./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-comm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:53:24,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:53:24,368 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:53:24,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:53:24,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:53:24,405 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:53:24,406 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:53:24,407 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:53:24,407 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:53:24,409 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:53:24,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:53:24,410 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:53:24,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:53:24,412 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:53:24,412 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:53:24,413 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:53:24,413 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:53:24,413 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:53:24,414 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:53:24,414 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:53:24,417 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:53:24,418 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:53:24,418 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:53:24,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:53:24,419 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:53:24,419 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:53:24,419 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:53:24,419 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:53:24,420 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:53:24,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:53:24,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:53:24,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:53:24,421 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:53:24,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:53:24,421 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:53:24,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:53:24,422 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:53:24,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:53:24,422 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:53:24,423 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:53:24,423 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:53:24,423 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:53:24,424 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 [2024-10-11 19:53:24,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:53:24,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:53:24,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:53:24,732 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:53:24,732 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:53:24,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c [2024-10-11 19:53:26,124 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:53:26,340 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:53:26,341 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c [2024-10-11 19:53:26,348 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/63d4276de/37a031d44e0943a883246348f5c75506/FLAG198bbaf3f [2024-10-11 19:53:26,362 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/63d4276de/37a031d44e0943a883246348f5c75506 [2024-10-11 19:53:26,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:53:26,366 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:53:26,368 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:53:26,368 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:53:26,375 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:53:26,376 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:53:26" (1/1) ... [2024-10-11 19:53:26,377 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17097d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26, skipping insertion in model container [2024-10-11 19:53:26,377 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:53:26" (1/1) ... [2024-10-11 19:53:26,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:53:26,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:53:26,600 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:53:26,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:53:26,630 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:53:26,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26 WrapperNode [2024-10-11 19:53:26,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:53:26,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:53:26,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:53:26,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:53:26,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26" (1/1) ... [2024-10-11 19:53:26,644 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26" (1/1) ... [2024-10-11 19:53:26,658 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2024-10-11 19:53:26,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:53:26,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:53:26,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:53:26,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:53:26,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26" (1/1) ... [2024-10-11 19:53:26,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26" (1/1) ... [2024-10-11 19:53:26,671 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26" (1/1) ... [2024-10-11 19:53:26,682 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]. [2024-10-11 19:53:26,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26" (1/1) ... [2024-10-11 19:53:26,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26" (1/1) ... [2024-10-11 19:53:26,686 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26" (1/1) ... [2024-10-11 19:53:26,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26" (1/1) ... [2024-10-11 19:53:26,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26" (1/1) ... [2024-10-11 19:53:26,691 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26" (1/1) ... [2024-10-11 19:53:26,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:53:26,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:53:26,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:53:26,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:53:26,697 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26" (1/1) ... [2024-10-11 19:53:26,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:53:26,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:26,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:53:26,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:53:26,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:53:26,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:53:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:53:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:53:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:53:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:53:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:53:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:53:26,793 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:53:26,889 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:53:26,891 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:53:27,111 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:53:27,111 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:53:27,272 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:53:27,273 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 19:53:27,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:53:27 BoogieIcfgContainer [2024-10-11 19:53:27,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:53:27,277 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:53:27,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:53:27,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:53:27,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:53:26" (1/3) ... [2024-10-11 19:53:27,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8d56c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:53:27, skipping insertion in model container [2024-10-11 19:53:27,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:26" (2/3) ... [2024-10-11 19:53:27,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8d56c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:53:27, skipping insertion in model container [2024-10-11 19:53:27,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:53:27" (3/3) ... [2024-10-11 19:53:27,286 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2024-10-11 19:53:27,304 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:53:27,305 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 19:53:27,306 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:53:27,353 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 19:53:27,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-10-11 19:53:27,424 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-10-11 19:53:27,426 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:53:27,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 2/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-10-11 19:53:27,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-10-11 19:53:27,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-10-11 19:53:27,445 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:53:27,454 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;@1a95dd97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:53:27,455 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 19:53:27,473 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:53:27,473 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-10-11 19:53:27,473 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:53:27,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:27,474 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:27,474 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:27,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1555143576, now seen corresponding path program 1 times [2024-10-11 19:53:27,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:27,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126715754] [2024-10-11 19:53:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:27,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:28,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:28,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126715754] [2024-10-11 19:53:28,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126715754] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:28,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:28,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:53:28,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050434574] [2024-10-11 19:53:28,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:28,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:53:28,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:28,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:53:28,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:53:28,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:28,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:28,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:28,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:28,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:28,294 INFO L124 PetriNetUnfolderBase]: 68/123 cut-off events. [2024-10-11 19:53:28,296 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 19:53:28,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 123 events. 68/123 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 316 event pairs, 22 based on Foata normal form. 2/95 useless extension candidates. Maximal degree in co-relation 220. Up to 72 conditions per place. [2024-10-11 19:53:28,301 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 21 selfloop transitions, 3 changer transitions 1/26 dead transitions. [2024-10-11 19:53:28,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 26 transitions, 123 flow [2024-10-11 19:53:28,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:53:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:53:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2024-10-11 19:53:28,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-11 19:53:28,316 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 39 transitions. [2024-10-11 19:53:28,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 26 transitions, 123 flow [2024-10-11 19:53:28,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 26 transitions, 109 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:53:28,322 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-10-11 19:53:28,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2024-10-11 19:53:28,328 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2024-10-11 19:53:28,330 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-10-11 19:53:28,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:28,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:28,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:28,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:53:28,331 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:28,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:28,332 INFO L85 PathProgramCache]: Analyzing trace with hash 546641926, now seen corresponding path program 1 times [2024-10-11 19:53:28,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:28,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414502979] [2024-10-11 19:53:28,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:28,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:28,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:28,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:28,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414502979] [2024-10-11 19:53:28,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414502979] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:28,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304028511] [2024-10-11 19:53:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:28,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:28,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:28,730 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:28,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:53:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:28,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:53:28,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:28,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:29,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304028511] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:29,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:29,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2024-10-11 19:53:29,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146546530] [2024-10-11 19:53:29,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:29,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 19:53:29,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:29,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 19:53:29,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-11 19:53:29,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:29,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:29,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:29,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:29,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:29,439 INFO L124 PetriNetUnfolderBase]: 70/131 cut-off events. [2024-10-11 19:53:29,439 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-11 19:53:29,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 131 events. 70/131 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 349 event pairs, 6 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 104. Up to 70 conditions per place. [2024-10-11 19:53:29,443 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 23 selfloop transitions, 5 changer transitions 12/41 dead transitions. [2024-10-11 19:53:29,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 41 transitions, 196 flow [2024-10-11 19:53:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:53:29,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:53:29,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-10-11 19:53:29,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-11 19:53:29,446 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 6 states and 65 transitions. [2024-10-11 19:53:29,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 41 transitions, 196 flow [2024-10-11 19:53:29,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 41 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:53:29,449 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 78 flow [2024-10-11 19:53:29,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2024-10-11 19:53:29,450 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2024-10-11 19:53:29,451 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 78 flow [2024-10-11 19:53:29,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:29,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:29,452 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:29,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:29,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:29,656 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:29,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:29,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1014487161, now seen corresponding path program 1 times [2024-10-11 19:53:29,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:29,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571189663] [2024-10-11 19:53:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:29,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:29,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:29,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571189663] [2024-10-11 19:53:29,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571189663] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:29,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380648180] [2024-10-11 19:53:29,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:29,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:29,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:29,884 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:29,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 19:53:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:29,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:53:29,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:30,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:30,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380648180] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:30,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:30,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-10-11 19:53:30,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606344307] [2024-10-11 19:53:30,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:30,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:53:30,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:30,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:53:30,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:53:30,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:30,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 78 flow. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:30,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:30,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:30,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:30,411 INFO L124 PetriNetUnfolderBase]: 62/116 cut-off events. [2024-10-11 19:53:30,411 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-10-11 19:53:30,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 116 events. 62/116 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 298 event pairs, 7 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 322. Up to 67 conditions per place. [2024-10-11 19:53:30,412 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 21 selfloop transitions, 6 changer transitions 12/40 dead transitions. [2024-10-11 19:53:30,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 40 transitions, 226 flow [2024-10-11 19:53:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:53:30,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:53:30,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-10-11 19:53:30,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-11 19:53:30,415 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 78 flow. Second operand 6 states and 63 transitions. [2024-10-11 19:53:30,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 40 transitions, 226 flow [2024-10-11 19:53:30,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 40 transitions, 204 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-11 19:53:30,417 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 94 flow [2024-10-11 19:53:30,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2024-10-11 19:53:30,418 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2024-10-11 19:53:30,418 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 94 flow [2024-10-11 19:53:30,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:30,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:30,418 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:30,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 19:53:30,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:30,623 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:30,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:30,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1697698596, now seen corresponding path program 2 times [2024-10-11 19:53:30,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:30,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252731125] [2024-10-11 19:53:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:30,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:30,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:30,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252731125] [2024-10-11 19:53:30,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252731125] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:30,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457448139] [2024-10-11 19:53:30,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:53:30,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:30,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:30,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:30,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 19:53:30,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:53:30,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:30,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:53:30,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:31,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:31,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457448139] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:31,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:31,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-10-11 19:53:31,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588850046] [2024-10-11 19:53:31,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:31,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:53:31,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:31,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:53:31,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:53:31,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:31,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 94 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:31,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:31,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:31,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:31,385 INFO L124 PetriNetUnfolderBase]: 103/192 cut-off events. [2024-10-11 19:53:31,385 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-11 19:53:31,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 192 events. 103/192 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 581 event pairs, 13 based on Foata normal form. 3/195 useless extension candidates. Maximal degree in co-relation 551. Up to 84 conditions per place. [2024-10-11 19:53:31,388 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 34 selfloop transitions, 18 changer transitions 9/62 dead transitions. [2024-10-11 19:53:31,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 62 transitions, 350 flow [2024-10-11 19:53:31,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:53:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:53:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-10-11 19:53:31,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-10-11 19:53:31,390 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 94 flow. Second operand 10 states and 102 transitions. [2024-10-11 19:53:31,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 62 transitions, 350 flow [2024-10-11 19:53:31,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 62 transitions, 337 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-11 19:53:31,393 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 196 flow [2024-10-11 19:53:31,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-10-11 19:53:31,395 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 17 predicate places. [2024-10-11 19:53:31,395 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 196 flow [2024-10-11 19:53:31,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:31,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:31,396 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:31,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:31,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:31,600 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:31,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:31,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1334400628, now seen corresponding path program 3 times [2024-10-11 19:53:31,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:31,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113138980] [2024-10-11 19:53:31,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:31,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:31,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:31,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:31,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113138980] [2024-10-11 19:53:31,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113138980] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:31,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639479833] [2024-10-11 19:53:31,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:53:31,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:31,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:31,841 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:31,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 19:53:31,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 19:53:31,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:31,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:53:31,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:32,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:32,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:32,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639479833] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:32,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:32,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-10-11 19:53:32,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001598853] [2024-10-11 19:53:32,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:32,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:53:32,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:32,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:53:32,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:53:32,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:32,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 196 flow. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:32,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:32,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:32,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:32,314 INFO L124 PetriNetUnfolderBase]: 117/215 cut-off events. [2024-10-11 19:53:32,315 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-10-11 19:53:32,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 215 events. 117/215 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 691 event pairs, 18 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 721. Up to 159 conditions per place. [2024-10-11 19:53:32,320 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 14 changer transitions 6/59 dead transitions. [2024-10-11 19:53:32,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 415 flow [2024-10-11 19:53:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 19:53:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 19:53:32,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-10-11 19:53:32,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 19:53:32,325 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 196 flow. Second operand 8 states and 80 transitions. [2024-10-11 19:53:32,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 415 flow [2024-10-11 19:53:32,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 357 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-10-11 19:53:32,334 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 232 flow [2024-10-11 19:53:32,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=232, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-10-11 19:53:32,335 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 23 predicate places. [2024-10-11 19:53:32,338 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 232 flow [2024-10-11 19:53:32,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:32,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:32,339 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:32,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 19:53:32,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:32,540 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:32,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:32,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1328110415, now seen corresponding path program 2 times [2024-10-11 19:53:32,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:32,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014063273] [2024-10-11 19:53:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:32,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:32,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:32,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:32,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014063273] [2024-10-11 19:53:32,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014063273] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:32,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777130520] [2024-10-11 19:53:32,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:53:32,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:32,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:32,706 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:32,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 19:53:32,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:53:32,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:32,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:53:32,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:32,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:33,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777130520] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:33,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:33,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 12 [2024-10-11 19:53:33,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002940171] [2024-10-11 19:53:33,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:33,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 19:53:33,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 19:53:33,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-10-11 19:53:33,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:33,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 232 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:33,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:33,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:33,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:33,323 INFO L124 PetriNetUnfolderBase]: 148/270 cut-off events. [2024-10-11 19:53:33,323 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-10-11 19:53:33,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 270 events. 148/270 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 960 event pairs, 24 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 910. Up to 211 conditions per place. [2024-10-11 19:53:33,326 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 48 selfloop transitions, 17 changer transitions 4/70 dead transitions. [2024-10-11 19:53:33,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 511 flow [2024-10-11 19:53:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 19:53:33,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 19:53:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-10-11 19:53:33,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-10-11 19:53:33,328 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 232 flow. Second operand 9 states and 87 transitions. [2024-10-11 19:53:33,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 511 flow [2024-10-11 19:53:33,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 461 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-10-11 19:53:33,333 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 310 flow [2024-10-11 19:53:33,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=310, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-10-11 19:53:33,335 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 31 predicate places. [2024-10-11 19:53:33,335 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 310 flow [2024-10-11 19:53:33,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:33,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:33,335 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:33,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 19:53:33,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:33,540 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:33,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:33,540 INFO L85 PathProgramCache]: Analyzing trace with hash 599699803, now seen corresponding path program 3 times [2024-10-11 19:53:33,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:33,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868584243] [2024-10-11 19:53:33,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:33,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:33,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:33,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:33,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868584243] [2024-10-11 19:53:33,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868584243] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:33,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625685675] [2024-10-11 19:53:33,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:53:33,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:33,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:33,717 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:33,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 19:53:33,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 19:53:33,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:33,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:53:33,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:33,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:34,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625685675] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:34,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:34,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 14 [2024-10-11 19:53:34,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106054715] [2024-10-11 19:53:34,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:34,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 19:53:34,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:34,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 19:53:34,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-10-11 19:53:34,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:34,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 310 flow. Second operand has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:34,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:34,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:34,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:34,359 INFO L124 PetriNetUnfolderBase]: 248/454 cut-off events. [2024-10-11 19:53:34,359 INFO L125 PetriNetUnfolderBase]: For 768/768 co-relation queries the response was YES. [2024-10-11 19:53:34,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1668 conditions, 454 events. 248/454 cut-off events. For 768/768 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1914 event pairs, 33 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 1581. Up to 193 conditions per place. [2024-10-11 19:53:34,363 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 62 selfloop transitions, 46 changer transitions 11/120 dead transitions. [2024-10-11 19:53:34,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 120 transitions, 917 flow [2024-10-11 19:53:34,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 19:53:34,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 19:53:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 140 transitions. [2024-10-11 19:53:34,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 19:53:34,365 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 310 flow. Second operand 14 states and 140 transitions. [2024-10-11 19:53:34,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 120 transitions, 917 flow [2024-10-11 19:53:34,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 851 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-10-11 19:53:34,371 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 640 flow [2024-10-11 19:53:34,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=640, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2024-10-11 19:53:34,372 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 51 predicate places. [2024-10-11 19:53:34,372 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 640 flow [2024-10-11 19:53:34,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:34,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:34,373 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:34,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:34,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 19:53:34,577 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:34,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:34,577 INFO L85 PathProgramCache]: Analyzing trace with hash 150856035, now seen corresponding path program 1 times [2024-10-11 19:53:34,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:34,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638481568] [2024-10-11 19:53:34,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:34,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:34,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:34,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638481568] [2024-10-11 19:53:34,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638481568] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:34,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852829392] [2024-10-11 19:53:34,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:34,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:34,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:34,969 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:34,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 19:53:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:35,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:53:35,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:35,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:35,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852829392] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:35,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:35,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-10-11 19:53:35,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503733868] [2024-10-11 19:53:35,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:35,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 19:53:35,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:35,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 19:53:35,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-10-11 19:53:35,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:35,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 640 flow. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 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) [2024-10-11 19:53:35,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:35,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:35,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:37,160 INFO L124 PetriNetUnfolderBase]: 342/643 cut-off events. [2024-10-11 19:53:37,161 INFO L125 PetriNetUnfolderBase]: For 2547/2547 co-relation queries the response was YES. [2024-10-11 19:53:37,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 643 events. 342/643 cut-off events. For 2547/2547 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3135 event pairs, 31 based on Foata normal form. 3/646 useless extension candidates. Maximal degree in co-relation 2773. Up to 313 conditions per place. [2024-10-11 19:53:37,168 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 93 selfloop transitions, 64 changer transitions 30/188 dead transitions. [2024-10-11 19:53:37,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 188 transitions, 1654 flow [2024-10-11 19:53:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 19:53:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 19:53:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 223 transitions. [2024-10-11 19:53:37,171 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46458333333333335 [2024-10-11 19:53:37,172 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 640 flow. Second operand 24 states and 223 transitions. [2024-10-11 19:53:37,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 188 transitions, 1654 flow [2024-10-11 19:53:37,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 188 transitions, 1516 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-10-11 19:53:37,189 INFO L231 Difference]: Finished difference. Result has 102 places, 113 transitions, 1019 flow [2024-10-11 19:53:37,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1019, PETRI_PLACES=102, PETRI_TRANSITIONS=113} [2024-10-11 19:53:37,190 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 80 predicate places. [2024-10-11 19:53:37,191 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 113 transitions, 1019 flow [2024-10-11 19:53:37,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 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) [2024-10-11 19:53:37,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:37,191 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:37,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 19:53:37,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:37,392 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:37,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:37,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1450757137, now seen corresponding path program 2 times [2024-10-11 19:53:37,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:37,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368484536] [2024-10-11 19:53:37,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:37,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:37,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:37,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368484536] [2024-10-11 19:53:37,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368484536] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:37,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668751218] [2024-10-11 19:53:37,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:53:37,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:37,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:37,904 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:37,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 19:53:37,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:53:37,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:37,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:53:37,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:38,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:38,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668751218] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:38,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:38,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-10-11 19:53:38,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750629773] [2024-10-11 19:53:38,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:38,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 19:53:38,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:38,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 19:53:38,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-10-11 19:53:38,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:38,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 113 transitions, 1019 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:38,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:38,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:38,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:40,221 INFO L124 PetriNetUnfolderBase]: 372/751 cut-off events. [2024-10-11 19:53:40,221 INFO L125 PetriNetUnfolderBase]: For 6118/6118 co-relation queries the response was YES. [2024-10-11 19:53:40,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 751 events. 372/751 cut-off events. For 6118/6118 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4095 event pairs, 30 based on Foata normal form. 4/751 useless extension candidates. Maximal degree in co-relation 3851. Up to 323 conditions per place. [2024-10-11 19:53:40,229 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 105 selfloop transitions, 94 changer transitions 18/218 dead transitions. [2024-10-11 19:53:40,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 218 transitions, 2311 flow [2024-10-11 19:53:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 19:53:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-11 19:53:40,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 270 transitions. [2024-10-11 19:53:40,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-11 19:53:40,232 INFO L175 Difference]: Start difference. First operand has 102 places, 113 transitions, 1019 flow. Second operand 30 states and 270 transitions. [2024-10-11 19:53:40,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 218 transitions, 2311 flow [2024-10-11 19:53:40,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 218 transitions, 2072 flow, removed 98 selfloop flow, removed 11 redundant places. [2024-10-11 19:53:40,256 INFO L231 Difference]: Finished difference. Result has 132 places, 144 transitions, 1578 flow [2024-10-11 19:53:40,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1578, PETRI_PLACES=132, PETRI_TRANSITIONS=144} [2024-10-11 19:53:40,257 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 110 predicate places. [2024-10-11 19:53:40,257 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 144 transitions, 1578 flow [2024-10-11 19:53:40,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:40,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:40,258 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:40,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 19:53:40,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:40,462 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:40,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:40,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1533874027, now seen corresponding path program 3 times [2024-10-11 19:53:40,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:40,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428577688] [2024-10-11 19:53:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:40,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:40,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:40,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428577688] [2024-10-11 19:53:40,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428577688] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:40,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82710215] [2024-10-11 19:53:40,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:53:40,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:40,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:40,947 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:40,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 19:53:41,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 19:53:41,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:41,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:53:41,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:41,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:41,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82710215] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:41,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:41,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-10-11 19:53:41,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071363793] [2024-10-11 19:53:41,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:41,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 19:53:41,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:41,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 19:53:41,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-10-11 19:53:41,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:41,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 144 transitions, 1578 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:41,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:41,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:41,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:42,890 INFO L124 PetriNetUnfolderBase]: 359/702 cut-off events. [2024-10-11 19:53:42,890 INFO L125 PetriNetUnfolderBase]: For 8285/8285 co-relation queries the response was YES. [2024-10-11 19:53:42,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4214 conditions, 702 events. 359/702 cut-off events. For 8285/8285 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3634 event pairs, 33 based on Foata normal form. 4/704 useless extension candidates. Maximal degree in co-relation 4062. Up to 323 conditions per place. [2024-10-11 19:53:42,898 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 93 selfloop transitions, 93 changer transitions 14/201 dead transitions. [2024-10-11 19:53:42,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 201 transitions, 2292 flow [2024-10-11 19:53:42,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 19:53:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-11 19:53:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 226 transitions. [2024-10-11 19:53:42,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.452 [2024-10-11 19:53:42,901 INFO L175 Difference]: Start difference. First operand has 132 places, 144 transitions, 1578 flow. Second operand 25 states and 226 transitions. [2024-10-11 19:53:42,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 201 transitions, 2292 flow [2024-10-11 19:53:42,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 201 transitions, 1950 flow, removed 144 selfloop flow, removed 14 redundant places. [2024-10-11 19:53:42,940 INFO L231 Difference]: Finished difference. Result has 142 places, 147 transitions, 1576 flow [2024-10-11 19:53:42,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1576, PETRI_PLACES=142, PETRI_TRANSITIONS=147} [2024-10-11 19:53:42,941 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 120 predicate places. [2024-10-11 19:53:42,941 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 147 transitions, 1576 flow [2024-10-11 19:53:42,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:42,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:42,941 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:42,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:43,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:43,142 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:43,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:43,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1930971081, now seen corresponding path program 4 times [2024-10-11 19:53:43,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:43,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160557853] [2024-10-11 19:53:43,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:43,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:43,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:43,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160557853] [2024-10-11 19:53:43,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160557853] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:43,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695453944] [2024-10-11 19:53:43,584 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:53:43,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:43,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:43,586 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:43,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 19:53:43,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:53:43,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:43,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:53:43,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:43,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:44,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695453944] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:44,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:44,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-11 19:53:44,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385254783] [2024-10-11 19:53:44,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:44,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:53:44,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:53:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:53:44,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:44,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 147 transitions, 1576 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:44,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:44,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:44,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:45,621 INFO L124 PetriNetUnfolderBase]: 420/806 cut-off events. [2024-10-11 19:53:45,621 INFO L125 PetriNetUnfolderBase]: For 10659/10659 co-relation queries the response was YES. [2024-10-11 19:53:45,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4950 conditions, 806 events. 420/806 cut-off events. For 10659/10659 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4233 event pairs, 65 based on Foata normal form. 3/807 useless extension candidates. Maximal degree in co-relation 4824. Up to 658 conditions per place. [2024-10-11 19:53:45,629 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 158 selfloop transitions, 46 changer transitions 15/220 dead transitions. [2024-10-11 19:53:45,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 220 transitions, 2693 flow [2024-10-11 19:53:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 19:53:45,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 19:53:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 164 transitions. [2024-10-11 19:53:45,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-10-11 19:53:45,631 INFO L175 Difference]: Start difference. First operand has 142 places, 147 transitions, 1576 flow. Second operand 18 states and 164 transitions. [2024-10-11 19:53:45,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 220 transitions, 2693 flow [2024-10-11 19:53:45,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 220 transitions, 2251 flow, removed 134 selfloop flow, removed 26 redundant places. [2024-10-11 19:53:45,668 INFO L231 Difference]: Finished difference. Result has 137 places, 178 transitions, 1814 flow [2024-10-11 19:53:45,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1814, PETRI_PLACES=137, PETRI_TRANSITIONS=178} [2024-10-11 19:53:45,669 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 115 predicate places. [2024-10-11 19:53:45,669 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 178 transitions, 1814 flow [2024-10-11 19:53:45,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:45,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:45,670 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:45,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 19:53:45,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 19:53:45,871 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:45,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:45,871 INFO L85 PathProgramCache]: Analyzing trace with hash -498701196, now seen corresponding path program 4 times [2024-10-11 19:53:45,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:45,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105486979] [2024-10-11 19:53:45,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:45,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:46,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:46,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105486979] [2024-10-11 19:53:46,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105486979] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:46,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564506440] [2024-10-11 19:53:46,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:53:46,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:46,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:46,091 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:46,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 19:53:46,149 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:53:46,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:46,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:53:46,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:46,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:46,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:46,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564506440] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:46,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:46,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2024-10-11 19:53:46,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809388316] [2024-10-11 19:53:46,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:46,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 19:53:46,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:46,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 19:53:46,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-10-11 19:53:46,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:46,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 178 transitions, 1814 flow. Second operand has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 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) [2024-10-11 19:53:46,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:46,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:46,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:46,831 INFO L124 PetriNetUnfolderBase]: 412/794 cut-off events. [2024-10-11 19:53:46,832 INFO L125 PetriNetUnfolderBase]: For 4118/4118 co-relation queries the response was YES. [2024-10-11 19:53:46,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4398 conditions, 794 events. 412/794 cut-off events. For 4118/4118 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4179 event pairs, 64 based on Foata normal form. 4/796 useless extension candidates. Maximal degree in co-relation 4307. Up to 660 conditions per place. [2024-10-11 19:53:46,840 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 157 selfloop transitions, 30 changer transitions 25/213 dead transitions. [2024-10-11 19:53:46,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 213 transitions, 2423 flow [2024-10-11 19:53:46,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 19:53:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 19:53:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 122 transitions. [2024-10-11 19:53:46,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-10-11 19:53:46,842 INFO L175 Difference]: Start difference. First operand has 137 places, 178 transitions, 1814 flow. Second operand 13 states and 122 transitions. [2024-10-11 19:53:46,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 213 transitions, 2423 flow [2024-10-11 19:53:46,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 213 transitions, 2319 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-10-11 19:53:46,868 INFO L231 Difference]: Finished difference. Result has 147 places, 174 transitions, 1737 flow [2024-10-11 19:53:46,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1737, PETRI_PLACES=147, PETRI_TRANSITIONS=174} [2024-10-11 19:53:46,871 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 125 predicate places. [2024-10-11 19:53:46,871 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 174 transitions, 1737 flow [2024-10-11 19:53:46,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 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) [2024-10-11 19:53:46,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:46,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:46,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 19:53:47,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 19:53:47,077 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:47,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:47,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1211114799, now seen corresponding path program 5 times [2024-10-11 19:53:47,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:47,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928885509] [2024-10-11 19:53:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:47,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:47,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:47,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928885509] [2024-10-11 19:53:47,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928885509] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:47,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294701165] [2024-10-11 19:53:47,480 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 19:53:47,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:47,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:47,483 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:47,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 19:53:47,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 19:53:47,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:47,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:53:47,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:47,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:48,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294701165] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:48,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:48,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-11 19:53:48,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319004091] [2024-10-11 19:53:48,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:48,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:53:48,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:48,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:53:48,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:53:48,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:48,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 174 transitions, 1737 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:53:48,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:48,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:48,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:49,124 INFO L124 PetriNetUnfolderBase]: 452/864 cut-off events. [2024-10-11 19:53:49,125 INFO L125 PetriNetUnfolderBase]: For 5236/5236 co-relation queries the response was YES. [2024-10-11 19:53:49,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4931 conditions, 864 events. 452/864 cut-off events. For 5236/5236 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4616 event pairs, 60 based on Foata normal form. 3/865 useless extension candidates. Maximal degree in co-relation 4803. Up to 693 conditions per place. [2024-10-11 19:53:49,133 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 167 selfloop transitions, 55 changer transitions 9/232 dead transitions. [2024-10-11 19:53:49,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 232 transitions, 2693 flow [2024-10-11 19:53:49,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 19:53:49,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 19:53:49,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 166 transitions. [2024-10-11 19:53:49,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.415 [2024-10-11 19:53:49,134 INFO L175 Difference]: Start difference. First operand has 147 places, 174 transitions, 1737 flow. Second operand 20 states and 166 transitions. [2024-10-11 19:53:49,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 232 transitions, 2693 flow [2024-10-11 19:53:49,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 232 transitions, 2588 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-10-11 19:53:49,162 INFO L231 Difference]: Finished difference. Result has 157 places, 198 transitions, 2153 flow [2024-10-11 19:53:49,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2153, PETRI_PLACES=157, PETRI_TRANSITIONS=198} [2024-10-11 19:53:49,163 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 135 predicate places. [2024-10-11 19:53:49,164 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 198 transitions, 2153 flow [2024-10-11 19:53:49,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:53:49,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:49,164 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:49,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:49,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 19:53:49,365 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:49,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:49,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2134621864, now seen corresponding path program 4 times [2024-10-11 19:53:49,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:49,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693961459] [2024-10-11 19:53:49,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:49,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:49,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693961459] [2024-10-11 19:53:49,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693961459] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:49,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067725280] [2024-10-11 19:53:49,511 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:53:49,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:49,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:49,513 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:49,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 19:53:49,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:53:49,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:49,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 19:53:49,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:49,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:53,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067725280] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:53,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:53,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 17 [2024-10-11 19:53:53,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935705569] [2024-10-11 19:53:53,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:53,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:53:53,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:53,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:53:53,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=226, Unknown=1, NotChecked=0, Total=306 [2024-10-11 19:53:53,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:53,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 198 transitions, 2153 flow. Second operand has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:53,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:53,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:53,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:54,448 INFO L124 PetriNetUnfolderBase]: 448/849 cut-off events. [2024-10-11 19:53:54,448 INFO L125 PetriNetUnfolderBase]: For 6080/6080 co-relation queries the response was YES. [2024-10-11 19:53:54,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5129 conditions, 849 events. 448/849 cut-off events. For 6080/6080 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4454 event pairs, 60 based on Foata normal form. 2/849 useless extension candidates. Maximal degree in co-relation 5027. Up to 741 conditions per place. [2024-10-11 19:53:54,459 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 179 selfloop transitions, 38 changer transitions 6/224 dead transitions. [2024-10-11 19:53:54,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 224 transitions, 2702 flow [2024-10-11 19:53:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 19:53:54,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 19:53:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 132 transitions. [2024-10-11 19:53:54,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-10-11 19:53:54,460 INFO L175 Difference]: Start difference. First operand has 157 places, 198 transitions, 2153 flow. Second operand 15 states and 132 transitions. [2024-10-11 19:53:54,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 224 transitions, 2702 flow [2024-10-11 19:53:54,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 224 transitions, 2529 flow, removed 69 selfloop flow, removed 10 redundant places. [2024-10-11 19:53:54,498 INFO L231 Difference]: Finished difference. Result has 161 places, 198 transitions, 2080 flow [2024-10-11 19:53:54,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2080, PETRI_PLACES=161, PETRI_TRANSITIONS=198} [2024-10-11 19:53:54,499 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 139 predicate places. [2024-10-11 19:53:54,499 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 198 transitions, 2080 flow [2024-10-11 19:53:54,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:54,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:54,499 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:54,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 19:53:54,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:54,704 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:54,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash 434762513, now seen corresponding path program 6 times [2024-10-11 19:53:54,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:54,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025193677] [2024-10-11 19:53:54,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:54,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:55,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:55,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:55,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025193677] [2024-10-11 19:53:55,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025193677] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:55,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885756325] [2024-10-11 19:53:55,100 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 19:53:55,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:55,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:55,103 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:55,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 19:53:55,160 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-11 19:53:55,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:55,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:53:55,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:55,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:56,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885756325] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:56,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:56,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-11 19:53:56,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431516834] [2024-10-11 19:53:56,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:56,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:53:56,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:56,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:53:56,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:53:56,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:56,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 198 transitions, 2080 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:53:56,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:56,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:56,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:56,722 INFO L124 PetriNetUnfolderBase]: 453/866 cut-off events. [2024-10-11 19:53:56,722 INFO L125 PetriNetUnfolderBase]: For 5920/5920 co-relation queries the response was YES. [2024-10-11 19:53:56,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5132 conditions, 866 events. 453/866 cut-off events. For 5920/5920 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4627 event pairs, 59 based on Foata normal form. 3/867 useless extension candidates. Maximal degree in co-relation 5035. Up to 765 conditions per place. [2024-10-11 19:53:56,733 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 180 selfloop transitions, 43 changer transitions 7/231 dead transitions. [2024-10-11 19:53:56,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 231 transitions, 2723 flow [2024-10-11 19:53:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 19:53:56,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 19:53:56,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 150 transitions. [2024-10-11 19:53:56,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-10-11 19:53:56,736 INFO L175 Difference]: Start difference. First operand has 161 places, 198 transitions, 2080 flow. Second operand 18 states and 150 transitions. [2024-10-11 19:53:56,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 231 transitions, 2723 flow [2024-10-11 19:53:56,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 231 transitions, 2612 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-10-11 19:53:56,772 INFO L231 Difference]: Finished difference. Result has 170 places, 204 transitions, 2181 flow [2024-10-11 19:53:56,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2181, PETRI_PLACES=170, PETRI_TRANSITIONS=204} [2024-10-11 19:53:56,773 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 148 predicate places. [2024-10-11 19:53:56,773 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 204 transitions, 2181 flow [2024-10-11 19:53:56,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:53:56,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:56,774 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:56,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:56,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 19:53:56,974 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:56,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:56,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1294231689, now seen corresponding path program 7 times [2024-10-11 19:53:56,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:56,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726354506] [2024-10-11 19:53:56,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:56,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:57,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:57,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:53:57,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726354506] [2024-10-11 19:53:57,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726354506] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:53:57,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317399519] [2024-10-11 19:53:57,374 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 19:53:57,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:53:57,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:57,376 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:53:57,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 19:53:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:57,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:53:57,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:57,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:58,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317399519] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:58,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:53:58,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-11 19:53:58,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636100992] [2024-10-11 19:53:58,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:58,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:53:58,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:53:58,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:53:58,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:53:58,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:53:58,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 204 transitions, 2181 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:53:58,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:58,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:53:58,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:59,396 INFO L124 PetriNetUnfolderBase]: 451/860 cut-off events. [2024-10-11 19:53:59,397 INFO L125 PetriNetUnfolderBase]: For 6131/6131 co-relation queries the response was YES. [2024-10-11 19:53:59,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5170 conditions, 860 events. 451/860 cut-off events. For 6131/6131 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4564 event pairs, 63 based on Foata normal form. 3/861 useless extension candidates. Maximal degree in co-relation 5106. Up to 700 conditions per place. [2024-10-11 19:53:59,406 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 174 selfloop transitions, 61 changer transitions 8/244 dead transitions. [2024-10-11 19:53:59,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 244 transitions, 2895 flow [2024-10-11 19:53:59,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 19:53:59,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 19:53:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 190 transitions. [2024-10-11 19:53:59,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41304347826086957 [2024-10-11 19:53:59,408 INFO L175 Difference]: Start difference. First operand has 170 places, 204 transitions, 2181 flow. Second operand 23 states and 190 transitions. [2024-10-11 19:53:59,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 244 transitions, 2895 flow [2024-10-11 19:53:59,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 244 transitions, 2801 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-10-11 19:53:59,454 INFO L231 Difference]: Finished difference. Result has 185 places, 208 transitions, 2321 flow [2024-10-11 19:53:59,455 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2321, PETRI_PLACES=185, PETRI_TRANSITIONS=208} [2024-10-11 19:53:59,455 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 163 predicate places. [2024-10-11 19:53:59,456 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 208 transitions, 2321 flow [2024-10-11 19:53:59,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:53:59,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:59,456 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:59,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:59,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 19:53:59,661 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:53:59,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:59,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1354805163, now seen corresponding path program 8 times [2024-10-11 19:53:59,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:53:59,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129072600] [2024-10-11 19:53:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:59,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:53:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:00,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:00,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:00,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129072600] [2024-10-11 19:54:00,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129072600] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:00,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115488239] [2024-10-11 19:54:00,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:54:00,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:00,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:00,032 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:00,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 19:54:00,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:54:00,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:00,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:54:00,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:00,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:00,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:03,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115488239] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:03,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:03,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-11 19:54:03,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137227979] [2024-10-11 19:54:03,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:03,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:54:03,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:03,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:54:03,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:54:03,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:54:03,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 208 transitions, 2321 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:54:03,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:03,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:54:03,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:03,829 INFO L124 PetriNetUnfolderBase]: 500/958 cut-off events. [2024-10-11 19:54:03,830 INFO L125 PetriNetUnfolderBase]: For 9272/9272 co-relation queries the response was YES. [2024-10-11 19:54:03,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6183 conditions, 958 events. 500/958 cut-off events. For 9272/9272 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5227 event pairs, 57 based on Foata normal form. 3/959 useless extension candidates. Maximal degree in co-relation 6117. Up to 751 conditions per place. [2024-10-11 19:54:03,840 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 191 selfloop transitions, 66 changer transitions 8/266 dead transitions. [2024-10-11 19:54:03,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 266 transitions, 3496 flow [2024-10-11 19:54:03,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 19:54:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 19:54:03,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 167 transitions. [2024-10-11 19:54:03,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-10-11 19:54:03,842 INFO L175 Difference]: Start difference. First operand has 185 places, 208 transitions, 2321 flow. Second operand 19 states and 167 transitions. [2024-10-11 19:54:03,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 266 transitions, 3496 flow [2024-10-11 19:54:03,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 266 transitions, 3257 flow, removed 73 selfloop flow, removed 23 redundant places. [2024-10-11 19:54:03,913 INFO L231 Difference]: Finished difference. Result has 187 places, 229 transitions, 2703 flow [2024-10-11 19:54:03,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2703, PETRI_PLACES=187, PETRI_TRANSITIONS=229} [2024-10-11 19:54:03,914 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 165 predicate places. [2024-10-11 19:54:03,914 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 229 transitions, 2703 flow [2024-10-11 19:54:03,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:54:03,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:03,915 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:03,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-11 19:54:04,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 19:54:04,119 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:04,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:04,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1271688273, now seen corresponding path program 9 times [2024-10-11 19:54:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:04,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934696938] [2024-10-11 19:54:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:04,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:04,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:04,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934696938] [2024-10-11 19:54:04,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934696938] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:04,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529189967] [2024-10-11 19:54:04,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:54:04,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:04,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:04,490 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:04,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 19:54:04,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 19:54:04,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:04,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:54:04,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:04,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:04,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:05,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529189967] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:05,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:05,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-11 19:54:05,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573852054] [2024-10-11 19:54:05,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:05,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:54:05,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:05,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:54:05,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:54:05,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:54:05,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 229 transitions, 2703 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:54:05,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:05,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:54:05,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:06,183 INFO L124 PetriNetUnfolderBase]: 491/931 cut-off events. [2024-10-11 19:54:06,184 INFO L125 PetriNetUnfolderBase]: For 8667/8667 co-relation queries the response was YES. [2024-10-11 19:54:06,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6048 conditions, 931 events. 491/931 cut-off events. For 8667/8667 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5010 event pairs, 57 based on Foata normal form. 3/932 useless extension candidates. Maximal degree in co-relation 5927. Up to 751 conditions per place. [2024-10-11 19:54:06,192 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 183 selfloop transitions, 65 changer transitions 8/257 dead transitions. [2024-10-11 19:54:06,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 257 transitions, 3360 flow [2024-10-11 19:54:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 19:54:06,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 19:54:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 145 transitions. [2024-10-11 19:54:06,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4264705882352941 [2024-10-11 19:54:06,194 INFO L175 Difference]: Start difference. First operand has 187 places, 229 transitions, 2703 flow. Second operand 17 states and 145 transitions. [2024-10-11 19:54:06,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 257 transitions, 3360 flow [2024-10-11 19:54:06,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 257 transitions, 3030 flow, removed 144 selfloop flow, removed 9 redundant places. [2024-10-11 19:54:06,239 INFO L231 Difference]: Finished difference. Result has 195 places, 230 transitions, 2608 flow [2024-10-11 19:54:06,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2376, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2608, PETRI_PLACES=195, PETRI_TRANSITIONS=230} [2024-10-11 19:54:06,240 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 173 predicate places. [2024-10-11 19:54:06,241 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 230 transitions, 2608 flow [2024-10-11 19:54:06,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:54:06,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:06,241 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:06,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-11 19:54:06,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 19:54:06,442 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:06,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:06,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1393115503, now seen corresponding path program 10 times [2024-10-11 19:54:06,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:06,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585169822] [2024-10-11 19:54:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:06,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:06,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:06,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585169822] [2024-10-11 19:54:06,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585169822] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:06,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36105773] [2024-10-11 19:54:06,721 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:54:06,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:06,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:06,723 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:06,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 19:54:06,782 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:54:06,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:06,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:54:06,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:06,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:07,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:07,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36105773] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:07,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:07,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-11 19:54:07,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464816846] [2024-10-11 19:54:07,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:07,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:54:07,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:07,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:54:07,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:54:07,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:54:07,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 230 transitions, 2608 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:07,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:07,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:54:07,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:08,307 INFO L124 PetriNetUnfolderBase]: 500/949 cut-off events. [2024-10-11 19:54:08,307 INFO L125 PetriNetUnfolderBase]: For 9536/9536 co-relation queries the response was YES. [2024-10-11 19:54:08,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6147 conditions, 949 events. 500/949 cut-off events. For 9536/9536 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5124 event pairs, 63 based on Foata normal form. 3/950 useless extension candidates. Maximal degree in co-relation 6036. Up to 834 conditions per place. [2024-10-11 19:54:08,317 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 209 selfloop transitions, 42 changer transitions 8/260 dead transitions. [2024-10-11 19:54:08,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 260 transitions, 3365 flow [2024-10-11 19:54:08,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 19:54:08,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 19:54:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 129 transitions. [2024-10-11 19:54:08,319 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-10-11 19:54:08,319 INFO L175 Difference]: Start difference. First operand has 195 places, 230 transitions, 2608 flow. Second operand 15 states and 129 transitions. [2024-10-11 19:54:08,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 260 transitions, 3365 flow [2024-10-11 19:54:08,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 260 transitions, 3167 flow, removed 59 selfloop flow, removed 12 redundant places. [2024-10-11 19:54:08,415 INFO L231 Difference]: Finished difference. Result has 198 places, 233 transitions, 2631 flow [2024-10-11 19:54:08,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2631, PETRI_PLACES=198, PETRI_TRANSITIONS=233} [2024-10-11 19:54:08,415 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 176 predicate places. [2024-10-11 19:54:08,416 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 233 transitions, 2631 flow [2024-10-11 19:54:08,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:08,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:08,416 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:08,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-11 19:54:08,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:08,621 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:08,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:08,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1748970377, now seen corresponding path program 11 times [2024-10-11 19:54:08,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:08,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101032037] [2024-10-11 19:54:08,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:08,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:08,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:08,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101032037] [2024-10-11 19:54:08,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101032037] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:08,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250974089] [2024-10-11 19:54:08,991 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 19:54:08,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:08,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:08,992 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:08,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-11 19:54:09,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 19:54:09,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:09,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:54:09,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:09,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:10,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250974089] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:10,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:10,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-11 19:54:10,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541604180] [2024-10-11 19:54:10,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:10,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:54:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:10,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:54:10,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:54:10,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:54:10,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 233 transitions, 2631 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:54:10,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:10,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:54:10,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:10,741 INFO L124 PetriNetUnfolderBase]: 541/1025 cut-off events. [2024-10-11 19:54:10,742 INFO L125 PetriNetUnfolderBase]: For 11936/11936 co-relation queries the response was YES. [2024-10-11 19:54:10,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6801 conditions, 1025 events. 541/1025 cut-off events. For 11936/11936 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5638 event pairs, 61 based on Foata normal form. 3/1026 useless extension candidates. Maximal degree in co-relation 6728. Up to 852 conditions per place. [2024-10-11 19:54:10,750 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 211 selfloop transitions, 57 changer transitions 9/278 dead transitions. [2024-10-11 19:54:10,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 278 transitions, 3750 flow [2024-10-11 19:54:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 19:54:10,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 19:54:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 143 transitions. [2024-10-11 19:54:10,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42058823529411765 [2024-10-11 19:54:10,752 INFO L175 Difference]: Start difference. First operand has 198 places, 233 transitions, 2631 flow. Second operand 17 states and 143 transitions. [2024-10-11 19:54:10,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 278 transitions, 3750 flow [2024-10-11 19:54:10,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 278 transitions, 3613 flow, removed 26 selfloop flow, removed 14 redundant places. [2024-10-11 19:54:10,793 INFO L231 Difference]: Finished difference. Result has 206 places, 249 transitions, 3019 flow [2024-10-11 19:54:10,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3019, PETRI_PLACES=206, PETRI_TRANSITIONS=249} [2024-10-11 19:54:10,793 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 184 predicate places. [2024-10-11 19:54:10,794 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 249 transitions, 3019 flow [2024-10-11 19:54:10,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:54:10,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:10,794 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:10,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-11 19:54:10,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:10,995 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:10,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:10,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1832087267, now seen corresponding path program 12 times [2024-10-11 19:54:10,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:10,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242901649] [2024-10-11 19:54:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:10,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:11,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:11,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242901649] [2024-10-11 19:54:11,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242901649] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:11,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825298686] [2024-10-11 19:54:11,285 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 19:54:11,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:11,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:11,286 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:11,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-11 19:54:11,325 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-11 19:54:11,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:11,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:54:11,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:11,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:12,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:12,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825298686] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:12,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:12,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-11 19:54:12,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135394073] [2024-10-11 19:54:12,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:12,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:54:12,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:12,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:54:12,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:54:12,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:54:12,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 249 transitions, 3019 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:54:12,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:12,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:54:12,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:12,951 INFO L124 PetriNetUnfolderBase]: 538/1016 cut-off events. [2024-10-11 19:54:12,952 INFO L125 PetriNetUnfolderBase]: For 12715/12715 co-relation queries the response was YES. [2024-10-11 19:54:12,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6953 conditions, 1016 events. 538/1016 cut-off events. For 12715/12715 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5564 event pairs, 61 based on Foata normal form. 3/1017 useless extension candidates. Maximal degree in co-relation 6830. Up to 854 conditions per place. [2024-10-11 19:54:12,959 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 214 selfloop transitions, 61 changer transitions 7/283 dead transitions. [2024-10-11 19:54:12,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 283 transitions, 3914 flow [2024-10-11 19:54:12,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 19:54:12,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 19:54:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 154 transitions. [2024-10-11 19:54:12,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-10-11 19:54:12,960 INFO L175 Difference]: Start difference. First operand has 206 places, 249 transitions, 3019 flow. Second operand 18 states and 154 transitions. [2024-10-11 19:54:12,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 283 transitions, 3914 flow [2024-10-11 19:54:13,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 283 transitions, 3608 flow, removed 131 selfloop flow, removed 11 redundant places. [2024-10-11 19:54:13,009 INFO L231 Difference]: Finished difference. Result has 213 places, 255 transitions, 3072 flow [2024-10-11 19:54:13,009 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2775, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3072, PETRI_PLACES=213, PETRI_TRANSITIONS=255} [2024-10-11 19:54:13,009 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 191 predicate places. [2024-10-11 19:54:13,009 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 255 transitions, 3072 flow [2024-10-11 19:54:13,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:54:13,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:13,010 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:13,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-11 19:54:13,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:13,210 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:13,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:13,211 INFO L85 PathProgramCache]: Analyzing trace with hash -733832695, now seen corresponding path program 13 times [2024-10-11 19:54:13,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:13,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847445430] [2024-10-11 19:54:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:13,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:13,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:13,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:13,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847445430] [2024-10-11 19:54:13,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847445430] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:13,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436795237] [2024-10-11 19:54:13,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 19:54:13,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:13,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:13,552 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:13,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-11 19:54:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:13,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:54:13,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:13,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:18,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:18,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436795237] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:18,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:18,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-11 19:54:18,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802066095] [2024-10-11 19:54:18,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:18,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:54:18,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:18,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:54:18,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:54:18,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:54:18,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 255 transitions, 3072 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:54:18,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:18,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:54:18,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:19,306 INFO L124 PetriNetUnfolderBase]: 575/1089 cut-off events. [2024-10-11 19:54:19,306 INFO L125 PetriNetUnfolderBase]: For 17064/17064 co-relation queries the response was YES. [2024-10-11 19:54:19,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7630 conditions, 1089 events. 575/1089 cut-off events. For 17064/17064 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6097 event pairs, 63 based on Foata normal form. 3/1090 useless extension candidates. Maximal degree in co-relation 7551. Up to 909 conditions per place. [2024-10-11 19:54:19,314 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 233 selfloop transitions, 59 changer transitions 8/301 dead transitions. [2024-10-11 19:54:19,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 301 transitions, 4163 flow [2024-10-11 19:54:19,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 19:54:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 19:54:19,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 172 transitions. [2024-10-11 19:54:19,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-10-11 19:54:19,316 INFO L175 Difference]: Start difference. First operand has 213 places, 255 transitions, 3072 flow. Second operand 21 states and 172 transitions. [2024-10-11 19:54:19,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 301 transitions, 4163 flow [2024-10-11 19:54:19,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 301 transitions, 3908 flow, removed 90 selfloop flow, removed 15 redundant places. [2024-10-11 19:54:19,394 INFO L231 Difference]: Finished difference. Result has 223 places, 268 transitions, 3334 flow [2024-10-11 19:54:19,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2825, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3334, PETRI_PLACES=223, PETRI_TRANSITIONS=268} [2024-10-11 19:54:19,395 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 201 predicate places. [2024-10-11 19:54:19,395 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 268 transitions, 3334 flow [2024-10-11 19:54:19,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:54:19,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:19,396 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:19,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-11 19:54:19,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-11 19:54:19,597 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:19,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:19,597 INFO L85 PathProgramCache]: Analyzing trace with hash -812480935, now seen corresponding path program 14 times [2024-10-11 19:54:19,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:19,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631827755] [2024-10-11 19:54:19,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:19,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:19,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:19,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631827755] [2024-10-11 19:54:19,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631827755] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:19,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385518362] [2024-10-11 19:54:19,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:54:19,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:19,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:19,973 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:19,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-11 19:54:20,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:54:20,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:20,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:54:20,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:20,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:20,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385518362] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:20,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:20,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-11 19:54:20,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355672583] [2024-10-11 19:54:20,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:20,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:54:20,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:20,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:54:20,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:54:20,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:54:20,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 268 transitions, 3334 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:20,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:20,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:54:20,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:21,653 INFO L124 PetriNetUnfolderBase]: 575/1086 cut-off events. [2024-10-11 19:54:21,654 INFO L125 PetriNetUnfolderBase]: For 16194/16194 co-relation queries the response was YES. [2024-10-11 19:54:21,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7672 conditions, 1086 events. 575/1086 cut-off events. For 16194/16194 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6025 event pairs, 64 based on Foata normal form. 3/1087 useless extension candidates. Maximal degree in co-relation 7546. Up to 912 conditions per place. [2024-10-11 19:54:21,665 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 238 selfloop transitions, 61 changer transitions 8/308 dead transitions. [2024-10-11 19:54:21,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 308 transitions, 4254 flow [2024-10-11 19:54:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:54:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:54:21,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 186 transitions. [2024-10-11 19:54:21,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-10-11 19:54:21,667 INFO L175 Difference]: Start difference. First operand has 223 places, 268 transitions, 3334 flow. Second operand 22 states and 186 transitions. [2024-10-11 19:54:21,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 308 transitions, 4254 flow [2024-10-11 19:54:21,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 308 transitions, 3990 flow, removed 102 selfloop flow, removed 16 redundant places. [2024-10-11 19:54:21,756 INFO L231 Difference]: Finished difference. Result has 229 places, 272 transitions, 3377 flow [2024-10-11 19:54:21,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3128, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3377, PETRI_PLACES=229, PETRI_TRANSITIONS=272} [2024-10-11 19:54:21,757 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 207 predicate places. [2024-10-11 19:54:21,757 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 272 transitions, 3377 flow [2024-10-11 19:54:21,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:21,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:21,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:21,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-11 19:54:21,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:21,958 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:21,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:21,959 INFO L85 PathProgramCache]: Analyzing trace with hash -361973239, now seen corresponding path program 15 times [2024-10-11 19:54:21,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:21,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290810693] [2024-10-11 19:54:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:21,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:22,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:22,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290810693] [2024-10-11 19:54:22,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290810693] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:22,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855378578] [2024-10-11 19:54:22,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:54:22,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:22,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:22,277 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:22,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-11 19:54:22,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 19:54:22,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:22,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:54:22,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:22,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:22,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:22,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855378578] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:22,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:22,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-11 19:54:22,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79492956] [2024-10-11 19:54:22,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:22,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:54:22,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:22,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:54:22,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:54:22,917 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:54:22,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 272 transitions, 3377 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:22,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:22,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:54:22,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:27,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 19:54:27,789 INFO L124 PetriNetUnfolderBase]: 605/1161 cut-off events. [2024-10-11 19:54:27,790 INFO L125 PetriNetUnfolderBase]: For 15380/15380 co-relation queries the response was YES. [2024-10-11 19:54:27,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7995 conditions, 1161 events. 605/1161 cut-off events. For 15380/15380 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6668 event pairs, 66 based on Foata normal form. 4/1163 useless extension candidates. Maximal degree in co-relation 7912. Up to 949 conditions per place. [2024-10-11 19:54:27,801 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 254 selfloop transitions, 71 changer transitions 16/342 dead transitions. [2024-10-11 19:54:27,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 342 transitions, 4733 flow [2024-10-11 19:54:27,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 19:54:27,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 19:54:27,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 197 transitions. [2024-10-11 19:54:27,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4282608695652174 [2024-10-11 19:54:27,803 INFO L175 Difference]: Start difference. First operand has 229 places, 272 transitions, 3377 flow. Second operand 23 states and 197 transitions. [2024-10-11 19:54:27,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 342 transitions, 4733 flow [2024-10-11 19:54:27,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 342 transitions, 4475 flow, removed 91 selfloop flow, removed 19 redundant places. [2024-10-11 19:54:27,932 INFO L231 Difference]: Finished difference. Result has 242 places, 293 transitions, 3677 flow [2024-10-11 19:54:27,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3677, PETRI_PLACES=242, PETRI_TRANSITIONS=293} [2024-10-11 19:54:27,932 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 220 predicate places. [2024-10-11 19:54:27,933 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 293 transitions, 3677 flow [2024-10-11 19:54:27,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:27,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:27,933 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:27,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-11 19:54:28,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:28,134 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:28,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:28,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1990266970, now seen corresponding path program 5 times [2024-10-11 19:54:28,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:28,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228866063] [2024-10-11 19:54:28,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:28,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:28,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:28,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228866063] [2024-10-11 19:54:28,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228866063] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:28,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211837017] [2024-10-11 19:54:28,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 19:54:28,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:28,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:28,318 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:28,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-11 19:54:28,362 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:54:28,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:28,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 19:54:28,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:28,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:28,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211837017] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:28,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:28,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 18 [2024-10-11 19:54:28,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539769593] [2024-10-11 19:54:28,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:28,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 19:54:28,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:28,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 19:54:28,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2024-10-11 19:54:28,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:54:28,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 293 transitions, 3677 flow. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:28,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:28,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:54:28,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:29,524 INFO L124 PetriNetUnfolderBase]: 740/1416 cut-off events. [2024-10-11 19:54:29,524 INFO L125 PetriNetUnfolderBase]: For 30578/30578 co-relation queries the response was YES. [2024-10-11 19:54:29,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10687 conditions, 1416 events. 740/1416 cut-off events. For 30578/30578 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8521 event pairs, 63 based on Foata normal form. 5/1421 useless extension candidates. Maximal degree in co-relation 10505. Up to 593 conditions per place. [2024-10-11 19:54:29,540 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 230 selfloop transitions, 180 changer transitions 13/424 dead transitions. [2024-10-11 19:54:29,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 424 transitions, 6219 flow [2024-10-11 19:54:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 19:54:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-11 19:54:29,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 246 transitions. [2024-10-11 19:54:29,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-10-11 19:54:29,542 INFO L175 Difference]: Start difference. First operand has 242 places, 293 transitions, 3677 flow. Second operand 27 states and 246 transitions. [2024-10-11 19:54:29,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 424 transitions, 6219 flow [2024-10-11 19:54:29,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 424 transitions, 5930 flow, removed 121 selfloop flow, removed 11 redundant places. [2024-10-11 19:54:29,706 INFO L231 Difference]: Finished difference. Result has 266 places, 339 transitions, 4895 flow [2024-10-11 19:54:29,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4895, PETRI_PLACES=266, PETRI_TRANSITIONS=339} [2024-10-11 19:54:29,706 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 244 predicate places. [2024-10-11 19:54:29,706 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 339 transitions, 4895 flow [2024-10-11 19:54:29,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:29,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:29,707 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:29,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-10-11 19:54:29,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-11 19:54:29,908 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:29,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:29,908 INFO L85 PathProgramCache]: Analyzing trace with hash 972618091, now seen corresponding path program 16 times [2024-10-11 19:54:29,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:29,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302898738] [2024-10-11 19:54:29,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:29,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:30,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:30,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302898738] [2024-10-11 19:54:30,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302898738] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:30,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880604315] [2024-10-11 19:54:30,258 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:54:30,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:30,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:30,260 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:30,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-11 19:54:30,344 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:54:30,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:30,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:54:30,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:30,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:31,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880604315] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:31,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:31,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-11 19:54:31,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620513917] [2024-10-11 19:54:31,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:31,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:54:31,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:31,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:54:31,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:54:31,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:54:31,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 339 transitions, 4895 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:54:31,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:31,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:54:31,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:32,266 INFO L124 PetriNetUnfolderBase]: 742/1424 cut-off events. [2024-10-11 19:54:32,266 INFO L125 PetriNetUnfolderBase]: For 34373/34373 co-relation queries the response was YES. [2024-10-11 19:54:32,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11481 conditions, 1424 events. 742/1424 cut-off events. For 34373/34373 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8560 event pairs, 104 based on Foata normal form. 3/1427 useless extension candidates. Maximal degree in co-relation 11283. Up to 1322 conditions per place. [2024-10-11 19:54:32,281 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 319 selfloop transitions, 39 changer transitions 7/366 dead transitions. [2024-10-11 19:54:32,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 366 transitions, 5805 flow [2024-10-11 19:54:32,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 19:54:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 19:54:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 132 transitions. [2024-10-11 19:54:32,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-10-11 19:54:32,282 INFO L175 Difference]: Start difference. First operand has 266 places, 339 transitions, 4895 flow. Second operand 16 states and 132 transitions. [2024-10-11 19:54:32,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 366 transitions, 5805 flow [2024-10-11 19:54:32,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 366 transitions, 5397 flow, removed 169 selfloop flow, removed 14 redundant places. [2024-10-11 19:54:32,451 INFO L231 Difference]: Finished difference. Result has 269 places, 342 transitions, 4648 flow [2024-10-11 19:54:32,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4487, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4648, PETRI_PLACES=269, PETRI_TRANSITIONS=342} [2024-10-11 19:54:32,452 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 247 predicate places. [2024-10-11 19:54:32,452 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 342 transitions, 4648 flow [2024-10-11 19:54:32,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-10-11 19:54:32,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:32,452 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:32,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-11 19:54:32,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-11 19:54:32,653 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:32,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:32,653 INFO L85 PathProgramCache]: Analyzing trace with hash 515929963, now seen corresponding path program 17 times [2024-10-11 19:54:32,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:32,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290258361] [2024-10-11 19:54:32,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:32,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:33,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:33,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290258361] [2024-10-11 19:54:33,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290258361] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:33,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729100403] [2024-10-11 19:54:33,074 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 19:54:33,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:33,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:33,076 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:33,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-11 19:54:33,132 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:54:33,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:33,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:54:33,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:33,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:33,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729100403] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:33,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:33,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-10-11 19:54:33,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520926303] [2024-10-11 19:54:33,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:33,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 19:54:33,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:33,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 19:54:33,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-10-11 19:54:33,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:54:33,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 342 transitions, 4648 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:33,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:33,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:54:33,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:34,940 INFO L124 PetriNetUnfolderBase]: 782/1517 cut-off events. [2024-10-11 19:54:34,940 INFO L125 PetriNetUnfolderBase]: For 37429/37429 co-relation queries the response was YES. [2024-10-11 19:54:34,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12114 conditions, 1517 events. 782/1517 cut-off events. For 37429/37429 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9353 event pairs, 95 based on Foata normal form. 4/1521 useless extension candidates. Maximal degree in co-relation 12012. Up to 1217 conditions per place. [2024-10-11 19:54:34,953 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 304 selfloop transitions, 103 changer transitions 11/419 dead transitions. [2024-10-11 19:54:34,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 419 transitions, 6602 flow [2024-10-11 19:54:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 19:54:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-11 19:54:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 239 transitions. [2024-10-11 19:54:34,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4425925925925926 [2024-10-11 19:54:34,955 INFO L175 Difference]: Start difference. First operand has 269 places, 342 transitions, 4648 flow. Second operand 27 states and 239 transitions. [2024-10-11 19:54:34,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 419 transitions, 6602 flow [2024-10-11 19:54:35,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 419 transitions, 6456 flow, removed 40 selfloop flow, removed 13 redundant places. [2024-10-11 19:54:35,127 INFO L231 Difference]: Finished difference. Result has 289 places, 363 transitions, 5476 flow [2024-10-11 19:54:35,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4526, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5476, PETRI_PLACES=289, PETRI_TRANSITIONS=363} [2024-10-11 19:54:35,128 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 267 predicate places. [2024-10-11 19:54:35,128 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 363 transitions, 5476 flow [2024-10-11 19:54:35,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:35,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:35,128 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:35,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-10-11 19:54:35,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-11 19:54:35,329 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:35,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:35,330 INFO L85 PathProgramCache]: Analyzing trace with hash 47257395, now seen corresponding path program 18 times [2024-10-11 19:54:35,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:35,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208597775] [2024-10-11 19:54:35,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:35,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:35,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:35,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208597775] [2024-10-11 19:54:35,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208597775] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:35,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016613799] [2024-10-11 19:54:35,703 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 19:54:35,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:35,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:35,705 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:35,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-11 19:54:35,747 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-11 19:54:35,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:35,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 19:54:35,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:37,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:41,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016613799] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:41,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:41,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2024-10-11 19:54:41,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704598992] [2024-10-11 19:54:41,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:41,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 19:54:41,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:41,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 19:54:41,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=336, Unknown=1, NotChecked=0, Total=420 [2024-10-11 19:54:41,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-11 19:54:41,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 363 transitions, 5476 flow. Second operand has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:41,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:41,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-11 19:54:41,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:45,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []