./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/parallel-misc-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 387afe7095db5eeb3a9188bc3fe181fa803bb62f73944f6d781c5c9340fce39e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:39:33,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:39:33,413 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:39:33,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:39:33,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:39:33,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:39:33,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:39:33,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:39:33,444 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:39:33,444 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:39:33,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:39:33,445 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:39:33,445 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:39:33,447 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:39:33,447 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:39:33,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:39:33,448 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:39:33,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:39:33,448 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:39:33,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:39:33,448 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:39:33,451 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:39:33,451 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:39:33,451 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:39:33,452 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:39:33,452 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:39:33,452 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:39:33,453 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:39:33,453 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:39:33,453 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:39:33,453 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:39:33,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:39:33,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:39:33,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:39:33,454 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:39:33,454 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:39:33,455 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:39:33,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:39:33,455 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:39:33,455 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:39:33,455 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:39:33,456 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:39:33,456 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 387afe7095db5eeb3a9188bc3fe181fa803bb62f73944f6d781c5c9340fce39e [2024-10-13 12:39:33,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:39:33,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:39:33,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:39:33,699 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:39:33,700 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:39:33,700 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-10-13 12:39:34,897 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:39:35,045 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:39:35,046 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-10-13 12:39:35,051 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39b6b3cde/d7604a33210c4e059d4bcfbd7d5acd8f/FLAG5befaf89b [2024-10-13 12:39:35,466 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39b6b3cde/d7604a33210c4e059d4bcfbd7d5acd8f [2024-10-13 12:39:35,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:39:35,469 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:39:35,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:39:35,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:39:35,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:39:35,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:39:35" (1/1) ... [2024-10-13 12:39:35,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ce3242d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35, skipping insertion in model container [2024-10-13 12:39:35,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:39:35" (1/1) ... [2024-10-13 12:39:35,492 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:39:35,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:39:35,667 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:39:35,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:39:35,693 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:39:35,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35 WrapperNode [2024-10-13 12:39:35,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:39:35,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:39:35,694 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:39:35,694 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:39:35,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35" (1/1) ... [2024-10-13 12:39:35,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35" (1/1) ... [2024-10-13 12:39:35,720 INFO L138 Inliner]: procedures = 20, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2024-10-13 12:39:35,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:39:35,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:39:35,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:39:35,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:39:35,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35" (1/1) ... [2024-10-13 12:39:35,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35" (1/1) ... [2024-10-13 12:39:35,730 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35" (1/1) ... [2024-10-13 12:39:35,738 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]. [2024-10-13 12:39:35,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35" (1/1) ... [2024-10-13 12:39:35,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35" (1/1) ... [2024-10-13 12:39:35,742 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35" (1/1) ... [2024-10-13 12:39:35,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35" (1/1) ... [2024-10-13 12:39:35,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35" (1/1) ... [2024-10-13 12:39:35,746 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35" (1/1) ... [2024-10-13 12:39:35,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:39:35,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:39:35,748 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:39:35,748 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:39:35,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35" (1/1) ... [2024-10-13 12:39:35,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:39:35,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:35,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 12:39:35,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 12:39:35,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:39:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:39:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:39:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:39:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:39:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:39:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:39:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:39:35,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:39:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:39:35,820 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:39:35,926 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:39:35,928 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:39:36,105 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:39:36,105 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:39:36,209 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:39:36,209 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 12:39:36,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:39:36 BoogieIcfgContainer [2024-10-13 12:39:36,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:39:36,213 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:39:36,213 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:39:36,215 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:39:36,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:39:35" (1/3) ... [2024-10-13 12:39:36,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1691449c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:39:36, skipping insertion in model container [2024-10-13 12:39:36,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:35" (2/3) ... [2024-10-13 12:39:36,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1691449c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:39:36, skipping insertion in model container [2024-10-13 12:39:36,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:39:36" (3/3) ... [2024-10-13 12:39:36,217 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2024-10-13 12:39:36,230 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:39:36,230 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:39:36,230 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:39:36,259 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 12:39:36,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 74 flow [2024-10-13 12:39:36,307 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-10-13 12:39:36,307 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:39:36,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 4/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-10-13 12:39:36,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 74 flow [2024-10-13 12:39:36,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 66 flow [2024-10-13 12:39:36,327 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:39:36,332 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;@3a063df3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:39:36,332 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 12:39:36,338 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:39:36,338 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-10-13 12:39:36,338 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:39:36,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:36,339 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:36,339 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)] === [2024-10-13 12:39:36,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:36,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1555386887, now seen corresponding path program 1 times [2024-10-13 12:39:36,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:36,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928297238] [2024-10-13 12:39:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:36,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:36,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:36,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928297238] [2024-10-13 12:39:36,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928297238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:36,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:36,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:39:36,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875839685] [2024-10-13 12:39:36,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:36,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:39:36,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:39:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:39:36,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-13 12:39:36,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:36,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:36,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-13 12:39:36,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:36,727 INFO L124 PetriNetUnfolderBase]: 130/252 cut-off events. [2024-10-13 12:39:36,728 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-13 12:39:36,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 252 events. 130/252 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 948 event pairs, 12 based on Foata normal form. 2/218 useless extension candidates. Maximal degree in co-relation 404. Up to 165 conditions per place. [2024-10-13 12:39:36,734 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 21 selfloop transitions, 5 changer transitions 1/36 dead transitions. [2024-10-13 12:39:36,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 36 transitions, 147 flow [2024-10-13 12:39:36,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:39:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:39:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-10-13 12:39:36,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-10-13 12:39:36,745 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 66 flow. Second operand 3 states and 65 transitions. [2024-10-13 12:39:36,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 36 transitions, 147 flow [2024-10-13 12:39:36,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 36 transitions, 133 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:39:36,751 INFO L231 Difference]: Finished difference. Result has 27 places, 29 transitions, 87 flow [2024-10-13 12:39:36,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=27, PETRI_TRANSITIONS=29} [2024-10-13 12:39:36,755 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2024-10-13 12:39:36,755 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 29 transitions, 87 flow [2024-10-13 12:39:36,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:36,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:36,756 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:36,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:39:36,756 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)] === [2024-10-13 12:39:36,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:36,757 INFO L85 PathProgramCache]: Analyzing trace with hash -191551975, now seen corresponding path program 1 times [2024-10-13 12:39:36,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:36,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520672030] [2024-10-13 12:39:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:36,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:36,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:36,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520672030] [2024-10-13 12:39:36,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520672030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:36,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:36,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:39:36,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001373883] [2024-10-13 12:39:36,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:36,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:39:36,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:36,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:39:36,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:39:36,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-13 12:39:36,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 29 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:36,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:36,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-13 12:39:36,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:37,042 INFO L124 PetriNetUnfolderBase]: 173/318 cut-off events. [2024-10-13 12:39:37,043 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-10-13 12:39:37,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 318 events. 173/318 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1303 event pairs, 16 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 342. Up to 129 conditions per place. [2024-10-13 12:39:37,048 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 35 selfloop transitions, 9 changer transitions 3/58 dead transitions. [2024-10-13 12:39:37,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 58 transitions, 254 flow [2024-10-13 12:39:37,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:39:37,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:39:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-10-13 12:39:37,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7066666666666667 [2024-10-13 12:39:37,051 INFO L175 Difference]: Start difference. First operand has 27 places, 29 transitions, 87 flow. Second operand 5 states and 106 transitions. [2024-10-13 12:39:37,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 58 transitions, 254 flow [2024-10-13 12:39:37,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 58 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:39:37,055 INFO L231 Difference]: Finished difference. Result has 33 places, 36 transitions, 139 flow [2024-10-13 12:39:37,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=33, PETRI_TRANSITIONS=36} [2024-10-13 12:39:37,057 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-10-13 12:39:37,057 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 36 transitions, 139 flow [2024-10-13 12:39:37,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:37,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:37,058 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:37,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:39:37,058 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)] === [2024-10-13 12:39:37,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:37,059 INFO L85 PathProgramCache]: Analyzing trace with hash -44134793, now seen corresponding path program 2 times [2024-10-13 12:39:37,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:37,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587984961] [2024-10-13 12:39:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:37,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:37,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:37,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:37,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587984961] [2024-10-13 12:39:37,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587984961] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:37,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:37,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:39:37,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127022125] [2024-10-13 12:39:37,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:37,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:39:37,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:37,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:39:37,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:39:37,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-13 12:39:37,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 36 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:37,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:37,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-13 12:39:37,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:37,333 INFO L124 PetriNetUnfolderBase]: 160/325 cut-off events. [2024-10-13 12:39:37,333 INFO L125 PetriNetUnfolderBase]: For 206/222 co-relation queries the response was YES. [2024-10-13 12:39:37,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 325 events. 160/325 cut-off events. For 206/222 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1408 event pairs, 11 based on Foata normal form. 15/303 useless extension candidates. Maximal degree in co-relation 248. Up to 80 conditions per place. [2024-10-13 12:39:37,337 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 37 selfloop transitions, 12 changer transitions 3/63 dead transitions. [2024-10-13 12:39:37,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 63 transitions, 343 flow [2024-10-13 12:39:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:39:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:39:37,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-10-13 12:39:37,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7066666666666667 [2024-10-13 12:39:37,340 INFO L175 Difference]: Start difference. First operand has 33 places, 36 transitions, 139 flow. Second operand 5 states and 106 transitions. [2024-10-13 12:39:37,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 63 transitions, 343 flow [2024-10-13 12:39:37,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 63 transitions, 343 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:39:37,343 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 225 flow [2024-10-13 12:39:37,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2024-10-13 12:39:37,343 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2024-10-13 12:39:37,344 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 225 flow [2024-10-13 12:39:37,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:37,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:37,344 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:37,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:39:37,344 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)] === [2024-10-13 12:39:37,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:37,345 INFO L85 PathProgramCache]: Analyzing trace with hash 932324787, now seen corresponding path program 1 times [2024-10-13 12:39:37,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:37,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319353317] [2024-10-13 12:39:37,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:37,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:37,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:37,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319353317] [2024-10-13 12:39:37,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319353317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:37,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:37,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:39:37,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713262379] [2024-10-13 12:39:37,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:37,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:39:37,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:37,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:39:37,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:39:37,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-13 12:39:37,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:37,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:37,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-13 12:39:37,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:37,535 INFO L124 PetriNetUnfolderBase]: 159/314 cut-off events. [2024-10-13 12:39:37,536 INFO L125 PetriNetUnfolderBase]: For 596/652 co-relation queries the response was YES. [2024-10-13 12:39:37,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 314 events. 159/314 cut-off events. For 596/652 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1326 event pairs, 15 based on Foata normal form. 10/287 useless extension candidates. Maximal degree in co-relation 327. Up to 145 conditions per place. [2024-10-13 12:39:37,539 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 42 selfloop transitions, 8 changer transitions 4/65 dead transitions. [2024-10-13 12:39:37,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 65 transitions, 435 flow [2024-10-13 12:39:37,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:39:37,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:39:37,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-10-13 12:39:37,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6933333333333334 [2024-10-13 12:39:37,542 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 225 flow. Second operand 5 states and 104 transitions. [2024-10-13 12:39:37,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 65 transitions, 435 flow [2024-10-13 12:39:37,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 431 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-13 12:39:37,547 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 272 flow [2024-10-13 12:39:37,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-10-13 12:39:37,548 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-10-13 12:39:37,548 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 272 flow [2024-10-13 12:39:37,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:37,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:37,548 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:37,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:39:37,549 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)] === [2024-10-13 12:39:37,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:37,549 INFO L85 PathProgramCache]: Analyzing trace with hash -2018817321, now seen corresponding path program 2 times [2024-10-13 12:39:37,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:37,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828948127] [2024-10-13 12:39:37,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:37,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:37,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:37,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828948127] [2024-10-13 12:39:37,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828948127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:37,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:37,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:39:37,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540907690] [2024-10-13 12:39:37,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:37,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:39:37,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:39:37,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:39:37,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-13 12:39:37,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:37,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:37,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-13 12:39:37,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:37,736 INFO L124 PetriNetUnfolderBase]: 148/311 cut-off events. [2024-10-13 12:39:37,736 INFO L125 PetriNetUnfolderBase]: For 651/697 co-relation queries the response was YES. [2024-10-13 12:39:37,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 311 events. 148/311 cut-off events. For 651/697 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1235 event pairs, 11 based on Foata normal form. 18/296 useless extension candidates. Maximal degree in co-relation 722. Up to 80 conditions per place. [2024-10-13 12:39:37,739 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 40 selfloop transitions, 12 changer transitions 2/65 dead transitions. [2024-10-13 12:39:37,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 482 flow [2024-10-13 12:39:37,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:39:37,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:39:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-10-13 12:39:37,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2024-10-13 12:39:37,740 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 272 flow. Second operand 5 states and 101 transitions. [2024-10-13 12:39:37,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 482 flow [2024-10-13 12:39:37,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 65 transitions, 466 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-13 12:39:37,746 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 335 flow [2024-10-13 12:39:37,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-10-13 12:39:37,748 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-10-13 12:39:37,749 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 335 flow [2024-10-13 12:39:37,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:37,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:37,749 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:37,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:39:37,750 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)] === [2024-10-13 12:39:37,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:37,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1422225363, now seen corresponding path program 1 times [2024-10-13 12:39:37,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:37,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80738202] [2024-10-13 12:39:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:37,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:37,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:37,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80738202] [2024-10-13 12:39:37,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80738202] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:37,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521623690] [2024-10-13 12:39:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:37,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:37,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:37,976 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:37,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 12:39:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:38,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:39:38,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:38,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:38,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:38,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521623690] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:38,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:38,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2024-10-13 12:39:38,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099527923] [2024-10-13 12:39:38,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:38,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:39:38,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:38,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:39:38,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:39:38,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-10-13 12:39:38,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 335 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:38,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:38,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-10-13 12:39:38,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:38,650 INFO L124 PetriNetUnfolderBase]: 418/789 cut-off events. [2024-10-13 12:39:38,650 INFO L125 PetriNetUnfolderBase]: For 2152/2152 co-relation queries the response was YES. [2024-10-13 12:39:38,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2945 conditions, 789 events. 418/789 cut-off events. For 2152/2152 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3364 event pairs, 23 based on Foata normal form. 24/752 useless extension candidates. Maximal degree in co-relation 1141. Up to 221 conditions per place. [2024-10-13 12:39:38,656 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 100 selfloop transitions, 24 changer transitions 0/131 dead transitions. [2024-10-13 12:39:38,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 131 transitions, 1146 flow [2024-10-13 12:39:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:39:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:39:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-10-13 12:39:38,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6703703703703704 [2024-10-13 12:39:38,657 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 335 flow. Second operand 9 states and 181 transitions. [2024-10-13 12:39:38,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 131 transitions, 1146 flow [2024-10-13 12:39:38,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 131 transitions, 1107 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-10-13 12:39:38,663 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 526 flow [2024-10-13 12:39:38,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=526, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-10-13 12:39:38,665 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-10-13 12:39:38,665 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 526 flow [2024-10-13 12:39:38,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:38,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:38,666 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:38,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 12:39:38,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 12:39:38,867 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)] === [2024-10-13 12:39:38,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:38,867 INFO L85 PathProgramCache]: Analyzing trace with hash 900567103, now seen corresponding path program 1 times [2024-10-13 12:39:38,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:38,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635250326] [2024-10-13 12:39:38,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:38,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:38,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:38,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635250326] [2024-10-13 12:39:38,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635250326] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:38,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:38,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:39:38,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16351268] [2024-10-13 12:39:38,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:38,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:39:38,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:38,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:39:38,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:39:38,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-13 12:39:38,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:38,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:38,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-13 12:39:38,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:39,121 INFO L124 PetriNetUnfolderBase]: 744/1569 cut-off events. [2024-10-13 12:39:39,122 INFO L125 PetriNetUnfolderBase]: For 5745/5803 co-relation queries the response was YES. [2024-10-13 12:39:39,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6289 conditions, 1569 events. 744/1569 cut-off events. For 5745/5803 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9179 event pairs, 222 based on Foata normal form. 24/1382 useless extension candidates. Maximal degree in co-relation 2814. Up to 380 conditions per place. [2024-10-13 12:39:39,136 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 67 selfloop transitions, 23 changer transitions 0/113 dead transitions. [2024-10-13 12:39:39,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 113 transitions, 1230 flow [2024-10-13 12:39:39,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:39:39,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:39:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-10-13 12:39:39,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2024-10-13 12:39:39,137 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 526 flow. Second operand 4 states and 89 transitions. [2024-10-13 12:39:39,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 113 transitions, 1230 flow [2024-10-13 12:39:39,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 113 transitions, 1204 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-13 12:39:39,147 INFO L231 Difference]: Finished difference. Result has 68 places, 82 transitions, 914 flow [2024-10-13 12:39:39,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=914, PETRI_PLACES=68, PETRI_TRANSITIONS=82} [2024-10-13 12:39:39,148 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-10-13 12:39:39,148 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 82 transitions, 914 flow [2024-10-13 12:39:39,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:39,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:39,149 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:39,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 12:39:39,149 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)] === [2024-10-13 12:39:39,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:39,149 INFO L85 PathProgramCache]: Analyzing trace with hash -276997555, now seen corresponding path program 1 times [2024-10-13 12:39:39,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:39,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134386595] [2024-10-13 12:39:39,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:39,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:47,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:47,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134386595] [2024-10-13 12:39:47,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134386595] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:47,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929707603] [2024-10-13 12:39:47,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:47,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:47,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:47,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:47,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 12:39:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:47,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:39:47,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:47,823 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:48,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929707603] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:48,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:48,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 15 [2024-10-13 12:39:48,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47825229] [2024-10-13 12:39:48,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:48,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 12:39:48,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:48,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 12:39:48,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=192, Unknown=2, NotChecked=0, Total=240 [2024-10-13 12:39:48,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-10-13 12:39:48,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 82 transitions, 914 flow. Second operand has 16 states, 16 states have (on average 13.0) internal successors, (208), 16 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:48,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:48,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-10-13 12:39:48,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:49,065 INFO L124 PetriNetUnfolderBase]: 1863/3600 cut-off events. [2024-10-13 12:39:49,065 INFO L125 PetriNetUnfolderBase]: For 17352/17352 co-relation queries the response was YES. [2024-10-13 12:39:49,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14704 conditions, 3600 events. 1863/3600 cut-off events. For 17352/17352 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 23294 event pairs, 36 based on Foata normal form. 100/3495 useless extension candidates. Maximal degree in co-relation 6413. Up to 937 conditions per place. [2024-10-13 12:39:49,097 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 157 selfloop transitions, 54 changer transitions 0/219 dead transitions. [2024-10-13 12:39:49,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 219 transitions, 2459 flow [2024-10-13 12:39:49,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 12:39:49,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 12:39:49,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 294 transitions. [2024-10-13 12:39:49,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-10-13 12:39:49,102 INFO L175 Difference]: Start difference. First operand has 68 places, 82 transitions, 914 flow. Second operand 16 states and 294 transitions. [2024-10-13 12:39:49,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 219 transitions, 2459 flow [2024-10-13 12:39:49,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 219 transitions, 2459 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:39:49,128 INFO L231 Difference]: Finished difference. Result has 92 places, 116 transitions, 1560 flow [2024-10-13 12:39:49,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1560, PETRI_PLACES=92, PETRI_TRANSITIONS=116} [2024-10-13 12:39:49,129 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-10-13 12:39:49,129 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 116 transitions, 1560 flow [2024-10-13 12:39:49,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.0) internal successors, (208), 16 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:49,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:49,130 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:49,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 12:39:49,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-13 12:39:49,335 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)] === [2024-10-13 12:39:49,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash 801508855, now seen corresponding path program 2 times [2024-10-13 12:39:49,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:49,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374451598] [2024-10-13 12:39:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:49,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:39:49,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:49,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374451598] [2024-10-13 12:39:49,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374451598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:49,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:49,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:39:49,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256944726] [2024-10-13 12:39:49,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:49,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:39:49,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:39:49,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:39:49,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-13 12:39:49,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 116 transitions, 1560 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:49,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:49,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-13 12:39:49,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:50,266 INFO L124 PetriNetUnfolderBase]: 3103/6581 cut-off events. [2024-10-13 12:39:50,266 INFO L125 PetriNetUnfolderBase]: For 48847/48961 co-relation queries the response was YES. [2024-10-13 12:39:50,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30468 conditions, 6581 events. 3103/6581 cut-off events. For 48847/48961 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 53915 event pairs, 901 based on Foata normal form. 4/6067 useless extension candidates. Maximal degree in co-relation 26409. Up to 1981 conditions per place. [2024-10-13 12:39:50,321 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 197 selfloop transitions, 27 changer transitions 0/255 dead transitions. [2024-10-13 12:39:50,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 255 transitions, 4070 flow [2024-10-13 12:39:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:39:50,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:39:50,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-10-13 12:39:50,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-10-13 12:39:50,323 INFO L175 Difference]: Start difference. First operand has 92 places, 116 transitions, 1560 flow. Second operand 4 states and 88 transitions. [2024-10-13 12:39:50,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 255 transitions, 4070 flow [2024-10-13 12:39:50,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 255 transitions, 3900 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-10-13 12:39:50,430 INFO L231 Difference]: Finished difference. Result has 94 places, 143 transitions, 1949 flow [2024-10-13 12:39:50,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1949, PETRI_PLACES=94, PETRI_TRANSITIONS=143} [2024-10-13 12:39:50,431 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-10-13 12:39:50,431 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 143 transitions, 1949 flow [2024-10-13 12:39:50,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:50,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:50,431 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:50,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 12:39:50,431 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)] === [2024-10-13 12:39:50,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:50,432 INFO L85 PathProgramCache]: Analyzing trace with hash -295026405, now seen corresponding path program 1 times [2024-10-13 12:39:50,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:50,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245876790] [2024-10-13 12:39:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:50,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:50,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:50,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:50,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245876790] [2024-10-13 12:39:50,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245876790] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:50,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533162439] [2024-10-13 12:39:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:50,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:50,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:50,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:50,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 12:39:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:50,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:39:50,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:50,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:50,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533162439] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:50,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:50,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-10-13 12:39:50,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805731589] [2024-10-13 12:39:50,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:50,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:39:50,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:50,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:39:50,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:39:50,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-13 12:39:50,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 143 transitions, 1949 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:50,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:50,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-13 12:39:50,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:52,512 INFO L124 PetriNetUnfolderBase]: 5189/11026 cut-off events. [2024-10-13 12:39:52,512 INFO L125 PetriNetUnfolderBase]: For 88879/89347 co-relation queries the response was YES. [2024-10-13 12:39:52,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56217 conditions, 11026 events. 5189/11026 cut-off events. For 88879/89347 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 94631 event pairs, 1073 based on Foata normal form. 73/10804 useless extension candidates. Maximal degree in co-relation 48574. Up to 5101 conditions per place. [2024-10-13 12:39:52,607 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 271 selfloop transitions, 17 changer transitions 1/319 dead transitions. [2024-10-13 12:39:52,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 319 transitions, 4991 flow [2024-10-13 12:39:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:39:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:39:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-10-13 12:39:52,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7733333333333333 [2024-10-13 12:39:52,608 INFO L175 Difference]: Start difference. First operand has 94 places, 143 transitions, 1949 flow. Second operand 5 states and 116 transitions. [2024-10-13 12:39:52,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 319 transitions, 4991 flow [2024-10-13 12:39:52,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 319 transitions, 4974 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-13 12:39:52,834 INFO L231 Difference]: Finished difference. Result has 98 places, 155 transitions, 2045 flow [2024-10-13 12:39:52,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2045, PETRI_PLACES=98, PETRI_TRANSITIONS=155} [2024-10-13 12:39:52,836 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-10-13 12:39:52,836 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 155 transitions, 2045 flow [2024-10-13 12:39:52,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:52,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:52,837 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:52,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 12:39:53,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:53,038 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)] === [2024-10-13 12:39:53,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:53,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1779713525, now seen corresponding path program 2 times [2024-10-13 12:39:53,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:53,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187836693] [2024-10-13 12:39:53,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:53,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:39:53,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:53,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187836693] [2024-10-13 12:39:53,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187836693] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:53,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853112107] [2024-10-13 12:39:53,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:39:53,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:53,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:53,259 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:53,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 12:39:53,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:39:53,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:53,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:39:53,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:53,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:39:53,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:39:53,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853112107] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:53,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:53,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-13 12:39:53,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280295755] [2024-10-13 12:39:53,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:53,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:39:53,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:53,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:39:53,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:39:53,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-13 12:39:53,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 155 transitions, 2045 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:53,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:53,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-13 12:39:53,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:55,493 INFO L124 PetriNetUnfolderBase]: 7456/15897 cut-off events. [2024-10-13 12:39:55,493 INFO L125 PetriNetUnfolderBase]: For 136014/136981 co-relation queries the response was YES. [2024-10-13 12:39:55,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85233 conditions, 15897 events. 7456/15897 cut-off events. For 136014/136981 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 142546 event pairs, 1291 based on Foata normal form. 165/15695 useless extension candidates. Maximal degree in co-relation 75190. Up to 5072 conditions per place. [2024-10-13 12:39:55,762 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 338 selfloop transitions, 33 changer transitions 1/402 dead transitions. [2024-10-13 12:39:55,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 402 transitions, 6309 flow [2024-10-13 12:39:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:39:55,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:39:55,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-10-13 12:39:55,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-10-13 12:39:55,771 INFO L175 Difference]: Start difference. First operand has 98 places, 155 transitions, 2045 flow. Second operand 6 states and 140 transitions. [2024-10-13 12:39:55,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 402 transitions, 6309 flow [2024-10-13 12:39:56,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 402 transitions, 6253 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-10-13 12:39:56,170 INFO L231 Difference]: Finished difference. Result has 104 places, 171 transitions, 2178 flow [2024-10-13 12:39:56,171 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2178, PETRI_PLACES=104, PETRI_TRANSITIONS=171} [2024-10-13 12:39:56,171 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-10-13 12:39:56,171 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 171 transitions, 2178 flow [2024-10-13 12:39:56,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:56,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:56,172 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:56,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 12:39:56,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:56,372 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)] === [2024-10-13 12:39:56,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:56,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1500098627, now seen corresponding path program 3 times [2024-10-13 12:39:56,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:56,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682458957] [2024-10-13 12:39:56,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:56,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:39:56,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:56,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682458957] [2024-10-13 12:39:56,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682458957] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:56,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317367891] [2024-10-13 12:39:56,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:39:56,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:56,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:56,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:56,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 12:39:56,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 12:39:56,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:56,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:39:56,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:39:56,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:39:56,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317367891] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:56,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:56,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-13 12:39:56,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56242642] [2024-10-13 12:39:56,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:56,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:39:56,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:56,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:39:56,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:39:56,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-13 12:39:56,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 171 transitions, 2178 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:56,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:56,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-13 12:39:56,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:40:00,155 INFO L124 PetriNetUnfolderBase]: 10939/23373 cut-off events. [2024-10-13 12:40:00,155 INFO L125 PetriNetUnfolderBase]: For 202900/204137 co-relation queries the response was YES. [2024-10-13 12:40:00,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126902 conditions, 23373 events. 10939/23373 cut-off events. For 202900/204137 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 223705 event pairs, 1539 based on Foata normal form. 228/23113 useless extension candidates. Maximal degree in co-relation 111832. Up to 12100 conditions per place. [2024-10-13 12:40:00,368 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 401 selfloop transitions, 27 changer transitions 1/459 dead transitions. [2024-10-13 12:40:00,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 459 transitions, 7145 flow [2024-10-13 12:40:00,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:40:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:40:00,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-10-13 12:40:00,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8 [2024-10-13 12:40:00,373 INFO L175 Difference]: Start difference. First operand has 104 places, 171 transitions, 2178 flow. Second operand 6 states and 144 transitions. [2024-10-13 12:40:00,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 459 transitions, 7145 flow [2024-10-13 12:40:01,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 459 transitions, 7074 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-10-13 12:40:01,006 INFO L231 Difference]: Finished difference. Result has 110 places, 193 transitions, 2362 flow [2024-10-13 12:40:01,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2149, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2362, PETRI_PLACES=110, PETRI_TRANSITIONS=193} [2024-10-13 12:40:01,007 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-10-13 12:40:01,007 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 193 transitions, 2362 flow [2024-10-13 12:40:01,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:40:01,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:40:01,008 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:40:01,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 12:40:01,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 12:40:01,209 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)] === [2024-10-13 12:40:01,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:40:01,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1772160307, now seen corresponding path program 1 times [2024-10-13 12:40:01,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:40:01,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308548006] [2024-10-13 12:40:01,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:40:01,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:40:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:40:01,307 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:40:01,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:40:01,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308548006] [2024-10-13 12:40:01,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308548006] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:40:01,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:40:01,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:40:01,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092006245] [2024-10-13 12:40:01,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:40:01,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:40:01,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:40:01,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:40:01,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:40:01,312 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-13 12:40:01,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 193 transitions, 2362 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:40:01,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:40:01,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-13 12:40:01,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:40:03,198 INFO L124 PetriNetUnfolderBase]: 6448/14231 cut-off events. [2024-10-13 12:40:03,198 INFO L125 PetriNetUnfolderBase]: For 132659/133145 co-relation queries the response was YES. [2024-10-13 12:40:03,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77325 conditions, 14231 events. 6448/14231 cut-off events. For 132659/133145 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 133131 event pairs, 1260 based on Foata normal form. 482/14448 useless extension candidates. Maximal degree in co-relation 68506. Up to 5129 conditions per place. [2024-10-13 12:40:03,334 INFO L140 encePairwiseOnDemand]: 28/30 looper letters, 201 selfloop transitions, 27 changer transitions 0/279 dead transitions. [2024-10-13 12:40:03,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 279 transitions, 3989 flow [2024-10-13 12:40:03,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:40:03,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:40:03,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-10-13 12:40:03,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-10-13 12:40:03,335 INFO L175 Difference]: Start difference. First operand has 110 places, 193 transitions, 2362 flow. Second operand 4 states and 84 transitions. [2024-10-13 12:40:03,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 279 transitions, 3989 flow [2024-10-13 12:40:03,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 279 transitions, 3957 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-10-13 12:40:03,780 INFO L231 Difference]: Finished difference. Result has 115 places, 174 transitions, 2233 flow [2024-10-13 12:40:03,781 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2144, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2233, PETRI_PLACES=115, PETRI_TRANSITIONS=174} [2024-10-13 12:40:03,781 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-10-13 12:40:03,781 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 174 transitions, 2233 flow [2024-10-13 12:40:03,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:40:03,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:40:03,781 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:40:03,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 12:40:03,782 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)] === [2024-10-13 12:40:03,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:40:03,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1341369453, now seen corresponding path program 4 times [2024-10-13 12:40:03,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:40:03,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585901915] [2024-10-13 12:40:03,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:40:03,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:40:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:40:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:40:03,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:40:03,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585901915] [2024-10-13 12:40:03,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585901915] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:40:03,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414386084] [2024-10-13 12:40:03,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:40:03,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:40:03,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:40:03,919 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:40:03,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 12:40:03,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:40:03,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:40:03,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:40:03,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:40:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:40:04,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:40:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:40:04,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414386084] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:40:04,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:40:04,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-13 12:40:04,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351375884] [2024-10-13 12:40:04,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:40:04,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:40:04,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:40:04,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:40:04,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:40:04,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-13 12:40:04,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 174 transitions, 2233 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:40:04,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:40:04,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-13 12:40:04,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:40:06,667 INFO L124 PetriNetUnfolderBase]: 8453/18790 cut-off events. [2024-10-13 12:40:06,667 INFO L125 PetriNetUnfolderBase]: For 200410/201678 co-relation queries the response was YES. [2024-10-13 12:40:06,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107659 conditions, 18790 events. 8453/18790 cut-off events. For 200410/201678 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 186077 event pairs, 1199 based on Foata normal form. 327/18717 useless extension candidates. Maximal degree in co-relation 93259. Up to 8800 conditions per place. [2024-10-13 12:40:07,012 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 371 selfloop transitions, 30 changer transitions 1/433 dead transitions. [2024-10-13 12:40:07,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 433 transitions, 6865 flow [2024-10-13 12:40:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:40:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:40:07,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-10-13 12:40:07,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8 [2024-10-13 12:40:07,014 INFO L175 Difference]: Start difference. First operand has 115 places, 174 transitions, 2233 flow. Second operand 6 states and 144 transitions. [2024-10-13 12:40:07,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 433 transitions, 6865 flow [2024-10-13 12:40:07,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 433 transitions, 6865 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:40:07,756 INFO L231 Difference]: Finished difference. Result has 123 places, 199 transitions, 2511 flow [2024-10-13 12:40:07,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2233, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2511, PETRI_PLACES=123, PETRI_TRANSITIONS=199} [2024-10-13 12:40:07,757 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-10-13 12:40:07,757 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 199 transitions, 2511 flow [2024-10-13 12:40:07,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:40:07,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:40:07,758 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:40:07,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 12:40:07,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:40:07,959 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)] === [2024-10-13 12:40:07,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:40:07,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1111740841, now seen corresponding path program 5 times [2024-10-13 12:40:07,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:40:07,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398186916] [2024-10-13 12:40:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:40:07,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:40:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:40:08,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:40:08,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:40:08,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398186916] [2024-10-13 12:40:08,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398186916] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:40:08,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526819131] [2024-10-13 12:40:08,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:40:08,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:40:08,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:40:08,099 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:40:08,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 12:40:08,151 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-13 12:40:08,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:40:08,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:40:08,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:40:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:40:08,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:40:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:40:08,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526819131] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:40:08,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:40:08,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-13 12:40:08,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729718817] [2024-10-13 12:40:08,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:40:08,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:40:08,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:40:08,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:40:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:40:08,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-13 12:40:08,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 199 transitions, 2511 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:40:08,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:40:08,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-13 12:40:08,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:40:11,380 INFO L124 PetriNetUnfolderBase]: 9743/21597 cut-off events. [2024-10-13 12:40:11,380 INFO L125 PetriNetUnfolderBase]: For 246161/248167 co-relation queries the response was YES. [2024-10-13 12:40:11,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129277 conditions, 21597 events. 9743/21597 cut-off events. For 246161/248167 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 217822 event pairs, 1621 based on Foata normal form. 481/21655 useless extension candidates. Maximal degree in co-relation 112429. Up to 10836 conditions per place. [2024-10-13 12:40:11,644 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 353 selfloop transitions, 53 changer transitions 1/438 dead transitions. [2024-10-13 12:40:11,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 438 transitions, 6910 flow [2024-10-13 12:40:11,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:40:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:40:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-10-13 12:40:11,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2024-10-13 12:40:11,646 INFO L175 Difference]: Start difference. First operand has 123 places, 199 transitions, 2511 flow. Second operand 6 states and 141 transitions. [2024-10-13 12:40:11,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 438 transitions, 6910 flow [2024-10-13 12:40:12,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 438 transitions, 6880 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-10-13 12:40:12,609 INFO L231 Difference]: Finished difference. Result has 131 places, 227 transitions, 2930 flow [2024-10-13 12:40:12,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2930, PETRI_PLACES=131, PETRI_TRANSITIONS=227} [2024-10-13 12:40:12,609 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-10-13 12:40:12,610 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 227 transitions, 2930 flow [2024-10-13 12:40:12,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:40:12,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:40:12,610 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:40:12,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 12:40:12,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:40:12,811 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)] === [2024-10-13 12:40:12,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:40:12,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1154319799, now seen corresponding path program 1 times [2024-10-13 12:40:12,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:40:12,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478600305] [2024-10-13 12:40:12,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:40:12,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:40:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:40:12,886 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 12:40:12,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:40:12,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478600305] [2024-10-13 12:40:12,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478600305] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:40:12,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:40:12,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:40:12,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154306326] [2024-10-13 12:40:12,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:40:12,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:40:12,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:40:12,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:40:12,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:40:12,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-13 12:40:12,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 227 transitions, 2930 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:40:12,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:40:12,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-13 12:40:12,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:40:14,255 INFO L124 PetriNetUnfolderBase]: 4678/10861 cut-off events. [2024-10-13 12:40:14,256 INFO L125 PetriNetUnfolderBase]: For 148847/150145 co-relation queries the response was YES. [2024-10-13 12:40:14,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68069 conditions, 10861 events. 4678/10861 cut-off events. For 148847/150145 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 99191 event pairs, 735 based on Foata normal form. 421/10926 useless extension candidates. Maximal degree in co-relation 60889. Up to 3625 conditions per place. [2024-10-13 12:40:14,480 INFO L140 encePairwiseOnDemand]: 28/30 looper letters, 157 selfloop transitions, 31 changer transitions 0/254 dead transitions. [2024-10-13 12:40:14,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 254 transitions, 3837 flow [2024-10-13 12:40:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:40:14,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:40:14,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-10-13 12:40:14,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-10-13 12:40:14,482 INFO L175 Difference]: Start difference. First operand has 131 places, 227 transitions, 2930 flow. Second operand 4 states and 84 transitions. [2024-10-13 12:40:14,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 254 transitions, 3837 flow [2024-10-13 12:40:14,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 254 transitions, 3810 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-13 12:40:14,733 INFO L231 Difference]: Finished difference. Result has 135 places, 193 transitions, 2614 flow [2024-10-13 12:40:14,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2513, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2614, PETRI_PLACES=135, PETRI_TRANSITIONS=193} [2024-10-13 12:40:14,734 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-10-13 12:40:14,734 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 193 transitions, 2614 flow [2024-10-13 12:40:14,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:40:14,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:40:14,734 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:40:14,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 12:40:14,735 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)] === [2024-10-13 12:40:14,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:40:14,735 INFO L85 PathProgramCache]: Analyzing trace with hash 967356539, now seen corresponding path program 6 times [2024-10-13 12:40:14,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:40:14,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178897538] [2024-10-13 12:40:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:40:14,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:40:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:40:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:40:15,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:40:15,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178897538] [2024-10-13 12:40:15,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178897538] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:40:15,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853176243] [2024-10-13 12:40:15,284 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:40:15,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:40:15,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:40:15,286 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:40:15,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 12:40:15,364 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-13 12:40:15,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:40:15,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 12:40:15,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:40:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:40:15,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:40:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:40:21,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853176243] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:40:21,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:40:21,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2024-10-13 12:40:21,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311344907] [2024-10-13 12:40:21,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:40:21,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 12:40:21,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:40:21,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 12:40:21,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=397, Unknown=1, NotChecked=0, Total=506 [2024-10-13 12:40:21,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-10-13 12:40:21,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 193 transitions, 2614 flow. Second operand has 23 states, 23 states have (on average 13.0) internal successors, (299), 23 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:40:21,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:40:21,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-10-13 12:40:21,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:40:29,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-13 12:40:58,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-13 12:41:10,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []