./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:48:17,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:48:17,742 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:48:17,746 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:48:17,748 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:48:17,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:48:17,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:48:17,777 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:48:17,778 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:48:17,779 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:48:17,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:48:17,780 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:48:17,781 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:48:17,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:48:17,782 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:48:17,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:48:17,785 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:48:17,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:48:17,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:48:17,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:48:17,786 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:48:17,787 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:48:17,787 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:48:17,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:48:17,788 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:48:17,788 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:48:17,789 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:48:17,789 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:48:17,789 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:48:17,789 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:48:17,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:48:17,791 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:48:17,791 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:48:17,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:48:17,792 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:48:17,792 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:48:17,792 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:48:17,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:48:17,793 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:48:17,793 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:48:17,793 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:48:17,794 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:48:17,794 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2024-11-09 10:48:18,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:48:18,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:48:18,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:48:18,092 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:48:18,093 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:48:18,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-11-09 10:48:19,624 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:48:19,821 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:48:19,822 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-11-09 10:48:19,830 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/331e2f353/9c750617099c4e1daffa795d57db1c22/FLAGd5bf1f863 [2024-11-09 10:48:19,849 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/331e2f353/9c750617099c4e1daffa795d57db1c22 [2024-11-09 10:48:19,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:48:19,854 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:48:19,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:48:19,858 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:48:19,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:48:19,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:48:19" (1/1) ... [2024-11-09 10:48:19,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1578124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:19, skipping insertion in model container [2024-11-09 10:48:19,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:48:19" (1/1) ... [2024-11-09 10:48:19,896 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:48:20,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:48:20,116 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:48:20,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:48:20,152 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:48:20,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:20 WrapperNode [2024-11-09 10:48:20,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:48:20,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:48:20,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:48:20,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:48:20,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:20" (1/1) ... [2024-11-09 10:48:20,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:20" (1/1) ... [2024-11-09 10:48:20,187 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2024-11-09 10:48:20,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:48:20,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:48:20,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:48:20,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:48:20,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:20" (1/1) ... [2024-11-09 10:48:20,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:20" (1/1) ... [2024-11-09 10:48:20,206 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:20" (1/1) ... [2024-11-09 10:48:20,224 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 10:48:20,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:20" (1/1) ... [2024-11-09 10:48:20,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:20" (1/1) ... [2024-11-09 10:48:20,232 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:20" (1/1) ... [2024-11-09 10:48:20,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:20" (1/1) ... [2024-11-09 10:48:20,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:20" (1/1) ... [2024-11-09 10:48:20,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:20" (1/1) ... [2024-11-09 10:48:20,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:48:20,245 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:48:20,245 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:48:20,245 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:48:20,246 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:20" (1/1) ... [2024-11-09 10:48:20,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:48:20,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:20,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 10:48:20,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 10:48:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:48:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:48:20,347 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:48:20,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:48:20,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:48:20,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 10:48:20,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 10:48:20,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:48:20,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:48:20,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:48:20,351 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:48:20,472 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:48:20,475 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:48:20,666 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:48:20,666 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:48:20,838 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:48:20,839 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 10:48:20,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:48:20 BoogieIcfgContainer [2024-11-09 10:48:20,839 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:48:20,841 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:48:20,841 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:48:20,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:48:20,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:48:19" (1/3) ... [2024-11-09 10:48:20,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42057bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:48:20, skipping insertion in model container [2024-11-09 10:48:20,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:20" (2/3) ... [2024-11-09 10:48:20,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42057bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:48:20, skipping insertion in model container [2024-11-09 10:48:20,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:48:20" (3/3) ... [2024-11-09 10:48:20,852 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2024-11-09 10:48:20,871 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:48:20,872 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 10:48:20,872 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:48:20,941 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 10:48:20,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2024-11-09 10:48:21,021 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2024-11-09 10:48:21,025 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 10:48:21,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 3/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-11-09 10:48:21,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2024-11-09 10:48:21,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2024-11-09 10:48:21,047 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:48:21,056 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;@29b61d59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:48:21,058 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 10:48:21,073 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:48:21,075 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-09 10:48:21,075 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 10:48:21,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:21,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:21,077 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:21,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:21,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1751895252, now seen corresponding path program 1 times [2024-11-09 10:48:21,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:21,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765429134] [2024-11-09 10:48:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:21,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:21,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:21,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765429134] [2024-11-09 10:48:21,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765429134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:21,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:21,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:48:21,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975216680] [2024-11-09 10:48:21,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:21,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:48:21,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:21,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:48:21,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:48:21,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:21,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:21,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:21,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:21,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:22,102 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2024-11-09 10:48:22,103 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-09 10:48:22,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1775 event pairs, 124 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2024-11-09 10:48:22,117 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2024-11-09 10:48:22,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2024-11-09 10:48:22,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:48:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:48:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-11-09 10:48:22,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 10:48:22,134 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 54 transitions. [2024-11-09 10:48:22,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2024-11-09 10:48:22,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 10:48:22,143 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2024-11-09 10:48:22,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2024-11-09 10:48:22,147 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2024-11-09 10:48:22,148 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2024-11-09 10:48:22,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:22,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:22,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:22,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:48:22,149 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:22,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:22,150 INFO L85 PathProgramCache]: Analyzing trace with hash 476691239, now seen corresponding path program 1 times [2024-11-09 10:48:22,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:22,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143806170] [2024-11-09 10:48:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:22,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:22,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:22,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143806170] [2024-11-09 10:48:22,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143806170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:22,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:22,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:48:22,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501508922] [2024-11-09 10:48:22,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:22,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:22,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:22,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:22,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:22,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:22,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:22,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:22,599 INFO L124 PetriNetUnfolderBase]: 520/743 cut-off events. [2024-11-09 10:48:22,600 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-09 10:48:22,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 743 events. 520/743 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2444 event pairs, 203 based on Foata normal form. 16/759 useless extension candidates. Maximal degree in co-relation 529. Up to 536 conditions per place. [2024-11-09 10:48:22,609 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 45 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-11-09 10:48:22,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 58 transitions, 287 flow [2024-11-09 10:48:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-11-09 10:48:22,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-11-09 10:48:22,613 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 5 states and 76 transitions. [2024-11-09 10:48:22,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 58 transitions, 287 flow [2024-11-09 10:48:22,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 58 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:48:22,617 INFO L231 Difference]: Finished difference. Result has 31 places, 34 transitions, 156 flow [2024-11-09 10:48:22,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=31, PETRI_TRANSITIONS=34} [2024-11-09 10:48:22,619 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-11-09 10:48:22,619 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 34 transitions, 156 flow [2024-11-09 10:48:22,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:22,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:22,620 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:22,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:48:22,621 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:22,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:22,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2146806399, now seen corresponding path program 2 times [2024-11-09 10:48:22,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:22,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076842825] [2024-11-09 10:48:22,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:22,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:22,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076842825] [2024-11-09 10:48:22,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076842825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093277379] [2024-11-09 10:48:22,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:22,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:22,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:22,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:22,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:48:22,851 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:22,852 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:22,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 10:48:22,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:22,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:22,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093277379] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:23,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:48:23,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 7 [2024-11-09 10:48:23,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853679329] [2024-11-09 10:48:23,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:23,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:48:23,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:23,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:48:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:48:23,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:23,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:23,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:23,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:23,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:23,195 INFO L124 PetriNetUnfolderBase]: 581/828 cut-off events. [2024-11-09 10:48:23,195 INFO L125 PetriNetUnfolderBase]: For 837/837 co-relation queries the response was YES. [2024-11-09 10:48:23,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2671 conditions, 828 events. 581/828 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2772 event pairs, 136 based on Foata normal form. 24/852 useless extension candidates. Maximal degree in co-relation 2009. Up to 484 conditions per place. [2024-11-09 10:48:23,202 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 55 selfloop transitions, 7 changer transitions 1/64 dead transitions. [2024-11-09 10:48:23,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 64 transitions, 402 flow [2024-11-09 10:48:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:48:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:48:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-11-09 10:48:23,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-11-09 10:48:23,204 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 156 flow. Second operand 4 states and 68 transitions. [2024-11-09 10:48:23,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 64 transitions, 402 flow [2024-11-09 10:48:23,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 64 transitions, 388 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-11-09 10:48:23,209 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 181 flow [2024-11-09 10:48:23,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2024-11-09 10:48:23,210 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-11-09 10:48:23,210 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 181 flow [2024-11-09 10:48:23,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:23,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:23,211 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:23,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:48:23,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:23,416 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:23,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:23,417 INFO L85 PathProgramCache]: Analyzing trace with hash 64190845, now seen corresponding path program 3 times [2024-11-09 10:48:23,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:23,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719024627] [2024-11-09 10:48:23,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:23,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:23,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:23,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719024627] [2024-11-09 10:48:23,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719024627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:23,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:23,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:48:23,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055124935] [2024-11-09 10:48:23,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:23,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:23,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:23,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:23,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:23,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:23,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:23,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:23,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:23,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:23,729 INFO L124 PetriNetUnfolderBase]: 706/997 cut-off events. [2024-11-09 10:48:23,729 INFO L125 PetriNetUnfolderBase]: For 1708/1708 co-relation queries the response was YES. [2024-11-09 10:48:23,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3486 conditions, 997 events. 706/997 cut-off events. For 1708/1708 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3466 event pairs, 240 based on Foata normal form. 16/1013 useless extension candidates. Maximal degree in co-relation 2498. Up to 729 conditions per place. [2024-11-09 10:48:23,738 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 53 selfloop transitions, 16 changer transitions 0/70 dead transitions. [2024-11-09 10:48:23,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 70 transitions, 484 flow [2024-11-09 10:48:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-11-09 10:48:23,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-09 10:48:23,741 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 181 flow. Second operand 5 states and 75 transitions. [2024-11-09 10:48:23,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 70 transitions, 484 flow [2024-11-09 10:48:23,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 70 transitions, 467 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-09 10:48:23,754 INFO L231 Difference]: Finished difference. Result has 42 places, 46 transitions, 300 flow [2024-11-09 10:48:23,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=42, PETRI_TRANSITIONS=46} [2024-11-09 10:48:23,756 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-11-09 10:48:23,756 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 300 flow [2024-11-09 10:48:23,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:23,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:23,757 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:23,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:48:23,758 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:23,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:23,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2144322713, now seen corresponding path program 4 times [2024-11-09 10:48:23,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:23,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326192077] [2024-11-09 10:48:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:23,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:23,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:23,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326192077] [2024-11-09 10:48:23,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326192077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:23,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:23,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:48:23,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524497422] [2024-11-09 10:48:23,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:23,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:23,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:23,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:23,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:23,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:23,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 300 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:23,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:23,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:23,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:24,130 INFO L124 PetriNetUnfolderBase]: 752/1079 cut-off events. [2024-11-09 10:48:24,131 INFO L125 PetriNetUnfolderBase]: For 2361/2361 co-relation queries the response was YES. [2024-11-09 10:48:24,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4520 conditions, 1079 events. 752/1079 cut-off events. For 2361/2361 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4020 event pairs, 91 based on Foata normal form. 84/1163 useless extension candidates. Maximal degree in co-relation 3245. Up to 535 conditions per place. [2024-11-09 10:48:24,140 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 66 selfloop transitions, 28 changer transitions 3/98 dead transitions. [2024-11-09 10:48:24,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 98 transitions, 764 flow [2024-11-09 10:48:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:48:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:48:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-11-09 10:48:24,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2024-11-09 10:48:24,142 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 300 flow. Second operand 7 states and 113 transitions. [2024-11-09 10:48:24,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 98 transitions, 764 flow [2024-11-09 10:48:24,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 98 transitions, 734 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-09 10:48:24,153 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 474 flow [2024-11-09 10:48:24,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=474, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2024-11-09 10:48:24,155 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-11-09 10:48:24,155 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 474 flow [2024-11-09 10:48:24,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:24,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:24,155 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:24,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:48:24,156 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:24,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:24,157 INFO L85 PathProgramCache]: Analyzing trace with hash -847259184, now seen corresponding path program 1 times [2024-11-09 10:48:24,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:24,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957541823] [2024-11-09 10:48:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:24,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:24,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:24,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957541823] [2024-11-09 10:48:24,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957541823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:24,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:24,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:48:24,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821495128] [2024-11-09 10:48:24,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:24,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:24,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:24,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:24,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:24,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:24,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 474 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:24,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:24,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:24,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:24,485 INFO L124 PetriNetUnfolderBase]: 745/1083 cut-off events. [2024-11-09 10:48:24,486 INFO L125 PetriNetUnfolderBase]: For 4169/4169 co-relation queries the response was YES. [2024-11-09 10:48:24,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 1083 events. 745/1083 cut-off events. For 4169/4169 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4081 event pairs, 192 based on Foata normal form. 35/1118 useless extension candidates. Maximal degree in co-relation 4271. Up to 660 conditions per place. [2024-11-09 10:48:24,495 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 48 selfloop transitions, 13 changer transitions 26/88 dead transitions. [2024-11-09 10:48:24,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 88 transitions, 774 flow [2024-11-09 10:48:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:24,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:24,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-11-09 10:48:24,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-09 10:48:24,498 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 474 flow. Second operand 5 states and 81 transitions. [2024-11-09 10:48:24,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 88 transitions, 774 flow [2024-11-09 10:48:24,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 766 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-09 10:48:24,515 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 441 flow [2024-11-09 10:48:24,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=441, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-11-09 10:48:24,517 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-11-09 10:48:24,517 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 441 flow [2024-11-09 10:48:24,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:24,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:24,518 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:24,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:48:24,518 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:24,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:24,519 INFO L85 PathProgramCache]: Analyzing trace with hash -442867849, now seen corresponding path program 5 times [2024-11-09 10:48:24,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:24,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698779364] [2024-11-09 10:48:24,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:24,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:24,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:24,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698779364] [2024-11-09 10:48:24,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698779364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:24,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:24,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:48:24,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879187779] [2024-11-09 10:48:24,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:24,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:24,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:24,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:24,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:24,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:24,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 441 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:24,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:24,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:24,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:24,802 INFO L124 PetriNetUnfolderBase]: 628/931 cut-off events. [2024-11-09 10:48:24,802 INFO L125 PetriNetUnfolderBase]: For 4310/4310 co-relation queries the response was YES. [2024-11-09 10:48:24,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 931 events. 628/931 cut-off events. For 4310/4310 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3472 event pairs, 154 based on Foata normal form. 42/973 useless extension candidates. Maximal degree in co-relation 3913. Up to 535 conditions per place. [2024-11-09 10:48:24,810 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 55 selfloop transitions, 14 changer transitions 11/81 dead transitions. [2024-11-09 10:48:24,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 754 flow [2024-11-09 10:48:24,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:24,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:24,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-11-09 10:48:24,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2024-11-09 10:48:24,813 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 441 flow. Second operand 5 states and 77 transitions. [2024-11-09 10:48:24,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 754 flow [2024-11-09 10:48:24,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 692 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-09 10:48:24,824 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 444 flow [2024-11-09 10:48:24,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=444, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-11-09 10:48:24,825 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-11-09 10:48:24,825 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 444 flow [2024-11-09 10:48:24,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:24,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:24,826 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:24,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:48:24,827 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:24,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:24,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1967052259, now seen corresponding path program 6 times [2024-11-09 10:48:24,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:24,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876656969] [2024-11-09 10:48:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:24,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:24,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:24,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876656969] [2024-11-09 10:48:24,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876656969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:24,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:24,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:48:24,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675276160] [2024-11-09 10:48:24,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:24,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:24,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:24,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:24,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:24,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:24,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 444 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:24,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:24,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:24,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:25,071 INFO L124 PetriNetUnfolderBase]: 659/974 cut-off events. [2024-11-09 10:48:25,071 INFO L125 PetriNetUnfolderBase]: For 5215/5215 co-relation queries the response was YES. [2024-11-09 10:48:25,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4592 conditions, 974 events. 659/974 cut-off events. For 5215/5215 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3556 event pairs, 244 based on Foata normal form. 16/990 useless extension candidates. Maximal degree in co-relation 4292. Up to 712 conditions per place. [2024-11-09 10:48:25,080 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 52 selfloop transitions, 22 changer transitions 4/79 dead transitions. [2024-11-09 10:48:25,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 79 transitions, 810 flow [2024-11-09 10:48:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:25,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-11-09 10:48:25,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-11-09 10:48:25,082 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 444 flow. Second operand 5 states and 69 transitions. [2024-11-09 10:48:25,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 79 transitions, 810 flow [2024-11-09 10:48:25,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 79 transitions, 757 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:25,093 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 580 flow [2024-11-09 10:48:25,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=580, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2024-11-09 10:48:25,094 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-11-09 10:48:25,094 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 580 flow [2024-11-09 10:48:25,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:25,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:25,095 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:25,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:48:25,095 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:25,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:25,095 INFO L85 PathProgramCache]: Analyzing trace with hash 442458791, now seen corresponding path program 7 times [2024-11-09 10:48:25,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:25,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697564500] [2024-11-09 10:48:25,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:25,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:25,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:25,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:25,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697564500] [2024-11-09 10:48:25,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697564500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:25,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547433207] [2024-11-09 10:48:25,161 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:48:25,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:25,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:25,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:25,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:48:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:25,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 10:48:25,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:25,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:25,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547433207] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:25,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:25,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 10:48:25,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715188930] [2024-11-09 10:48:25,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:25,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:48:25,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:25,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:48:25,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:48:25,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:25,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 580 flow. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:25,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:25,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:25,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:25,839 INFO L124 PetriNetUnfolderBase]: 946/1383 cut-off events. [2024-11-09 10:48:25,839 INFO L125 PetriNetUnfolderBase]: For 7124/7124 co-relation queries the response was YES. [2024-11-09 10:48:25,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6861 conditions, 1383 events. 946/1383 cut-off events. For 7124/7124 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5390 event pairs, 184 based on Foata normal form. 74/1457 useless extension candidates. Maximal degree in co-relation 6467. Up to 630 conditions per place. [2024-11-09 10:48:25,856 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 76 selfloop transitions, 74 changer transitions 2/153 dead transitions. [2024-11-09 10:48:25,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 153 transitions, 1604 flow [2024-11-09 10:48:25,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:48:25,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:48:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-11-09 10:48:25,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-11-09 10:48:25,859 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 580 flow. Second operand 12 states and 164 transitions. [2024-11-09 10:48:25,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 153 transitions, 1604 flow [2024-11-09 10:48:25,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 153 transitions, 1544 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-09 10:48:25,879 INFO L231 Difference]: Finished difference. Result has 74 places, 103 transitions, 1293 flow [2024-11-09 10:48:25,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1293, PETRI_PLACES=74, PETRI_TRANSITIONS=103} [2024-11-09 10:48:25,880 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-11-09 10:48:25,880 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 103 transitions, 1293 flow [2024-11-09 10:48:25,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:25,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:25,883 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:25,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:48:26,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 10:48:26,085 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:26,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:26,086 INFO L85 PathProgramCache]: Analyzing trace with hash -560455765, now seen corresponding path program 8 times [2024-11-09 10:48:26,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:26,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286642136] [2024-11-09 10:48:26,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:26,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:26,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:26,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286642136] [2024-11-09 10:48:26,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286642136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:26,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:26,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:48:26,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301817993] [2024-11-09 10:48:26,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:26,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:26,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:26,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:26,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:26,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:26,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 103 transitions, 1293 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:26,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:26,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:26,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:26,448 INFO L124 PetriNetUnfolderBase]: 933/1376 cut-off events. [2024-11-09 10:48:26,448 INFO L125 PetriNetUnfolderBase]: For 12219/12219 co-relation queries the response was YES. [2024-11-09 10:48:26,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8465 conditions, 1376 events. 933/1376 cut-off events. For 12219/12219 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5358 event pairs, 273 based on Foata normal form. 22/1398 useless extension candidates. Maximal degree in co-relation 7752. Up to 900 conditions per place. [2024-11-09 10:48:26,465 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 86 selfloop transitions, 22 changer transitions 12/121 dead transitions. [2024-11-09 10:48:26,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 121 transitions, 1694 flow [2024-11-09 10:48:26,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-11-09 10:48:26,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-11-09 10:48:26,466 INFO L175 Difference]: Start difference. First operand has 74 places, 103 transitions, 1293 flow. Second operand 5 states and 66 transitions. [2024-11-09 10:48:26,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 121 transitions, 1694 flow [2024-11-09 10:48:26,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 121 transitions, 1563 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:26,496 INFO L231 Difference]: Finished difference. Result has 77 places, 100 transitions, 1216 flow [2024-11-09 10:48:26,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1216, PETRI_PLACES=77, PETRI_TRANSITIONS=100} [2024-11-09 10:48:26,497 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-11-09 10:48:26,497 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 100 transitions, 1216 flow [2024-11-09 10:48:26,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:26,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:26,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:26,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 10:48:26,498 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:26,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:26,500 INFO L85 PathProgramCache]: Analyzing trace with hash 557123088, now seen corresponding path program 1 times [2024-11-09 10:48:26,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:26,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131286950] [2024-11-09 10:48:26,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:26,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:26,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:26,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131286950] [2024-11-09 10:48:26,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131286950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:26,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211019125] [2024-11-09 10:48:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:26,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:26,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:26,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:26,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:48:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:26,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:26,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:26,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:26,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211019125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:26,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:26,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-09 10:48:26,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10298472] [2024-11-09 10:48:26,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:26,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:48:26,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:26,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:48:26,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:48:26,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:26,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 100 transitions, 1216 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:26,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:26,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:26,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:26,999 INFO L124 PetriNetUnfolderBase]: 966/1386 cut-off events. [2024-11-09 10:48:26,999 INFO L125 PetriNetUnfolderBase]: For 11637/11637 co-relation queries the response was YES. [2024-11-09 10:48:27,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8394 conditions, 1386 events. 966/1386 cut-off events. For 11637/11637 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5225 event pairs, 221 based on Foata normal form. 38/1424 useless extension candidates. Maximal degree in co-relation 7693. Up to 844 conditions per place. [2024-11-09 10:48:27,016 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 84 selfloop transitions, 59 changer transitions 1/145 dead transitions. [2024-11-09 10:48:27,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 145 transitions, 1969 flow [2024-11-09 10:48:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:48:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:48:27,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-11-09 10:48:27,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-09 10:48:27,018 INFO L175 Difference]: Start difference. First operand has 77 places, 100 transitions, 1216 flow. Second operand 6 states and 87 transitions. [2024-11-09 10:48:27,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 145 transitions, 1969 flow [2024-11-09 10:48:27,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 145 transitions, 1871 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-09 10:48:27,074 INFO L231 Difference]: Finished difference. Result has 78 places, 115 transitions, 1515 flow [2024-11-09 10:48:27,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1515, PETRI_PLACES=78, PETRI_TRANSITIONS=115} [2024-11-09 10:48:27,077 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-11-09 10:48:27,077 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 115 transitions, 1515 flow [2024-11-09 10:48:27,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:27,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:27,077 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] [2024-11-09 10:48:27,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:27,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:27,282 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:27,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:27,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1437217960, now seen corresponding path program 1 times [2024-11-09 10:48:27,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:27,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834465622] [2024-11-09 10:48:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:27,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:27,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:27,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834465622] [2024-11-09 10:48:27,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834465622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:27,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240404119] [2024-11-09 10:48:27,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:27,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:27,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:27,477 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:27,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:48:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:27,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 10:48:27,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:27,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:28,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240404119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:28,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:28,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-11-09 10:48:28,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857714970] [2024-11-09 10:48:28,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:28,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:28,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:28,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:28,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:28,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:28,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 115 transitions, 1515 flow. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:28,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:28,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:28,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:28,794 INFO L124 PetriNetUnfolderBase]: 1456/2098 cut-off events. [2024-11-09 10:48:28,794 INFO L125 PetriNetUnfolderBase]: For 16963/16963 co-relation queries the response was YES. [2024-11-09 10:48:28,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12871 conditions, 2098 events. 1456/2098 cut-off events. For 16963/16963 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8428 event pairs, 154 based on Foata normal form. 2/2100 useless extension candidates. Maximal degree in co-relation 12074. Up to 1478 conditions per place. [2024-11-09 10:48:28,813 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 142 selfloop transitions, 61 changer transitions 2/206 dead transitions. [2024-11-09 10:48:28,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 206 transitions, 2681 flow [2024-11-09 10:48:28,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:48:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:48:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-11-09 10:48:28,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.588477366255144 [2024-11-09 10:48:28,815 INFO L175 Difference]: Start difference. First operand has 78 places, 115 transitions, 1515 flow. Second operand 9 states and 143 transitions. [2024-11-09 10:48:28,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 206 transitions, 2681 flow [2024-11-09 10:48:28,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 206 transitions, 2499 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-11-09 10:48:28,856 INFO L231 Difference]: Finished difference. Result has 84 places, 152 transitions, 2054 flow [2024-11-09 10:48:28,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2054, PETRI_PLACES=84, PETRI_TRANSITIONS=152} [2024-11-09 10:48:28,857 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-11-09 10:48:28,857 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 152 transitions, 2054 flow [2024-11-09 10:48:28,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:28,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:28,858 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] [2024-11-09 10:48:28,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 10:48:29,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:29,062 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:29,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:29,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1276024520, now seen corresponding path program 2 times [2024-11-09 10:48:29,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:29,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029228155] [2024-11-09 10:48:29,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:29,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:29,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:29,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029228155] [2024-11-09 10:48:29,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029228155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:29,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794478749] [2024-11-09 10:48:29,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:29,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:29,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:29,232 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:29,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:48:29,302 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:29,303 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:29,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 10:48:29,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:29,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:29,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794478749] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:29,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:29,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-11-09 10:48:29,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395391051] [2024-11-09 10:48:29,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:29,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:29,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:29,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:29,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:29,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:29,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 152 transitions, 2054 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:29,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:29,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:29,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:30,582 INFO L124 PetriNetUnfolderBase]: 1800/2598 cut-off events. [2024-11-09 10:48:30,583 INFO L125 PetriNetUnfolderBase]: For 24593/24593 co-relation queries the response was YES. [2024-11-09 10:48:30,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16741 conditions, 2598 events. 1800/2598 cut-off events. For 24593/24593 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10796 event pairs, 279 based on Foata normal form. 2/2600 useless extension candidates. Maximal degree in co-relation 16040. Up to 1967 conditions per place. [2024-11-09 10:48:30,609 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 158 selfloop transitions, 63 changer transitions 2/224 dead transitions. [2024-11-09 10:48:30,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 224 transitions, 3104 flow [2024-11-09 10:48:30,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:48:30,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:48:30,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-09 10:48:30,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-11-09 10:48:30,611 INFO L175 Difference]: Start difference. First operand has 84 places, 152 transitions, 2054 flow. Second operand 9 states and 140 transitions. [2024-11-09 10:48:30,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 224 transitions, 3104 flow [2024-11-09 10:48:30,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 224 transitions, 2904 flow, removed 81 selfloop flow, removed 2 redundant places. [2024-11-09 10:48:30,672 INFO L231 Difference]: Finished difference. Result has 93 places, 173 transitions, 2361 flow [2024-11-09 10:48:30,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2361, PETRI_PLACES=93, PETRI_TRANSITIONS=173} [2024-11-09 10:48:30,673 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-11-09 10:48:30,673 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 173 transitions, 2361 flow [2024-11-09 10:48:30,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:30,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:30,674 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] [2024-11-09 10:48:30,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:30,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 10:48:30,878 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:30,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:30,878 INFO L85 PathProgramCache]: Analyzing trace with hash 59592076, now seen corresponding path program 3 times [2024-11-09 10:48:30,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:30,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168625585] [2024-11-09 10:48:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:30,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:31,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:31,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168625585] [2024-11-09 10:48:31,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168625585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:31,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889541495] [2024-11-09 10:48:31,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:31,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:31,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:31,050 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:31,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:48:31,120 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:48:31,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:31,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 10:48:31,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:31,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889541495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:31,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:31,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-09 10:48:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954418917] [2024-11-09 10:48:31,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:31,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:48:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:48:31,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:48:31,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:31,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 173 transitions, 2361 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:31,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:31,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:31,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:32,442 INFO L124 PetriNetUnfolderBase]: 2212/3198 cut-off events. [2024-11-09 10:48:32,443 INFO L125 PetriNetUnfolderBase]: For 30153/30153 co-relation queries the response was YES. [2024-11-09 10:48:32,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20407 conditions, 3198 events. 2212/3198 cut-off events. For 30153/30153 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 13883 event pairs, 446 based on Foata normal form. 2/3200 useless extension candidates. Maximal degree in co-relation 19823. Up to 2670 conditions per place. [2024-11-09 10:48:32,479 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 198 selfloop transitions, 57 changer transitions 2/258 dead transitions. [2024-11-09 10:48:32,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 258 transitions, 3646 flow [2024-11-09 10:48:32,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:48:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:48:32,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-09 10:48:32,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-11-09 10:48:32,481 INFO L175 Difference]: Start difference. First operand has 93 places, 173 transitions, 2361 flow. Second operand 9 states and 140 transitions. [2024-11-09 10:48:32,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 258 transitions, 3646 flow [2024-11-09 10:48:32,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 258 transitions, 3469 flow, removed 63 selfloop flow, removed 2 redundant places. [2024-11-09 10:48:32,555 INFO L231 Difference]: Finished difference. Result has 103 places, 206 transitions, 2862 flow [2024-11-09 10:48:32,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2862, PETRI_PLACES=103, PETRI_TRANSITIONS=206} [2024-11-09 10:48:32,557 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-11-09 10:48:32,557 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 206 transitions, 2862 flow [2024-11-09 10:48:32,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:32,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:32,558 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] [2024-11-09 10:48:32,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 10:48:32,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:32,759 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:32,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:32,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1636981364, now seen corresponding path program 4 times [2024-11-09 10:48:32,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:32,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367889415] [2024-11-09 10:48:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:32,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:32,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:32,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367889415] [2024-11-09 10:48:32,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367889415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:32,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881249899] [2024-11-09 10:48:32,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:48:32,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:32,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:32,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:32,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 10:48:32,998 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:48:32,998 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:33,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 10:48:33,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:33,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:33,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881249899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:33,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:33,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-09 10:48:33,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081058998] [2024-11-09 10:48:33,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:33,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 10:48:33,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:33,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 10:48:33,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-09 10:48:33,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:33,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 206 transitions, 2862 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:33,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:33,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:33,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:34,241 INFO L124 PetriNetUnfolderBase]: 2452/3550 cut-off events. [2024-11-09 10:48:34,242 INFO L125 PetriNetUnfolderBase]: For 35723/35723 co-relation queries the response was YES. [2024-11-09 10:48:34,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23135 conditions, 3550 events. 2452/3550 cut-off events. For 35723/35723 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 15731 event pairs, 550 based on Foata normal form. 2/3552 useless extension candidates. Maximal degree in co-relation 22542. Up to 3104 conditions per place. [2024-11-09 10:48:34,339 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 213 selfloop transitions, 53 changer transitions 2/269 dead transitions. [2024-11-09 10:48:34,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 269 transitions, 4001 flow [2024-11-09 10:48:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:48:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:48:34,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-11-09 10:48:34,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5596707818930041 [2024-11-09 10:48:34,345 INFO L175 Difference]: Start difference. First operand has 103 places, 206 transitions, 2862 flow. Second operand 9 states and 136 transitions. [2024-11-09 10:48:34,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 269 transitions, 4001 flow [2024-11-09 10:48:34,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 269 transitions, 3773 flow, removed 102 selfloop flow, removed 1 redundant places. [2024-11-09 10:48:34,483 INFO L231 Difference]: Finished difference. Result has 113 places, 221 transitions, 3066 flow [2024-11-09 10:48:34,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3066, PETRI_PLACES=113, PETRI_TRANSITIONS=221} [2024-11-09 10:48:34,484 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-11-09 10:48:34,484 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 221 transitions, 3066 flow [2024-11-09 10:48:34,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:34,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:34,484 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] [2024-11-09 10:48:34,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 10:48:34,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:34,689 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:34,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:34,689 INFO L85 PathProgramCache]: Analyzing trace with hash 320976776, now seen corresponding path program 5 times [2024-11-09 10:48:34,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:34,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857633648] [2024-11-09 10:48:34,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:34,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:34,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:34,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:34,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857633648] [2024-11-09 10:48:34,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857633648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:34,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688377597] [2024-11-09 10:48:34,861 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:48:34,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:34,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:34,863 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:34,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 10:48:34,918 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:34,918 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:34,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 10:48:34,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:35,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:36,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688377597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:36,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:36,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-11-09 10:48:36,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346177772] [2024-11-09 10:48:36,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:36,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:36,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:36,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:36,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:36,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:36,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 221 transitions, 3066 flow. Second operand has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:36,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:36,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:36,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:36,929 INFO L124 PetriNetUnfolderBase]: 2876/4162 cut-off events. [2024-11-09 10:48:36,929 INFO L125 PetriNetUnfolderBase]: For 44740/44740 co-relation queries the response was YES. [2024-11-09 10:48:36,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27518 conditions, 4162 events. 2876/4162 cut-off events. For 44740/44740 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 19011 event pairs, 681 based on Foata normal form. 2/4164 useless extension candidates. Maximal degree in co-relation 26881. Up to 3629 conditions per place. [2024-11-09 10:48:36,978 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 241 selfloop transitions, 60 changer transitions 2/304 dead transitions. [2024-11-09 10:48:36,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 304 transitions, 4638 flow [2024-11-09 10:48:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:48:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:48:36,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-11-09 10:48:36,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-09 10:48:36,980 INFO L175 Difference]: Start difference. First operand has 113 places, 221 transitions, 3066 flow. Second operand 9 states and 135 transitions. [2024-11-09 10:48:36,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 304 transitions, 4638 flow [2024-11-09 10:48:37,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 304 transitions, 4432 flow, removed 81 selfloop flow, removed 2 redundant places. [2024-11-09 10:48:37,079 INFO L231 Difference]: Finished difference. Result has 123 places, 257 transitions, 3713 flow [2024-11-09 10:48:37,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3713, PETRI_PLACES=123, PETRI_TRANSITIONS=257} [2024-11-09 10:48:37,080 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-11-09 10:48:37,080 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 257 transitions, 3713 flow [2024-11-09 10:48:37,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:37,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:37,080 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] [2024-11-09 10:48:37,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 10:48:37,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 10:48:37,281 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:37,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:37,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1673613192, now seen corresponding path program 6 times [2024-11-09 10:48:37,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:37,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123699377] [2024-11-09 10:48:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:37,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:37,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:37,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123699377] [2024-11-09 10:48:37,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123699377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:37,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191635884] [2024-11-09 10:48:37,474 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:48:37,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:37,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:37,476 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:37,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 10:48:37,542 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 10:48:37,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:37,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 10:48:37,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:37,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:39,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191635884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:39,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:39,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-09 10:48:39,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483231841] [2024-11-09 10:48:39,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:39,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:48:39,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:39,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:48:39,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:48:39,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:39,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 257 transitions, 3713 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:39,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:39,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:39,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:39,836 INFO L124 PetriNetUnfolderBase]: 3116/4514 cut-off events. [2024-11-09 10:48:39,837 INFO L125 PetriNetUnfolderBase]: For 51269/51269 co-relation queries the response was YES. [2024-11-09 10:48:39,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30513 conditions, 4514 events. 3116/4514 cut-off events. For 51269/51269 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 20996 event pairs, 787 based on Foata normal form. 2/4516 useless extension candidates. Maximal degree in co-relation 29843. Up to 4085 conditions per place. [2024-11-09 10:48:39,907 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 261 selfloop transitions, 54 changer transitions 2/318 dead transitions. [2024-11-09 10:48:39,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 318 transitions, 5040 flow [2024-11-09 10:48:39,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:48:39,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:48:39,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-11-09 10:48:39,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.551440329218107 [2024-11-09 10:48:39,909 INFO L175 Difference]: Start difference. First operand has 123 places, 257 transitions, 3713 flow. Second operand 9 states and 134 transitions. [2024-11-09 10:48:39,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 318 transitions, 5040 flow [2024-11-09 10:48:40,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 318 transitions, 4740 flow, removed 138 selfloop flow, removed 1 redundant places. [2024-11-09 10:48:40,101 INFO L231 Difference]: Finished difference. Result has 133 places, 272 transitions, 3907 flow [2024-11-09 10:48:40,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3413, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3907, PETRI_PLACES=133, PETRI_TRANSITIONS=272} [2024-11-09 10:48:40,101 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-11-09 10:48:40,102 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 272 transitions, 3907 flow [2024-11-09 10:48:40,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:40,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:40,102 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:40,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 10:48:40,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 10:48:40,303 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:40,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:40,303 INFO L85 PathProgramCache]: Analyzing trace with hash 313622787, now seen corresponding path program 7 times [2024-11-09 10:48:40,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:40,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138921255] [2024-11-09 10:48:40,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:40,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:48:40,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:40,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138921255] [2024-11-09 10:48:40,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138921255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:40,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80779687] [2024-11-09 10:48:40,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:48:40,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:40,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:40,438 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:40,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 10:48:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:40,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:48:40,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:48:40,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:48:40,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80779687] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:40,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:40,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:48:40,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819156169] [2024-11-09 10:48:40,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:40,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:40,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:40,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:40,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:40,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:40,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 272 transitions, 3907 flow. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:40,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:40,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:40,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:41,824 INFO L124 PetriNetUnfolderBase]: 4837/6868 cut-off events. [2024-11-09 10:48:41,825 INFO L125 PetriNetUnfolderBase]: For 84374/84374 co-relation queries the response was YES. [2024-11-09 10:48:41,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45961 conditions, 6868 events. 4837/6868 cut-off events. For 84374/84374 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 32861 event pairs, 466 based on Foata normal form. 48/6916 useless extension candidates. Maximal degree in co-relation 44580. Up to 2243 conditions per place. [2024-11-09 10:48:41,890 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 537 selfloop transitions, 134 changer transitions 0/672 dead transitions. [2024-11-09 10:48:41,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 672 transitions, 10650 flow [2024-11-09 10:48:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:48:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 10:48:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2024-11-09 10:48:41,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2024-11-09 10:48:41,892 INFO L175 Difference]: Start difference. First operand has 133 places, 272 transitions, 3907 flow. Second operand 13 states and 204 transitions. [2024-11-09 10:48:41,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 672 transitions, 10650 flow [2024-11-09 10:48:42,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 672 transitions, 9942 flow, removed 330 selfloop flow, removed 2 redundant places. [2024-11-09 10:48:42,177 INFO L231 Difference]: Finished difference. Result has 151 places, 348 transitions, 5175 flow [2024-11-09 10:48:42,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3638, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5175, PETRI_PLACES=151, PETRI_TRANSITIONS=348} [2024-11-09 10:48:42,178 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-11-09 10:48:42,178 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 348 transitions, 5175 flow [2024-11-09 10:48:42,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:42,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:42,179 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:42,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 10:48:42,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 10:48:42,379 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:42,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:42,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1782818654, now seen corresponding path program 8 times [2024-11-09 10:48:42,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:42,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609682078] [2024-11-09 10:48:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:42,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:48:42,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:42,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609682078] [2024-11-09 10:48:42,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609682078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:42,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961574974] [2024-11-09 10:48:42,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:42,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:42,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:42,543 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:42,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 10:48:42,605 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:42,605 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:42,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:48:42,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:42,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:42,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:42,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961574974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:42,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:42,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-09 10:48:42,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430721092] [2024-11-09 10:48:42,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:42,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 10:48:42,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:42,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 10:48:42,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:48:42,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:42,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 348 transitions, 5175 flow. Second operand has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:42,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:42,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:42,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:45,809 INFO L124 PetriNetUnfolderBase]: 6514/9210 cut-off events. [2024-11-09 10:48:45,809 INFO L125 PetriNetUnfolderBase]: For 127524/127524 co-relation queries the response was YES. [2024-11-09 10:48:45,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69436 conditions, 9210 events. 6514/9210 cut-off events. For 127524/127524 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 45615 event pairs, 340 based on Foata normal form. 142/9352 useless extension candidates. Maximal degree in co-relation 67061. Up to 3035 conditions per place. [2024-11-09 10:48:45,975 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 604 selfloop transitions, 492 changer transitions 0/1097 dead transitions. [2024-11-09 10:48:45,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1097 transitions, 17747 flow [2024-11-09 10:48:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-09 10:48:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-11-09 10:48:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 678 transitions. [2024-11-09 10:48:45,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45656565656565656 [2024-11-09 10:48:45,979 INFO L175 Difference]: Start difference. First operand has 151 places, 348 transitions, 5175 flow. Second operand 55 states and 678 transitions. [2024-11-09 10:48:45,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1097 transitions, 17747 flow [2024-11-09 10:48:46,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1097 transitions, 17037 flow, removed 302 selfloop flow, removed 1 redundant places. [2024-11-09 10:48:46,251 INFO L231 Difference]: Finished difference. Result has 229 places, 678 transitions, 11611 flow [2024-11-09 10:48:46,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4877, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=11611, PETRI_PLACES=229, PETRI_TRANSITIONS=678} [2024-11-09 10:48:46,252 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-11-09 10:48:46,252 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 678 transitions, 11611 flow [2024-11-09 10:48:46,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:46,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:46,252 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:46,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:46,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:46,453 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:46,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:46,453 INFO L85 PathProgramCache]: Analyzing trace with hash 900764061, now seen corresponding path program 9 times [2024-11-09 10:48:46,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:46,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838140322] [2024-11-09 10:48:46,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:46,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:46,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:46,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:46,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838140322] [2024-11-09 10:48:46,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838140322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:46,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174084282] [2024-11-09 10:48:46,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:46,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:46,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:46,587 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:46,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 10:48:46,654 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 10:48:46,655 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:46,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:48:46,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:46,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:46,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174084282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:46,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:46,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-09 10:48:46,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904357433] [2024-11-09 10:48:46,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:46,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:48:46,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:46,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:48:46,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:48:46,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:46,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 678 transitions, 11611 flow. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:46,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:46,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:46,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:49,368 INFO L124 PetriNetUnfolderBase]: 6754/9618 cut-off events. [2024-11-09 10:48:49,369 INFO L125 PetriNetUnfolderBase]: For 288191/288191 co-relation queries the response was YES. [2024-11-09 10:48:49,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86887 conditions, 9618 events. 6754/9618 cut-off events. For 288191/288191 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 48799 event pairs, 1403 based on Foata normal form. 112/9730 useless extension candidates. Maximal degree in co-relation 86284. Up to 4680 conditions per place. [2024-11-09 10:48:49,471 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 517 selfloop transitions, 351 changer transitions 6/875 dead transitions. [2024-11-09 10:48:49,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 875 transitions, 16390 flow [2024-11-09 10:48:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 10:48:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 10:48:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 201 transitions. [2024-11-09 10:48:49,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-11-09 10:48:49,473 INFO L175 Difference]: Start difference. First operand has 229 places, 678 transitions, 11611 flow. Second operand 15 states and 201 transitions. [2024-11-09 10:48:49,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 875 transitions, 16390 flow [2024-11-09 10:48:50,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 875 transitions, 14068 flow, removed 938 selfloop flow, removed 4 redundant places. [2024-11-09 10:48:50,808 INFO L231 Difference]: Finished difference. Result has 245 places, 739 transitions, 11487 flow [2024-11-09 10:48:50,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9360, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=11487, PETRI_PLACES=245, PETRI_TRANSITIONS=739} [2024-11-09 10:48:50,809 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-11-09 10:48:50,809 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 739 transitions, 11487 flow [2024-11-09 10:48:50,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:50,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:50,809 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:50,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 10:48:51,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:51,010 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:51,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:51,010 INFO L85 PathProgramCache]: Analyzing trace with hash -146329803, now seen corresponding path program 10 times [2024-11-09 10:48:51,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:51,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043807849] [2024-11-09 10:48:51,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:51,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:48:51,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:51,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043807849] [2024-11-09 10:48:51,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043807849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:51,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734380293] [2024-11-09 10:48:51,129 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:48:51,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:51,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:51,131 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:51,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 10:48:51,189 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:48:51,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:51,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:48:51,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:48:51,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:48:51,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734380293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:51,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:51,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:48:51,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584465981] [2024-11-09 10:48:51,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:51,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:51,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:51,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:51,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:51,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:51,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 739 transitions, 11487 flow. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:51,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:51,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:51,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:53,882 INFO L124 PetriNetUnfolderBase]: 7092/10202 cut-off events. [2024-11-09 10:48:53,883 INFO L125 PetriNetUnfolderBase]: For 405011/405011 co-relation queries the response was YES. [2024-11-09 10:48:53,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92083 conditions, 10202 events. 7092/10202 cut-off events. For 405011/405011 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 53561 event pairs, 1741 based on Foata normal form. 172/10372 useless extension candidates. Maximal degree in co-relation 91632. Up to 5947 conditions per place. [2024-11-09 10:48:53,999 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 663 selfloop transitions, 250 changer transitions 39/953 dead transitions. [2024-11-09 10:48:53,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 953 transitions, 16972 flow [2024-11-09 10:48:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:48:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:48:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-11-09 10:48:54,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-11-09 10:48:54,000 INFO L175 Difference]: Start difference. First operand has 245 places, 739 transitions, 11487 flow. Second operand 8 states and 123 transitions. [2024-11-09 10:48:54,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 953 transitions, 16972 flow [2024-11-09 10:48:56,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 953 transitions, 16172 flow, removed 281 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:56,067 INFO L231 Difference]: Finished difference. Result has 253 places, 798 transitions, 12919 flow [2024-11-09 10:48:56,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=11029, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12919, PETRI_PLACES=253, PETRI_TRANSITIONS=798} [2024-11-09 10:48:56,068 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-11-09 10:48:56,069 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 798 transitions, 12919 flow [2024-11-09 10:48:56,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:56,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:56,069 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:56,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 10:48:56,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-09 10:48:56,270 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:48:56,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:56,270 INFO L85 PathProgramCache]: Analyzing trace with hash 633348975, now seen corresponding path program 11 times [2024-11-09 10:48:56,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:56,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706182269] [2024-11-09 10:48:56,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:56,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:56,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:56,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706182269] [2024-11-09 10:48:56,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706182269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:56,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396255133] [2024-11-09 10:48:56,431 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:48:56,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:56,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:56,434 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:56,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 10:48:56,483 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:48:56,484 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:56,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:48:56,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:56,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:56,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396255133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:56,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:56,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-09 10:48:56,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078238843] [2024-11-09 10:48:56,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:56,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:48:56,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:56,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:48:56,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-09 10:48:56,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:48:56,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 798 transitions, 12919 flow. Second operand has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:56,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:56,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:48:56,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:59,677 INFO L124 PetriNetUnfolderBase]: 8223/11640 cut-off events. [2024-11-09 10:48:59,677 INFO L125 PetriNetUnfolderBase]: For 504908/504908 co-relation queries the response was YES. [2024-11-09 10:48:59,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112897 conditions, 11640 events. 8223/11640 cut-off events. For 504908/504908 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 60476 event pairs, 1463 based on Foata normal form. 86/11724 useless extension candidates. Maximal degree in co-relation 112443. Up to 6709 conditions per place. [2024-11-09 10:48:59,884 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 636 selfloop transitions, 656 changer transitions 0/1293 dead transitions. [2024-11-09 10:48:59,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1293 transitions, 25287 flow [2024-11-09 10:48:59,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 10:48:59,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-09 10:48:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 405 transitions. [2024-11-09 10:48:59,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-11-09 10:48:59,887 INFO L175 Difference]: Start difference. First operand has 253 places, 798 transitions, 12919 flow. Second operand 32 states and 405 transitions. [2024-11-09 10:48:59,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1293 transitions, 25287 flow [2024-11-09 10:49:03,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 1293 transitions, 24396 flow, removed 369 selfloop flow, removed 1 redundant places. [2024-11-09 10:49:03,703 INFO L231 Difference]: Finished difference. Result has 291 places, 1091 transitions, 21514 flow [2024-11-09 10:49:03,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=12660, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=21514, PETRI_PLACES=291, PETRI_TRANSITIONS=1091} [2024-11-09 10:49:03,704 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-11-09 10:49:03,704 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 1091 transitions, 21514 flow [2024-11-09 10:49:03,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:03,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:03,704 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:03,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 10:49:03,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:03,905 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:03,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:03,906 INFO L85 PathProgramCache]: Analyzing trace with hash -2086858427, now seen corresponding path program 12 times [2024-11-09 10:49:03,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:03,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259060361] [2024-11-09 10:49:03,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:03,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:04,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:04,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259060361] [2024-11-09 10:49:04,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259060361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:04,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989557925] [2024-11-09 10:49:04,055 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:49:04,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:04,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:04,057 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:49:04,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 10:49:04,118 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 10:49:04,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:04,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:49:04,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:04,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:04,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:04,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989557925] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:04,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:04,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-09 10:49:04,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974070551] [2024-11-09 10:49:04,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:04,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:49:04,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:04,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:49:04,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-09 10:49:04,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:49:04,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 1091 transitions, 21514 flow. Second operand has 17 states, 17 states have (on average 7.705882352941177) internal successors, (131), 17 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:04,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:04,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:49:04,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:09,981 INFO L124 PetriNetUnfolderBase]: 10050/14126 cut-off events. [2024-11-09 10:49:09,982 INFO L125 PetriNetUnfolderBase]: For 781193/781193 co-relation queries the response was YES. [2024-11-09 10:49:10,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151248 conditions, 14126 events. 10050/14126 cut-off events. For 781193/781193 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 74695 event pairs, 1308 based on Foata normal form. 466/14588 useless extension candidates. Maximal degree in co-relation 150613. Up to 6234 conditions per place. [2024-11-09 10:49:10,273 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 715 selfloop transitions, 1278 changer transitions 4/1998 dead transitions. [2024-11-09 10:49:10,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1998 transitions, 46799 flow [2024-11-09 10:49:10,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-09 10:49:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-11-09 10:49:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 852 transitions. [2024-11-09 10:49:10,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2024-11-09 10:49:10,278 INFO L175 Difference]: Start difference. First operand has 291 places, 1091 transitions, 21514 flow. Second operand 72 states and 852 transitions. [2024-11-09 10:49:10,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1998 transitions, 46799 flow [2024-11-09 10:49:19,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 1998 transitions, 36056 flow, removed 5002 selfloop flow, removed 4 redundant places. [2024-11-09 10:49:19,865 INFO L231 Difference]: Finished difference. Result has 386 places, 1704 transitions, 33057 flow [2024-11-09 10:49:19,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=16995, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=701, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=33057, PETRI_PLACES=386, PETRI_TRANSITIONS=1704} [2024-11-09 10:49:19,867 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-11-09 10:49:19,867 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 1704 transitions, 33057 flow [2024-11-09 10:49:19,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.705882352941177) internal successors, (131), 17 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:19,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:19,867 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:19,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 10:49:20,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:20,068 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:20,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:20,068 INFO L85 PathProgramCache]: Analyzing trace with hash 818812044, now seen corresponding path program 13 times [2024-11-09 10:49:20,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:20,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317844492] [2024-11-09 10:49:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:20,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:49:20,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:20,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317844492] [2024-11-09 10:49:20,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317844492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:20,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545345652] [2024-11-09 10:49:20,182 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:49:20,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:20,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:20,184 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:49:20,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 10:49:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:20,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:49:20,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:49:20,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:49:20,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545345652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:20,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:20,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:49:20,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517430860] [2024-11-09 10:49:20,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:20,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:49:20,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:20,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:49:20,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:49:20,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:49:20,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 1704 transitions, 33057 flow. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:20,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:20,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:49:20,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:26,482 INFO L124 PetriNetUnfolderBase]: 10089/14310 cut-off events. [2024-11-09 10:49:26,482 INFO L125 PetriNetUnfolderBase]: For 432552/432552 co-relation queries the response was YES. [2024-11-09 10:49:26,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138292 conditions, 14310 events. 10089/14310 cut-off events. For 432552/432552 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 77699 event pairs, 1716 based on Foata normal form. 237/14533 useless extension candidates. Maximal degree in co-relation 137621. Up to 8441 conditions per place. [2024-11-09 10:49:26,917 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 1330 selfloop transitions, 417 changer transitions 94/1842 dead transitions. [2024-11-09 10:49:26,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 1842 transitions, 39144 flow [2024-11-09 10:49:26,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:49:26,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:49:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-11-09 10:49:26,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-09 10:49:26,919 INFO L175 Difference]: Start difference. First operand has 386 places, 1704 transitions, 33057 flow. Second operand 8 states and 126 transitions. [2024-11-09 10:49:26,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 1842 transitions, 39144 flow [2024-11-09 10:49:31,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 1842 transitions, 32459 flow, removed 3043 selfloop flow, removed 8 redundant places. [2024-11-09 10:49:31,855 INFO L231 Difference]: Finished difference. Result has 388 places, 1677 transitions, 27308 flow [2024-11-09 10:49:31,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=26515, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27308, PETRI_PLACES=388, PETRI_TRANSITIONS=1677} [2024-11-09 10:49:31,858 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-11-09 10:49:31,858 INFO L471 AbstractCegarLoop]: Abstraction has has 388 places, 1677 transitions, 27308 flow [2024-11-09 10:49:31,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:31,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:31,859 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:31,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 10:49:32,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 10:49:32,059 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:32,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:32,060 INFO L85 PathProgramCache]: Analyzing trace with hash -161483671, now seen corresponding path program 14 times [2024-11-09 10:49:32,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:32,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605602065] [2024-11-09 10:49:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:32,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:32,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:32,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605602065] [2024-11-09 10:49:32,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605602065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:32,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832966101] [2024-11-09 10:49:32,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:49:32,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:32,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:32,160 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:49:32,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 10:49:32,218 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:49:32,219 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:32,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:49:32,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:49:32,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:32,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:49:32,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832966101] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:32,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:32,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-11-09 10:49:32,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553197184] [2024-11-09 10:49:32,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:32,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:49:32,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:32,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:49:32,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:49:32,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-09 10:49:32,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 1677 transitions, 27308 flow. Second operand has 15 states, 15 states have (on average 8.0) internal successors, (120), 15 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:32,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:32,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-09 10:49:32,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:39,202 INFO L124 PetriNetUnfolderBase]: 11655/16410 cut-off events. [2024-11-09 10:49:39,202 INFO L125 PetriNetUnfolderBase]: For 428951/428951 co-relation queries the response was YES. [2024-11-09 10:49:39,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151649 conditions, 16410 events. 11655/16410 cut-off events. For 428951/428951 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 90425 event pairs, 608 based on Foata normal form. 474/16870 useless extension candidates. Maximal degree in co-relation 151048. Up to 5065 conditions per place.