./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/40_barrier_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/40_barrier_vf.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5eef73b6b2655059556d731e3a5babc181132142f2417a2cf863165dd8efda84 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:29:17,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:29:17,600 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:29:17,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:29:17,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:29:17,622 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:29:17,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:29:17,623 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:29:17,623 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:29:17,623 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:29:17,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:29:17,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:29:17,624 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:29:17,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:29:17,625 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:29:17,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:29:17,625 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:29:17,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:29:17,626 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:29:17,626 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:29:17,626 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:29:17,627 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:29:17,627 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:29:17,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:29:17,627 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:29:17,628 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:29:17,628 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:29:17,628 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:29:17,628 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:29:17,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:29:17,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:29:17,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:29:17,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:29:17,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:29:17,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:29:17,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:29:17,630 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:29:17,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:29:17,630 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:29:17,631 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:29:17,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:29:17,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:29:17,633 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eef73b6b2655059556d731e3a5babc181132142f2417a2cf863165dd8efda84 [2024-10-11 19:29:17,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:29:17,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:29:17,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:29:17,878 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:29:17,878 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:29:17,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/40_barrier_vf.i [2024-10-11 19:29:19,243 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:29:19,427 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:29:19,427 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/40_barrier_vf.i [2024-10-11 19:29:19,444 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1bb42f93f/fa79b3cdb5144d38b28f35d5f2da9cf2/FLAGb381580d3 [2024-10-11 19:29:19,455 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1bb42f93f/fa79b3cdb5144d38b28f35d5f2da9cf2 [2024-10-11 19:29:19,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:29:19,458 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:29:19,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:29:19,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:29:19,467 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:29:19,471 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:29:19" (1/1) ... [2024-10-11 19:29:19,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9ccad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19, skipping insertion in model container [2024-10-11 19:29:19,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:29:19" (1/1) ... [2024-10-11 19:29:19,512 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:29:19,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:29:19,856 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:29:19,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:29:19,916 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:29:19,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19 WrapperNode [2024-10-11 19:29:19,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:29:19,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:29:19,921 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:29:19,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:29:19,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19" (1/1) ... [2024-10-11 19:29:19,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19" (1/1) ... [2024-10-11 19:29:19,966 INFO L138 Inliner]: procedures = 172, calls = 22, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 77 [2024-10-11 19:29:19,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:29:19,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:29:19,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:29:19,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:29:19,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19" (1/1) ... [2024-10-11 19:29:19,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19" (1/1) ... [2024-10-11 19:29:19,988 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19" (1/1) ... [2024-10-11 19:29:20,008 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]. [2024-10-11 19:29:20,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19" (1/1) ... [2024-10-11 19:29:20,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19" (1/1) ... [2024-10-11 19:29:20,017 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19" (1/1) ... [2024-10-11 19:29:20,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19" (1/1) ... [2024-10-11 19:29:20,021 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19" (1/1) ... [2024-10-11 19:29:20,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19" (1/1) ... [2024-10-11 19:29:20,024 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:29:20,025 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:29:20,025 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:29:20,025 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:29:20,026 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19" (1/1) ... [2024-10-11 19:29:20,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:29:20,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:29:20,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:29:20,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:29:20,111 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 19:29:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 19:29:20,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:29:20,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:29:20,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:29:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:29:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:29:20,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:29:20,113 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:29:20,225 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:29:20,227 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:29:20,405 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:29:20,406 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:29:20,526 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:29:20,526 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 19:29:20,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:29:20 BoogieIcfgContainer [2024-10-11 19:29:20,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:29:20,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:29:20,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:29:20,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:29:20,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:29:19" (1/3) ... [2024-10-11 19:29:20,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e798fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:29:20, skipping insertion in model container [2024-10-11 19:29:20,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:29:19" (2/3) ... [2024-10-11 19:29:20,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e798fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:29:20, skipping insertion in model container [2024-10-11 19:29:20,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:29:20" (3/3) ... [2024-10-11 19:29:20,535 INFO L112 eAbstractionObserver]: Analyzing ICFG 40_barrier_vf.i [2024-10-11 19:29:20,550 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:29:20,550 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 19:29:20,551 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:29:20,590 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:29:20,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 29 transitions, 62 flow [2024-10-11 19:29:20,645 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2024-10-11 19:29:20,645 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:29:20,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 33 events. 3/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-11 19:29:20,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 29 transitions, 62 flow [2024-10-11 19:29:20,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 29 transitions, 62 flow [2024-10-11 19:29:20,662 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:29:20,667 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;@482566c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:29:20,667 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 19:29:20,673 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:29:20,674 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:29:20,674 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:29:20,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:20,674 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:29:20,675 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:29:20,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:20,685 INFO L85 PathProgramCache]: Analyzing trace with hash 264479, now seen corresponding path program 1 times [2024-10-11 19:29:20,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:20,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26262759] [2024-10-11 19:29:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:20,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:29:20,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:29:20,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:29:20,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26262759] [2024-10-11 19:29:20,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26262759] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:29:20,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:29:20,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:29:20,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537397757] [2024-10-11 19:29:20,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:29:20,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:29:20,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:29:20,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:29:20,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:29:20,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-10-11 19:29:20,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 62 flow. Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:20,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:29:20,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-10-11 19:29:20,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:29:20,892 INFO L124 PetriNetUnfolderBase]: 15/66 cut-off events. [2024-10-11 19:29:20,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:29:20,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 66 events. 15/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 167 event pairs, 12 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 97. Up to 39 conditions per place. [2024-10-11 19:29:20,899 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 11 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2024-10-11 19:29:20,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 68 flow [2024-10-11 19:29:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:29:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:29:20,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 37 transitions. [2024-10-11 19:29:20,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2024-10-11 19:29:20,915 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 62 flow. Second operand 2 states and 37 transitions. [2024-10-11 19:29:20,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 68 flow [2024-10-11 19:29:20,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:29:20,920 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 46 flow [2024-10-11 19:29:20,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2024-10-11 19:29:20,925 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -5 predicate places. [2024-10-11 19:29:20,926 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 46 flow [2024-10-11 19:29:20,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:20,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:20,926 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-11 19:29:20,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:29:20,927 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:29:20,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:20,928 INFO L85 PathProgramCache]: Analyzing trace with hash -710669444, now seen corresponding path program 1 times [2024-10-11 19:29:20,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:20,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149268356] [2024-10-11 19:29:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:20,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:29:20,945 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:29:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:29:20,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:29:20,967 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:29:20,968 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-10-11 19:29:20,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-10-11 19:29:20,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-10-11 19:29:20,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-10-11 19:29:20,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:29:20,970 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 19:29:20,972 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:29:20,972 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 19:29:20,986 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:29:20,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 51 transitions, 112 flow [2024-10-11 19:29:20,996 INFO L124 PetriNetUnfolderBase]: 6/60 cut-off events. [2024-10-11 19:29:20,997 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:29:20,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 60 events. 6/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2024-10-11 19:29:20,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 51 transitions, 112 flow [2024-10-11 19:29:21,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 51 transitions, 112 flow [2024-10-11 19:29:21,001 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:29:21,002 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;@482566c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:29:21,002 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-11 19:29:21,003 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:29:21,004 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:29:21,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:29:21,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:21,004 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:29:21,004 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 19:29:21,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:21,005 INFO L85 PathProgramCache]: Analyzing trace with hash 315122, now seen corresponding path program 1 times [2024-10-11 19:29:21,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:21,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723351522] [2024-10-11 19:29:21,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:21,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:29:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:29:21,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:29:21,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723351522] [2024-10-11 19:29:21,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723351522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:29:21,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:29:21,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:29:21,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171971707] [2024-10-11 19:29:21,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:29:21,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:29:21,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:29:21,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:29:21,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:29:21,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 51 [2024-10-11 19:29:21,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 112 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:21,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:29:21,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 51 [2024-10-11 19:29:21,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:29:21,160 INFO L124 PetriNetUnfolderBase]: 307/741 cut-off events. [2024-10-11 19:29:21,160 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-11 19:29:21,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1269 conditions, 741 events. 307/741 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4301 event pairs, 256 based on Foata normal form. 114/810 useless extension candidates. Maximal degree in co-relation 844. Up to 502 conditions per place. [2024-10-11 19:29:21,171 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 19 selfloop transitions, 0 changer transitions 0/38 dead transitions. [2024-10-11 19:29:21,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 124 flow [2024-10-11 19:29:21,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:29:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:29:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 66 transitions. [2024-10-11 19:29:21,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-10-11 19:29:21,175 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 112 flow. Second operand 2 states and 66 transitions. [2024-10-11 19:29:21,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 124 flow [2024-10-11 19:29:21,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:29:21,178 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 86 flow [2024-10-11 19:29:21,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2024-10-11 19:29:21,180 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, -8 predicate places. [2024-10-11 19:29:21,180 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 86 flow [2024-10-11 19:29:21,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:21,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:21,181 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-11 19:29:21,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:29:21,182 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 19:29:21,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:21,183 INFO L85 PathProgramCache]: Analyzing trace with hash 323940451, now seen corresponding path program 1 times [2024-10-11 19:29:21,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:21,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213219209] [2024-10-11 19:29:21,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:21,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:29:21,209 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:29:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:29:21,229 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:29:21,230 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:29:21,230 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-11 19:29:21,230 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-10-11 19:29:21,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-10-11 19:29:21,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-10-11 19:29:21,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-10-11 19:29:21,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 19:29:21,231 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 19:29:21,233 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:29:21,233 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 19:29:21,269 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:29:21,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 73 transitions, 164 flow [2024-10-11 19:29:21,285 INFO L124 PetriNetUnfolderBase]: 9/87 cut-off events. [2024-10-11 19:29:21,285 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 19:29:21,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 9/87 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 269 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2024-10-11 19:29:21,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 73 transitions, 164 flow [2024-10-11 19:29:21,289 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 73 transitions, 164 flow [2024-10-11 19:29:21,290 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:29:21,290 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;@482566c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:29:21,290 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-11 19:29:21,294 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:29:21,294 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:29:21,294 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:29:21,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:21,294 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:29:21,294 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:29:21,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:21,295 INFO L85 PathProgramCache]: Analyzing trace with hash 387611, now seen corresponding path program 1 times [2024-10-11 19:29:21,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:21,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853282454] [2024-10-11 19:29:21,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:21,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:29:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:29:21,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:29:21,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853282454] [2024-10-11 19:29:21,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853282454] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:29:21,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:29:21,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:29:21,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654780806] [2024-10-11 19:29:21,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:29:21,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:29:21,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:29:21,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:29:21,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:29:21,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2024-10-11 19:29:21,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 164 flow. Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:21,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:29:21,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2024-10-11 19:29:21,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:29:21,957 INFO L124 PetriNetUnfolderBase]: 4028/7501 cut-off events. [2024-10-11 19:29:21,957 INFO L125 PetriNetUnfolderBase]: For 404/404 co-relation queries the response was YES. [2024-10-11 19:29:21,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13353 conditions, 7501 events. 4028/7501 cut-off events. For 404/404 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 57513 event pairs, 3419 based on Foata normal form. 1467/8575 useless extension candidates. Maximal degree in co-relation 3314. Up to 5597 conditions per place. [2024-10-11 19:29:22,004 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 27 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2024-10-11 19:29:22,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 55 transitions, 182 flow [2024-10-11 19:29:22,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:29:22,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:29:22,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 95 transitions. [2024-10-11 19:29:22,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6506849315068494 [2024-10-11 19:29:22,006 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 164 flow. Second operand 2 states and 95 transitions. [2024-10-11 19:29:22,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 55 transitions, 182 flow [2024-10-11 19:29:22,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 180 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 19:29:22,009 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 126 flow [2024-10-11 19:29:22,009 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=126, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-10-11 19:29:22,010 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, -11 predicate places. [2024-10-11 19:29:22,010 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 126 flow [2024-10-11 19:29:22,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:22,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:22,010 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-10-11 19:29:22,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 19:29:22,011 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-11 19:29:22,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:22,011 INFO L85 PathProgramCache]: Analyzing trace with hash 488237051, now seen corresponding path program 1 times [2024-10-11 19:29:22,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:22,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376218596] [2024-10-11 19:29:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:22,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:29:22,027 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:29:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:29:22,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:29:22,038 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:29:22,038 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-10-11 19:29:22,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-10-11 19:29:22,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-10-11 19:29:22,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-10-11 19:29:22,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-10-11 19:29:22,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-10-11 19:29:22,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 19:29:22,039 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 19:29:22,040 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:29:22,040 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-11 19:29:22,064 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:29:22,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 95 transitions, 218 flow [2024-10-11 19:29:22,073 INFO L124 PetriNetUnfolderBase]: 12/114 cut-off events. [2024-10-11 19:29:22,073 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 19:29:22,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 114 events. 12/114 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 393 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 99. Up to 5 conditions per place. [2024-10-11 19:29:22,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 95 transitions, 218 flow [2024-10-11 19:29:22,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 95 transitions, 218 flow [2024-10-11 19:29:22,076 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:29:22,076 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;@482566c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:29:22,076 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-11 19:29:22,077 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:29:22,077 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:29:22,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:29:22,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:22,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:29:22,077 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 19:29:22,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:22,078 INFO L85 PathProgramCache]: Analyzing trace with hash 481946, now seen corresponding path program 1 times [2024-10-11 19:29:22,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:22,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497784416] [2024-10-11 19:29:22,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:22,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:29:22,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:29:22,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:29:22,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497784416] [2024-10-11 19:29:22,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497784416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:29:22,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:29:22,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:29:22,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795251379] [2024-10-11 19:29:22,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:29:22,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:29:22,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:29:22,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:29:22,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:29:22,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 95 [2024-10-11 19:29:22,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 95 transitions, 218 flow. Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:22,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:29:22,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 95 [2024-10-11 19:29:22,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:29:27,373 INFO L124 PetriNetUnfolderBase]: 44790/72581 cut-off events. [2024-10-11 19:29:27,373 INFO L125 PetriNetUnfolderBase]: For 5722/5722 co-relation queries the response was YES. [2024-10-11 19:29:27,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132478 conditions, 72581 events. 44790/72581 cut-off events. For 5722/5722 co-relation queries the response was YES. Maximal size of possible extension queue 3130. Compared 647441 event pairs, 38343 based on Foata normal form. 16438/85856 useless extension candidates. Maximal degree in co-relation 13413. Up to 57351 conditions per place. [2024-10-11 19:29:27,830 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 35 selfloop transitions, 0 changer transitions 0/72 dead transitions. [2024-10-11 19:29:27,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 72 transitions, 242 flow [2024-10-11 19:29:27,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:29:27,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:29:27,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 124 transitions. [2024-10-11 19:29:27,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6526315789473685 [2024-10-11 19:29:27,833 INFO L175 Difference]: Start difference. First operand has 92 places, 95 transitions, 218 flow. Second operand 2 states and 124 transitions. [2024-10-11 19:29:27,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 72 transitions, 242 flow [2024-10-11 19:29:27,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 72 transitions, 236 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-11 19:29:27,839 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 166 flow [2024-10-11 19:29:27,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=166, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2024-10-11 19:29:27,839 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -14 predicate places. [2024-10-11 19:29:27,839 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 166 flow [2024-10-11 19:29:27,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:27,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:27,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:29:27,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 19:29:27,841 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 19:29:27,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:27,841 INFO L85 PathProgramCache]: Analyzing trace with hash 943161610, now seen corresponding path program 1 times [2024-10-11 19:29:27,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:27,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646342648] [2024-10-11 19:29:27,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:27,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:29:27,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:29:27,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:29:27,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646342648] [2024-10-11 19:29:27,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646342648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:29:27,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:29:27,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:29:27,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126122218] [2024-10-11 19:29:27,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:29:27,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:29:27,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:29:27,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:29:27,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:29:27,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 95 [2024-10-11 19:29:27,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 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) [2024-10-11 19:29:27,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:29:27,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 95 [2024-10-11 19:29:27,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:29:43,775 INFO L124 PetriNetUnfolderBase]: 139997/256015 cut-off events. [2024-10-11 19:29:43,776 INFO L125 PetriNetUnfolderBase]: For 4759/4759 co-relation queries the response was YES. [2024-10-11 19:29:44,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443264 conditions, 256015 events. 139997/256015 cut-off events. For 4759/4759 co-relation queries the response was YES. Maximal size of possible extension queue 11703. Compared 3024280 event pairs, 39119 based on Foata normal form. 9522/264730 useless extension candidates. Maximal degree in co-relation 443257. Up to 83017 conditions per place. [2024-10-11 19:29:46,224 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 99 selfloop transitions, 17 changer transitions 0/145 dead transitions. [2024-10-11 19:29:46,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 145 transitions, 569 flow [2024-10-11 19:29:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:29:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:29:46,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2024-10-11 19:29:46,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6421052631578947 [2024-10-11 19:29:46,231 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 166 flow. Second operand 4 states and 244 transitions. [2024-10-11 19:29:46,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 145 transitions, 569 flow [2024-10-11 19:29:46,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 145 transitions, 569 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:29:46,259 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 289 flow [2024-10-11 19:29:46,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2024-10-11 19:29:46,266 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -9 predicate places. [2024-10-11 19:29:46,266 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 289 flow [2024-10-11 19:29:46,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 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) [2024-10-11 19:29:46,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:46,267 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-10-11 19:29:46,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 19:29:46,267 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 19:29:46,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:46,267 INFO L85 PathProgramCache]: Analyzing trace with hash -977130476, now seen corresponding path program 1 times [2024-10-11 19:29:46,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:46,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657560146] [2024-10-11 19:29:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:46,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:29:46,291 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:29:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:29:46,300 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:29:46,300 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:29:46,300 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-11 19:29:46,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-10-11 19:29:46,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-10-11 19:29:46,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-10-11 19:29:46,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-10-11 19:29:46,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-10-11 19:29:46,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-10-11 19:29:46,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 19:29:46,302 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-11 19:29:46,302 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:29:46,302 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-11 19:29:46,335 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:29:46,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 117 transitions, 274 flow [2024-10-11 19:29:46,348 INFO L124 PetriNetUnfolderBase]: 15/141 cut-off events. [2024-10-11 19:29:46,349 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-11 19:29:46,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 141 events. 15/141 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 515 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 132. Up to 6 conditions per place. [2024-10-11 19:29:46,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 117 transitions, 274 flow [2024-10-11 19:29:46,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 117 transitions, 274 flow [2024-10-11 19:29:46,354 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:29:46,355 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;@482566c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:29:46,355 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-11 19:29:46,356 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:29:46,356 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:29:46,356 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:29:46,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:29:46,357 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:29:46,357 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-11 19:29:46,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:29:46,360 INFO L85 PathProgramCache]: Analyzing trace with hash 598127, now seen corresponding path program 1 times [2024-10-11 19:29:46,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:29:46,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946205088] [2024-10-11 19:29:46,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:29:46,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:29:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:29:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:29:46,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:29:46,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946205088] [2024-10-11 19:29:46,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946205088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:29:46,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:29:46,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:29:46,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263177199] [2024-10-11 19:29:46,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:29:46,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:29:46,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:29:46,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:29:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:29:46,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 117 [2024-10-11 19:29:46,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 117 transitions, 274 flow. Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:29:46,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:29:46,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 117 [2024-10-11 19:29:46,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand