19 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:06:27,476 INFO L175 Difference]: Start difference. First operand has 192 places, 492 transitions, 6725 flow. Second operand 18 states and 1949 transitions. [2023-01-28 04:06:27,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 1304 transitions, 18926 flow [2023-01-28 04:06:41,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 1304 transitions, 18628 flow, removed 96 selfloop flow, removed 6 redundant places. [2023-01-28 04:06:41,071 INFO L231 Difference]: Finished difference. Result has 205 places, 497 transitions, 6863 flow [2023-01-28 04:06:41,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=6431, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6863, PETRI_PLACES=205, PETRI_TRANSITIONS=497} [2023-01-28 04:06:41,072 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 167 predicate places. [2023-01-28 04:06:41,072 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 497 transitions, 6863 flow [2023-01-28 04:06:41,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 98.3076923076923) internal successors, (1278), 13 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:06:41,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:06:41,072 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:06:41,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-01-28 04:06:41,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-01-28 04:06:41,277 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:06:41,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:06:41,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1142683924, now seen corresponding path program 9 times [2023-01-28 04:06:41,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:06:41,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683211830] [2023-01-28 04:06:41,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:06:41,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:06:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:06:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:06:41,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:06:41,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683211830] [2023-01-28 04:06:41,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683211830] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:06:41,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196315527] [2023-01-28 04:06:41,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:06:41,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:06:41,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:06:41,333 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:06:41,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 04:06:41,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:06:41,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:06:41,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:06:41,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:06:41,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:06:41,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:06:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:06:41,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196315527] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:06:41,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:06:41,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-01-28 04:06:41,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382823084] [2023-01-28 04:06:41,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:06:41,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 04:06:41,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:06:41,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 04:06:41,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-01-28 04:06:41,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:06:41,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 497 transitions, 6863 flow. Second operand has 12 states, 12 states have (on average 98.66666666666667) internal successors, (1184), 12 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:06:41,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:06:41,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:06:41,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:06:58,672 INFO L130 PetriNetUnfolder]: 75941/105716 cut-off events. [2023-01-28 04:06:58,672 INFO L131 PetriNetUnfolder]: For 1613808/1657279 co-relation queries the response was YES. [2023-01-28 04:07:00,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688507 conditions, 105716 events. 75941/105716 cut-off events. For 1613808/1657279 co-relation queries the response was YES. Maximal size of possible extension queue 4980. Compared 754196 event pairs, 15165 based on Foata normal form. 20393/125897 useless extension candidates. Maximal degree in co-relation 651103. Up to 55992 conditions per place. [2023-01-28 04:07:00,630 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 866 selfloop transitions, 211 changer transitions 0/1085 dead transitions. [2023-01-28 04:07:00,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 1085 transitions, 16068 flow [2023-01-28 04:07:00,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 04:07:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 04:07:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1537 transitions. [2023-01-28 04:07:00,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2023-01-28 04:07:00,632 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1537 transitions. [2023-01-28 04:07:00,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1537 transitions. [2023-01-28 04:07:00,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:07:00,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1537 transitions. [2023-01-28 04:07:00,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.78571428571429) internal successors, (1537), 14 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:07:00,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 212.0) internal successors, (3180), 15 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:07:00,635 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 212.0) internal successors, (3180), 15 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:07:00,635 INFO L175 Difference]: Start difference. First operand has 205 places, 497 transitions, 6863 flow. Second operand 14 states and 1537 transitions. [2023-01-28 04:07:00,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 1085 transitions, 16068 flow [2023-01-28 04:07:13,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 1085 transitions, 15904 flow, removed 8 selfloop flow, removed 10 redundant places. [2023-01-28 04:07:13,720 INFO L231 Difference]: Finished difference. Result has 213 places, 583 transitions, 8800 flow [2023-01-28 04:07:13,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=6715, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8800, PETRI_PLACES=213, PETRI_TRANSITIONS=583} [2023-01-28 04:07:13,721 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 175 predicate places. [2023-01-28 04:07:13,721 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 583 transitions, 8800 flow [2023-01-28 04:07:13,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 98.66666666666667) internal successors, (1184), 12 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:07:13,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:07:13,721 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:07:13,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 04:07:13,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:07:13,926 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:07:13,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:07:13,926 INFO L85 PathProgramCache]: Analyzing trace with hash -707100586, now seen corresponding path program 10 times [2023-01-28 04:07:13,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:07:13,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560248599] [2023-01-28 04:07:13,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:07:13,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:07:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:07:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:07:13,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:07:13,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560248599] [2023-01-28 04:07:13,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560248599] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:07:13,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696743374] [2023-01-28 04:07:13,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:07:13,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:07:13,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:07:13,977 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:07:13,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 04:07:14,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:07:14,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:07:14,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:07:14,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:07:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:07:14,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:07:14,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:07:14,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696743374] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:07:14,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:07:14,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-01-28 04:07:14,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278729198] [2023-01-28 04:07:14,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:07:14,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 04:07:14,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:07:14,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 04:07:14,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-01-28 04:07:14,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:07:14,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 583 transitions, 8800 flow. Second operand has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:07:14,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:07:14,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:07:14,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:07:32,184 INFO L130 PetriNetUnfolder]: 79900/111345 cut-off events. [2023-01-28 04:07:32,184 INFO L131 PetriNetUnfolder]: For 1877284/1924794 co-relation queries the response was YES. [2023-01-28 04:07:33,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767209 conditions, 111345 events. 79900/111345 cut-off events. For 1877284/1924794 co-relation queries the response was YES. Maximal size of possible extension queue 5338. Compared 812453 event pairs, 4913 based on Foata normal form. 20623/131853 useless extension candidates. Maximal degree in co-relation 727022. Up to 30749 conditions per place. [2023-01-28 04:07:34,575 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 1239 selfloop transitions, 313 changer transitions 19/1579 dead transitions. [2023-01-28 04:07:34,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 1579 transitions, 24853 flow [2023-01-28 04:07:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 04:07:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 04:07:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2039 transitions. [2023-01-28 04:07:34,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062065541211519 [2023-01-28 04:07:34,578 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2039 transitions. [2023-01-28 04:07:34,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2039 transitions. [2023-01-28 04:07:34,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:07:34,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2039 transitions. [2023-01-28 04:07:34,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 107.3157894736842) internal successors, (2039), 19 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:07:34,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 212.0) internal successors, (4240), 20 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:07:34,582 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 212.0) internal successors, (4240), 20 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:07:34,582 INFO L175 Difference]: Start difference. First operand has 213 places, 583 transitions, 8800 flow. Second operand 19 states and 2039 transitions. [2023-01-28 04:07:34,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 1579 transitions, 24853 flow [2023-01-28 04:07:58,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 1579 transitions, 24077 flow, removed 293 selfloop flow, removed 9 redundant places. [2023-01-28 04:07:58,824 INFO L231 Difference]: Finished difference. Result has 227 places, 708 transitions, 11108 flow [2023-01-28 04:07:58,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=8040, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11108, PETRI_PLACES=227, PETRI_TRANSITIONS=708} [2023-01-28 04:07:58,825 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 189 predicate places. [2023-01-28 04:07:58,825 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 708 transitions, 11108 flow [2023-01-28 04:07:58,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:07:58,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:07:58,825 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:07:58,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 04:07:59,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:07:59,030 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:07:59,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:07:59,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1904532894, now seen corresponding path program 11 times [2023-01-28 04:07:59,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:07:59,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222399723] [2023-01-28 04:07:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:07:59,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:07:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:07:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:07:59,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:07:59,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222399723] [2023-01-28 04:07:59,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222399723] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:07:59,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060264709] [2023-01-28 04:07:59,080 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:07:59,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:07:59,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:07:59,081 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:07:59,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 04:07:59,176 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:07:59,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:07:59,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:07:59,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:07:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:07:59,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:07:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:07:59,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060264709] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:07:59,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:07:59,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-01-28 04:07:59,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311659910] [2023-01-28 04:07:59,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:07:59,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 04:07:59,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:07:59,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 04:07:59,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-01-28 04:07:59,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:07:59,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 708 transitions, 11108 flow. Second operand has 13 states, 13 states have (on average 98.0) internal successors, (1274), 13 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:07:59,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:07:59,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:07:59,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:08:25,110 INFO L130 PetriNetUnfolder]: 104986/147241 cut-off events. [2023-01-28 04:08:25,110 INFO L131 PetriNetUnfolder]: For 2646723/2707605 co-relation queries the response was YES. [2023-01-28 04:08:27,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041467 conditions, 147241 events. 104986/147241 cut-off events. For 2646723/2707605 co-relation queries the response was YES. Maximal size of possible extension queue 6943. Compared 1119030 event pairs, 6087 based on Foata normal form. 27299/174445 useless extension candidates. Maximal degree in co-relation 946521. Up to 43024 conditions per place. [2023-01-28 04:08:28,186 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 1557 selfloop transitions, 457 changer transitions 36/2058 dead transitions. [2023-01-28 04:08:28,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 2058 transitions, 32989 flow [2023-01-28 04:08:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 04:08:28,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 04:08:28,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2271 transitions. [2023-01-28 04:08:28,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101078167115903 [2023-01-28 04:08:28,188 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2271 transitions. [2023-01-28 04:08:28,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2271 transitions. [2023-01-28 04:08:28,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:08:28,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2271 transitions. [2023-01-28 04:08:28,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 108.14285714285714) internal successors, (2271), 21 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:08:28,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 212.0) internal successors, (4664), 22 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:08:28,193 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 212.0) internal successors, (4664), 22 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:08:28,193 INFO L175 Difference]: Start difference. First operand has 227 places, 708 transitions, 11108 flow. Second operand 21 states and 2271 transitions. [2023-01-28 04:08:28,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 2058 transitions, 32989 flow [2023-01-28 04:09:14,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 2058 transitions, 32333 flow, removed 255 selfloop flow, removed 10 redundant places. [2023-01-28 04:09:14,281 INFO L231 Difference]: Finished difference. Result has 246 places, 890 transitions, 15693 flow [2023-01-28 04:09:14,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=10582, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=15693, PETRI_PLACES=246, PETRI_TRANSITIONS=890} [2023-01-28 04:09:14,282 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 208 predicate places. [2023-01-28 04:09:14,282 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 890 transitions, 15693 flow [2023-01-28 04:09:14,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 98.0) internal successors, (1274), 13 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:09:14,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:09:14,283 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:09:14,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 04:09:14,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:09:14,488 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:09:14,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:09:14,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1656990560, now seen corresponding path program 12 times [2023-01-28 04:09:14,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:09:14,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024569521] [2023-01-28 04:09:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:09:14,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:09:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:09:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:09:14,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:09:14,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024569521] [2023-01-28 04:09:14,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024569521] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:09:14,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117499761] [2023-01-28 04:09:14,547 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:09:14,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:09:14,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:09:14,549 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:09:14,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 04:09:14,654 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 04:09:14,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:09:14,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:09:14,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:09:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:09:14,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:09:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:09:14,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117499761] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:09:14,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:09:14,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-01-28 04:09:14,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536493619] [2023-01-28 04:09:14,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:09:14,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 04:09:14,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:09:14,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 04:09:14,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-01-28 04:09:14,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:09:14,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 890 transitions, 15693 flow. Second operand has 13 states, 13 states have (on average 97.84615384615384) internal successors, (1272), 13 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:09:14,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:09:14,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:09:14,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:09:49,281 INFO L130 PetriNetUnfolder]: 119992/168155 cut-off events. [2023-01-28 04:09:49,281 INFO L131 PetriNetUnfolder]: For 3573220/3640633 co-relation queries the response was YES. [2023-01-28 04:09:52,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238812 conditions, 168155 events. 119992/168155 cut-off events. For 3573220/3640633 co-relation queries the response was YES. Maximal size of possible extension queue 7694. Compared 1278622 event pairs, 24151 based on Foata normal form. 30719/198701 useless extension candidates. Maximal degree in co-relation 1204497. Up to 59696 conditions per place. [2023-01-28 04:09:52,963 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 1085 selfloop transitions, 623 changer transitions 0/1716 dead transitions. [2023-01-28 04:09:52,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 1716 transitions, 30098 flow [2023-01-28 04:09:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 04:09:52,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 04:09:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1651 transitions. [2023-01-28 04:09:52,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519182389937107 [2023-01-28 04:09:52,965 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1651 transitions. [2023-01-28 04:09:52,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1651 transitions. [2023-01-28 04:09:52,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:09:52,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1651 transitions. [2023-01-28 04:09:52,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 110.06666666666666) internal successors, (1651), 15 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:09:52,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 212.0) internal successors, (3392), 16 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:09:52,968 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 212.0) internal successors, (3392), 16 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:09:52,968 INFO L175 Difference]: Start difference. First operand has 246 places, 890 transitions, 15693 flow. Second operand 15 states and 1651 transitions. [2023-01-28 04:09:52,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 1716 transitions, 30098 flow [2023-01-28 04:11:45,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 1716 transitions, 29389 flow, removed 323 selfloop flow, removed 5 redundant places. [2023-01-28 04:11:45,568 INFO L231 Difference]: Finished difference. Result has 260 places, 1048 transitions, 20168 flow [2023-01-28 04:11:45,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=14976, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=885, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=460, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=20168, PETRI_PLACES=260, PETRI_TRANSITIONS=1048} [2023-01-28 04:11:45,569 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 222 predicate places. [2023-01-28 04:11:45,569 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 1048 transitions, 20168 flow [2023-01-28 04:11:45,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 97.84615384615384) internal successors, (1272), 13 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:11:45,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:11:45,569 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:11:45,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 04:11:45,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:11:45,772 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:11:45,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:11:45,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1096448224, now seen corresponding path program 13 times [2023-01-28 04:11:45,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:11:45,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600843131] [2023-01-28 04:11:45,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:11:45,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:11:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:11:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:11:45,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:11:45,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600843131] [2023-01-28 04:11:45,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600843131] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:11:45,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617485692] [2023-01-28 04:11:45,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:11:45,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:11:45,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:11:45,838 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:11:45,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 04:11:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:11:45,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:11:45,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:11:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:11:45,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:11:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:11:46,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617485692] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:11:46,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:11:46,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-01-28 04:11:46,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858640540] [2023-01-28 04:11:46,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:11:46,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 04:11:46,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:11:46,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 04:11:46,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-01-28 04:11:46,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:11:46,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 1048 transitions, 20168 flow. Second operand has 15 states, 15 states have (on average 97.53333333333333) internal successors, (1463), 15 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:11:46,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:11:46,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:11:46,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:12:24,628 INFO L130 PetriNetUnfolder]: 124412/173892 cut-off events. [2023-01-28 04:12:24,628 INFO L131 PetriNetUnfolder]: For 3825811/3897963 co-relation queries the response was YES. [2023-01-28 04:12:27,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327469 conditions, 173892 events. 124412/173892 cut-off events. For 3825811/3897963 co-relation queries the response was YES. Maximal size of possible extension queue 8165. Compared 1334616 event pairs, 8101 based on Foata normal form. 31835/205628 useless extension candidates. Maximal degree in co-relation 1312148. Up to 53618 conditions per place. [2023-01-28 04:12:28,540 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 1611 selfloop transitions, 523 changer transitions 81/2223 dead transitions. [2023-01-28 04:12:28,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 2223 transitions, 39683 flow [2023-01-28 04:12:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 04:12:28,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 04:12:28,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2469 transitions. [2023-01-28 04:12:28,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506357670221493 [2023-01-28 04:12:28,542 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2469 transitions. [2023-01-28 04:12:28,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2469 transitions. [2023-01-28 04:12:28,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:12:28,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2469 transitions. [2023-01-28 04:12:28,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 107.34782608695652) internal successors, (2469), 23 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:12:28,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 212.0) internal successors, (5088), 24 states have internal predecessors, (5088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:12:28,547 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 212.0) internal successors, (5088), 24 states have internal predecessors, (5088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:12:28,547 INFO L175 Difference]: Start difference. First operand has 260 places, 1048 transitions, 20168 flow. Second operand 23 states and 2469 transitions. [2023-01-28 04:12:28,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 2223 transitions, 39683 flow [2023-01-28 04:15:43,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 2223 transitions, 39010 flow, removed 199 selfloop flow, removed 9 redundant places. [2023-01-28 04:15:43,349 INFO L231 Difference]: Finished difference. Result has 280 places, 1066 transitions, 21679 flow [2023-01-28 04:15:43,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=19387, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=497, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=21679, PETRI_PLACES=280, PETRI_TRANSITIONS=1066} [2023-01-28 04:15:43,350 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 242 predicate places. [2023-01-28 04:15:43,350 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 1066 transitions, 21679 flow [2023-01-28 04:15:43,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.53333333333333) internal successors, (1463), 15 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:15:43,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:15:43,350 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:15:43,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 04:15:43,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-01-28 04:15:43,551 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 04:15:43,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:15:43,551 INFO L85 PathProgramCache]: Analyzing trace with hash 608725755, now seen corresponding path program 14 times [2023-01-28 04:15:43,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:15:43,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039662805] [2023-01-28 04:15:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:15:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:15:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:15:43,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:15:43,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:15:43,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039662805] [2023-01-28 04:15:43,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039662805] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:15:43,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3679087] [2023-01-28 04:15:43,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:15:43,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:15:43,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:15:43,599 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:15:43,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 04:15:43,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:15:43,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:15:43,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:15:43,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:15:43,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:15:43,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:15:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:15:43,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3679087] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:15:43,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:15:43,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-01-28 04:15:43,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909840511] [2023-01-28 04:15:43,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:15:43,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 04:15:43,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:15:43,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 04:15:43,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-01-28 04:15:43,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 212 [2023-01-28 04:15:43,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 1066 transitions, 21679 flow. Second operand has 11 states, 11 states have (on average 98.27272727272727) internal successors, (1081), 11 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:15:43,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:15:43,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 212 [2023-01-28 04:15:43,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:16:28,522 INFO L130 PetriNetUnfolder]: 133467/186906 cut-off events. [2023-01-28 04:16:28,522 INFO L131 PetriNetUnfolder]: For 4711564/4787286 co-relation queries the response was YES. [2023-01-28 04:16:32,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1472743 conditions, 186906 events. 133467/186906 cut-off events. For 4711564/4787286 co-relation queries the response was YES. Maximal size of possible extension queue 8848. Compared 1437648 event pairs, 25075 based on Foata normal form. 33299/219922 useless extension candidates. Maximal degree in co-relation 1400201. Up to 125365 conditions per place. [2023-01-28 04:16:33,016 INFO L137 encePairwiseOnDemand]: 207/212 looper letters, 1081 selfloop transitions, 296 changer transitions 0/1385 dead transitions. [2023-01-28 04:16:33,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 1385 transitions, 29263 flow [2023-01-28 04:16:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:16:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:16:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 761 transitions. [2023-01-28 04:16:33,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128032345013477 [2023-01-28 04:16:33,017 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 761 transitions. [2023-01-28 04:16:33,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 761 transitions. [2023-01-28 04:16:33,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:16:33,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 761 transitions. [2023-01-28 04:16:33,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.71428571428571) internal successors, (761), 7 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:16:33,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:16:33,019 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:16:33,019 INFO L175 Difference]: Start difference. First operand has 280 places, 1066 transitions, 21679 flow. Second operand 7 states and 761 transitions. [2023-01-28 04:16:33,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 1385 transitions, 29263 flow Received shutdown request... [2023-01-28 04:17:46,913 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:17:46,914 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:17:47,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-01-28 04:17:47,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-28 04:17:48,242 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 04:17:48,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-01-28 04:17:48,243 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 04:17:48,244 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-28 04:17:48,244 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 04:17:48,244 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 04:17:48,244 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-28 04:17:48,244 INFO L445 BasicCegarLoop]: Path program histogram: [14, 6, 6, 4, 3, 1, 1] [2023-01-28 04:17:48,246 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 04:17:48,246 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 04:17:48,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 04:17:48 BasicIcfg [2023-01-28 04:17:48,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 04:17:48,248 INFO L158 Benchmark]: Toolchain (without parser) took 800541.71ms. Allocated memory was 343.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 304.7MB in the beginning and 11.1GB in the end (delta: -10.8GB). Peak memory consumption was 10.5GB. Max. memory is 16.0GB. [2023-01-28 04:17:48,248 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 343.9MB. Free memory is still 293.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:17:48,248 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.99ms. Allocated memory is still 343.9MB. Free memory was 304.7MB in the beginning and 293.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 04:17:48,248 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.38ms. Allocated memory is still 343.9MB. Free memory was 293.4MB in the beginning and 292.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:17:48,249 INFO L158 Benchmark]: Boogie Preprocessor took 29.96ms. Allocated memory is still 343.9MB. Free memory was 292.0MB in the beginning and 290.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:17:48,249 INFO L158 Benchmark]: RCFGBuilder took 371.94ms. Allocated memory is still 343.9MB. Free memory was 290.0MB in the beginning and 271.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 04:17:48,249 INFO L158 Benchmark]: TraceAbstraction took 799879.00ms. Allocated memory was 343.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 270.4MB in the beginning and 11.1GB in the end (delta: -10.9GB). Peak memory consumption was 10.5GB. Max. memory is 16.0GB. [2023-01-28 04:17:48,250 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 343.9MB. Free memory is still 293.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 219.99ms. Allocated memory is still 343.9MB. Free memory was 304.7MB in the beginning and 293.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.38ms. Allocated memory is still 343.9MB. Free memory was 293.4MB in the beginning and 292.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.96ms. Allocated memory is still 343.9MB. Free memory was 292.0MB in the beginning and 290.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 371.94ms. Allocated memory is still 343.9MB. Free memory was 290.0MB in the beginning and 271.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 799879.00ms. Allocated memory was 343.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 270.4MB in the beginning and 11.1GB in the end (delta: -10.9GB). Peak memory consumption was 10.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 113 PlacesBefore, 38 PlacesAfterwards, 109 TransitionsBefore, 29 TransitionsAfterwards, 2520 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 87 TotalNumberOfCompositions, 2650 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2534, independent: 2527, independent conditional: 0, independent unconditional: 2527, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1355, independent: 1350, independent conditional: 0, independent unconditional: 1350, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2534, independent: 1177, independent conditional: 0, independent unconditional: 1177, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 1355, unknown conditional: 0, unknown unconditional: 1355] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 90, Positive conditional cache size: 0, Positive unconditional cache size: 90, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 157 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 799.8s, OverallIterations: 35, TraceHistogramMax: 2, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 787.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3832 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3832 mSDsluCounter, 297 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 181 mSDsCounter, 166 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11998 IncrementalHoareTripleChecker+Invalid, 12164 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 166 mSolverCounterUnsat, 116 mSDtfsCounter, 11998 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1506 GetRequests, 1114 SyntacticMatches, 52 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21679occurred in iteration=34, InterpolantAutomatonStates: 293, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1508 NumberOfCodeBlocks, 1493 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 2003 ConstructedInterpolants, 0 QuantifiedInterpolants, 5442 SizeOfPredicates, 51 NumberOfNonLiveVariables, 4284 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 77 InterpolantComputations, 14 PerfectInterpolantSequences, 87/191 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown