./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/popl20-more-nonblocking-counter-alt2.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/popl20-more-nonblocking-counter-alt2.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 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:23:52,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:23:52,460 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:23:52,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:23:52,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:23:52,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:23:52,489 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:23:52,490 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:23:52,490 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:23:52,491 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:23:52,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:23:52,492 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:23:52,492 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:23:52,495 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:23:52,495 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:23:52,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:23:52,497 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:23:52,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:23:52,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:23:52,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:23:52,498 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:23:52,498 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:23:52,499 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:23:52,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:23:52,499 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:23:52,499 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:23:52,499 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:23:52,500 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:23:52,500 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:23:52,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:23:52,500 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:23:52,500 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:23:52,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:23:52,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:23:52,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:23:52,501 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:23:52,501 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:23:52,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:23:52,501 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:23:52,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:23:52,502 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:23:52,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:23:52,503 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd [2024-10-24 19:23:52,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:23:52,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:23:52,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:23:52,726 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:23:52,726 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:23:52,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-10-24 19:23:53,982 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:23:54,115 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:23:54,116 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-10-24 19:23:54,121 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad29a3716/de85fef693be4a3f82327c58330f2ef9/FLAG92759fb54 [2024-10-24 19:23:54,537 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad29a3716/de85fef693be4a3f82327c58330f2ef9 [2024-10-24 19:23:54,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:23:54,540 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:23:54,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:23:54,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:23:54,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:23:54,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:23:54" (1/1) ... [2024-10-24 19:23:54,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8356d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54, skipping insertion in model container [2024-10-24 19:23:54,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:23:54" (1/1) ... [2024-10-24 19:23:54,568 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:23:54,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:23:54,725 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:23:54,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:23:54,752 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:23:54,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54 WrapperNode [2024-10-24 19:23:54,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:23:54,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:23:54,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:23:54,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:23:54,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54" (1/1) ... [2024-10-24 19:23:54,766 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54" (1/1) ... [2024-10-24 19:23:54,782 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 46 [2024-10-24 19:23:54,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:23:54,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:23:54,784 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:23:54,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:23:54,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54" (1/1) ... [2024-10-24 19:23:54,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54" (1/1) ... [2024-10-24 19:23:54,794 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54" (1/1) ... [2024-10-24 19:23:54,808 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 19:23:54,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54" (1/1) ... [2024-10-24 19:23:54,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54" (1/1) ... [2024-10-24 19:23:54,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54" (1/1) ... [2024-10-24 19:23:54,817 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54" (1/1) ... [2024-10-24 19:23:54,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54" (1/1) ... [2024-10-24 19:23:54,823 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54" (1/1) ... [2024-10-24 19:23:54,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:23:54,829 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:23:54,829 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:23:54,829 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:23:54,830 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54" (1/1) ... [2024-10-24 19:23:54,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:23:54,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:23:54,860 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 19:23:54,866 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 19:23:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:23:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:23:54,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:23:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:23:54,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:23:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 19:23:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 19:23:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 19:23:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:23:54,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:23:54,903 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 19:23:54,990 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:23:54,992 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:23:55,127 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:23:55,127 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:23:55,258 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:23:55,259 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 19:23:55,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:23:55 BoogieIcfgContainer [2024-10-24 19:23:55,259 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:23:55,261 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:23:55,262 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:23:55,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:23:55,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:23:54" (1/3) ... [2024-10-24 19:23:55,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f871ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:23:55, skipping insertion in model container [2024-10-24 19:23:55,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:23:54" (2/3) ... [2024-10-24 19:23:55,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f871ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:23:55, skipping insertion in model container [2024-10-24 19:23:55,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:23:55" (3/3) ... [2024-10-24 19:23:55,269 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2024-10-24 19:23:55,280 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:23:55,281 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 19:23:55,281 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:23:55,307 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 19:23:55,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-10-24 19:23:55,355 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-10-24 19:23:55,359 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:23:55,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-10-24 19:23:55,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-10-24 19:23:55,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-10-24 19:23:55,370 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:23:55,374 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;@2af57f20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:23:55,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 19:23:55,383 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:23:55,383 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-10-24 19:23:55,383 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:23:55,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:23:55,384 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:23:55,384 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 19:23:55,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:23:55,388 INFO L85 PathProgramCache]: Analyzing trace with hash 153611902, now seen corresponding path program 1 times [2024-10-24 19:23:55,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:23:55,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779852805] [2024-10-24 19:23:55,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:23:55,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:23:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:23:55,696 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 19:23:55,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:23:55,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779852805] [2024-10-24 19:23:55,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779852805] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:23:55,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:23:55,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:23:55,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735071450] [2024-10-24 19:23:55,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:23:55,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:23:55,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:23:55,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:23:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:23:55,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-10-24 19:23:55,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:55,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:23:55,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-10-24 19:23:55,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:23:55,802 INFO L124 PetriNetUnfolderBase]: 73/148 cut-off events. [2024-10-24 19:23:55,803 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-24 19:23:55,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 148 events. 73/148 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 436 event pairs, 22 based on Foata normal form. 2/149 useless extension candidates. Maximal degree in co-relation 256. Up to 74 conditions per place. [2024-10-24 19:23:55,805 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 20 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-10-24 19:23:55,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 127 flow [2024-10-24 19:23:55,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:23:55,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:23:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-10-24 19:23:55,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-10-24 19:23:55,816 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 3 states and 45 transitions. [2024-10-24 19:23:55,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 127 flow [2024-10-24 19:23:55,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:23:55,821 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 52 flow [2024-10-24 19:23:55,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2024-10-24 19:23:55,826 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, -3 predicate places. [2024-10-24 19:23:55,827 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 52 flow [2024-10-24 19:23:55,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:55,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:23:55,829 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:23:55,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 19:23:55,829 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 19:23:55,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:23:55,831 INFO L85 PathProgramCache]: Analyzing trace with hash 178506475, now seen corresponding path program 1 times [2024-10-24 19:23:55,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:23:55,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169724368] [2024-10-24 19:23:55,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:23:55,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:23:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:23:55,932 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 19:23:55,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:23:55,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169724368] [2024-10-24 19:23:55,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169724368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:23:55,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:23:55,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:23:55,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462471870] [2024-10-24 19:23:55,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:23:55,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:23:55,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:23:55,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:23:55,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:23:55,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-24 19:23:55,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:55,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:23:55,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-24 19:23:55,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:23:56,021 INFO L124 PetriNetUnfolderBase]: 142/260 cut-off events. [2024-10-24 19:23:56,021 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-24 19:23:56,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 260 events. 142/260 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 868 event pairs, 81 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 277. Up to 179 conditions per place. [2024-10-24 19:23:56,025 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-10-24 19:23:56,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 117 flow [2024-10-24 19:23:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:23:56,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:23:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-10-24 19:23:56,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-10-24 19:23:56,028 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 52 flow. Second operand 4 states and 45 transitions. [2024-10-24 19:23:56,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 117 flow [2024-10-24 19:23:56,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:23:56,029 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-10-24 19:23:56,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2024-10-24 19:23:56,030 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-10-24 19:23:56,031 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-10-24 19:23:56,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:56,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:23:56,031 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:23:56,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 19:23:56,031 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 19:23:56,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:23:56,032 INFO L85 PathProgramCache]: Analyzing trace with hash 808698325, now seen corresponding path program 1 times [2024-10-24 19:23:56,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:23:56,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908827748] [2024-10-24 19:23:56,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:23:56,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:23:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:23:56,326 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 19:23:56,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:23:56,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908827748] [2024-10-24 19:23:56,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908827748] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:23:56,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192978109] [2024-10-24 19:23:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:23:56,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:23:56,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:23:56,330 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 19:23:56,331 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 19:23:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:23:56,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:23:56,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:23:56,561 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 19:23:56,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:23:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:23:56,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192978109] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:23:56,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:23:56,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 12 [2024-10-24 19:23:56,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197426570] [2024-10-24 19:23:56,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:23:56,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:23:56,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:23:56,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:23:56,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:23:56,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-24 19:23:56,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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 19:23:56,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:23:56,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-24 19:23:56,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:23:57,076 INFO L124 PetriNetUnfolderBase]: 402/697 cut-off events. [2024-10-24 19:23:57,077 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-10-24 19:23:57,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 697 events. 402/697 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2889 event pairs, 5 based on Foata normal form. 2/645 useless extension candidates. Maximal degree in co-relation 598. Up to 184 conditions per place. [2024-10-24 19:23:57,081 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 77 selfloop transitions, 17 changer transitions 10/105 dead transitions. [2024-10-24 19:23:57,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 105 transitions, 522 flow [2024-10-24 19:23:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 19:23:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 19:23:57,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-10-24 19:23:57,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5810276679841897 [2024-10-24 19:23:57,086 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 11 states and 147 transitions. [2024-10-24 19:23:57,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 105 transitions, 522 flow [2024-10-24 19:23:57,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 105 transitions, 504 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-24 19:23:57,089 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 197 flow [2024-10-24 19:23:57,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=197, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-10-24 19:23:57,090 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 16 predicate places. [2024-10-24 19:23:57,091 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 197 flow [2024-10-24 19:23:57,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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 19:23:57,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:23:57,091 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:23:57,105 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 19:23:57,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:23:57,293 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 19:23:57,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:23:57,293 INFO L85 PathProgramCache]: Analyzing trace with hash -647721243, now seen corresponding path program 2 times [2024-10-24 19:23:57,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:23:57,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578282842] [2024-10-24 19:23:57,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:23:57,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:23:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:23:57,386 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 19:23:57,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:23:57,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578282842] [2024-10-24 19:23:57,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578282842] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:23:57,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996821493] [2024-10-24 19:23:57,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:23:57,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:23:57,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:23:57,389 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 19:23:57,390 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 19:23:57,434 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:23:57,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:23:57,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:23:57,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:23:57,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:23:57,468 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:23:57,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996821493] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:23:57,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 19:23:57,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 19:23:57,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867312312] [2024-10-24 19:23:57,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:23:57,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:23:57,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:23:57,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:23:57,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 19:23:57,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-24 19:23:57,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 19:23:57,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:23:57,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-24 19:23:57,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:23:57,561 INFO L124 PetriNetUnfolderBase]: 396/687 cut-off events. [2024-10-24 19:23:57,561 INFO L125 PetriNetUnfolderBase]: For 803/803 co-relation queries the response was YES. [2024-10-24 19:23:57,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2110 conditions, 687 events. 396/687 cut-off events. For 803/803 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2820 event pairs, 122 based on Foata normal form. 6/693 useless extension candidates. Maximal degree in co-relation 1965. Up to 605 conditions per place. [2024-10-24 19:23:57,567 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 43 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2024-10-24 19:23:57,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 368 flow [2024-10-24 19:23:57,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:23:57,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:23:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-10-24 19:23:57,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-10-24 19:23:57,568 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 197 flow. Second operand 5 states and 55 transitions. [2024-10-24 19:23:57,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 368 flow [2024-10-24 19:23:57,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 340 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-10-24 19:23:57,579 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 229 flow [2024-10-24 19:23:57,580 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-10-24 19:23:57,581 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2024-10-24 19:23:57,581 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 229 flow [2024-10-24 19:23:57,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 19:23:57,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:23:57,582 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:23:57,595 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 19:23:57,785 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,SelfDestructingSolverStorable3 [2024-10-24 19:23:57,786 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 19:23:57,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:23:57,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1711533315, now seen corresponding path program 3 times [2024-10-24 19:23:57,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:23:57,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473371745] [2024-10-24 19:23:57,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:23:57,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:23:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:23:57,883 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 19:23:57,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:23:57,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473371745] [2024-10-24 19:23:57,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473371745] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:23:57,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23230349] [2024-10-24 19:23:57,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:23:57,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:23:57,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:23:57,885 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 19:23:57,887 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 19:23:57,927 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-24 19:23:57,927 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:23:57,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:23:57,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:23:58,058 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 19:23:58,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:23:58,376 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 19:23:58,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23230349] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:23:58,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:23:58,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-10-24 19:23:58,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617056669] [2024-10-24 19:23:58,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:23:58,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 19:23:58,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:23:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 19:23:58,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-10-24 19:23:58,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-24 19:23:58,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 229 flow. Second operand has 19 states, 19 states have (on average 6.473684210526316) internal successors, (123), 19 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:58,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:23:58,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-24 19:23:58,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:23:59,020 INFO L124 PetriNetUnfolderBase]: 711/1204 cut-off events. [2024-10-24 19:23:59,020 INFO L125 PetriNetUnfolderBase]: For 1624/1624 co-relation queries the response was YES. [2024-10-24 19:23:59,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3910 conditions, 1204 events. 711/1204 cut-off events. For 1624/1624 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5453 event pairs, 46 based on Foata normal form. 44/1248 useless extension candidates. Maximal degree in co-relation 3730. Up to 358 conditions per place. [2024-10-24 19:23:59,026 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 97 selfloop transitions, 69 changer transitions 6/173 dead transitions. [2024-10-24 19:23:59,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 173 transitions, 1206 flow [2024-10-24 19:23:59,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 19:23:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 19:23:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 230 transitions. [2024-10-24 19:23:59,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-10-24 19:23:59,028 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 229 flow. Second operand 24 states and 230 transitions. [2024-10-24 19:23:59,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 173 transitions, 1206 flow [2024-10-24 19:23:59,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 173 transitions, 1198 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-24 19:23:59,034 INFO L231 Difference]: Finished difference. Result has 84 places, 106 transitions, 938 flow [2024-10-24 19:23:59,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=938, PETRI_PLACES=84, PETRI_TRANSITIONS=106} [2024-10-24 19:23:59,035 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 59 predicate places. [2024-10-24 19:23:59,035 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 106 transitions, 938 flow [2024-10-24 19:23:59,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.473684210526316) internal successors, (123), 19 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:59,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:23:59,035 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:23:59,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 19:23:59,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:23:59,236 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 19:23:59,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:23:59,237 INFO L85 PathProgramCache]: Analyzing trace with hash -418985660, now seen corresponding path program 4 times [2024-10-24 19:23:59,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:23:59,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237882419] [2024-10-24 19:23:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:23:59,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:23:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:23:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:23:59,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:23:59,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237882419] [2024-10-24 19:23:59,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237882419] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:23:59,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916483966] [2024-10-24 19:23:59,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:23:59,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:23:59,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:23:59,371 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 19:23:59,372 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 19:23:59,414 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:23:59,414 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:23:59,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:23:59,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:23:59,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:23:59,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:23:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:23:59,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916483966] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:23:59,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:23:59,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-10-24 19:23:59,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031707315] [2024-10-24 19:23:59,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:23:59,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 19:23:59,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:23:59,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 19:23:59,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-10-24 19:23:59,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-24 19:23:59,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 106 transitions, 938 flow. Second operand has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:23:59,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:23:59,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-24 19:23:59,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:00,347 INFO L124 PetriNetUnfolderBase]: 1195/2049 cut-off events. [2024-10-24 19:24:00,347 INFO L125 PetriNetUnfolderBase]: For 19118/19145 co-relation queries the response was YES. [2024-10-24 19:24:00,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11139 conditions, 2049 events. 1195/2049 cut-off events. For 19118/19145 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10733 event pairs, 48 based on Foata normal form. 21/2066 useless extension candidates. Maximal degree in co-relation 10851. Up to 491 conditions per place. [2024-10-24 19:24:00,362 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 132 selfloop transitions, 194 changer transitions 21/372 dead transitions. [2024-10-24 19:24:00,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 372 transitions, 4103 flow [2024-10-24 19:24:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 19:24:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 19:24:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 237 transitions. [2024-10-24 19:24:00,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4683794466403162 [2024-10-24 19:24:00,365 INFO L175 Difference]: Start difference. First operand has 84 places, 106 transitions, 938 flow. Second operand 22 states and 237 transitions. [2024-10-24 19:24:00,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 372 transitions, 4103 flow [2024-10-24 19:24:00,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 372 transitions, 3649 flow, removed 218 selfloop flow, removed 4 redundant places. [2024-10-24 19:24:00,425 INFO L231 Difference]: Finished difference. Result has 117 places, 277 transitions, 3164 flow [2024-10-24 19:24:00,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3164, PETRI_PLACES=117, PETRI_TRANSITIONS=277} [2024-10-24 19:24:00,427 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 92 predicate places. [2024-10-24 19:24:00,427 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 277 transitions, 3164 flow [2024-10-24 19:24:00,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:00,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:00,427 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:00,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 19:24:00,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:24:00,628 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 19:24:00,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:00,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1202640566, now seen corresponding path program 5 times [2024-10-24 19:24:00,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:24:00,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031501248] [2024-10-24 19:24:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:00,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:24:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:00,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:24:00,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031501248] [2024-10-24 19:24:00,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031501248] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:24:00,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149366259] [2024-10-24 19:24:00,800 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 19:24:00,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:24:00,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:24:00,802 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 19:24:00,803 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 19:24:00,841 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-24 19:24:00,841 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:00,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:24:00,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:00,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:01,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149366259] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:01,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:24:01,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-10-24 19:24:01,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627206327] [2024-10-24 19:24:01,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:01,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 19:24:01,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:24:01,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 19:24:01,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-24 19:24:01,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-24 19:24:01,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 277 transitions, 3164 flow. Second operand has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 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 19:24:01,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:01,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-24 19:24:01,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:02,028 INFO L124 PetriNetUnfolderBase]: 1758/2934 cut-off events. [2024-10-24 19:24:02,028 INFO L125 PetriNetUnfolderBase]: For 40703/40703 co-relation queries the response was YES. [2024-10-24 19:24:02,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18778 conditions, 2934 events. 1758/2934 cut-off events. For 40703/40703 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 15909 event pairs, 38 based on Foata normal form. 55/2989 useless extension candidates. Maximal degree in co-relation 18431. Up to 734 conditions per place. [2024-10-24 19:24:02,061 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 220 selfloop transitions, 358 changer transitions 5/584 dead transitions. [2024-10-24 19:24:02,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 584 transitions, 7804 flow [2024-10-24 19:24:02,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-24 19:24:02,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-24 19:24:02,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 277 transitions. [2024-10-24 19:24:02,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4301242236024845 [2024-10-24 19:24:02,100 INFO L175 Difference]: Start difference. First operand has 117 places, 277 transitions, 3164 flow. Second operand 28 states and 277 transitions. [2024-10-24 19:24:02,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 584 transitions, 7804 flow [2024-10-24 19:24:02,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 584 transitions, 7375 flow, removed 211 selfloop flow, removed 3 redundant places. [2024-10-24 19:24:02,227 INFO L231 Difference]: Finished difference. Result has 160 places, 489 transitions, 6864 flow [2024-10-24 19:24:02,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6864, PETRI_PLACES=160, PETRI_TRANSITIONS=489} [2024-10-24 19:24:02,228 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 135 predicate places. [2024-10-24 19:24:02,228 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 489 transitions, 6864 flow [2024-10-24 19:24:02,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 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 19:24:02,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:02,228 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:02,242 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 19:24:02,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:24:02,429 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 19:24:02,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:02,430 INFO L85 PathProgramCache]: Analyzing trace with hash -592233352, now seen corresponding path program 6 times [2024-10-24 19:24:02,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:24:02,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584019623] [2024-10-24 19:24:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:02,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:24:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:02,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:24:02,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584019623] [2024-10-24 19:24:02,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584019623] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:24:02,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279246783] [2024-10-24 19:24:02,614 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-24 19:24:02,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:24:02,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:24:02,616 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 19:24:02,617 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 19:24:02,655 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-24 19:24:02,655 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:02,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:24:02,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:02,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:02,749 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:02,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279246783] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:02,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:24:02,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2024-10-24 19:24:02,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619068069] [2024-10-24 19:24:02,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:02,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 19:24:02,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:24:02,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 19:24:02,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-10-24 19:24:02,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-24 19:24:02,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 489 transitions, 6864 flow. Second operand has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 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 19:24:02,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:02,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-24 19:24:02,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:04,760 INFO L124 PetriNetUnfolderBase]: 2134/3655 cut-off events. [2024-10-24 19:24:04,760 INFO L125 PetriNetUnfolderBase]: For 72399/72430 co-relation queries the response was YES. [2024-10-24 19:24:04,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26858 conditions, 3655 events. 2134/3655 cut-off events. For 72399/72430 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 21149 event pairs, 48 based on Foata normal form. 105/3758 useless extension candidates. Maximal degree in co-relation 25465. Up to 899 conditions per place. [2024-10-24 19:24:04,796 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 201 selfloop transitions, 629 changer transitions 4/874 dead transitions. [2024-10-24 19:24:04,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 874 transitions, 13826 flow [2024-10-24 19:24:04,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-24 19:24:04,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-10-24 19:24:04,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 477 transitions. [2024-10-24 19:24:04,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4412580943570768 [2024-10-24 19:24:04,798 INFO L175 Difference]: Start difference. First operand has 160 places, 489 transitions, 6864 flow. Second operand 47 states and 477 transitions. [2024-10-24 19:24:04,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 874 transitions, 13826 flow [2024-10-24 19:24:05,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 874 transitions, 13271 flow, removed 269 selfloop flow, removed 5 redundant places. [2024-10-24 19:24:05,070 INFO L231 Difference]: Finished difference. Result has 223 places, 736 transitions, 12262 flow [2024-10-24 19:24:05,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=6434, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=371, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=12262, PETRI_PLACES=223, PETRI_TRANSITIONS=736} [2024-10-24 19:24:05,071 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 198 predicate places. [2024-10-24 19:24:05,071 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 736 transitions, 12262 flow [2024-10-24 19:24:05,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 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 19:24:05,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:05,072 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:05,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 19:24:05,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:24:05,272 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 19:24:05,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:05,273 INFO L85 PathProgramCache]: Analyzing trace with hash -94523098, now seen corresponding path program 7 times [2024-10-24 19:24:05,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:24:05,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962800721] [2024-10-24 19:24:05,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:05,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:24:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:05,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:05,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:24:05,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962800721] [2024-10-24 19:24:05,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962800721] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:24:05,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277523098] [2024-10-24 19:24:05,435 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-24 19:24:05,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:24:05,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:24:05,437 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:24:05,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 19:24:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:05,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:24:05,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:05,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:05,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277523098] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:05,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:24:05,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2024-10-24 19:24:05,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326096109] [2024-10-24 19:24:05,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:05,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 19:24:05,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:24:05,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 19:24:05,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-10-24 19:24:05,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-24 19:24:05,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 736 transitions, 12262 flow. Second operand has 19 states, 19 states have (on average 6.684210526315789) internal successors, (127), 19 states have internal predecessors, (127), 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 19:24:05,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:05,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-24 19:24:05,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:07,425 INFO L124 PetriNetUnfolderBase]: 2825/4726 cut-off events. [2024-10-24 19:24:07,425 INFO L125 PetriNetUnfolderBase]: For 106094/106094 co-relation queries the response was YES. [2024-10-24 19:24:07,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38297 conditions, 4726 events. 2825/4726 cut-off events. For 106094/106094 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 27754 event pairs, 44 based on Foata normal form. 18/4744 useless extension candidates. Maximal degree in co-relation 36867. Up to 1223 conditions per place. [2024-10-24 19:24:07,468 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 288 selfloop transitions, 837 changer transitions 2/1128 dead transitions. [2024-10-24 19:24:07,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 1128 transitions, 20560 flow [2024-10-24 19:24:07,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-24 19:24:07,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-10-24 19:24:07,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 360 transitions. [2024-10-24 19:24:07,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41189931350114417 [2024-10-24 19:24:07,472 INFO L175 Difference]: Start difference. First operand has 223 places, 736 transitions, 12262 flow. Second operand 38 states and 360 transitions. [2024-10-24 19:24:07,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 1128 transitions, 20560 flow [2024-10-24 19:24:08,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 1128 transitions, 19843 flow, removed 342 selfloop flow, removed 5 redundant places. [2024-10-24 19:24:08,167 INFO L231 Difference]: Finished difference. Result has 271 places, 995 transitions, 19117 flow [2024-10-24 19:24:08,168 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=11707, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=584, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=19117, PETRI_PLACES=271, PETRI_TRANSITIONS=995} [2024-10-24 19:24:08,168 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 246 predicate places. [2024-10-24 19:24:08,168 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 995 transitions, 19117 flow [2024-10-24 19:24:08,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.684210526315789) internal successors, (127), 19 states have internal predecessors, (127), 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 19:24:08,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:08,170 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:08,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-24 19:24:08,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:24:08,371 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 19:24:08,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:08,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1441668228, now seen corresponding path program 8 times [2024-10-24 19:24:08,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:24:08,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327962965] [2024-10-24 19:24:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:08,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:24:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:08,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:24:08,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327962965] [2024-10-24 19:24:08,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327962965] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:24:08,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952516719] [2024-10-24 19:24:08,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:24:08,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:24:08,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:24:08,493 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:24:08,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 19:24:08,531 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:24:08,532 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:08,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:24:08,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:08,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:08,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952516719] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:08,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:24:08,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-10-24 19:24:08,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345180837] [2024-10-24 19:24:08,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:08,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 19:24:08,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:24:08,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 19:24:08,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-10-24 19:24:08,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-24 19:24:08,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 995 transitions, 19117 flow. Second operand has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:08,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:08,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-24 19:24:08,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:10,252 INFO L124 PetriNetUnfolderBase]: 3004/5124 cut-off events. [2024-10-24 19:24:10,252 INFO L125 PetriNetUnfolderBase]: For 153578/153597 co-relation queries the response was YES. [2024-10-24 19:24:10,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47284 conditions, 5124 events. 3004/5124 cut-off events. For 153578/153597 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 31824 event pairs, 269 based on Foata normal form. 15/5133 useless extension candidates. Maximal degree in co-relation 46132. Up to 1792 conditions per place. [2024-10-24 19:24:10,378 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 402 selfloop transitions, 752 changer transitions 6/1217 dead transitions. [2024-10-24 19:24:10,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 1217 transitions, 25950 flow [2024-10-24 19:24:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 19:24:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 19:24:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 167 transitions. [2024-10-24 19:24:10,385 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.453804347826087 [2024-10-24 19:24:10,386 INFO L175 Difference]: Start difference. First operand has 271 places, 995 transitions, 19117 flow. Second operand 16 states and 167 transitions. [2024-10-24 19:24:10,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 1217 transitions, 25950 flow [2024-10-24 19:24:11,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 1217 transitions, 25724 flow, removed 93 selfloop flow, removed 6 redundant places. [2024-10-24 19:24:11,466 INFO L231 Difference]: Finished difference. Result has 291 places, 1152 transitions, 25482 flow [2024-10-24 19:24:11,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=18929, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=995, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=599, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=25482, PETRI_PLACES=291, PETRI_TRANSITIONS=1152} [2024-10-24 19:24:11,468 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 266 predicate places. [2024-10-24 19:24:11,468 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 1152 transitions, 25482 flow [2024-10-24 19:24:11,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:24:11,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:11,468 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:11,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 19:24:11,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-24 19:24:11,670 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 19:24:11,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:11,671 INFO L85 PathProgramCache]: Analyzing trace with hash -282926934, now seen corresponding path program 9 times [2024-10-24 19:24:11,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:24:11,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391924174] [2024-10-24 19:24:11,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:11,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:24:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:11,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:24:11,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391924174] [2024-10-24 19:24:11,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391924174] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:24:11,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841284962] [2024-10-24 19:24:11,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:24:11,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:24:11,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:24:11,860 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:24:11,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 19:24:11,906 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-24 19:24:11,907 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:11,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:24:11,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:11,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:12,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841284962] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:12,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:24:12,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2024-10-24 19:24:12,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208179280] [2024-10-24 19:24:12,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:12,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 19:24:12,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:24:12,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 19:24:12,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-10-24 19:24:12,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-10-24 19:24:12,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 1152 transitions, 25482 flow. Second operand has 19 states, 19 states have (on average 6.684210526315789) internal successors, (127), 19 states have internal predecessors, (127), 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 19:24:12,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:12,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-10-24 19:24:12,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:16,097 INFO L124 PetriNetUnfolderBase]: 5430/8981 cut-off events. [2024-10-24 19:24:16,097 INFO L125 PetriNetUnfolderBase]: For 329368/329368 co-relation queries the response was YES. [2024-10-24 19:24:16,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90813 conditions, 8981 events. 5430/8981 cut-off events. For 329368/329368 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 57666 event pairs, 84 based on Foata normal form. 94/9075 useless extension candidates. Maximal degree in co-relation 89287. Up to 2397 conditions per place. [2024-10-24 19:24:16,217 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 604 selfloop transitions, 1688 changer transitions 19/2312 dead transitions. [2024-10-24 19:24:16,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 2312 transitions, 55505 flow [2024-10-24 19:24:16,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-24 19:24:16,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-10-24 19:24:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 450 transitions. [2024-10-24 19:24:16,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4162812210915819 [2024-10-24 19:24:16,219 INFO L175 Difference]: Start difference. First operand has 291 places, 1152 transitions, 25482 flow. Second operand 47 states and 450 transitions. [2024-10-24 19:24:16,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 2312 transitions, 55505 flow [2024-10-24 19:24:20,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 2312 transitions, 54995 flow, removed 233 selfloop flow, removed 2 redundant places. [2024-10-24 19:24:20,071 INFO L231 Difference]: Finished difference. Result has 356 places, 2085 transitions, 53648 flow [2024-10-24 19:24:20,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=25185, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=856, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=53648, PETRI_PLACES=356, PETRI_TRANSITIONS=2085} [2024-10-24 19:24:20,073 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 331 predicate places. [2024-10-24 19:24:20,073 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 2085 transitions, 53648 flow [2024-10-24 19:24:20,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.684210526315789) internal successors, (127), 19 states have internal predecessors, (127), 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 19:24:20,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:20,073 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:20,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 19:24:20,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:24:20,274 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 19:24:20,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:20,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1105483722, now seen corresponding path program 10 times [2024-10-24 19:24:20,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:24:20,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45387802] [2024-10-24 19:24:20,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:20,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:24:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:20,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:24:20,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45387802] [2024-10-24 19:24:20,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45387802] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:24:20,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502743034] [2024-10-24 19:24:20,429 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:24:20,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:24:20,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:24:20,430 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:24:20,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 19:24:20,463 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:24:20,463 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:20,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:24:20,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:20,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:20,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502743034] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:20,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:24:20,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-10-24 19:24:20,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178541664] [2024-10-24 19:24:20,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:20,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 19:24:20,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:24:20,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 19:24:20,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2024-10-24 19:24:20,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-24 19:24:20,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 2085 transitions, 53648 flow. Second operand has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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 19:24:20,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:20,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-24 19:24:20,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:25,483 INFO L124 PetriNetUnfolderBase]: 5586/9492 cut-off events. [2024-10-24 19:24:25,483 INFO L125 PetriNetUnfolderBase]: For 401263/401272 co-relation queries the response was YES. [2024-10-24 19:24:25,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108018 conditions, 9492 events. 5586/9492 cut-off events. For 401263/401272 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 64646 event pairs, 238 based on Foata normal form. 58/9550 useless extension candidates. Maximal degree in co-relation 106084. Up to 2581 conditions per place. [2024-10-24 19:24:25,732 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 497 selfloop transitions, 1819 changer transitions 7/2425 dead transitions. [2024-10-24 19:24:25,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 2425 transitions, 66484 flow [2024-10-24 19:24:25,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-24 19:24:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-24 19:24:25,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 253 transitions. [2024-10-24 19:24:25,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-10-24 19:24:25,733 INFO L175 Difference]: Start difference. First operand has 356 places, 2085 transitions, 53648 flow. Second operand 23 states and 253 transitions. [2024-10-24 19:24:25,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 2425 transitions, 66484 flow [2024-10-24 19:24:32,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 2425 transitions, 64541 flow, removed 902 selfloop flow, removed 9 redundant places. [2024-10-24 19:24:32,562 INFO L231 Difference]: Finished difference. Result has 384 places, 2329 transitions, 65827 flow [2024-10-24 19:24:32,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=52074, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1593, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=65827, PETRI_PLACES=384, PETRI_TRANSITIONS=2329} [2024-10-24 19:24:32,564 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 359 predicate places. [2024-10-24 19:24:32,565 INFO L471 AbstractCegarLoop]: Abstraction has has 384 places, 2329 transitions, 65827 flow [2024-10-24 19:24:32,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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 19:24:32,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:32,565 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:32,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-24 19:24:32,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-24 19:24:32,766 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 19:24:32,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:32,766 INFO L85 PathProgramCache]: Analyzing trace with hash 903812650, now seen corresponding path program 11 times [2024-10-24 19:24:32,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:24:32,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92706178] [2024-10-24 19:24:32,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:32,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:24:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:32,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:24:32,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92706178] [2024-10-24 19:24:32,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92706178] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:24:32,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889071976] [2024-10-24 19:24:32,854 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 19:24:32,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:24:32,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:24:32,856 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:24:32,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 19:24:32,893 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-24 19:24:32,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:32,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:24:32,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:32,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:33,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889071976] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:33,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:24:33,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17 [2024-10-24 19:24:33,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996838719] [2024-10-24 19:24:33,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:33,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 19:24:33,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:24:33,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 19:24:33,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-24 19:24:33,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-24 19:24:33,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 2329 transitions, 65827 flow. Second operand has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 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 19:24:33,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:33,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-24 19:24:33,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:39,144 INFO L124 PetriNetUnfolderBase]: 5945/10102 cut-off events. [2024-10-24 19:24:39,145 INFO L125 PetriNetUnfolderBase]: For 364280/364315 co-relation queries the response was YES. [2024-10-24 19:24:39,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121957 conditions, 10102 events. 5945/10102 cut-off events. For 364280/364315 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 69523 event pairs, 194 based on Foata normal form. 35/10135 useless extension candidates. Maximal degree in co-relation 120058. Up to 2737 conditions per place. [2024-10-24 19:24:39,319 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 248 selfloop transitions, 2260 changer transitions 4/2614 dead transitions. [2024-10-24 19:24:39,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 2614 transitions, 77838 flow [2024-10-24 19:24:39,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-24 19:24:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-10-24 19:24:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 333 transitions. [2024-10-24 19:24:39,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41366459627329194 [2024-10-24 19:24:39,321 INFO L175 Difference]: Start difference. First operand has 384 places, 2329 transitions, 65827 flow. Second operand 35 states and 333 transitions. [2024-10-24 19:24:39,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 2614 transitions, 77838 flow [2024-10-24 19:24:47,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 2614 transitions, 77316 flow, removed 205 selfloop flow, removed 6 redundant places. [2024-10-24 19:24:47,434 INFO L231 Difference]: Finished difference. Result has 417 places, 2551 transitions, 78822 flow [2024-10-24 19:24:47,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=65300, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2044, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=78822, PETRI_PLACES=417, PETRI_TRANSITIONS=2551} [2024-10-24 19:24:47,436 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 392 predicate places. [2024-10-24 19:24:47,436 INFO L471 AbstractCegarLoop]: Abstraction has has 417 places, 2551 transitions, 78822 flow [2024-10-24 19:24:47,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 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 19:24:47,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:47,436 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:47,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-24 19:24:47,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 19:24:47,637 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:24:47,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:47,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1887676888, now seen corresponding path program 12 times [2024-10-24 19:24:47,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:24:47,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418065613] [2024-10-24 19:24:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:47,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:24:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:47,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:24:47,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418065613] [2024-10-24 19:24:47,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418065613] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:24:47,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227028183] [2024-10-24 19:24:47,808 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-24 19:24:47,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:24:47,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:24:47,809 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:24:47,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 19:24:47,852 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-24 19:24:47,852 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:47,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:24:47,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:47,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:48,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227028183] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:48,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:24:48,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-24 19:24:48,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790851615] [2024-10-24 19:24:48,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:48,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 19:24:48,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:24:48,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 19:24:48,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-10-24 19:24:48,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-24 19:24:48,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 2551 transitions, 78822 flow. Second operand has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 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 19:24:48,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:48,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-24 19:24:48,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:55,343 INFO L124 PetriNetUnfolderBase]: 6729/11458 cut-off events. [2024-10-24 19:24:55,344 INFO L125 PetriNetUnfolderBase]: For 494088/494136 co-relation queries the response was YES. [2024-10-24 19:24:55,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149994 conditions, 11458 events. 6729/11458 cut-off events. For 494088/494136 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 80588 event pairs, 651 based on Foata normal form. 80/11528 useless extension candidates. Maximal degree in co-relation 149392. Up to 4244 conditions per place. [2024-10-24 19:24:55,509 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 1339 selfloop transitions, 1520 changer transitions 0/2961 dead transitions. [2024-10-24 19:24:55,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 2961 transitions, 96406 flow [2024-10-24 19:24:55,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-24 19:24:55,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-24 19:24:55,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 289 transitions. [2024-10-24 19:24:55,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44875776397515527 [2024-10-24 19:24:55,511 INFO L175 Difference]: Start difference. First operand has 417 places, 2551 transitions, 78822 flow. Second operand 28 states and 289 transitions. [2024-10-24 19:24:55,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 2961 transitions, 96406 flow [2024-10-24 19:25:07,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 2961 transitions, 93860 flow, removed 592 selfloop flow, removed 19 redundant places. [2024-10-24 19:25:07,590 INFO L231 Difference]: Finished difference. Result has 445 places, 2824 transitions, 91519 flow [2024-10-24 19:25:07,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=76830, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=91519, PETRI_PLACES=445, PETRI_TRANSITIONS=2824} [2024-10-24 19:25:07,592 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 420 predicate places. [2024-10-24 19:25:07,592 INFO L471 AbstractCegarLoop]: Abstraction has has 445 places, 2824 transitions, 91519 flow [2024-10-24 19:25:07,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 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 19:25:07,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:07,593 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:07,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-24 19:25:07,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-24 19:25:07,793 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:25:07,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:07,794 INFO L85 PathProgramCache]: Analyzing trace with hash 408245248, now seen corresponding path program 13 times [2024-10-24 19:25:07,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:25:07,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545850863] [2024-10-24 19:25:07,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:07,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:25:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:07,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:25:07,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545850863] [2024-10-24 19:25:07,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545850863] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:25:07,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511909943] [2024-10-24 19:25:07,916 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-24 19:25:07,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:25:07,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:25:07,917 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:25:07,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 19:25:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:07,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:25:07,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:08,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:25:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:08,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511909943] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:25:08,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:25:08,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2024-10-24 19:25:08,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075436912] [2024-10-24 19:25:08,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:25:08,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 19:25:08,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:25:08,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 19:25:08,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-10-24 19:25:08,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-24 19:25:08,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 2824 transitions, 91519 flow. Second operand has 18 states, 18 states have (on average 7.055555555555555) internal successors, (127), 18 states have internal predecessors, (127), 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 19:25:08,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:08,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-24 19:25:08,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:15,862 INFO L124 PetriNetUnfolderBase]: 6856/11677 cut-off events. [2024-10-24 19:25:15,862 INFO L125 PetriNetUnfolderBase]: For 502068/502162 co-relation queries the response was YES. [2024-10-24 19:25:15,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157660 conditions, 11677 events. 6856/11677 cut-off events. For 502068/502162 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 82378 event pairs, 763 based on Foata normal form. 44/11711 useless extension candidates. Maximal degree in co-relation 157153. Up to 5038 conditions per place. [2024-10-24 19:25:16,033 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 837 selfloop transitions, 2027 changer transitions 2/2968 dead transitions. [2024-10-24 19:25:16,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 2968 transitions, 101209 flow [2024-10-24 19:25:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-24 19:25:16,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-24 19:25:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 209 transitions. [2024-10-24 19:25:16,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.432712215320911 [2024-10-24 19:25:16,035 INFO L175 Difference]: Start difference. First operand has 445 places, 2824 transitions, 91519 flow. Second operand 21 states and 209 transitions. [2024-10-24 19:25:16,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 2968 transitions, 101209 flow [2024-10-24 19:25:27,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 2968 transitions, 100508 flow, removed 124 selfloop flow, removed 5 redundant places. [2024-10-24 19:25:27,622 INFO L231 Difference]: Finished difference. Result has 471 places, 2922 transitions, 101825 flow [2024-10-24 19:25:27,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=90751, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2821, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1932, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=842, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=101825, PETRI_PLACES=471, PETRI_TRANSITIONS=2922} [2024-10-24 19:25:27,624 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 446 predicate places. [2024-10-24 19:25:27,624 INFO L471 AbstractCegarLoop]: Abstraction has has 471 places, 2922 transitions, 101825 flow [2024-10-24 19:25:27,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.055555555555555) internal successors, (127), 18 states have internal predecessors, (127), 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 19:25:27,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:27,625 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:27,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-24 19:25:27,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 19:25:27,825 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-24 19:25:27,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:27,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2006878916, now seen corresponding path program 14 times [2024-10-24 19:25:27,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:25:27,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011878983] [2024-10-24 19:25:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:27,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:25:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:27,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:25:27,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011878983] [2024-10-24 19:25:27,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011878983] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:25:27,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449358235] [2024-10-24 19:25:27,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:25:27,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:25:27,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:25:27,934 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:25:27,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-24 19:25:27,973 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:25:27,973 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:25:27,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:25:27,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:28,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:25:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:28,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449358235] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:25:28,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:25:28,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2024-10-24 19:25:28,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644083801] [2024-10-24 19:25:28,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:25:28,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 19:25:28,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:25:28,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 19:25:28,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-10-24 19:25:28,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-10-24 19:25:28,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 2922 transitions, 101825 flow. Second operand has 18 states, 18 states have (on average 7.055555555555555) internal successors, (127), 18 states have internal predecessors, (127), 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 19:25:28,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:28,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-10-24 19:25:28,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand