./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:50:26,013 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:50:26,071 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:50:26,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:50:26,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:50:26,114 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:50:26,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:50:26,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:50:26,115 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:50:26,117 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:50:26,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:50:26,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:50:26,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:50:26,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:50:26,121 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:50:26,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:50:26,121 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:50:26,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:50:26,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:50:26,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:50:26,122 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:50:26,125 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:50:26,126 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:50:26,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:50:26,126 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:50:26,126 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:50:26,127 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:50:26,127 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:50:26,127 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:50:26,127 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:50:26,128 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:50:26,128 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:50:26,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:50:26,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:50:26,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:50:26,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:50:26,130 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:50:26,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:50:26,130 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:50:26,131 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:50:26,131 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:50:26,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:50:26,131 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2024-10-14 19:50:26,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:50:26,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:50:26,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:50:26,383 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:50:26,384 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:50:26,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-10-14 19:50:27,853 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:50:28,040 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:50:28,041 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-10-14 19:50:28,053 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c85e4452/964c3ea3556a4136befaabaf8e63da73/FLAG1cf73508a [2024-10-14 19:50:28,065 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c85e4452/964c3ea3556a4136befaabaf8e63da73 [2024-10-14 19:50:28,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:50:28,069 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:50:28,072 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:50:28,073 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:50:28,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:50:28,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:50:28" (1/1) ... [2024-10-14 19:50:28,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e154320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28, skipping insertion in model container [2024-10-14 19:50:28,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:50:28" (1/1) ... [2024-10-14 19:50:28,107 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:50:28,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:50:28,300 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:50:28,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:50:28,344 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:50:28,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28 WrapperNode [2024-10-14 19:50:28,345 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:50:28,346 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:50:28,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:50:28,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:50:28,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28" (1/1) ... [2024-10-14 19:50:28,377 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28" (1/1) ... [2024-10-14 19:50:28,425 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2024-10-14 19:50:28,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:50:28,426 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:50:28,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:50:28,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:50:28,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28" (1/1) ... [2024-10-14 19:50:28,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28" (1/1) ... [2024-10-14 19:50:28,438 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28" (1/1) ... [2024-10-14 19:50:28,452 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 19:50:28,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28" (1/1) ... [2024-10-14 19:50:28,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28" (1/1) ... [2024-10-14 19:50:28,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28" (1/1) ... [2024-10-14 19:50:28,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28" (1/1) ... [2024-10-14 19:50:28,466 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28" (1/1) ... [2024-10-14 19:50:28,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28" (1/1) ... [2024-10-14 19:50:28,472 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:50:28,473 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:50:28,473 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:50:28,473 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:50:28,474 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28" (1/1) ... [2024-10-14 19:50:28,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:50:28,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:28,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:50:28,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:50:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:50:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:50:28,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:50:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:50:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:50:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 19:50:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 19:50:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:50:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:50:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:50:28,569 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:50:28,696 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:50:28,697 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:50:28,870 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:50:28,870 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:50:29,003 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:50:29,003 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 19:50:29,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:50:29 BoogieIcfgContainer [2024-10-14 19:50:29,003 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:50:29,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:50:29,005 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:50:29,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:50:29,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:50:28" (1/3) ... [2024-10-14 19:50:29,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190aa9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:50:29, skipping insertion in model container [2024-10-14 19:50:29,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:28" (2/3) ... [2024-10-14 19:50:29,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190aa9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:50:29, skipping insertion in model container [2024-10-14 19:50:29,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:50:29" (3/3) ... [2024-10-14 19:50:29,012 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2024-10-14 19:50:29,026 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:50:29,026 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 19:50:29,026 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:50:29,092 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 19:50:29,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2024-10-14 19:50:29,158 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2024-10-14 19:50:29,159 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 19:50:29,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 3/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-10-14 19:50:29,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2024-10-14 19:50:29,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2024-10-14 19:50:29,177 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:50:29,186 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@55fa8526, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:50:29,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-14 19:50:29,198 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:50:29,198 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-10-14 19:50:29,198 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 19:50:29,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:29,199 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:29,200 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:29,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1751895252, now seen corresponding path program 1 times [2024-10-14 19:50:29,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:29,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096696788] [2024-10-14 19:50:29,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:29,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:30,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:30,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096696788] [2024-10-14 19:50:30,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096696788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:30,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:30,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:50:30,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232084622] [2024-10-14 19:50:30,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:30,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:50:30,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:30,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:50:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:50:30,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:30,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:30,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:30,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:30,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:30,248 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2024-10-14 19:50:30,248 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-14 19:50:30,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1775 event pairs, 124 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2024-10-14 19:50:30,262 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2024-10-14 19:50:30,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2024-10-14 19:50:30,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:50:30,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:50:30,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-10-14 19:50:30,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-14 19:50:30,280 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 54 transitions. [2024-10-14 19:50:30,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2024-10-14 19:50:30,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 19:50:30,288 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2024-10-14 19:50:30,290 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2024-10-14 19:50:30,294 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2024-10-14 19:50:30,294 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2024-10-14 19:50:30,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:30,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:30,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:30,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:50:30,295 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:30,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash 476691239, now seen corresponding path program 1 times [2024-10-14 19:50:30,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:30,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684993292] [2024-10-14 19:50:30,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:30,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:30,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:30,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684993292] [2024-10-14 19:50:30,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684993292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:30,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:30,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:30,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527644700] [2024-10-14 19:50:30,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:30,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:30,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:30,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:30,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:30,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:30,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:30,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:30,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:30,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:30,694 INFO L124 PetriNetUnfolderBase]: 520/743 cut-off events. [2024-10-14 19:50:30,694 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-10-14 19:50:30,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 743 events. 520/743 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2444 event pairs, 203 based on Foata normal form. 16/759 useless extension candidates. Maximal degree in co-relation 529. Up to 536 conditions per place. [2024-10-14 19:50:30,704 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 45 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-10-14 19:50:30,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 58 transitions, 287 flow [2024-10-14 19:50:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:30,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:30,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-10-14 19:50:30,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-10-14 19:50:30,707 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 5 states and 76 transitions. [2024-10-14 19:50:30,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 58 transitions, 287 flow [2024-10-14 19:50:30,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 58 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:50:30,710 INFO L231 Difference]: Finished difference. Result has 31 places, 34 transitions, 156 flow [2024-10-14 19:50:30,711 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=31, PETRI_TRANSITIONS=34} [2024-10-14 19:50:30,711 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-10-14 19:50:30,712 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 34 transitions, 156 flow [2024-10-14 19:50:30,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:30,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:30,713 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:30,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:50:30,713 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:30,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:30,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2146806399, now seen corresponding path program 2 times [2024-10-14 19:50:30,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:30,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534522603] [2024-10-14 19:50:30,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:30,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:30,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:30,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534522603] [2024-10-14 19:50:30,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534522603] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:30,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:30,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:50:30,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746274820] [2024-10-14 19:50:30,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:30,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:50:30,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:50:30,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:50:30,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:30,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:30,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:30,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:30,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:31,050 INFO L124 PetriNetUnfolderBase]: 602/856 cut-off events. [2024-10-14 19:50:31,050 INFO L125 PetriNetUnfolderBase]: For 831/831 co-relation queries the response was YES. [2024-10-14 19:50:31,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2763 conditions, 856 events. 602/856 cut-off events. For 831/831 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2914 event pairs, 136 based on Foata normal form. 31/887 useless extension candidates. Maximal degree in co-relation 1993. Up to 488 conditions per place. [2024-10-14 19:50:31,060 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 57 selfloop transitions, 9 changer transitions 1/68 dead transitions. [2024-10-14 19:50:31,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 68 transitions, 428 flow [2024-10-14 19:50:31,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:50:31,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:50:31,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-10-14 19:50:31,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-10-14 19:50:31,063 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 156 flow. Second operand 4 states and 69 transitions. [2024-10-14 19:50:31,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 68 transitions, 428 flow [2024-10-14 19:50:31,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 68 transitions, 410 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-10-14 19:50:31,069 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 209 flow [2024-10-14 19:50:31,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2024-10-14 19:50:31,071 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-10-14 19:50:31,071 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 209 flow [2024-10-14 19:50:31,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:31,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:31,072 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:31,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:50:31,072 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:31,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:31,073 INFO L85 PathProgramCache]: Analyzing trace with hash 64190845, now seen corresponding path program 3 times [2024-10-14 19:50:31,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:31,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374288420] [2024-10-14 19:50:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:31,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:31,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:31,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374288420] [2024-10-14 19:50:31,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374288420] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:31,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:31,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:31,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694460925] [2024-10-14 19:50:31,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:31,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:31,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:31,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:31,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:31,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:31,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:31,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:31,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:31,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:31,385 INFO L124 PetriNetUnfolderBase]: 710/1003 cut-off events. [2024-10-14 19:50:31,385 INFO L125 PetriNetUnfolderBase]: For 1787/1787 co-relation queries the response was YES. [2024-10-14 19:50:31,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3551 conditions, 1003 events. 710/1003 cut-off events. For 1787/1787 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3465 event pairs, 200 based on Foata normal form. 16/1019 useless extension candidates. Maximal degree in co-relation 2466. Up to 670 conditions per place. [2024-10-14 19:50:31,393 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 49 selfloop transitions, 21 changer transitions 0/71 dead transitions. [2024-10-14 19:50:31,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 71 transitions, 500 flow [2024-10-14 19:50:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-10-14 19:50:31,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-10-14 19:50:31,398 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 209 flow. Second operand 5 states and 75 transitions. [2024-10-14 19:50:31,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 71 transitions, 500 flow [2024-10-14 19:50:31,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 71 transitions, 487 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-14 19:50:31,407 INFO L231 Difference]: Finished difference. Result has 42 places, 49 transitions, 361 flow [2024-10-14 19:50:31,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=42, PETRI_TRANSITIONS=49} [2024-10-14 19:50:31,408 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-10-14 19:50:31,409 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 49 transitions, 361 flow [2024-10-14 19:50:31,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:31,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:31,409 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:31,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 19:50:31,410 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:31,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:31,410 INFO L85 PathProgramCache]: Analyzing trace with hash 941478933, now seen corresponding path program 4 times [2024-10-14 19:50:31,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:31,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273802846] [2024-10-14 19:50:31,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:31,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:31,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:31,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273802846] [2024-10-14 19:50:31,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273802846] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:31,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:31,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:31,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395786464] [2024-10-14 19:50:31,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:31,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:31,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:31,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 49 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:31,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:31,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:31,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:31,734 INFO L124 PetriNetUnfolderBase]: 716/1042 cut-off events. [2024-10-14 19:50:31,735 INFO L125 PetriNetUnfolderBase]: For 3044/3044 co-relation queries the response was YES. [2024-10-14 19:50:31,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4359 conditions, 1042 events. 716/1042 cut-off events. For 3044/3044 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3898 event pairs, 170 based on Foata normal form. 38/1080 useless extension candidates. Maximal degree in co-relation 3043. Up to 509 conditions per place. [2024-10-14 19:50:31,743 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 54 selfloop transitions, 18 changer transitions 3/76 dead transitions. [2024-10-14 19:50:31,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 76 transitions, 606 flow [2024-10-14 19:50:31,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:31,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:31,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-10-14 19:50:31,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-10-14 19:50:31,745 INFO L175 Difference]: Start difference. First operand has 42 places, 49 transitions, 361 flow. Second operand 5 states and 78 transitions. [2024-10-14 19:50:31,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 76 transitions, 606 flow [2024-10-14 19:50:31,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 76 transitions, 582 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-10-14 19:50:31,755 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 412 flow [2024-10-14 19:50:31,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=412, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2024-10-14 19:50:31,756 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2024-10-14 19:50:31,756 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 412 flow [2024-10-14 19:50:31,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:31,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:31,757 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:31,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 19:50:31,757 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:31,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:31,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1244413700, now seen corresponding path program 1 times [2024-10-14 19:50:31,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:31,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315699553] [2024-10-14 19:50:31,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:31,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:31,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:31,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315699553] [2024-10-14 19:50:31,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315699553] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:31,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:31,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:31,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348039150] [2024-10-14 19:50:31,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:31,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:31,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:31,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:31,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:31,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:31,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 412 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:31,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:31,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:31,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:32,080 INFO L124 PetriNetUnfolderBase]: 750/1150 cut-off events. [2024-10-14 19:50:32,080 INFO L125 PetriNetUnfolderBase]: For 4954/4954 co-relation queries the response was YES. [2024-10-14 19:50:32,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4923 conditions, 1150 events. 750/1150 cut-off events. For 4954/4954 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4788 event pairs, 229 based on Foata normal form. 79/1229 useless extension candidates. Maximal degree in co-relation 3412. Up to 586 conditions per place. [2024-10-14 19:50:32,091 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 57 selfloop transitions, 15 changer transitions 11/84 dead transitions. [2024-10-14 19:50:32,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 84 transitions, 725 flow [2024-10-14 19:50:32,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:32,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-10-14 19:50:32,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2024-10-14 19:50:32,092 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 412 flow. Second operand 5 states and 82 transitions. [2024-10-14 19:50:32,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 84 transitions, 725 flow [2024-10-14 19:50:32,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 676 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-14 19:50:32,101 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 435 flow [2024-10-14 19:50:32,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=435, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2024-10-14 19:50:32,102 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-10-14 19:50:32,102 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 435 flow [2024-10-14 19:50:32,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:32,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:32,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:32,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 19:50:32,103 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:32,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:32,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1604808738, now seen corresponding path program 2 times [2024-10-14 19:50:32,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:32,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194722700] [2024-10-14 19:50:32,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:32,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:32,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:32,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194722700] [2024-10-14 19:50:32,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194722700] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:32,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:32,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:50:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364029735] [2024-10-14 19:50:32,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:32,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:50:32,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:32,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:50:32,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:50:32,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:32,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 435 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:32,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:32,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:32,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:32,400 INFO L124 PetriNetUnfolderBase]: 809/1239 cut-off events. [2024-10-14 19:50:32,400 INFO L125 PetriNetUnfolderBase]: For 6276/6276 co-relation queries the response was YES. [2024-10-14 19:50:32,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5744 conditions, 1239 events. 809/1239 cut-off events. For 6276/6276 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5116 event pairs, 200 based on Foata normal form. 47/1286 useless extension candidates. Maximal degree in co-relation 3273. Up to 820 conditions per place. [2024-10-14 19:50:32,408 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 63 selfloop transitions, 9 changer transitions 15/88 dead transitions. [2024-10-14 19:50:32,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 88 transitions, 898 flow [2024-10-14 19:50:32,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:50:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:50:32,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-14 19:50:32,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-10-14 19:50:32,410 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 435 flow. Second operand 4 states and 68 transitions. [2024-10-14 19:50:32,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 88 transitions, 898 flow [2024-10-14 19:50:32,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 857 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:50:32,420 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 462 flow [2024-10-14 19:50:32,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=462, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2024-10-14 19:50:32,420 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-10-14 19:50:32,421 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 462 flow [2024-10-14 19:50:32,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:32,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:32,421 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:32,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 19:50:32,422 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:32,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:32,422 INFO L85 PathProgramCache]: Analyzing trace with hash -600399359, now seen corresponding path program 5 times [2024-10-14 19:50:32,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:32,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641126761] [2024-10-14 19:50:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:32,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:32,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:32,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641126761] [2024-10-14 19:50:32,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641126761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:32,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:32,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:32,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216878220] [2024-10-14 19:50:32,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:32,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:32,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:32,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:32,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:32,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:32,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 462 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:32,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:32,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:32,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:32,690 INFO L124 PetriNetUnfolderBase]: 897/1363 cut-off events. [2024-10-14 19:50:32,691 INFO L125 PetriNetUnfolderBase]: For 7819/7819 co-relation queries the response was YES. [2024-10-14 19:50:32,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6730 conditions, 1363 events. 897/1363 cut-off events. For 7819/7819 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5784 event pairs, 345 based on Foata normal form. 16/1379 useless extension candidates. Maximal degree in co-relation 3929. Up to 1004 conditions per place. [2024-10-14 19:50:32,700 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 56 selfloop transitions, 27 changer transitions 15/99 dead transitions. [2024-10-14 19:50:32,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 99 transitions, 1079 flow [2024-10-14 19:50:32,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-10-14 19:50:32,702 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-10-14 19:50:32,702 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 462 flow. Second operand 5 states and 72 transitions. [2024-10-14 19:50:32,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 99 transitions, 1079 flow [2024-10-14 19:50:32,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 99 transitions, 1059 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-14 19:50:32,712 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 692 flow [2024-10-14 19:50:32,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=692, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2024-10-14 19:50:32,713 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-10-14 19:50:32,714 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 692 flow [2024-10-14 19:50:32,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:32,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:32,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:32,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 19:50:32,715 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:32,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:32,715 INFO L85 PathProgramCache]: Analyzing trace with hash -941363678, now seen corresponding path program 3 times [2024-10-14 19:50:32,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:32,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922163851] [2024-10-14 19:50:32,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:32,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:32,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:32,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922163851] [2024-10-14 19:50:32,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922163851] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:32,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:32,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:50:32,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565419109] [2024-10-14 19:50:32,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:32,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:50:32,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:32,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:50:32,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:50:32,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:32,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 692 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:32,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:32,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:32,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:33,040 INFO L124 PetriNetUnfolderBase]: 947/1449 cut-off events. [2024-10-14 19:50:33,040 INFO L125 PetriNetUnfolderBase]: For 10176/10176 co-relation queries the response was YES. [2024-10-14 19:50:33,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8074 conditions, 1449 events. 947/1449 cut-off events. For 10176/10176 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6265 event pairs, 260 based on Foata normal form. 48/1497 useless extension candidates. Maximal degree in co-relation 6521. Up to 995 conditions per place. [2024-10-14 19:50:33,054 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 70 selfloop transitions, 17 changer transitions 18/106 dead transitions. [2024-10-14 19:50:33,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 106 transitions, 1280 flow [2024-10-14 19:50:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:50:33,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:50:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-14 19:50:33,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-10-14 19:50:33,057 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 692 flow. Second operand 4 states and 68 transitions. [2024-10-14 19:50:33,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 106 transitions, 1280 flow [2024-10-14 19:50:33,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 106 transitions, 1233 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-14 19:50:33,073 INFO L231 Difference]: Finished difference. Result has 63 places, 69 transitions, 782 flow [2024-10-14 19:50:33,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=63, PETRI_TRANSITIONS=69} [2024-10-14 19:50:33,076 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-10-14 19:50:33,076 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 69 transitions, 782 flow [2024-10-14 19:50:33,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:33,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:33,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:33,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 19:50:33,077 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:33,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:33,077 INFO L85 PathProgramCache]: Analyzing trace with hash 813483325, now seen corresponding path program 6 times [2024-10-14 19:50:33,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:33,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443289667] [2024-10-14 19:50:33,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:33,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:33,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:33,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:33,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443289667] [2024-10-14 19:50:33,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443289667] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:33,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:33,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:33,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543180860] [2024-10-14 19:50:33,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:33,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:33,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:33,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:33,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:33,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:33,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 69 transitions, 782 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:33,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:33,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:33,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:33,392 INFO L124 PetriNetUnfolderBase]: 1093/1648 cut-off events. [2024-10-14 19:50:33,392 INFO L125 PetriNetUnfolderBase]: For 12951/12951 co-relation queries the response was YES. [2024-10-14 19:50:33,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9320 conditions, 1648 events. 1093/1648 cut-off events. For 12951/12951 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7114 event pairs, 355 based on Foata normal form. 22/1670 useless extension candidates. Maximal degree in co-relation 7478. Up to 1202 conditions per place. [2024-10-14 19:50:33,405 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 82 selfloop transitions, 26 changer transitions 15/124 dead transitions. [2024-10-14 19:50:33,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 124 transitions, 1668 flow [2024-10-14 19:50:33,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:33,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-10-14 19:50:33,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-10-14 19:50:33,407 INFO L175 Difference]: Start difference. First operand has 63 places, 69 transitions, 782 flow. Second operand 5 states and 70 transitions. [2024-10-14 19:50:33,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 124 transitions, 1668 flow [2024-10-14 19:50:33,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 124 transitions, 1632 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-14 19:50:33,424 INFO L231 Difference]: Finished difference. Result has 68 places, 85 transitions, 1137 flow [2024-10-14 19:50:33,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1137, PETRI_PLACES=68, PETRI_TRANSITIONS=85} [2024-10-14 19:50:33,425 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-10-14 19:50:33,425 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 85 transitions, 1137 flow [2024-10-14 19:50:33,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:33,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:33,426 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:33,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 19:50:33,426 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:33,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:33,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1838687522, now seen corresponding path program 4 times [2024-10-14 19:50:33,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:33,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970691295] [2024-10-14 19:50:33,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:33,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:33,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:33,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970691295] [2024-10-14 19:50:33,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970691295] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:33,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:33,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:33,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493981273] [2024-10-14 19:50:33,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:33,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:33,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:33,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:33,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:33,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:33,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 85 transitions, 1137 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:33,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:33,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:33,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:33,785 INFO L124 PetriNetUnfolderBase]: 1095/1722 cut-off events. [2024-10-14 19:50:33,785 INFO L125 PetriNetUnfolderBase]: For 16310/16310 co-relation queries the response was YES. [2024-10-14 19:50:33,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10486 conditions, 1722 events. 1095/1722 cut-off events. For 16310/16310 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8063 event pairs, 360 based on Foata normal form. 58/1780 useless extension candidates. Maximal degree in co-relation 8101. Up to 1039 conditions per place. [2024-10-14 19:50:33,799 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 92 selfloop transitions, 16 changer transitions 23/132 dead transitions. [2024-10-14 19:50:33,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 132 transitions, 1881 flow [2024-10-14 19:50:33,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:33,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-10-14 19:50:33,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5481481481481482 [2024-10-14 19:50:33,801 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 1137 flow. Second operand 5 states and 74 transitions. [2024-10-14 19:50:33,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 132 transitions, 1881 flow [2024-10-14 19:50:33,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 132 transitions, 1829 flow, removed 26 selfloop flow, removed 0 redundant places. [2024-10-14 19:50:33,826 INFO L231 Difference]: Finished difference. Result has 74 places, 85 transitions, 1164 flow [2024-10-14 19:50:33,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1164, PETRI_PLACES=74, PETRI_TRANSITIONS=85} [2024-10-14 19:50:33,827 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-10-14 19:50:33,827 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 85 transitions, 1164 flow [2024-10-14 19:50:33,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:33,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:33,828 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:33,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 19:50:33,828 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:33,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:33,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1535429971, now seen corresponding path program 1 times [2024-10-14 19:50:33,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:33,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279027223] [2024-10-14 19:50:33,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:33,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:33,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:33,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279027223] [2024-10-14 19:50:33,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279027223] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:33,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:33,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:50:33,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235045418] [2024-10-14 19:50:33,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:33,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:50:33,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:33,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:50:33,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:50:33,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:33,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 85 transitions, 1164 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:33,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:33,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:33,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:34,131 INFO L124 PetriNetUnfolderBase]: 1084/1662 cut-off events. [2024-10-14 19:50:34,132 INFO L125 PetriNetUnfolderBase]: For 18189/18189 co-relation queries the response was YES. [2024-10-14 19:50:34,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10680 conditions, 1662 events. 1084/1662 cut-off events. For 18189/18189 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7398 event pairs, 399 based on Foata normal form. 60/1722 useless extension candidates. Maximal degree in co-relation 8238. Up to 1077 conditions per place. [2024-10-14 19:50:34,142 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 57 selfloop transitions, 43 changer transitions 17/118 dead transitions. [2024-10-14 19:50:34,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 118 transitions, 1737 flow [2024-10-14 19:50:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:50:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:50:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-10-14 19:50:34,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-10-14 19:50:34,144 INFO L175 Difference]: Start difference. First operand has 74 places, 85 transitions, 1164 flow. Second operand 4 states and 64 transitions. [2024-10-14 19:50:34,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 118 transitions, 1737 flow [2024-10-14 19:50:34,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 1670 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-10-14 19:50:34,169 INFO L231 Difference]: Finished difference. Result has 75 places, 85 transitions, 1254 flow [2024-10-14 19:50:34,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1254, PETRI_PLACES=75, PETRI_TRANSITIONS=85} [2024-10-14 19:50:34,170 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-10-14 19:50:34,170 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 85 transitions, 1254 flow [2024-10-14 19:50:34,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:34,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:34,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:34,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 19:50:34,173 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:34,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:34,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1494238209, now seen corresponding path program 7 times [2024-10-14 19:50:34,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:34,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356254926] [2024-10-14 19:50:34,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:34,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:34,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:34,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356254926] [2024-10-14 19:50:34,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356254926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:34,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:34,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:50:34,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412746195] [2024-10-14 19:50:34,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:34,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:50:34,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:34,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:50:34,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:50:34,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:34,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 85 transitions, 1254 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:34,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:34,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:34,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:34,445 INFO L124 PetriNetUnfolderBase]: 1016/1485 cut-off events. [2024-10-14 19:50:34,445 INFO L125 PetriNetUnfolderBase]: For 17518/17518 co-relation queries the response was YES. [2024-10-14 19:50:34,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10166 conditions, 1485 events. 1016/1485 cut-off events. For 17518/17518 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5936 event pairs, 296 based on Foata normal form. 38/1523 useless extension candidates. Maximal degree in co-relation 7855. Up to 983 conditions per place. [2024-10-14 19:50:34,457 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 82 selfloop transitions, 37 changer transitions 3/123 dead transitions. [2024-10-14 19:50:34,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 123 transitions, 1931 flow [2024-10-14 19:50:34,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:50:34,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:50:34,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-10-14 19:50:34,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-10-14 19:50:34,458 INFO L175 Difference]: Start difference. First operand has 75 places, 85 transitions, 1254 flow. Second operand 4 states and 64 transitions. [2024-10-14 19:50:34,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 123 transitions, 1931 flow [2024-10-14 19:50:34,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 123 transitions, 1702 flow, removed 97 selfloop flow, removed 5 redundant places. [2024-10-14 19:50:34,484 INFO L231 Difference]: Finished difference. Result has 69 places, 98 transitions, 1392 flow [2024-10-14 19:50:34,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1392, PETRI_PLACES=69, PETRI_TRANSITIONS=98} [2024-10-14 19:50:34,485 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-10-14 19:50:34,485 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 98 transitions, 1392 flow [2024-10-14 19:50:34,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:34,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:34,485 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:34,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 19:50:34,486 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:34,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:34,486 INFO L85 PathProgramCache]: Analyzing trace with hash -225746625, now seen corresponding path program 1 times [2024-10-14 19:50:34,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:34,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958467619] [2024-10-14 19:50:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:34,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:50:34,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:34,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958467619] [2024-10-14 19:50:34,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958467619] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:34,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790420802] [2024-10-14 19:50:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:34,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:34,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:34,599 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) [2024-10-14 19:50:34,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 19:50:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:34,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:50:34,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:50:34,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:50:34,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790420802] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:34,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:34,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-10-14 19:50:34,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705300756] [2024-10-14 19:50:34,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:34,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 19:50:34,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:34,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 19:50:34,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-14 19:50:34,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:34,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 98 transitions, 1392 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:34,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:34,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:34,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:35,277 INFO L124 PetriNetUnfolderBase]: 1129/1616 cut-off events. [2024-10-14 19:50:35,277 INFO L125 PetriNetUnfolderBase]: For 15808/15808 co-relation queries the response was YES. [2024-10-14 19:50:35,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10834 conditions, 1616 events. 1129/1616 cut-off events. For 15808/15808 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6350 event pairs, 185 based on Foata normal form. 40/1656 useless extension candidates. Maximal degree in co-relation 8588. Up to 855 conditions per place. [2024-10-14 19:50:35,292 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 80 selfloop transitions, 95 changer transitions 2/178 dead transitions. [2024-10-14 19:50:35,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 178 transitions, 2676 flow [2024-10-14 19:50:35,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:50:35,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:50:35,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-10-14 19:50:35,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-10-14 19:50:35,294 INFO L175 Difference]: Start difference. First operand has 69 places, 98 transitions, 1392 flow. Second operand 10 states and 134 transitions. [2024-10-14 19:50:35,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 178 transitions, 2676 flow [2024-10-14 19:50:35,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 178 transitions, 2566 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-10-14 19:50:35,317 INFO L231 Difference]: Finished difference. Result has 78 places, 137 transitions, 2257 flow [2024-10-14 19:50:35,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2257, PETRI_PLACES=78, PETRI_TRANSITIONS=137} [2024-10-14 19:50:35,318 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-10-14 19:50:35,318 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 137 transitions, 2257 flow [2024-10-14 19:50:35,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:35,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:35,318 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:35,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:35,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-14 19:50:35,523 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:35,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:35,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1418388632, now seen corresponding path program 1 times [2024-10-14 19:50:35,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:35,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909639902] [2024-10-14 19:50:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:35,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:35,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:35,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909639902] [2024-10-14 19:50:35,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909639902] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:35,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703671781] [2024-10-14 19:50:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:35,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:35,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:35,745 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) [2024-10-14 19:50:35,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 19:50:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:35,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:50:35,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:35,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:36,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703671781] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:36,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:36,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-10-14 19:50:36,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981199089] [2024-10-14 19:50:36,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:36,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:36,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:36,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:36,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:36,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:36,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 137 transitions, 2257 flow. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:36,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:36,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:36,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:37,067 INFO L124 PetriNetUnfolderBase]: 1599/2297 cut-off events. [2024-10-14 19:50:37,068 INFO L125 PetriNetUnfolderBase]: For 24531/24531 co-relation queries the response was YES. [2024-10-14 19:50:37,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15796 conditions, 2297 events. 1599/2297 cut-off events. For 24531/24531 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 9362 event pairs, 178 based on Foata normal form. 2/2299 useless extension candidates. Maximal degree in co-relation 14418. Up to 1693 conditions per place. [2024-10-14 19:50:37,085 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 158 selfloop transitions, 67 changer transitions 2/228 dead transitions. [2024-10-14 19:50:37,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 228 transitions, 3539 flow [2024-10-14 19:50:37,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:50:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:50:37,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-10-14 19:50:37,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.588477366255144 [2024-10-14 19:50:37,087 INFO L175 Difference]: Start difference. First operand has 78 places, 137 transitions, 2257 flow. Second operand 9 states and 143 transitions. [2024-10-14 19:50:37,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 228 transitions, 3539 flow [2024-10-14 19:50:37,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 228 transitions, 3076 flow, removed 124 selfloop flow, removed 6 redundant places. [2024-10-14 19:50:37,127 INFO L231 Difference]: Finished difference. Result has 83 places, 174 transitions, 2637 flow [2024-10-14 19:50:37,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2637, PETRI_PLACES=83, PETRI_TRANSITIONS=174} [2024-10-14 19:50:37,128 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-10-14 19:50:37,128 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 174 transitions, 2637 flow [2024-10-14 19:50:37,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:37,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:37,128 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:37,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:37,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 19:50:37,329 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:37,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:37,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1276024520, now seen corresponding path program 2 times [2024-10-14 19:50:37,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:37,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135255615] [2024-10-14 19:50:37,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:37,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:37,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:37,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135255615] [2024-10-14 19:50:37,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135255615] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:37,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104784771] [2024-10-14 19:50:37,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:50:37,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:37,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:37,514 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) [2024-10-14 19:50:37,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 19:50:37,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:50:37,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:37,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:50:37,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:37,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:38,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104784771] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:38,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:38,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-10-14 19:50:38,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816921669] [2024-10-14 19:50:38,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:38,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:38,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:38,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:38,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:38,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:38,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 174 transitions, 2637 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:38,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:38,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:38,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:38,913 INFO L124 PetriNetUnfolderBase]: 1895/2729 cut-off events. [2024-10-14 19:50:38,914 INFO L125 PetriNetUnfolderBase]: For 25254/25254 co-relation queries the response was YES. [2024-10-14 19:50:38,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17650 conditions, 2729 events. 1895/2729 cut-off events. For 25254/25254 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11420 event pairs, 297 based on Foata normal form. 2/2731 useless extension candidates. Maximal degree in co-relation 17078. Up to 2155 conditions per place. [2024-10-14 19:50:38,933 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 174 selfloop transitions, 67 changer transitions 2/244 dead transitions. [2024-10-14 19:50:38,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 244 transitions, 3667 flow [2024-10-14 19:50:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:50:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:50:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-10-14 19:50:38,935 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-10-14 19:50:38,935 INFO L175 Difference]: Start difference. First operand has 83 places, 174 transitions, 2637 flow. Second operand 9 states and 140 transitions. [2024-10-14 19:50:38,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 244 transitions, 3667 flow [2024-10-14 19:50:38,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 244 transitions, 3419 flow, removed 109 selfloop flow, removed 1 redundant places. [2024-10-14 19:50:38,975 INFO L231 Difference]: Finished difference. Result has 93 places, 193 transitions, 2881 flow [2024-10-14 19:50:38,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2881, PETRI_PLACES=93, PETRI_TRANSITIONS=193} [2024-10-14 19:50:38,976 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-10-14 19:50:38,976 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 193 transitions, 2881 flow [2024-10-14 19:50:38,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:38,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:38,977 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:38,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 19:50:39,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:39,182 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:39,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:39,182 INFO L85 PathProgramCache]: Analyzing trace with hash 59592076, now seen corresponding path program 3 times [2024-10-14 19:50:39,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:39,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483416737] [2024-10-14 19:50:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:39,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:39,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:39,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483416737] [2024-10-14 19:50:39,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483416737] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:39,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384082205] [2024-10-14 19:50:39,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:50:39,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:39,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:39,372 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) [2024-10-14 19:50:39,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 19:50:39,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 19:50:39,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:39,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:50:39,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:39,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:40,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384082205] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:40,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:40,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-10-14 19:50:40,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957015030] [2024-10-14 19:50:40,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:40,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:50:40,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:40,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:50:40,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:50:40,079 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:40,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 193 transitions, 2881 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:40,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:40,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:40,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:40,703 INFO L124 PetriNetUnfolderBase]: 2345/3383 cut-off events. [2024-10-14 19:50:40,703 INFO L125 PetriNetUnfolderBase]: For 31568/31568 co-relation queries the response was YES. [2024-10-14 19:50:40,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21309 conditions, 3383 events. 2345/3383 cut-off events. For 31568/31568 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 14783 event pairs, 447 based on Foata normal form. 2/3385 useless extension candidates. Maximal degree in co-relation 20919. Up to 2806 conditions per place. [2024-10-14 19:50:40,730 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 212 selfloop transitions, 70 changer transitions 2/285 dead transitions. [2024-10-14 19:50:40,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 285 transitions, 4304 flow [2024-10-14 19:50:40,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:50:40,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:50:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-10-14 19:50:40,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-10-14 19:50:40,732 INFO L175 Difference]: Start difference. First operand has 93 places, 193 transitions, 2881 flow. Second operand 9 states and 140 transitions. [2024-10-14 19:50:40,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 285 transitions, 4304 flow [2024-10-14 19:50:40,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 285 transitions, 4041 flow, removed 102 selfloop flow, removed 2 redundant places. [2024-10-14 19:50:40,786 INFO L231 Difference]: Finished difference. Result has 103 places, 233 transitions, 3482 flow [2024-10-14 19:50:40,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3482, PETRI_PLACES=103, PETRI_TRANSITIONS=233} [2024-10-14 19:50:40,787 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-10-14 19:50:40,787 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 233 transitions, 3482 flow [2024-10-14 19:50:40,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:40,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:40,787 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:40,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:40,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 19:50:40,992 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:40,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:40,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1636981364, now seen corresponding path program 4 times [2024-10-14 19:50:40,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:40,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034789139] [2024-10-14 19:50:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:40,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:41,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:41,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034789139] [2024-10-14 19:50:41,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034789139] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:41,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728803101] [2024-10-14 19:50:41,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:50:41,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:41,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:41,192 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) [2024-10-14 19:50:41,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 19:50:41,258 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:50:41,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:41,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:50:41,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:41,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:41,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728803101] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:41,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:41,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-10-14 19:50:41,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133656308] [2024-10-14 19:50:41,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:41,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:50:41,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:41,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:50:41,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:50:41,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:41,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 233 transitions, 3482 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:41,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:41,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:41,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:42,419 INFO L124 PetriNetUnfolderBase]: 2625/3791 cut-off events. [2024-10-14 19:50:42,419 INFO L125 PetriNetUnfolderBase]: For 35884/35884 co-relation queries the response was YES. [2024-10-14 19:50:42,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23903 conditions, 3791 events. 2625/3791 cut-off events. For 35884/35884 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 16975 event pairs, 561 based on Foata normal form. 2/3793 useless extension candidates. Maximal degree in co-relation 23480. Up to 3264 conditions per place. [2024-10-14 19:50:42,443 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 227 selfloop transitions, 70 changer transitions 2/300 dead transitions. [2024-10-14 19:50:42,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 300 transitions, 4689 flow [2024-10-14 19:50:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:50:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:50:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-10-14 19:50:42,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5596707818930041 [2024-10-14 19:50:42,445 INFO L175 Difference]: Start difference. First operand has 103 places, 233 transitions, 3482 flow. Second operand 9 states and 136 transitions. [2024-10-14 19:50:42,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 300 transitions, 4689 flow [2024-10-14 19:50:42,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 300 transitions, 4341 flow, removed 159 selfloop flow, removed 1 redundant places. [2024-10-14 19:50:42,504 INFO L231 Difference]: Finished difference. Result has 113 places, 252 transitions, 3684 flow [2024-10-14 19:50:42,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3134, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3684, PETRI_PLACES=113, PETRI_TRANSITIONS=252} [2024-10-14 19:50:42,506 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-10-14 19:50:42,506 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 252 transitions, 3684 flow [2024-10-14 19:50:42,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:42,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:42,506 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:42,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 19:50:42,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 19:50:42,707 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:42,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:42,707 INFO L85 PathProgramCache]: Analyzing trace with hash 320976776, now seen corresponding path program 5 times [2024-10-14 19:50:42,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:42,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937734482] [2024-10-14 19:50:42,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:42,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:42,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:42,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937734482] [2024-10-14 19:50:42,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937734482] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:42,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392302377] [2024-10-14 19:50:42,893 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:50:42,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:42,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:42,895 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) [2024-10-14 19:50:42,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 19:50:42,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:50:42,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:42,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:50:42,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:43,070 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:44,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392302377] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:44,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:44,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-10-14 19:50:44,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058114739] [2024-10-14 19:50:44,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:44,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:44,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:44,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:44,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:44,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:44,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 252 transitions, 3684 flow. Second operand has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:44,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:44,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:44,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:44,822 INFO L124 PetriNetUnfolderBase]: 3031/4377 cut-off events. [2024-10-14 19:50:44,822 INFO L125 PetriNetUnfolderBase]: For 41841/41841 co-relation queries the response was YES. [2024-10-14 19:50:44,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27264 conditions, 4377 events. 3031/4377 cut-off events. For 41841/41841 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 20147 event pairs, 692 based on Foata normal form. 2/4379 useless extension candidates. Maximal degree in co-relation 26797. Up to 3855 conditions per place. [2024-10-14 19:50:44,857 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 265 selfloop transitions, 69 changer transitions 2/337 dead transitions. [2024-10-14 19:50:44,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 337 transitions, 5325 flow [2024-10-14 19:50:44,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:50:44,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:50:44,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-10-14 19:50:44,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-10-14 19:50:44,860 INFO L175 Difference]: Start difference. First operand has 113 places, 252 transitions, 3684 flow. Second operand 9 states and 135 transitions. [2024-10-14 19:50:44,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 337 transitions, 5325 flow [2024-10-14 19:50:44,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 337 transitions, 5005 flow, removed 130 selfloop flow, removed 2 redundant places. [2024-10-14 19:50:44,939 INFO L231 Difference]: Finished difference. Result has 123 places, 291 transitions, 4331 flow [2024-10-14 19:50:44,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3364, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4331, PETRI_PLACES=123, PETRI_TRANSITIONS=291} [2024-10-14 19:50:44,939 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-10-14 19:50:44,940 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 291 transitions, 4331 flow [2024-10-14 19:50:44,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:44,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:44,940 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:44,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 19:50:45,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:45,142 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:45,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:45,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1673613192, now seen corresponding path program 6 times [2024-10-14 19:50:45,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:45,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173929722] [2024-10-14 19:50:45,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:45,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:45,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:45,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173929722] [2024-10-14 19:50:45,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173929722] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:45,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449385803] [2024-10-14 19:50:45,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:50:45,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:45,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:45,381 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) [2024-10-14 19:50:45,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 19:50:45,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-14 19:50:45,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:45,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:50:45,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:45,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:47,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449385803] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:47,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:47,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-10-14 19:50:47,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146742830] [2024-10-14 19:50:47,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:47,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:50:47,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:47,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:50:47,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:50:47,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:47,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 291 transitions, 4331 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:47,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:47,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:47,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:48,200 INFO L124 PetriNetUnfolderBase]: 3311/4785 cut-off events. [2024-10-14 19:50:48,200 INFO L125 PetriNetUnfolderBase]: For 47342/47342 co-relation queries the response was YES. [2024-10-14 19:50:48,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29907 conditions, 4785 events. 3311/4785 cut-off events. For 47342/47342 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 22369 event pairs, 816 based on Foata normal form. 2/4787 useless extension candidates. Maximal degree in co-relation 29395. Up to 4281 conditions per place. [2024-10-14 19:50:48,236 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 283 selfloop transitions, 69 changer transitions 2/355 dead transitions. [2024-10-14 19:50:48,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 355 transitions, 5725 flow [2024-10-14 19:50:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:50:48,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:50:48,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-10-14 19:50:48,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.551440329218107 [2024-10-14 19:50:48,237 INFO L175 Difference]: Start difference. First operand has 123 places, 291 transitions, 4331 flow. Second operand 9 states and 134 transitions. [2024-10-14 19:50:48,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 355 transitions, 5725 flow [2024-10-14 19:50:48,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 355 transitions, 5325 flow, removed 185 selfloop flow, removed 1 redundant places. [2024-10-14 19:50:48,335 INFO L231 Difference]: Finished difference. Result has 133 places, 310 transitions, 4551 flow [2024-10-14 19:50:48,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3931, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4551, PETRI_PLACES=133, PETRI_TRANSITIONS=310} [2024-10-14 19:50:48,336 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-10-14 19:50:48,336 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 310 transitions, 4551 flow [2024-10-14 19:50:48,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:48,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:48,337 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:48,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 19:50:48,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:48,541 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:48,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:48,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1211376155, now seen corresponding path program 7 times [2024-10-14 19:50:48,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:48,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828728213] [2024-10-14 19:50:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:48,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:50:48,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:48,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828728213] [2024-10-14 19:50:48,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828728213] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:48,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807127514] [2024-10-14 19:50:48,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:50:48,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:48,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:48,644 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) [2024-10-14 19:50:48,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 19:50:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:48,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:50:48,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:50:48,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:50:48,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807127514] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:48,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:48,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-10-14 19:50:48,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879043431] [2024-10-14 19:50:48,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:48,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:48,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:48,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:48,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:48,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:48,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 310 transitions, 4551 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:48,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:48,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:48,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:49,995 INFO L124 PetriNetUnfolderBase]: 4924/6992 cut-off events. [2024-10-14 19:50:49,995 INFO L125 PetriNetUnfolderBase]: For 73007/73007 co-relation queries the response was YES. [2024-10-14 19:50:50,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42653 conditions, 6992 events. 4924/6992 cut-off events. For 73007/73007 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 33511 event pairs, 434 based on Foata normal form. 48/7040 useless extension candidates. Maximal degree in co-relation 41622. Up to 1831 conditions per place. [2024-10-14 19:50:50,042 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 536 selfloop transitions, 158 changer transitions 0/695 dead transitions. [2024-10-14 19:50:50,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 695 transitions, 10689 flow [2024-10-14 19:50:50,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 19:50:50,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 19:50:50,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2024-10-14 19:50:50,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2024-10-14 19:50:50,044 INFO L175 Difference]: Start difference. First operand has 133 places, 310 transitions, 4551 flow. Second operand 13 states and 204 transitions. [2024-10-14 19:50:50,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 695 transitions, 10689 flow [2024-10-14 19:50:50,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 695 transitions, 9698 flow, removed 465 selfloop flow, removed 2 redundant places. [2024-10-14 19:50:50,222 INFO L231 Difference]: Finished difference. Result has 151 places, 388 transitions, 5873 flow [2024-10-14 19:50:50,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4160, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5873, PETRI_PLACES=151, PETRI_TRANSITIONS=388} [2024-10-14 19:50:50,222 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-10-14 19:50:50,222 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 388 transitions, 5873 flow [2024-10-14 19:50:50,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:50,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:50,223 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:50,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 19:50:50,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-14 19:50:50,423 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:50,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1782818654, now seen corresponding path program 8 times [2024-10-14 19:50:50,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:50,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290168962] [2024-10-14 19:50:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:50,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:50,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:50:50,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:50,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290168962] [2024-10-14 19:50:50,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290168962] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:50,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351213988] [2024-10-14 19:50:50,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:50:50,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:50,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:50,559 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) [2024-10-14 19:50:50,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 19:50:50,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:50:50,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:50,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:50:50,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:50,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:50,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351213988] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:50,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:50,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-14 19:50:50,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478707391] [2024-10-14 19:50:50,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:50,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 19:50:50,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:50,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 19:50:50,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-10-14 19:50:50,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:50,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 388 transitions, 5873 flow. Second operand has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:50,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:50,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:50,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:53,537 INFO L124 PetriNetUnfolderBase]: 6606/9329 cut-off events. [2024-10-14 19:50:53,538 INFO L125 PetriNetUnfolderBase]: For 117218/117218 co-relation queries the response was YES. [2024-10-14 19:50:53,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64933 conditions, 9329 events. 6606/9329 cut-off events. For 117218/117218 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46186 event pairs, 330 based on Foata normal form. 154/9483 useless extension candidates. Maximal degree in co-relation 63171. Up to 2661 conditions per place. [2024-10-14 19:50:53,606 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 618 selfloop transitions, 531 changer transitions 0/1150 dead transitions. [2024-10-14 19:50:53,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1150 transitions, 17909 flow [2024-10-14 19:50:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-14 19:50:53,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-10-14 19:50:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 678 transitions. [2024-10-14 19:50:53,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45656565656565656 [2024-10-14 19:50:53,609 INFO L175 Difference]: Start difference. First operand has 151 places, 388 transitions, 5873 flow. Second operand 55 states and 678 transitions. [2024-10-14 19:50:53,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1150 transitions, 17909 flow [2024-10-14 19:50:53,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1150 transitions, 17109 flow, removed 328 selfloop flow, removed 1 redundant places. [2024-10-14 19:50:53,923 INFO L231 Difference]: Finished difference. Result has 228 places, 724 transitions, 12618 flow [2024-10-14 19:50:53,923 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=5502, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=12618, PETRI_PLACES=228, PETRI_TRANSITIONS=724} [2024-10-14 19:50:53,923 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-10-14 19:50:53,924 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 724 transitions, 12618 flow [2024-10-14 19:50:53,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:53,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:53,924 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:53,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 19:50:54,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:54,124 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:54,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash 900764061, now seen corresponding path program 9 times [2024-10-14 19:50:54,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:54,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200903510] [2024-10-14 19:50:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:54,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:54,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:54,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200903510] [2024-10-14 19:50:54,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200903510] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:54,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542698391] [2024-10-14 19:50:54,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:50:54,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:54,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:54,280 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) [2024-10-14 19:50:54,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 19:50:54,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 19:50:54,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:54,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:50:54,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:54,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:54,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542698391] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:54,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:54,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-10-14 19:50:54,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432850826] [2024-10-14 19:50:54,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:54,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:50:54,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:54,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:50:54,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:50:54,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:54,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 724 transitions, 12618 flow. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:54,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:54,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:54,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:56,959 INFO L124 PetriNetUnfolderBase]: 6855/9752 cut-off events. [2024-10-14 19:50:56,959 INFO L125 PetriNetUnfolderBase]: For 213990/213990 co-relation queries the response was YES. [2024-10-14 19:50:57,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81022 conditions, 9752 events. 6855/9752 cut-off events. For 213990/213990 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 49517 event pairs, 1375 based on Foata normal form. 118/9870 useless extension candidates. Maximal degree in co-relation 80362. Up to 4782 conditions per place. [2024-10-14 19:50:57,067 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 536 selfloop transitions, 384 changer transitions 6/927 dead transitions. [2024-10-14 19:50:57,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 927 transitions, 17146 flow [2024-10-14 19:50:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 19:50:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 19:50:57,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 201 transitions. [2024-10-14 19:50:57,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-10-14 19:50:57,070 INFO L175 Difference]: Start difference. First operand has 228 places, 724 transitions, 12618 flow. Second operand 15 states and 201 transitions. [2024-10-14 19:50:57,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 927 transitions, 17146 flow [2024-10-14 19:50:58,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 927 transitions, 14035 flow, removed 1147 selfloop flow, removed 7 redundant places. [2024-10-14 19:50:58,154 INFO L231 Difference]: Finished difference. Result has 241 places, 789 transitions, 11671 flow [2024-10-14 19:50:58,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9623, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=323, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=11671, PETRI_PLACES=241, PETRI_TRANSITIONS=789} [2024-10-14 19:50:58,155 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-10-14 19:50:58,155 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 789 transitions, 11671 flow [2024-10-14 19:50:58,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:58,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:58,155 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:58,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:58,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-14 19:50:58,357 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:50:58,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:58,357 INFO L85 PathProgramCache]: Analyzing trace with hash -146329803, now seen corresponding path program 10 times [2024-10-14 19:50:58,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:58,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332093568] [2024-10-14 19:50:58,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:58,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:50:58,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:58,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332093568] [2024-10-14 19:50:58,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332093568] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:58,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359478271] [2024-10-14 19:50:58,477 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:50:58,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:58,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:58,479 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) [2024-10-14 19:50:58,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 19:50:58,538 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:50:58,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:58,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:50:58,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:50:58,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:58,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:50:58,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359478271] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:58,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:58,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-14 19:50:58,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824681855] [2024-10-14 19:50:58,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:58,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:58,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:58,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:58,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:58,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:50:58,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 789 transitions, 11671 flow. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:58,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:58,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:50:58,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:00,968 INFO L124 PetriNetUnfolderBase]: 7168/10296 cut-off events. [2024-10-14 19:51:00,969 INFO L125 PetriNetUnfolderBase]: For 256132/256132 co-relation queries the response was YES. [2024-10-14 19:51:01,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81999 conditions, 10296 events. 7168/10296 cut-off events. For 256132/256132 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 53882 event pairs, 1671 based on Foata normal form. 157/10453 useless extension candidates. Maximal degree in co-relation 81247. Up to 5748 conditions per place. [2024-10-14 19:51:01,057 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 664 selfloop transitions, 292 changer transitions 39/996 dead transitions. [2024-10-14 19:51:01,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 996 transitions, 16730 flow [2024-10-14 19:51:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:51:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:51:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-10-14 19:51:01,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-10-14 19:51:01,058 INFO L175 Difference]: Start difference. First operand has 241 places, 789 transitions, 11671 flow. Second operand 8 states and 123 transitions. [2024-10-14 19:51:01,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 996 transitions, 16730 flow [2024-10-14 19:51:02,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 996 transitions, 16119 flow, removed 191 selfloop flow, removed 3 redundant places. [2024-10-14 19:51:02,537 INFO L231 Difference]: Finished difference. Result has 249 places, 847 transitions, 13061 flow [2024-10-14 19:51:02,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=11283, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13061, PETRI_PLACES=249, PETRI_TRANSITIONS=847} [2024-10-14 19:51:02,538 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-10-14 19:51:02,538 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 847 transitions, 13061 flow [2024-10-14 19:51:02,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:02,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:02,539 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:02,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-14 19:51:02,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-14 19:51:02,739 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:51:02,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash 633348975, now seen corresponding path program 11 times [2024-10-14 19:51:02,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:02,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077433517] [2024-10-14 19:51:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:02,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:02,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077433517] [2024-10-14 19:51:02,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077433517] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:02,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183900900] [2024-10-14 19:51:02,891 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:51:02,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:02,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:02,893 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) [2024-10-14 19:51:02,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 19:51:02,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-14 19:51:02,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:02,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:51:02,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:02,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:03,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183900900] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:03,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:03,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-10-14 19:51:03,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547767997] [2024-10-14 19:51:03,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:03,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 19:51:03,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:03,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 19:51:03,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-10-14 19:51:03,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:51:03,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 847 transitions, 13061 flow. Second operand has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:03,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:03,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:51:03,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:06,379 INFO L124 PetriNetUnfolderBase]: 8246/11650 cut-off events. [2024-10-14 19:51:06,379 INFO L125 PetriNetUnfolderBase]: For 342770/342770 co-relation queries the response was YES. [2024-10-14 19:51:06,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101072 conditions, 11650 events. 8246/11650 cut-off events. For 342770/342770 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 60263 event pairs, 1428 based on Foata normal form. 100/11750 useless extension candidates. Maximal degree in co-relation 100475. Up to 6829 conditions per place. [2024-10-14 19:51:06,487 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 651 selfloop transitions, 682 changer transitions 0/1334 dead transitions. [2024-10-14 19:51:06,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 1334 transitions, 24295 flow [2024-10-14 19:51:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-14 19:51:06,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-14 19:51:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 405 transitions. [2024-10-14 19:51:06,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-10-14 19:51:06,489 INFO L175 Difference]: Start difference. First operand has 249 places, 847 transitions, 13061 flow. Second operand 32 states and 405 transitions. [2024-10-14 19:51:06,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 1334 transitions, 24295 flow [2024-10-14 19:51:09,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 1334 transitions, 23520 flow, removed 284 selfloop flow, removed 1 redundant places. [2024-10-14 19:51:09,159 INFO L231 Difference]: Finished difference. Result has 289 places, 1133 transitions, 20695 flow [2024-10-14 19:51:09,160 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=12774, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=431, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=20695, PETRI_PLACES=289, PETRI_TRANSITIONS=1133} [2024-10-14 19:51:09,160 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-10-14 19:51:09,160 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 1133 transitions, 20695 flow [2024-10-14 19:51:09,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:09,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:09,161 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:09,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-14 19:51:09,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-14 19:51:09,362 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:51:09,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:09,362 INFO L85 PathProgramCache]: Analyzing trace with hash -169513561, now seen corresponding path program 12 times [2024-10-14 19:51:09,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:09,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348771083] [2024-10-14 19:51:09,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:09,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:09,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:09,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348771083] [2024-10-14 19:51:09,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348771083] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:09,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39329081] [2024-10-14 19:51:09,539 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:51:09,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:09,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:09,541 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) [2024-10-14 19:51:09,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 19:51:09,607 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-14 19:51:09,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:09,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:51:09,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:09,679 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:09,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39329081] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:09,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:09,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-10-14 19:51:09,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091158466] [2024-10-14 19:51:09,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:09,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 19:51:09,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:09,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 19:51:09,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-10-14 19:51:09,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:51:09,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 1133 transitions, 20695 flow. Second operand has 17 states, 17 states have (on average 7.823529411764706) internal successors, (133), 17 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:09,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:09,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:51:09,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:14,677 INFO L124 PetriNetUnfolderBase]: 9821/13795 cut-off events. [2024-10-14 19:51:14,678 INFO L125 PetriNetUnfolderBase]: For 523256/523256 co-relation queries the response was YES. [2024-10-14 19:51:14,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133081 conditions, 13795 events. 9821/13795 cut-off events. For 523256/523256 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 72523 event pairs, 1271 based on Foata normal form. 441/14236 useless extension candidates. Maximal degree in co-relation 132423. Up to 6234 conditions per place. [2024-10-14 19:51:14,808 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 712 selfloop transitions, 1262 changer transitions 4/1979 dead transitions. [2024-10-14 19:51:14,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 1979 transitions, 42550 flow [2024-10-14 19:51:14,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-10-14 19:51:14,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-10-14 19:51:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 852 transitions. [2024-10-14 19:51:14,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2024-10-14 19:51:14,811 INFO L175 Difference]: Start difference. First operand has 289 places, 1133 transitions, 20695 flow. Second operand 72 states and 852 transitions. [2024-10-14 19:51:14,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 1979 transitions, 42550 flow [2024-10-14 19:51:20,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1979 transitions, 34298 flow, removed 3796 selfloop flow, removed 3 redundant places. [2024-10-14 19:51:20,275 INFO L231 Difference]: Finished difference. Result has 384 places, 1686 transitions, 31255 flow [2024-10-14 19:51:20,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=17202, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=745, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=31255, PETRI_PLACES=384, PETRI_TRANSITIONS=1686} [2024-10-14 19:51:20,276 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-10-14 19:51:20,276 INFO L471 AbstractCegarLoop]: Abstraction has has 384 places, 1686 transitions, 31255 flow [2024-10-14 19:51:20,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.823529411764706) internal successors, (133), 17 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:20,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:20,277 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:20,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-14 19:51:20,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-14 19:51:20,480 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:51:20,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:20,480 INFO L85 PathProgramCache]: Analyzing trace with hash -719253340, now seen corresponding path program 13 times [2024-10-14 19:51:20,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:20,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080275774] [2024-10-14 19:51:20,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:20,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:20,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:20,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080275774] [2024-10-14 19:51:20,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080275774] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:20,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721568727] [2024-10-14 19:51:20,596 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:51:20,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:20,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:20,598 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) [2024-10-14 19:51:20,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 19:51:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:20,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:51:20,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:51:20,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:51:20,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721568727] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:20,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:20,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-10-14 19:51:20,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812591105] [2024-10-14 19:51:20,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:20,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:51:20,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:20,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:51:20,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:51:20,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:51:20,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1686 transitions, 31255 flow. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:20,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:20,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:51:20,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:26,601 INFO L124 PetriNetUnfolderBase]: 11069/15725 cut-off events. [2024-10-14 19:51:26,602 INFO L125 PetriNetUnfolderBase]: For 405116/405116 co-relation queries the response was YES. [2024-10-14 19:51:26,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144483 conditions, 15725 events. 11069/15725 cut-off events. For 405116/405116 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 87144 event pairs, 1290 based on Foata normal form. 443/16168 useless extension candidates. Maximal degree in co-relation 143785. Up to 5695 conditions per place. [2024-10-14 19:51:26,780 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1158 selfloop transitions, 916 changer transitions 325/2400 dead transitions. [2024-10-14 19:51:26,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 2400 transitions, 49033 flow [2024-10-14 19:51:26,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-14 19:51:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-10-14 19:51:26,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 418 transitions. [2024-10-14 19:51:26,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4553376906318083 [2024-10-14 19:51:26,782 INFO L175 Difference]: Start difference. First operand has 384 places, 1686 transitions, 31255 flow. Second operand 34 states and 418 transitions. [2024-10-14 19:51:26,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 2400 transitions, 49033 flow [2024-10-14 19:51:31,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 2400 transitions, 41450 flow, removed 3033 selfloop flow, removed 13 redundant places. [2024-10-14 19:51:31,909 INFO L231 Difference]: Finished difference. Result has 429 places, 1810 transitions, 31132 flow [2024-10-14 19:51:31,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=24893, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=714, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=854, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=31132, PETRI_PLACES=429, PETRI_TRANSITIONS=1810} [2024-10-14 19:51:31,912 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 399 predicate places. [2024-10-14 19:51:31,912 INFO L471 AbstractCegarLoop]: Abstraction has has 429 places, 1810 transitions, 31132 flow [2024-10-14 19:51:31,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:31,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:31,912 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:31,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-14 19:51:32,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:32,113 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:51:32,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:32,113 INFO L85 PathProgramCache]: Analyzing trace with hash -523467501, now seen corresponding path program 14 times [2024-10-14 19:51:32,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:32,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343665846] [2024-10-14 19:51:32,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:32,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:51:32,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:32,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343665846] [2024-10-14 19:51:32,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343665846] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:32,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696800009] [2024-10-14 19:51:32,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:51:32,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:32,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:32,208 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) [2024-10-14 19:51:32,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-14 19:51:32,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:51:32,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:32,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:51:32,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:51:32,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:51:32,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696800009] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:32,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:32,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-10-14 19:51:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964647764] [2024-10-14 19:51:32,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:32,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:51:32,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:32,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:51:32,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:51:32,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:51:32,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 1810 transitions, 31132 flow. Second operand has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:32,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:32,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:51:32,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:39,426 INFO L124 PetriNetUnfolderBase]: 13527/18867 cut-off events. [2024-10-14 19:51:39,426 INFO L125 PetriNetUnfolderBase]: For 546337/546337 co-relation queries the response was YES. [2024-10-14 19:51:39,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184528 conditions, 18867 events. 13527/18867 cut-off events. For 546337/546337 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 103578 event pairs, 984 based on Foata normal form. 472/19339 useless extension candidates. Maximal degree in co-relation 184299. Up to 6528 conditions per place. [2024-10-14 19:51:39,678 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 1990 selfloop transitions, 1206 changer transitions 6/3203 dead transitions. [2024-10-14 19:51:39,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 3203 transitions, 64321 flow [2024-10-14 19:51:39,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-14 19:51:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-14 19:51:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 351 transitions. [2024-10-14 19:51:39,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-14 19:51:39,680 INFO L175 Difference]: Start difference. First operand has 429 places, 1810 transitions, 31132 flow. Second operand 24 states and 351 transitions. [2024-10-14 19:51:39,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 3203 transitions, 64321 flow [2024-10-14 19:51:46,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 3203 transitions, 61551 flow, removed 1279 selfloop flow, removed 11 redundant places. [2024-10-14 19:51:46,370 INFO L231 Difference]: Finished difference. Result has 443 places, 2347 transitions, 44812 flow [2024-10-14 19:51:46,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=30034, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=742, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=904, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=44812, PETRI_PLACES=443, PETRI_TRANSITIONS=2347} [2024-10-14 19:51:46,371 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-10-14 19:51:46,371 INFO L471 AbstractCegarLoop]: Abstraction has has 443 places, 2347 transitions, 44812 flow [2024-10-14 19:51:46,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:46,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:46,372 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:46,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-14 19:51:46,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-14 19:51:46,572 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-14 19:51:46,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:46,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1234135183, now seen corresponding path program 15 times [2024-10-14 19:51:46,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:46,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134101198] [2024-10-14 19:51:46,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:46,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:51:46,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:46,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134101198] [2024-10-14 19:51:46,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134101198] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:46,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253985270] [2024-10-14 19:51:46,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:51:46,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:46,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:46,674 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) [2024-10-14 19:51:46,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-14 19:51:46,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 19:51:46,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:46,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:51:46,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:51:46,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:51:46,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253985270] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:46,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:46,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-10-14 19:51:46,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502854146] [2024-10-14 19:51:46,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:46,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:51:46,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:46,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:51:46,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:51:46,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-14 19:51:46,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 2347 transitions, 44812 flow. Second operand has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:46,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:46,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-14 19:51:46,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand