./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.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 206fc494d359c55f00dca0f227d0ffa61103c97cbe34d3166496eff2224a478a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:18:36,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:18:36,733 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:18:36,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:18:36,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:18:36,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:18:36,758 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:18:36,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:18:36,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:18:36,759 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:18:36,759 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:18:36,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:18:36,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:18:36,760 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:18:36,761 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:18:36,761 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:18:36,761 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:18:36,761 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:18:36,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:18:36,762 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:18:36,762 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:18:36,763 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:18:36,763 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:18:36,763 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:18:36,763 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:18:36,764 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:18:36,764 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:18:36,764 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:18:36,764 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:18:36,765 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:18:36,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:18:36,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:18:36,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:18:36,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:18:36,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:18:36,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:18:36,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:18:36,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:18:36,767 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:18:36,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:18:36,767 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:18:36,767 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:18:36,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 206fc494d359c55f00dca0f227d0ffa61103c97cbe34d3166496eff2224a478a [2024-10-24 19:18:36,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:18:36,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:18:36,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:18:36,999 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:18:37,000 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:18:37,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-10-24 19:18:38,252 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:18:38,394 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:18:38,395 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-10-24 19:18:38,401 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d06f0cb6/6568029d8e124cf49e90a51749f8eab9/FLAGa6b16af73 [2024-10-24 19:18:38,811 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d06f0cb6/6568029d8e124cf49e90a51749f8eab9 [2024-10-24 19:18:38,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:18:38,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:18:38,817 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:18:38,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:18:38,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:18:38,822 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:18:38" (1/1) ... [2024-10-24 19:18:38,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e848c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:38, skipping insertion in model container [2024-10-24 19:18:38,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:18:38" (1/1) ... [2024-10-24 19:18:38,843 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:18:39,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:18:39,024 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:18:39,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:18:39,077 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:18:39,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:39 WrapperNode [2024-10-24 19:18:39,078 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:18:39,079 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:18:39,079 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:18:39,079 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:18:39,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:39" (1/1) ... [2024-10-24 19:18:39,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:39" (1/1) ... [2024-10-24 19:18:39,117 INFO L138 Inliner]: procedures = 20, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2024-10-24 19:18:39,117 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:18:39,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:18:39,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:18:39,118 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:18:39,126 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:39" (1/1) ... [2024-10-24 19:18:39,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:39" (1/1) ... [2024-10-24 19:18:39,128 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:39" (1/1) ... [2024-10-24 19:18:39,138 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 19:18:39,139 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:39" (1/1) ... [2024-10-24 19:18:39,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:39" (1/1) ... [2024-10-24 19:18:39,143 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:39" (1/1) ... [2024-10-24 19:18:39,147 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:39" (1/1) ... [2024-10-24 19:18:39,149 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:39" (1/1) ... [2024-10-24 19:18:39,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:39" (1/1) ... [2024-10-24 19:18:39,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:18:39,152 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:18:39,152 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:18:39,152 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:18:39,153 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:39" (1/1) ... [2024-10-24 19:18:39,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:18:39,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:18:39,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 19:18:39,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 19:18:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:18:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:18:39,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:18:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:18:39,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:18:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 19:18:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 19:18:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 19:18:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:18:39,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:18:39,240 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:18:39,325 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:18:39,328 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:18:39,561 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:18:39,561 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:18:39,669 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:18:39,670 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 19:18:39,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:18:39 BoogieIcfgContainer [2024-10-24 19:18:39,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:18:39,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:18:39,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:18:39,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:18:39,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:18:38" (1/3) ... [2024-10-24 19:18:39,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517b19fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:18:39, skipping insertion in model container [2024-10-24 19:18:39,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:18:39" (2/3) ... [2024-10-24 19:18:39,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517b19fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:18:39, skipping insertion in model container [2024-10-24 19:18:39,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:18:39" (3/3) ... [2024-10-24 19:18:39,682 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2024-10-24 19:18:39,697 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:18:39,697 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 19:18:39,698 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:18:39,747 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 19:18:39,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 74 flow [2024-10-24 19:18:39,810 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-10-24 19:18:39,810 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:18:39,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 4/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-10-24 19:18:39,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 74 flow [2024-10-24 19:18:39,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 66 flow [2024-10-24 19:18:39,824 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:18:39,830 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;@19804e80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:18:39,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 19:18:39,845 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:18:39,845 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-10-24 19:18:39,846 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:18:39,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:39,846 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:39,847 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:18:39,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:39,852 INFO L85 PathProgramCache]: Analyzing trace with hash 146397191, now seen corresponding path program 1 times [2024-10-24 19:18:39,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:39,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672161721] [2024-10-24 19:18:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:39,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:40,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:18:40,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:40,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672161721] [2024-10-24 19:18:40,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672161721] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:18:40,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:18:40,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:18:40,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875658844] [2024-10-24 19:18:40,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:18:40,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:18:40,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:40,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:18:40,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:18:40,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-24 19:18:40,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:40,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:40,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-24 19:18:40,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:40,178 INFO L124 PetriNetUnfolderBase]: 130/252 cut-off events. [2024-10-24 19:18:40,178 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-24 19:18:40,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 252 events. 130/252 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 949 event pairs, 12 based on Foata normal form. 2/218 useless extension candidates. Maximal degree in co-relation 404. Up to 165 conditions per place. [2024-10-24 19:18:40,183 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 21 selfloop transitions, 5 changer transitions 1/36 dead transitions. [2024-10-24 19:18:40,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 36 transitions, 147 flow [2024-10-24 19:18:40,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:18:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:18:40,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-10-24 19:18:40,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-10-24 19:18:40,195 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 66 flow. Second operand 3 states and 65 transitions. [2024-10-24 19:18:40,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 36 transitions, 147 flow [2024-10-24 19:18:40,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 36 transitions, 133 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:18:40,200 INFO L231 Difference]: Finished difference. Result has 27 places, 29 transitions, 87 flow [2024-10-24 19:18:40,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=27, PETRI_TRANSITIONS=29} [2024-10-24 19:18:40,204 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2024-10-24 19:18:40,205 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 29 transitions, 87 flow [2024-10-24 19:18:40,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:40,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:40,205 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:40,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 19:18:40,206 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:18:40,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:40,206 INFO L85 PathProgramCache]: Analyzing trace with hash -158258593, now seen corresponding path program 1 times [2024-10-24 19:18:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:40,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406692397] [2024-10-24 19:18:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:40,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:18:40,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:40,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406692397] [2024-10-24 19:18:40,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406692397] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:18:40,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:18:40,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:18:40,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638101369] [2024-10-24 19:18:40,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:18:40,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:18:40,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:40,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:18:40,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:18:40,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 30 [2024-10-24 19:18:40,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 29 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:40,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:40,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 30 [2024-10-24 19:18:40,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:40,467 INFO L124 PetriNetUnfolderBase]: 107/225 cut-off events. [2024-10-24 19:18:40,467 INFO L125 PetriNetUnfolderBase]: For 52/76 co-relation queries the response was YES. [2024-10-24 19:18:40,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 225 events. 107/225 cut-off events. For 52/76 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 857 event pairs, 12 based on Foata normal form. 9/199 useless extension candidates. Maximal degree in co-relation 213. Up to 83 conditions per place. [2024-10-24 19:18:40,470 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 21 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-10-24 19:18:40,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 36 transitions, 152 flow [2024-10-24 19:18:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:18:40,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:18:40,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-10-24 19:18:40,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2024-10-24 19:18:40,473 INFO L175 Difference]: Start difference. First operand has 27 places, 29 transitions, 87 flow. Second operand 3 states and 64 transitions. [2024-10-24 19:18:40,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 36 transitions, 152 flow [2024-10-24 19:18:40,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 145 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 19:18:40,475 INFO L231 Difference]: Finished difference. Result has 29 places, 30 transitions, 92 flow [2024-10-24 19:18:40,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=29, PETRI_TRANSITIONS=30} [2024-10-24 19:18:40,479 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2024-10-24 19:18:40,479 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 30 transitions, 92 flow [2024-10-24 19:18:40,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:40,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:40,479 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:40,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 19:18:40,480 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:18:40,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:40,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1307109237, now seen corresponding path program 1 times [2024-10-24 19:18:40,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:40,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559248202] [2024-10-24 19:18:40,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:40,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:18:40,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:40,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559248202] [2024-10-24 19:18:40,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559248202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:18:40,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:18:40,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:18:40,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845552195] [2024-10-24 19:18:40,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:18:40,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:18:40,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:40,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:18:40,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:18:40,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 30 [2024-10-24 19:18:40,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 30 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:40,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:40,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 30 [2024-10-24 19:18:40,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:40,650 INFO L124 PetriNetUnfolderBase]: 109/220 cut-off events. [2024-10-24 19:18:40,651 INFO L125 PetriNetUnfolderBase]: For 91/125 co-relation queries the response was YES. [2024-10-24 19:18:40,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 220 events. 109/220 cut-off events. For 91/125 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 794 event pairs, 11 based on Foata normal form. 12/194 useless extension candidates. Maximal degree in co-relation 191. Up to 106 conditions per place. [2024-10-24 19:18:40,656 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 24 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-10-24 19:18:40,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 39 transitions, 174 flow [2024-10-24 19:18:40,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:18:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:18:40,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-10-24 19:18:40,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-10-24 19:18:40,658 INFO L175 Difference]: Start difference. First operand has 29 places, 30 transitions, 92 flow. Second operand 3 states and 65 transitions. [2024-10-24 19:18:40,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 39 transitions, 174 flow [2024-10-24 19:18:40,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 39 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:18:40,661 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 102 flow [2024-10-24 19:18:40,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2024-10-24 19:18:40,662 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-10-24 19:18:40,662 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 102 flow [2024-10-24 19:18:40,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:40,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:40,663 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:40,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 19:18:40,663 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:18:40,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:40,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1969716277, now seen corresponding path program 1 times [2024-10-24 19:18:40,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:40,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272493997] [2024-10-24 19:18:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:40,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:18:40,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:40,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272493997] [2024-10-24 19:18:40,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272493997] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:18:40,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:18:40,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:18:40,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061880865] [2024-10-24 19:18:40,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:18:40,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:18:40,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:40,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:18:40,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:18:40,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2024-10-24 19:18:40,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:40,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:40,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2024-10-24 19:18:40,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:40,842 INFO L124 PetriNetUnfolderBase]: 127/251 cut-off events. [2024-10-24 19:18:40,843 INFO L125 PetriNetUnfolderBase]: For 108/132 co-relation queries the response was YES. [2024-10-24 19:18:40,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 251 events. 127/251 cut-off events. For 108/132 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 935 event pairs, 14 based on Foata normal form. 7/237 useless extension candidates. Maximal degree in co-relation 200. Up to 119 conditions per place. [2024-10-24 19:18:40,846 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 24 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-10-24 19:18:40,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 176 flow [2024-10-24 19:18:40,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:18:40,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:18:40,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-10-24 19:18:40,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2024-10-24 19:18:40,849 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 102 flow. Second operand 3 states and 62 transitions. [2024-10-24 19:18:40,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 176 flow [2024-10-24 19:18:40,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 173 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:18:40,850 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 104 flow [2024-10-24 19:18:40,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2024-10-24 19:18:40,851 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-10-24 19:18:40,851 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 104 flow [2024-10-24 19:18:40,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:40,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:40,852 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:40,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 19:18:40,853 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:18:40,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:40,854 INFO L85 PathProgramCache]: Analyzing trace with hash 219646245, now seen corresponding path program 1 times [2024-10-24 19:18:40,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:40,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182847731] [2024-10-24 19:18:40,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:40,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:18:41,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182847731] [2024-10-24 19:18:41,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182847731] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:18:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963739039] [2024-10-24 19:18:41,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:41,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:41,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:18:41,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:18:41,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 19:18:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:41,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:18:41,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:18:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 19:18:41,238 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:18:41,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963739039] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:18:41,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 19:18:41,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-24 19:18:41,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048982356] [2024-10-24 19:18:41,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:18:41,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:18:41,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:41,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:18:41,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-10-24 19:18:41,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-24 19:18:41,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:41,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:41,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-24 19:18:41,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:41,329 INFO L124 PetriNetUnfolderBase]: 171/348 cut-off events. [2024-10-24 19:18:41,329 INFO L125 PetriNetUnfolderBase]: For 150/182 co-relation queries the response was YES. [2024-10-24 19:18:41,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 348 events. 171/348 cut-off events. For 150/182 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1427 event pairs, 23 based on Foata normal form. 12/323 useless extension candidates. Maximal degree in co-relation 322. Up to 188 conditions per place. [2024-10-24 19:18:41,332 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 28 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2024-10-24 19:18:41,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 224 flow [2024-10-24 19:18:41,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:18:41,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:18:41,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-10-24 19:18:41,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-24 19:18:41,334 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 104 flow. Second operand 4 states and 81 transitions. [2024-10-24 19:18:41,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 224 flow [2024-10-24 19:18:41,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:18:41,337 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 156 flow [2024-10-24 19:18:41,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2024-10-24 19:18:41,338 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-10-24 19:18:41,340 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 156 flow [2024-10-24 19:18:41,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:41,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:41,340 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:41,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 19:18:41,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:41,545 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:18:41,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:41,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1942479455, now seen corresponding path program 2 times [2024-10-24 19:18:41,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:41,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462959279] [2024-10-24 19:18:41,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:41,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:18:41,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:41,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462959279] [2024-10-24 19:18:41,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462959279] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:18:41,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459974298] [2024-10-24 19:18:41,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:18:41,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:41,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:18:41,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:18:41,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 19:18:41,736 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:18:41,737 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:18:41,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:18:41,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:18:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:18:41,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:18:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:18:42,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459974298] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:18:42,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:18:42,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2024-10-24 19:18:42,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113940180] [2024-10-24 19:18:42,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:18:42,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:18:42,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:42,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:18:42,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:18:42,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-10-24 19:18:42,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 156 flow. Second operand has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:42,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:42,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-10-24 19:18:42,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:42,336 INFO L124 PetriNetUnfolderBase]: 475/906 cut-off events. [2024-10-24 19:18:42,336 INFO L125 PetriNetUnfolderBase]: For 478/502 co-relation queries the response was YES. [2024-10-24 19:18:42,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 906 events. 475/906 cut-off events. For 478/502 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4288 event pairs, 76 based on Foata normal form. 32/915 useless extension candidates. Maximal degree in co-relation 878. Up to 170 conditions per place. [2024-10-24 19:18:42,341 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 83 selfloop transitions, 38 changer transitions 0/129 dead transitions. [2024-10-24 19:18:42,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 129 transitions, 721 flow [2024-10-24 19:18:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 19:18:42,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 19:18:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 233 transitions. [2024-10-24 19:18:42,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6472222222222223 [2024-10-24 19:18:42,343 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 156 flow. Second operand 12 states and 233 transitions. [2024-10-24 19:18:42,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 129 transitions, 721 flow [2024-10-24 19:18:42,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 129 transitions, 719 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-24 19:18:42,348 INFO L231 Difference]: Finished difference. Result has 58 places, 68 transitions, 493 flow [2024-10-24 19:18:42,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=493, PETRI_PLACES=58, PETRI_TRANSITIONS=68} [2024-10-24 19:18:42,349 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-10-24 19:18:42,349 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 68 transitions, 493 flow [2024-10-24 19:18:42,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:42,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:42,350 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:42,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 19:18:42,554 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,SelfDestructingSolverStorable5 [2024-10-24 19:18:42,555 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:18:42,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:42,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1920690333, now seen corresponding path program 1 times [2024-10-24 19:18:42,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:42,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440835154] [2024-10-24 19:18:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:42,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:42,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 19:18:42,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:42,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440835154] [2024-10-24 19:18:42,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440835154] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:18:42,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:18:42,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:18:42,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080558636] [2024-10-24 19:18:42,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:18:42,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:18:42,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:42,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:18:42,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:18:42,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-24 19:18:42,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 68 transitions, 493 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:42,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:42,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-24 19:18:42,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:42,836 INFO L124 PetriNetUnfolderBase]: 736/1380 cut-off events. [2024-10-24 19:18:42,837 INFO L125 PetriNetUnfolderBase]: For 4442/4499 co-relation queries the response was YES. [2024-10-24 19:18:42,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5257 conditions, 1380 events. 736/1380 cut-off events. For 4442/4499 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7236 event pairs, 193 based on Foata normal form. 42/1374 useless extension candidates. Maximal degree in co-relation 4312. Up to 430 conditions per place. [2024-10-24 19:18:42,847 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 64 selfloop transitions, 14 changer transitions 0/104 dead transitions. [2024-10-24 19:18:42,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 104 transitions, 937 flow [2024-10-24 19:18:42,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:18:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:18:42,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-10-24 19:18:42,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-10-24 19:18:42,848 INFO L175 Difference]: Start difference. First operand has 58 places, 68 transitions, 493 flow. Second operand 4 states and 82 transitions. [2024-10-24 19:18:42,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 104 transitions, 937 flow [2024-10-24 19:18:42,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 104 transitions, 869 flow, removed 34 selfloop flow, removed 0 redundant places. [2024-10-24 19:18:42,859 INFO L231 Difference]: Finished difference. Result has 62 places, 77 transitions, 588 flow [2024-10-24 19:18:42,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=588, PETRI_PLACES=62, PETRI_TRANSITIONS=77} [2024-10-24 19:18:42,860 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-10-24 19:18:42,860 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 77 transitions, 588 flow [2024-10-24 19:18:42,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:42,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:42,861 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:42,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 19:18:42,861 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:18:42,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1392331225, now seen corresponding path program 1 times [2024-10-24 19:18:42,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:42,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452510656] [2024-10-24 19:18:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:42,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:18:42,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:42,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452510656] [2024-10-24 19:18:42,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452510656] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:18:42,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127440986] [2024-10-24 19:18:42,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:42,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:42,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:18:42,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:18:42,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 19:18:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:43,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 19:18:43,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:18:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:18:43,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:18:43,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:18:43,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127440986] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:18:43,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:18:43,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-10-24 19:18:43,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185601973] [2024-10-24 19:18:43,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:18:43,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:18:43,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:43,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:18:43,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:18:43,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-24 19:18:43,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 77 transitions, 588 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:43,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:43,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-24 19:18:43,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:43,491 INFO L124 PetriNetUnfolderBase]: 2028/3882 cut-off events. [2024-10-24 19:18:43,492 INFO L125 PetriNetUnfolderBase]: For 13926/14104 co-relation queries the response was YES. [2024-10-24 19:18:43,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15358 conditions, 3882 events. 2028/3882 cut-off events. For 13926/14104 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 24730 event pairs, 266 based on Foata normal form. 36/3845 useless extension candidates. Maximal degree in co-relation 12242. Up to 1285 conditions per place. [2024-10-24 19:18:43,519 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 151 selfloop transitions, 15 changer transitions 2/194 dead transitions. [2024-10-24 19:18:43,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 194 transitions, 1879 flow [2024-10-24 19:18:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:18:43,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:18:43,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-10-24 19:18:43,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7866666666666666 [2024-10-24 19:18:43,523 INFO L175 Difference]: Start difference. First operand has 62 places, 77 transitions, 588 flow. Second operand 5 states and 118 transitions. [2024-10-24 19:18:43,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 194 transitions, 1879 flow [2024-10-24 19:18:43,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 194 transitions, 1839 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-10-24 19:18:43,542 INFO L231 Difference]: Finished difference. Result has 67 places, 89 transitions, 673 flow [2024-10-24 19:18:43,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=673, PETRI_PLACES=67, PETRI_TRANSITIONS=89} [2024-10-24 19:18:43,543 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-10-24 19:18:43,544 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 89 transitions, 673 flow [2024-10-24 19:18:43,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:43,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:43,544 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:43,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 19:18:43,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:43,745 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:18:43,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:43,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1728791801, now seen corresponding path program 2 times [2024-10-24 19:18:43,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:43,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902927351] [2024-10-24 19:18:43,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:43,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 19:18:43,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:43,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902927351] [2024-10-24 19:18:43,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902927351] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:18:43,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201880842] [2024-10-24 19:18:43,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:18:43,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:43,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:18:43,841 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:18:43,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 19:18:43,887 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:18:43,888 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:18:43,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 19:18:43,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:18:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 19:18:43,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:18:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 19:18:43,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201880842] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:18:43,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:18:43,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-24 19:18:43,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353034267] [2024-10-24 19:18:43,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:18:43,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:18:43,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:43,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:18:43,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:18:43,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-24 19:18:43,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 89 transitions, 673 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:43,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:43,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-24 19:18:43,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:44,812 INFO L124 PetriNetUnfolderBase]: 3832/7286 cut-off events. [2024-10-24 19:18:44,812 INFO L125 PetriNetUnfolderBase]: For 27317/27738 co-relation queries the response was YES. [2024-10-24 19:18:44,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30280 conditions, 7286 events. 3832/7286 cut-off events. For 27317/27738 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 53163 event pairs, 418 based on Foata normal form. 134/7293 useless extension candidates. Maximal degree in co-relation 24203. Up to 1850 conditions per place. [2024-10-24 19:18:44,867 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 191 selfloop transitions, 31 changer transitions 2/250 dead transitions. [2024-10-24 19:18:44,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 250 transitions, 2450 flow [2024-10-24 19:18:44,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:18:44,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:18:44,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-10-24 19:18:44,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8 [2024-10-24 19:18:44,909 INFO L175 Difference]: Start difference. First operand has 67 places, 89 transitions, 673 flow. Second operand 6 states and 144 transitions. [2024-10-24 19:18:44,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 250 transitions, 2450 flow [2024-10-24 19:18:44,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 250 transitions, 2394 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-10-24 19:18:44,948 INFO L231 Difference]: Finished difference. Result has 73 places, 105 transitions, 800 flow [2024-10-24 19:18:44,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=800, PETRI_PLACES=73, PETRI_TRANSITIONS=105} [2024-10-24 19:18:44,949 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-10-24 19:18:44,949 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 105 transitions, 800 flow [2024-10-24 19:18:44,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:44,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:44,950 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:44,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 19:18:45,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:45,154 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:18:45,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:45,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1634088739, now seen corresponding path program 3 times [2024-10-24 19:18:45,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:45,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127720863] [2024-10-24 19:18:45,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:45,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:18:45,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:45,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127720863] [2024-10-24 19:18:45,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127720863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:18:45,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:18:45,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:18:45,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784603784] [2024-10-24 19:18:45,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:18:45,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:18:45,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:18:45,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:18:45,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-24 19:18:45,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 105 transitions, 800 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:45,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:45,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-24 19:18:45,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:45,527 INFO L124 PetriNetUnfolderBase]: 1338/2964 cut-off events. [2024-10-24 19:18:45,528 INFO L125 PetriNetUnfolderBase]: For 11786/11986 co-relation queries the response was YES. [2024-10-24 19:18:45,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12148 conditions, 2964 events. 1338/2964 cut-off events. For 11786/11986 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 20838 event pairs, 326 based on Foata normal form. 200/3076 useless extension candidates. Maximal degree in co-relation 9959. Up to 900 conditions per place. [2024-10-24 19:18:45,547 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 61 selfloop transitions, 11 changer transitions 0/106 dead transitions. [2024-10-24 19:18:45,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 952 flow [2024-10-24 19:18:45,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:18:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:18:45,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-10-24 19:18:45,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-10-24 19:18:45,548 INFO L175 Difference]: Start difference. First operand has 73 places, 105 transitions, 800 flow. Second operand 4 states and 76 transitions. [2024-10-24 19:18:45,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 952 flow [2024-10-24 19:18:45,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 106 transitions, 919 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-10-24 19:18:45,561 INFO L231 Difference]: Finished difference. Result has 75 places, 92 transitions, 719 flow [2024-10-24 19:18:45,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=719, PETRI_PLACES=75, PETRI_TRANSITIONS=92} [2024-10-24 19:18:45,561 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-10-24 19:18:45,562 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 92 transitions, 719 flow [2024-10-24 19:18:45,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:45,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:45,562 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:45,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 19:18:45,562 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:18:45,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1035872445, now seen corresponding path program 4 times [2024-10-24 19:18:45,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:45,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569328423] [2024-10-24 19:18:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:45,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 19:18:45,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:45,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569328423] [2024-10-24 19:18:45,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569328423] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:18:45,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521584432] [2024-10-24 19:18:45,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:18:45,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:45,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:18:45,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:18:45,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 19:18:45,827 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:18:45,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:18:45,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:18:45,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:18:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 19:18:45,885 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:18:45,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521584432] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:18:45,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 19:18:45,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-10-24 19:18:45,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745376504] [2024-10-24 19:18:45,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:18:45,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:18:45,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:45,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:18:45,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:18:45,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-10-24 19:18:45,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 92 transitions, 719 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:45,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:45,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-10-24 19:18:45,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:46,112 INFO L124 PetriNetUnfolderBase]: 1304/2776 cut-off events. [2024-10-24 19:18:46,112 INFO L125 PetriNetUnfolderBase]: For 12176/12331 co-relation queries the response was YES. [2024-10-24 19:18:46,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11793 conditions, 2776 events. 1304/2776 cut-off events. For 12176/12331 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 18359 event pairs, 270 based on Foata normal form. 90/2802 useless extension candidates. Maximal degree in co-relation 9584. Up to 981 conditions per place. [2024-10-24 19:18:46,129 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 62 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-10-24 19:18:46,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 995 flow [2024-10-24 19:18:46,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:18:46,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:18:46,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-10-24 19:18:46,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-10-24 19:18:46,131 INFO L175 Difference]: Start difference. First operand has 75 places, 92 transitions, 719 flow. Second operand 4 states and 76 transitions. [2024-10-24 19:18:46,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 995 flow [2024-10-24 19:18:46,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 107 transitions, 994 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:18:46,146 INFO L231 Difference]: Finished difference. Result has 79 places, 92 transitions, 785 flow [2024-10-24 19:18:46,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=785, PETRI_PLACES=79, PETRI_TRANSITIONS=92} [2024-10-24 19:18:46,147 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-10-24 19:18:46,147 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 92 transitions, 785 flow [2024-10-24 19:18:46,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:46,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:46,147 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:46,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 19:18:46,348 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,SelfDestructingSolverStorable10 [2024-10-24 19:18:46,349 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:18:46,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:46,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1341340825, now seen corresponding path program 5 times [2024-10-24 19:18:46,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:46,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009376096] [2024-10-24 19:18:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:46,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 19:18:46,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:46,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009376096] [2024-10-24 19:18:46,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009376096] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:18:46,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636677760] [2024-10-24 19:18:46,571 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 19:18:46,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:46,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:18:46,573 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:18:46,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 19:18:46,625 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-24 19:18:46,625 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:18:46,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 19:18:46,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:18:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 19:18:46,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:18:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 19:18:46,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636677760] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 19:18:46,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:18:46,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 8] total 14 [2024-10-24 19:18:46,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269676566] [2024-10-24 19:18:46,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:18:46,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:18:46,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:46,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:18:46,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:18:46,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-10-24 19:18:46,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 92 transitions, 785 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:46,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:46,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-10-24 19:18:46,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:47,293 INFO L124 PetriNetUnfolderBase]: 1820/3377 cut-off events. [2024-10-24 19:18:47,294 INFO L125 PetriNetUnfolderBase]: For 20391/20653 co-relation queries the response was YES. [2024-10-24 19:18:47,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15735 conditions, 3377 events. 1820/3377 cut-off events. For 20391/20653 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 20508 event pairs, 342 based on Foata normal form. 166/3452 useless extension candidates. Maximal degree in co-relation 12522. Up to 1345 conditions per place. [2024-10-24 19:18:47,316 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 74 selfloop transitions, 28 changer transitions 0/134 dead transitions. [2024-10-24 19:18:47,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 134 transitions, 1355 flow [2024-10-24 19:18:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:18:47,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:18:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-10-24 19:18:47,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-24 19:18:47,318 INFO L175 Difference]: Start difference. First operand has 79 places, 92 transitions, 785 flow. Second operand 4 states and 78 transitions. [2024-10-24 19:18:47,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 134 transitions, 1355 flow [2024-10-24 19:18:47,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 134 transitions, 1310 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-24 19:18:47,341 INFO L231 Difference]: Finished difference. Result has 81 places, 102 transitions, 962 flow [2024-10-24 19:18:47,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=962, PETRI_PLACES=81, PETRI_TRANSITIONS=102} [2024-10-24 19:18:47,344 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-10-24 19:18:47,344 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 102 transitions, 962 flow [2024-10-24 19:18:47,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:47,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:18:47,344 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:18:47,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 19:18:47,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:18:47,545 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:18:47,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:18:47,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1723354693, now seen corresponding path program 6 times [2024-10-24 19:18:47,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:18:47,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429289961] [2024-10-24 19:18:47,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:18:47,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:18:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:18:47,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:18:47,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:18:47,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429289961] [2024-10-24 19:18:47,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429289961] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:18:47,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:18:47,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:18:47,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725975521] [2024-10-24 19:18:47,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:18:47,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:18:47,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:18:47,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:18:47,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:18:47,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-24 19:18:47,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 102 transitions, 962 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:47,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:18:47,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-24 19:18:47,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:18:47,762 INFO L124 PetriNetUnfolderBase]: 867/1756 cut-off events. [2024-10-24 19:18:47,762 INFO L125 PetriNetUnfolderBase]: For 13965/14046 co-relation queries the response was YES. [2024-10-24 19:18:47,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8923 conditions, 1756 events. 867/1756 cut-off events. For 13965/14046 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9953 event pairs, 279 based on Foata normal form. 163/1863 useless extension candidates. Maximal degree in co-relation 3540. Up to 731 conditions per place. [2024-10-24 19:18:47,770 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 0 selfloop transitions, 0 changer transitions 100/100 dead transitions. [2024-10-24 19:18:47,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 100 transitions, 1115 flow [2024-10-24 19:18:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:18:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:18:47,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-10-24 19:18:47,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-24 19:18:47,771 INFO L175 Difference]: Start difference. First operand has 81 places, 102 transitions, 962 flow. Second operand 4 states and 72 transitions. [2024-10-24 19:18:47,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 100 transitions, 1115 flow [2024-10-24 19:18:47,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 100 transitions, 1072 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-24 19:18:47,783 INFO L231 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2024-10-24 19:18:47,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2024-10-24 19:18:47,784 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-10-24 19:18:47,784 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2024-10-24 19:18:47,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:18:47,786 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-10-24 19:18:47,787 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-10-24 19:18:47,787 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-24 19:18:47,787 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-24 19:18:47,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 19:18:47,787 INFO L407 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1, 1] [2024-10-24 19:18:47,789 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 19:18:47,790 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 19:18:47,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:18:47 BasicIcfg [2024-10-24 19:18:47,795 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 19:18:47,795 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 19:18:47,795 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 19:18:47,795 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 19:18:47,796 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:18:39" (3/4) ... [2024-10-24 19:18:47,797 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 19:18:47,800 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-24 19:18:47,800 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-24 19:18:47,803 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2024-10-24 19:18:47,805 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-10-24 19:18:47,805 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-24 19:18:47,805 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 19:18:47,871 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 19:18:47,872 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 19:18:47,872 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 19:18:47,872 INFO L158 Benchmark]: Toolchain (without parser) took 9058.14ms. Allocated memory was 142.6MB in the beginning and 553.6MB in the end (delta: 411.0MB). Free memory was 73.6MB in the beginning and 200.3MB in the end (delta: -126.7MB). Peak memory consumption was 285.0MB. Max. memory is 16.1GB. [2024-10-24 19:18:47,873 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 142.6MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:18:47,873 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.90ms. Allocated memory is still 142.6MB. Free memory was 73.3MB in the beginning and 113.2MB in the end (delta: -40.0MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2024-10-24 19:18:47,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.81ms. Allocated memory was 142.6MB in the beginning and 197.1MB in the end (delta: 54.5MB). Free memory was 113.2MB in the beginning and 169.3MB in the end (delta: -56.1MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2024-10-24 19:18:47,873 INFO L158 Benchmark]: Boogie Preprocessor took 33.20ms. Allocated memory is still 197.1MB. Free memory was 169.3MB in the beginning and 167.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 19:18:47,873 INFO L158 Benchmark]: RCFGBuilder took 518.64ms. Allocated memory is still 197.1MB. Free memory was 167.2MB in the beginning and 144.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-24 19:18:47,874 INFO L158 Benchmark]: TraceAbstraction took 8120.67ms. Allocated memory was 197.1MB in the beginning and 553.6MB in the end (delta: 356.5MB). Free memory was 143.1MB in the beginning and 204.5MB in the end (delta: -61.4MB). Peak memory consumption was 295.1MB. Max. memory is 16.1GB. [2024-10-24 19:18:47,874 INFO L158 Benchmark]: Witness Printer took 77.03ms. Allocated memory is still 553.6MB. Free memory was 204.5MB in the beginning and 200.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 19:18:47,875 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 142.6MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.90ms. Allocated memory is still 142.6MB. Free memory was 73.3MB in the beginning and 113.2MB in the end (delta: -40.0MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.81ms. Allocated memory was 142.6MB in the beginning and 197.1MB in the end (delta: 54.5MB). Free memory was 113.2MB in the beginning and 169.3MB in the end (delta: -56.1MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.20ms. Allocated memory is still 197.1MB. Free memory was 169.3MB in the beginning and 167.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 518.64ms. Allocated memory is still 197.1MB. Free memory was 167.2MB in the beginning and 144.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 8120.67ms. Allocated memory was 197.1MB in the beginning and 553.6MB in the end (delta: 356.5MB). Free memory was 143.1MB in the beginning and 204.5MB in the end (delta: -61.4MB). Peak memory consumption was 295.1MB. Max. memory is 16.1GB. * Witness Printer took 77.03ms. Allocated memory is still 553.6MB. Free memory was 204.5MB in the beginning and 200.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 85]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 43 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.0s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 282 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 904 IncrementalHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 7 mSDtfsCounter, 904 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 330 GetRequests, 271 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=962occurred in iteration=12, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 491 NumberOfCodeBlocks, 491 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 2259 SizeOfPredicates, 13 NumberOfNonLiveVariables, 708 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 23 InterpolantComputations, 10 PerfectInterpolantSequences, 126/206 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 19:18:47,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE