./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:43:45,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:43:45,651 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:43:45,655 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:43:45,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:43:45,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:43:45,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:43:45,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:43:45,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:43:45,685 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:43:45,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:43:45,686 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:43:45,687 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:43:45,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:43:45,690 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:43:45,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:43:45,691 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:43:45,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:43:45,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:43:45,695 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:43:45,695 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:43:45,696 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:43:45,696 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:43:45,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:43:45,696 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:43:45,697 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:43:45,697 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:43:45,697 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:43:45,697 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:43:45,698 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:43:45,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:43:45,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:43:45,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:43:45,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:43:45,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:43:45,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:43:45,699 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:43:45,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:43:45,700 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:43:45,700 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:43:45,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:43:45,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:43:45,702 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2024-10-11 19:43:45,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:43:45,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:43:45,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:43:45,992 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:43:45,993 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:43:45,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-10-11 19:43:47,442 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:43:47,716 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:43:47,719 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-10-11 19:43:47,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/77fee6e3f/975e8c1548e54094afb5cc9ddc46395d/FLAG9298b2fc4 [2024-10-11 19:43:48,019 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/77fee6e3f/975e8c1548e54094afb5cc9ddc46395d [2024-10-11 19:43:48,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:43:48,023 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:43:48,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:43:48,025 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:43:48,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:43:48,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:43:48" (1/1) ... [2024-10-11 19:43:48,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd1274c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48, skipping insertion in model container [2024-10-11 19:43:48,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:43:48" (1/1) ... [2024-10-11 19:43:48,095 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:43:48,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:43:48,730 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:43:48,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:43:48,914 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:43:48,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48 WrapperNode [2024-10-11 19:43:48,915 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:43:48,916 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:43:48,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:43:48,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:43:48,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48" (1/1) ... [2024-10-11 19:43:48,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48" (1/1) ... [2024-10-11 19:43:48,999 INFO L138 Inliner]: procedures = 364, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-10-11 19:43:49,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:43:49,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:43:49,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:43:49,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:43:49,011 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48" (1/1) ... [2024-10-11 19:43:49,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48" (1/1) ... [2024-10-11 19:43:49,015 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48" (1/1) ... [2024-10-11 19:43:49,039 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-10-11 19:43:49,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48" (1/1) ... [2024-10-11 19:43:49,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48" (1/1) ... [2024-10-11 19:43:49,044 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48" (1/1) ... [2024-10-11 19:43:49,047 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48" (1/1) ... [2024-10-11 19:43:49,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48" (1/1) ... [2024-10-11 19:43:49,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48" (1/1) ... [2024-10-11 19:43:49,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:43:49,054 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:43:49,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:43:49,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:43:49,055 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48" (1/1) ... [2024-10-11 19:43:49,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:43:49,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:43:49,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:43:49,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:43:49,160 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 19:43:49,161 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 19:43:49,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:43:49,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2024-10-11 19:43:49,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2024-10-11 19:43:49,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:43:49,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 19:43:49,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:43:49,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:43:49,164 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:43:49,329 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:43:49,333 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:43:49,533 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:43:49,533 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:43:49,688 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:43:49,688 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 19:43:49,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:43:49 BoogieIcfgContainer [2024-10-11 19:43:49,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:43:49,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:43:49,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:43:49,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:43:49,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:43:48" (1/3) ... [2024-10-11 19:43:49,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72773aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:43:49, skipping insertion in model container [2024-10-11 19:43:49,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:43:48" (2/3) ... [2024-10-11 19:43:49,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72773aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:43:49, skipping insertion in model container [2024-10-11 19:43:49,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:43:49" (3/3) ... [2024-10-11 19:43:49,699 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2024-10-11 19:43:49,717 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:43:49,718 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 19:43:49,718 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:43:49,746 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 19:43:49,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 29 transitions, 65 flow [2024-10-11 19:43:49,800 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-10-11 19:43:49,800 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 19:43:49,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 4/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-10-11 19:43:49,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 29 transitions, 65 flow [2024-10-11 19:43:49,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 27 transitions, 60 flow [2024-10-11 19:43:49,823 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:43:49,834 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;@1529f342, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:43:49,835 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-11 19:43:49,844 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:43:49,845 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-10-11 19:43:49,845 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 19:43:49,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:43:49,846 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:43:49,846 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:43:49,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:43:49,852 INFO L85 PathProgramCache]: Analyzing trace with hash -54454784, now seen corresponding path program 1 times [2024-10-11 19:43:49,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:43:49,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041343442] [2024-10-11 19:43:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:43:49,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:43:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:43:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:43:50,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:43:50,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041343442] [2024-10-11 19:43:50,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041343442] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:43:50,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:43:50,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:43:50,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889535813] [2024-10-11 19:43:50,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:43:50,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:43:50,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:43:50,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:43:50,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:43:50,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-11 19:43:50,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:50,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:43:50,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-11 19:43:50,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:43:50,299 INFO L124 PetriNetUnfolderBase]: 61/135 cut-off events. [2024-10-11 19:43:50,299 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 19:43:50,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 135 events. 61/135 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 400 event pairs, 27 based on Foata normal form. 9/143 useless extension candidates. Maximal degree in co-relation 247. Up to 78 conditions per place. [2024-10-11 19:43:50,306 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 2 changer transitions 1/32 dead transitions. [2024-10-11 19:43:50,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 124 flow [2024-10-11 19:43:50,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:43:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:43:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-10-11 19:43:50,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-10-11 19:43:50,325 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-10-11 19:43:50,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 124 flow [2024-10-11 19:43:50,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:43:50,330 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 56 flow [2024-10-11 19:43:50,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2024-10-11 19:43:50,336 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2024-10-11 19:43:50,336 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 56 flow [2024-10-11 19:43:50,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:50,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:43:50,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:43:50,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:43:50,337 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:43:50,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:43:50,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1209453456, now seen corresponding path program 1 times [2024-10-11 19:43:50,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:43:50,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268981133] [2024-10-11 19:43:50,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:43:50,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:43:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:43:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:43:50,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:43:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268981133] [2024-10-11 19:43:50,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268981133] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:43:50,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:43:50,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:43:50,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849007664] [2024-10-11 19:43:50,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:43:50,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:43:50,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:43:50,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:43:50,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:43:50,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-11 19:43:50,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:50,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:43:50,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-11 19:43:50,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:43:50,621 INFO L124 PetriNetUnfolderBase]: 101/222 cut-off events. [2024-10-11 19:43:50,621 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-10-11 19:43:50,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 222 events. 101/222 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 780 event pairs, 53 based on Foata normal form. 10/231 useless extension candidates. Maximal degree in co-relation 123. Up to 126 conditions per place. [2024-10-11 19:43:50,625 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-10-11 19:43:50,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 33 transitions, 146 flow [2024-10-11 19:43:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:43:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:43:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-10-11 19:43:50,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-10-11 19:43:50,630 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 3 states and 49 transitions. [2024-10-11 19:43:50,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 33 transitions, 146 flow [2024-10-11 19:43:50,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:43:50,634 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 66 flow [2024-10-11 19:43:50,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=26, PETRI_TRANSITIONS=23} [2024-10-11 19:43:50,635 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2024-10-11 19:43:50,637 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 66 flow [2024-10-11 19:43:50,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:50,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:43:50,638 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] [2024-10-11 19:43:50,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:43:50,638 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:43:50,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:43:50,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2077585499, now seen corresponding path program 1 times [2024-10-11 19:43:50,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:43:50,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222493880] [2024-10-11 19:43:50,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:43:50,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:43:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:43:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:43:50,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:43:50,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222493880] [2024-10-11 19:43:50,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222493880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:43:50,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:43:50,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:43:50,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312190750] [2024-10-11 19:43:50,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:43:50,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:43:50,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:43:50,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:43:50,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:43:50,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-11 19:43:50,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:50,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:43:50,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-11 19:43:50,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:43:50,931 INFO L124 PetriNetUnfolderBase]: 69/171 cut-off events. [2024-10-11 19:43:50,931 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-11 19:43:50,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 171 events. 69/171 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 530 event pairs, 25 based on Foata normal form. 16/186 useless extension candidates. Maximal degree in co-relation 134. Up to 80 conditions per place. [2024-10-11 19:43:50,933 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 23 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-10-11 19:43:50,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 154 flow [2024-10-11 19:43:50,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:43:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:43:50,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-10-11 19:43:50,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-10-11 19:43:50,936 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 66 flow. Second operand 3 states and 46 transitions. [2024-10-11 19:43:50,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 154 flow [2024-10-11 19:43:50,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:43:50,937 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 72 flow [2024-10-11 19:43:50,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2024-10-11 19:43:50,940 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-10-11 19:43:50,941 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 72 flow [2024-10-11 19:43:50,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:50,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:43:50,942 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] [2024-10-11 19:43:50,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:43:50,942 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:43:50,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:43:50,943 INFO L85 PathProgramCache]: Analyzing trace with hash -834231567, now seen corresponding path program 2 times [2024-10-11 19:43:50,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:43:50,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174403509] [2024-10-11 19:43:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:43:50,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:43:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:43:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:43:51,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:43:51,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174403509] [2024-10-11 19:43:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174403509] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:43:51,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480023860] [2024-10-11 19:43:51,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:43:51,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:43:51,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:43:51,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:43:51,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:43:51,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:43:51,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:43:51,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:43:51,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:43:51,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:43:51,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:43:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:43:51,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480023860] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:43:51,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:43:51,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-11 19:43:51,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742936443] [2024-10-11 19:43:51,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:43:51,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 19:43:51,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:43:51,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 19:43:51,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-11 19:43:51,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-11 19:43:51,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 72 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:51,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:43:51,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-11 19:43:51,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:43:51,408 INFO L124 PetriNetUnfolderBase]: 167/379 cut-off events. [2024-10-11 19:43:51,409 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-10-11 19:43:51,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 379 events. 167/379 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1246 event pairs, 24 based on Foata normal form. 30/409 useless extension candidates. Maximal degree in co-relation 297. Up to 86 conditions per place. [2024-10-11 19:43:51,417 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 57 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2024-10-11 19:43:51,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 66 transitions, 348 flow [2024-10-11 19:43:51,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:43:51,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:43:51,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-10-11 19:43:51,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2024-10-11 19:43:51,423 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 72 flow. Second operand 6 states and 97 transitions. [2024-10-11 19:43:51,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 66 transitions, 348 flow [2024-10-11 19:43:51,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 66 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:43:51,426 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 108 flow [2024-10-11 19:43:51,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2024-10-11 19:43:51,427 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2024-10-11 19:43:51,427 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 108 flow [2024-10-11 19:43:51,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:51,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:43:51,428 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:43:51,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 19:43:51,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:43:51,629 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:43:51,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:43:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash -36039780, now seen corresponding path program 3 times [2024-10-11 19:43:51,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:43:51,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745527707] [2024-10-11 19:43:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:43:51,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:43:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:43:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 19:43:51,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:43:51,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745527707] [2024-10-11 19:43:51,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745527707] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:43:51,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974002652] [2024-10-11 19:43:51,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:43:51,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:43:51,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:43:51,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:43:51,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 19:43:51,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 19:43:51,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:43:51,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:43:51,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:43:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 19:43:51,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:43:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 19:43:51,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974002652] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:43:51,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:43:51,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-11 19:43:51,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546906798] [2024-10-11 19:43:51,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:43:51,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 19:43:51,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:43:51,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 19:43:51,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-11 19:43:51,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-11 19:43:51,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:51,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:43:51,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-11 19:43:51,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:43:52,085 INFO L124 PetriNetUnfolderBase]: 294/695 cut-off events. [2024-10-11 19:43:52,086 INFO L125 PetriNetUnfolderBase]: For 864/864 co-relation queries the response was YES. [2024-10-11 19:43:52,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 695 events. 294/695 cut-off events. For 864/864 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2875 event pairs, 51 based on Foata normal form. 57/752 useless extension candidates. Maximal degree in co-relation 1232. Up to 156 conditions per place. [2024-10-11 19:43:52,091 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 67 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-10-11 19:43:52,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 77 transitions, 518 flow [2024-10-11 19:43:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:43:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:43:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-10-11 19:43:52,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2024-10-11 19:43:52,093 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 108 flow. Second operand 6 states and 97 transitions. [2024-10-11 19:43:52,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 77 transitions, 518 flow [2024-10-11 19:43:52,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 77 transitions, 478 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-10-11 19:43:52,098 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 140 flow [2024-10-11 19:43:52,098 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2024-10-11 19:43:52,098 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2024-10-11 19:43:52,099 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 140 flow [2024-10-11 19:43:52,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:52,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:43:52,100 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:43:52,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 19:43:52,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:43:52,304 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:43:52,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:43:52,305 INFO L85 PathProgramCache]: Analyzing trace with hash 198452272, now seen corresponding path program 4 times [2024-10-11 19:43:52,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:43:52,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197882064] [2024-10-11 19:43:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:43:52,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:43:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:43:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 19:43:52,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:43:52,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197882064] [2024-10-11 19:43:52,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197882064] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:43:52,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083087598] [2024-10-11 19:43:52,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:43:52,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:43:52,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:43:52,465 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:43:52,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 19:43:52,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:43:52,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:43:52,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:43:52,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:43:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-11 19:43:52,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:43:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-11 19:43:52,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083087598] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:43:52,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:43:52,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-11 19:43:52,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720691753] [2024-10-11 19:43:52,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:43:52,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 19:43:52,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:43:52,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 19:43:52,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-10-11 19:43:52,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-11 19:43:52,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 140 flow. Second operand has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:52,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:43:52,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-11 19:43:52,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:43:54,372 INFO L124 PetriNetUnfolderBase]: 899/2079 cut-off events. [2024-10-11 19:43:54,372 INFO L125 PetriNetUnfolderBase]: For 3912/3912 co-relation queries the response was YES. [2024-10-11 19:43:54,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6875 conditions, 2079 events. 899/2079 cut-off events. For 3912/3912 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10229 event pairs, 8 based on Foata normal form. 209/2288 useless extension candidates. Maximal degree in co-relation 3345. Up to 371 conditions per place. [2024-10-11 19:43:54,389 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 471 selfloop transitions, 138 changer transitions 0/613 dead transitions. [2024-10-11 19:43:54,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 613 transitions, 3748 flow [2024-10-11 19:43:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-10-11 19:43:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-10-11 19:43:54,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1058 transitions. [2024-10-11 19:43:54,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5445187853834277 [2024-10-11 19:43:54,395 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 140 flow. Second operand 67 states and 1058 transitions. [2024-10-11 19:43:54,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 613 transitions, 3748 flow [2024-10-11 19:43:54,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 613 transitions, 3628 flow, removed 54 selfloop flow, removed 1 redundant places. [2024-10-11 19:43:54,411 INFO L231 Difference]: Finished difference. Result has 154 places, 168 transitions, 1566 flow [2024-10-11 19:43:54,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=1566, PETRI_PLACES=154, PETRI_TRANSITIONS=168} [2024-10-11 19:43:54,412 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 127 predicate places. [2024-10-11 19:43:54,413 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 168 transitions, 1566 flow [2024-10-11 19:43:54,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:54,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:43:54,413 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:43:54,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 19:43:54,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:43:54,614 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:43:54,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:43:54,615 INFO L85 PathProgramCache]: Analyzing trace with hash 518035977, now seen corresponding path program 5 times [2024-10-11 19:43:54,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:43:54,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317380934] [2024-10-11 19:43:54,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:43:54,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:43:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:43:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-11 19:43:54,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:43:54,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317380934] [2024-10-11 19:43:54,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317380934] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:43:54,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069440954] [2024-10-11 19:43:54,884 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 19:43:54,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:43:54,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:43:54,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:43:54,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 19:43:55,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-11 19:43:55,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:43:55,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:43:55,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:43:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-11 19:43:55,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:43:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-11 19:43:55,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069440954] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:43:55,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:43:55,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-11 19:43:55,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736328602] [2024-10-11 19:43:55,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:43:55,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 19:43:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:43:55,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 19:43:55,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-10-11 19:43:55,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-11 19:43:55,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 168 transitions, 1566 flow. Second operand has 15 states, 15 states have (on average 11.066666666666666) internal successors, (166), 15 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:55,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:43:55,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-11 19:43:55,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:43:56,393 INFO L124 PetriNetUnfolderBase]: 1737/4078 cut-off events. [2024-10-11 19:43:56,393 INFO L125 PetriNetUnfolderBase]: For 95210/95210 co-relation queries the response was YES. [2024-10-11 19:43:56,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18062 conditions, 4078 events. 1737/4078 cut-off events. For 95210/95210 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 22813 event pairs, 142 based on Foata normal form. 301/4371 useless extension candidates. Maximal degree in co-relation 16107. Up to 693 conditions per place. [2024-10-11 19:43:56,444 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 249 selfloop transitions, 144 changer transitions 0/403 dead transitions. [2024-10-11 19:43:56,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 403 transitions, 4822 flow [2024-10-11 19:43:56,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 19:43:56,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 19:43:56,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 237 transitions. [2024-10-11 19:43:56,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.583743842364532 [2024-10-11 19:43:56,446 INFO L175 Difference]: Start difference. First operand has 154 places, 168 transitions, 1566 flow. Second operand 14 states and 237 transitions. [2024-10-11 19:43:56,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 403 transitions, 4822 flow [2024-10-11 19:43:56,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 403 transitions, 4678 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 19:43:56,792 INFO L231 Difference]: Finished difference. Result has 169 places, 235 transitions, 2480 flow [2024-10-11 19:43:56,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2480, PETRI_PLACES=169, PETRI_TRANSITIONS=235} [2024-10-11 19:43:56,793 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 142 predicate places. [2024-10-11 19:43:56,793 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 235 transitions, 2480 flow [2024-10-11 19:43:56,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.066666666666666) internal successors, (166), 15 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:56,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:43:56,794 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:43:56,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 19:43:56,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 19:43:56,995 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:43:56,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:43:56,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2096148932, now seen corresponding path program 6 times [2024-10-11 19:43:56,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:43:56,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345987870] [2024-10-11 19:43:56,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:43:56,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:43:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:43:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-10-11 19:43:57,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:43:57,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345987870] [2024-10-11 19:43:57,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345987870] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:43:57,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946741289] [2024-10-11 19:43:57,417 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 19:43:57,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:43:57,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:43:57,422 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:43:57,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 19:43:57,725 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-10-11 19:43:57,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:43:57,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:43:57,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:43:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-10-11 19:43:57,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:43:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-10-11 19:43:58,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946741289] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:43:58,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:43:58,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-10-11 19:43:58,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125974364] [2024-10-11 19:43:58,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:43:58,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 19:43:58,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:43:58,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 19:43:58,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-10-11 19:43:58,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-11 19:43:58,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 235 transitions, 2480 flow. Second operand has 23 states, 23 states have (on average 11.26086956521739) internal successors, (259), 23 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:43:58,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:43:58,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-11 19:43:58,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:00,646 INFO L124 PetriNetUnfolderBase]: 3233/7598 cut-off events. [2024-10-11 19:44:00,646 INFO L125 PetriNetUnfolderBase]: For 455403/455403 co-relation queries the response was YES. [2024-10-11 19:44:00,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36150 conditions, 7598 events. 3233/7598 cut-off events. For 455403/455403 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 46413 event pairs, 122 based on Foata normal form. 510/8108 useless extension candidates. Maximal degree in co-relation 32294. Up to 1339 conditions per place. [2024-10-11 19:44:00,739 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 623 selfloop transitions, 132 changer transitions 0/760 dead transitions. [2024-10-11 19:44:00,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 760 transitions, 9564 flow [2024-10-11 19:44:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:44:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:44:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 376 transitions. [2024-10-11 19:44:00,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5893416927899686 [2024-10-11 19:44:00,741 INFO L175 Difference]: Start difference. First operand has 169 places, 235 transitions, 2480 flow. Second operand 22 states and 376 transitions. [2024-10-11 19:44:00,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 760 transitions, 9564 flow [2024-10-11 19:44:01,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 760 transitions, 9254 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 19:44:01,093 INFO L231 Difference]: Finished difference. Result has 196 places, 301 transitions, 3470 flow [2024-10-11 19:44:01,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3470, PETRI_PLACES=196, PETRI_TRANSITIONS=301} [2024-10-11 19:44:01,095 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 169 predicate places. [2024-10-11 19:44:01,095 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 301 transitions, 3470 flow [2024-10-11 19:44:01,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.26086956521739) internal successors, (259), 23 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:01,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:01,096 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:01,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 19:44:01,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:44:01,299 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:44:01,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:01,300 INFO L85 PathProgramCache]: Analyzing trace with hash 896442158, now seen corresponding path program 7 times [2024-10-11 19:44:01,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:44:01,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902742953] [2024-10-11 19:44:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:01,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:44:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-11 19:44:01,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:44:01,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902742953] [2024-10-11 19:44:01,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902742953] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:44:01,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159724291] [2024-10-11 19:44:01,868 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 19:44:01,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:44:01,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:44:01,870 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:44:01,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 19:44:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:02,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:44:02,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:02,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-11 19:44:02,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:44:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-11 19:44:02,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159724291] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:44:02,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:44:02,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-10-11 19:44:02,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884176682] [2024-10-11 19:44:02,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:44:02,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 19:44:02,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:44:02,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 19:44:02,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-10-11 19:44:02,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-11 19:44:02,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 301 transitions, 3470 flow. Second operand has 23 states, 23 states have (on average 11.043478260869565) internal successors, (254), 23 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:02,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:02,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-11 19:44:02,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:05,833 INFO L124 PetriNetUnfolderBase]: 5485/12756 cut-off events. [2024-10-11 19:44:05,834 INFO L125 PetriNetUnfolderBase]: For 340736/340746 co-relation queries the response was YES. [2024-10-11 19:44:06,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61911 conditions, 12756 events. 5485/12756 cut-off events. For 340736/340746 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 82634 event pairs, 232 based on Foata normal form. 674/13330 useless extension candidates. Maximal degree in co-relation 57477. Up to 2163 conditions per place. [2024-10-11 19:44:06,064 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 611 selfloop transitions, 232 changer transitions 0/859 dead transitions. [2024-10-11 19:44:06,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 859 transitions, 12612 flow [2024-10-11 19:44:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:44:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:44:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 374 transitions. [2024-10-11 19:44:06,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-10-11 19:44:06,067 INFO L175 Difference]: Start difference. First operand has 196 places, 301 transitions, 3470 flow. Second operand 22 states and 374 transitions. [2024-10-11 19:44:06,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 859 transitions, 12612 flow [2024-10-11 19:44:06,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 859 transitions, 12234 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-10-11 19:44:06,623 INFO L231 Difference]: Finished difference. Result has 217 places, 390 transitions, 5110 flow [2024-10-11 19:44:06,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5110, PETRI_PLACES=217, PETRI_TRANSITIONS=390} [2024-10-11 19:44:06,624 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 190 predicate places. [2024-10-11 19:44:06,624 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 390 transitions, 5110 flow [2024-10-11 19:44:06,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.043478260869565) internal successors, (254), 23 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:06,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:06,625 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:06,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 19:44:06,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 19:44:06,826 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:44:06,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1070401404, now seen corresponding path program 8 times [2024-10-11 19:44:06,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:44:06,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601475541] [2024-10-11 19:44:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:06,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:44:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:09,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:44:09,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601475541] [2024-10-11 19:44:09,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601475541] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:44:09,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563686278] [2024-10-11 19:44:09,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:44:09,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:44:09,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:44:09,376 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:44:09,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 19:44:09,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:44:09,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:44:09,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-10-11 19:44:09,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:09,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:44:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:44:10,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563686278] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:44:10,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:44:10,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-10-11 19:44:10,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382211049] [2024-10-11 19:44:10,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:44:10,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-11 19:44:10,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:44:10,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-11 19:44:10,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2024-10-11 19:44:10,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-11 19:44:10,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 390 transitions, 5110 flow. Second operand has 45 states, 45 states have (on average 9.8) internal successors, (441), 45 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:10,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:10,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-11 19:44:10,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:24,022 INFO L124 PetriNetUnfolderBase]: 9717/24493 cut-off events. [2024-10-11 19:44:24,022 INFO L125 PetriNetUnfolderBase]: For 1800626/1800626 co-relation queries the response was YES. [2024-10-11 19:44:24,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189669 conditions, 24493 events. 9717/24493 cut-off events. For 1800626/1800626 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 193180 event pairs, 1193 based on Foata normal form. 1/24493 useless extension candidates. Maximal degree in co-relation 146817. Up to 4573 conditions per place. [2024-10-11 19:44:24,485 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 2605 selfloop transitions, 83 changer transitions 2/2710 dead transitions. [2024-10-11 19:44:24,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 2710 transitions, 41131 flow [2024-10-11 19:44:24,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-11 19:44:24,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-11 19:44:24,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 732 transitions. [2024-10-11 19:44:24,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5736677115987461 [2024-10-11 19:44:24,488 INFO L175 Difference]: Start difference. First operand has 217 places, 390 transitions, 5110 flow. Second operand 44 states and 732 transitions. [2024-10-11 19:44:24,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 2710 transitions, 41131 flow [2024-10-11 19:44:32,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 2710 transitions, 39525 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-10-11 19:44:32,589 INFO L231 Difference]: Finished difference. Result has 251 places, 472 transitions, 5210 flow [2024-10-11 19:44:32,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4868, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5210, PETRI_PLACES=251, PETRI_TRANSITIONS=472} [2024-10-11 19:44:32,590 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 224 predicate places. [2024-10-11 19:44:32,590 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 472 transitions, 5210 flow [2024-10-11 19:44:32,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 9.8) internal successors, (441), 45 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:32,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:32,591 INFO L204 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:32,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 19:44:32,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:44:32,791 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:44:32,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:32,792 INFO L85 PathProgramCache]: Analyzing trace with hash -393475920, now seen corresponding path program 9 times [2024-10-11 19:44:32,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:44:32,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541615635] [2024-10-11 19:44:32,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:32,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:44:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 975 proven. 135 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2024-10-11 19:44:33,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:44:33,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541615635] [2024-10-11 19:44:33,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541615635] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:44:33,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038025540] [2024-10-11 19:44:33,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:44:33,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:44:33,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:44:33,562 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:44:33,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 19:44:34,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-10-11 19:44:34,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:44:34,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 19:44:34,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1110 proven. 0 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2024-10-11 19:44:34,449 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:34,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038025540] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:34,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 19:44:34,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-10-11 19:44:34,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787480001] [2024-10-11 19:44:34,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:34,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 19:44:34,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:44:34,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 19:44:34,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-10-11 19:44:34,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-11 19:44:34,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 472 transitions, 5210 flow. Second operand has 23 states, 23 states have (on average 11.173913043478262) internal successors, (257), 23 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:34,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:34,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-11 19:44:34,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:40,650 INFO L124 PetriNetUnfolderBase]: 9149/21024 cut-off events. [2024-10-11 19:44:40,651 INFO L125 PetriNetUnfolderBase]: For 781954/781954 co-relation queries the response was YES. [2024-10-11 19:44:40,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138055 conditions, 21024 events. 9149/21024 cut-off events. For 781954/781954 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 158386 event pairs, 83 based on Foata normal form. 89/21112 useless extension candidates. Maximal degree in co-relation 137960. Up to 4121 conditions per place. [2024-10-11 19:44:41,081 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 2218 selfloop transitions, 126 changer transitions 0/2350 dead transitions. [2024-10-11 19:44:41,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 2350 transitions, 23102 flow [2024-10-11 19:44:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 19:44:41,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 19:44:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 378 transitions. [2024-10-11 19:44:41,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5667166416791605 [2024-10-11 19:44:41,086 INFO L175 Difference]: Start difference. First operand has 251 places, 472 transitions, 5210 flow. Second operand 23 states and 378 transitions. [2024-10-11 19:44:41,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 2350 transitions, 23102 flow [2024-10-11 19:44:43,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 2350 transitions, 23088 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-11 19:44:43,421 INFO L231 Difference]: Finished difference. Result has 270 places, 466 transitions, 5364 flow [2024-10-11 19:44:43,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5112, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5364, PETRI_PLACES=270, PETRI_TRANSITIONS=466} [2024-10-11 19:44:43,422 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 243 predicate places. [2024-10-11 19:44:43,423 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 466 transitions, 5364 flow [2024-10-11 19:44:43,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.173913043478262) internal successors, (257), 23 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:43,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:44:43,423 INFO L204 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:44:43,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 19:44:43,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 19:44:43,624 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 19:44:43,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:44:43,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1879127983, now seen corresponding path program 10 times [2024-10-11 19:44:43,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:44:43,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526021797] [2024-10-11 19:44:43,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:44:43,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:44:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:44:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 975 proven. 96 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-10-11 19:44:44,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:44:44,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526021797] [2024-10-11 19:44:44,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526021797] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:44:44,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546392338] [2024-10-11 19:44:44,340 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:44:44,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:44:44,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:44:44,342 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:44:44,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 19:44:44,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:44:44,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:44:44,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 19:44:44,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:44:44,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1071 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-10-11 19:44:44,762 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:44:44,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546392338] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:44:44,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 19:44:44,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-10-11 19:44:44,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840238803] [2024-10-11 19:44:44,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:44:44,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 19:44:44,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:44:44,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 19:44:44,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-10-11 19:44:44,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-11 19:44:44,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 466 transitions, 5364 flow. Second operand has 23 states, 23 states have (on average 11.130434782608695) internal successors, (256), 23 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:44,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:44:44,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-11 19:44:44,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:44:48,191 INFO L124 PetriNetUnfolderBase]: 5380/12636 cut-off events. [2024-10-11 19:44:48,191 INFO L125 PetriNetUnfolderBase]: For 238365/238375 co-relation queries the response was YES. [2024-10-11 19:44:48,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67557 conditions, 12636 events. 5380/12636 cut-off events. For 238365/238375 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 84051 event pairs, 157 based on Foata normal form. 93/12632 useless extension candidates. Maximal degree in co-relation 67026. Up to 2163 conditions per place. [2024-10-11 19:44:48,277 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 0 selfloop transitions, 0 changer transitions 1711/1711 dead transitions. [2024-10-11 19:44:48,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1711 transitions, 18975 flow [2024-10-11 19:44:48,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 19:44:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 19:44:48,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 376 transitions. [2024-10-11 19:44:48,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5637181409295352 [2024-10-11 19:44:48,279 INFO L175 Difference]: Start difference. First operand has 270 places, 466 transitions, 5364 flow. Second operand 23 states and 376 transitions. [2024-10-11 19:44:48,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1711 transitions, 18975 flow [2024-10-11 19:44:48,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 1711 transitions, 18047 flow, removed 0 selfloop flow, removed 24 redundant places. [2024-10-11 19:44:48,946 INFO L231 Difference]: Finished difference. Result has 264 places, 0 transitions, 0 flow [2024-10-11 19:44:48,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5051, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=264, PETRI_TRANSITIONS=0} [2024-10-11 19:44:48,947 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 237 predicate places. [2024-10-11 19:44:48,947 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 0 transitions, 0 flow [2024-10-11 19:44:48,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.130434782608695) internal successors, (256), 23 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:44:48,950 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 3 remaining) [2024-10-11 19:44:48,950 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 3 remaining) [2024-10-11 19:44:48,950 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-11 19:44:48,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 19:44:49,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:44:49,151 INFO L407 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2024-10-11 19:44:49,155 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 19:44:49,155 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 19:44:49,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 07:44:49 BasicIcfg [2024-10-11 19:44:49,159 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 19:44:49,160 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 19:44:49,160 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 19:44:49,160 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 19:44:49,161 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:43:49" (3/4) ... [2024-10-11 19:44:49,163 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 19:44:49,167 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_function_mutex [2024-10-11 19:44:49,171 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2024-10-11 19:44:49,172 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-11 19:44:49,172 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-11 19:44:49,172 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 19:44:49,260 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 19:44:49,260 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 19:44:49,260 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 19:44:49,261 INFO L158 Benchmark]: Toolchain (without parser) took 61238.12ms. Allocated memory was 155.2MB in the beginning and 9.8GB in the end (delta: 9.6GB). Free memory was 99.3MB in the beginning and 8.2GB in the end (delta: -8.1GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2024-10-11 19:44:49,261 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 155.2MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:44:49,261 INFO L158 Benchmark]: CACSL2BoogieTranslator took 890.82ms. Allocated memory is still 155.2MB. Free memory was 98.8MB in the beginning and 119.2MB in the end (delta: -20.3MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2024-10-11 19:44:49,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.80ms. Allocated memory is still 155.2MB. Free memory was 118.4MB in the beginning and 116.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 19:44:49,262 INFO L158 Benchmark]: Boogie Preprocessor took 52.46ms. Allocated memory is still 155.2MB. Free memory was 116.3MB in the beginning and 114.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 19:44:49,262 INFO L158 Benchmark]: RCFGBuilder took 635.31ms. Allocated memory is still 155.2MB. Free memory was 114.2MB in the beginning and 87.7MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-11 19:44:49,262 INFO L158 Benchmark]: TraceAbstraction took 59468.52ms. Allocated memory was 155.2MB in the beginning and 9.8GB in the end (delta: 9.6GB). Free memory was 86.9MB in the beginning and 8.2GB in the end (delta: -8.1GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2024-10-11 19:44:49,263 INFO L158 Benchmark]: Witness Printer took 100.49ms. Allocated memory is still 9.8GB. Free memory was 8.2GB in the beginning and 8.2GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 19:44:49,264 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 155.2MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 890.82ms. Allocated memory is still 155.2MB. Free memory was 98.8MB in the beginning and 119.2MB in the end (delta: -20.3MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.80ms. Allocated memory is still 155.2MB. Free memory was 118.4MB in the beginning and 116.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.46ms. Allocated memory is still 155.2MB. Free memory was 116.3MB in the beginning and 114.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 635.31ms. Allocated memory is still 155.2MB. Free memory was 114.2MB in the beginning and 87.7MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 59468.52ms. Allocated memory was 155.2MB in the beginning and 9.8GB in the end (delta: 9.6GB). Free memory was 86.9MB in the beginning and 8.2GB in the end (delta: -8.1GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 100.49ms. Allocated memory is still 9.8GB. Free memory was 8.2GB in the beginning and 8.2GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1334]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 59.4s, OverallIterations: 12, TraceHistogramMax: 21, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 46.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1821 SdHoareTripleChecker+Valid, 8.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1806 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22769 IncrementalHoareTripleChecker+Invalid, 22822 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 0 mSDtfsCounter, 22769 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2020 GetRequests, 1790 SyntacticMatches, 9 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1563 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5364occurred in iteration=11, InterpolantAutomatonStates: 236, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 2306 NumberOfCodeBlocks, 2278 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 2975 ConstructedInterpolants, 0 QuantifiedInterpolants, 7448 SizeOfPredicates, 22 NumberOfNonLiveVariables, 4711 ConjunctsInSsa, 214 ConjunctsInUnsatCore, 28 InterpolantComputations, 5 PerfectInterpolantSequences, 12758/20839 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 19:44:49,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE