./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/fib_safe-12.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/fib_safe-12.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 e169a35d3412f69777e600b250d6db82170a9573bed36816bd393f67ca1b5302 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:23:26,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:23:26,884 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:23:26,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:23:26,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:23:26,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:23:26,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:23:26,918 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:23:26,919 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:23:26,920 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:23:26,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:23:26,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:23:26,921 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:23:26,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:23:26,924 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:23:26,924 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:23:26,924 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:23:26,925 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:23:26,925 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:23:26,925 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:23:26,926 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:23:26,929 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:23:26,929 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:23:26,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:23:26,930 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:23:26,930 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:23:26,931 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:23:26,931 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:23:26,931 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:23:26,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:23:26,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:23:26,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:23:26,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:23:26,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:23:26,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:23:26,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:23:26,933 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:23:26,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:23:26,934 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:23:26,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:23:26,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:23:26,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:23:26,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e169a35d3412f69777e600b250d6db82170a9573bed36816bd393f67ca1b5302 [2024-10-11 19:23:27,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:23:27,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:23:27,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:23:27,199 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:23:27,199 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:23:27,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-12.i [2024-10-11 19:23:28,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:23:28,765 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:23:28,765 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_safe-12.i [2024-10-11 19:23:28,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/574b1cada/8a62a6aa26b14fd8b5bbfff4fe610fc4/FLAG45355c465 [2024-10-11 19:23:29,118 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/574b1cada/8a62a6aa26b14fd8b5bbfff4fe610fc4 [2024-10-11 19:23:29,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:23:29,121 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:23:29,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:23:29,124 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:23:29,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:23:29,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:23:29" (1/1) ... [2024-10-11 19:23:29,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e2dffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29, skipping insertion in model container [2024-10-11 19:23:29,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:23:29" (1/1) ... [2024-10-11 19:23:29,176 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:23:29,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:23:29,549 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:23:29,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:23:29,643 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:23:29,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29 WrapperNode [2024-10-11 19:23:29,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:23:29,644 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:23:29,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:23:29,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:23:29,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29" (1/1) ... [2024-10-11 19:23:29,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29" (1/1) ... [2024-10-11 19:23:29,687 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 68 [2024-10-11 19:23:29,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:23:29,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:23:29,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:23:29,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:23:29,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29" (1/1) ... [2024-10-11 19:23:29,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29" (1/1) ... [2024-10-11 19:23:29,703 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29" (1/1) ... [2024-10-11 19:23:29,720 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 19:23:29,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29" (1/1) ... [2024-10-11 19:23:29,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29" (1/1) ... [2024-10-11 19:23:29,724 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29" (1/1) ... [2024-10-11 19:23:29,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29" (1/1) ... [2024-10-11 19:23:29,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29" (1/1) ... [2024-10-11 19:23:29,739 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29" (1/1) ... [2024-10-11 19:23:29,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:23:29,745 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:23:29,746 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:23:29,746 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:23:29,747 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29" (1/1) ... [2024-10-11 19:23:29,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:23:29,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:23:29,792 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 19:23:29,799 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 19:23:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-11 19:23:29,850 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-11 19:23:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-11 19:23:29,851 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-11 19:23:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:23:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:23:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:23:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:23:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:23:29,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:23:29,853 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 19:23:30,030 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:23:30,033 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:23:30,201 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:23:30,201 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:23:30,306 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:23:30,307 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 19:23:30,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:23:30 BoogieIcfgContainer [2024-10-11 19:23:30,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:23:30,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:23:30,311 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:23:30,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:23:30,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:23:29" (1/3) ... [2024-10-11 19:23:30,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257ed6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:23:30, skipping insertion in model container [2024-10-11 19:23:30,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:23:29" (2/3) ... [2024-10-11 19:23:30,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257ed6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:23:30, skipping insertion in model container [2024-10-11 19:23:30,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:23:30" (3/3) ... [2024-10-11 19:23:30,318 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-12.i [2024-10-11 19:23:30,334 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:23:30,334 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 19:23:30,334 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:23:30,373 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:23:30,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 76 flow [2024-10-11 19:23:30,429 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2024-10-11 19:23:30,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:23:30,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 5/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2024-10-11 19:23:30,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 76 flow [2024-10-11 19:23:30,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 32 transitions, 70 flow [2024-10-11 19:23:30,451 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:23:30,458 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;@21808778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:23:30,459 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 19:23:30,476 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:23:30,480 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2024-10-11 19:23:30,480 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:23:30,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:23:30,481 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:23:30,482 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:23:30,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:23:30,487 INFO L85 PathProgramCache]: Analyzing trace with hash 563650960, now seen corresponding path program 1 times [2024-10-11 19:23:30,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:23:30,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110802029] [2024-10-11 19:23:30,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:23:30,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:23:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:23:30,778 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 19:23:30,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:23:30,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110802029] [2024-10-11 19:23:30,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110802029] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:23:30,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:23:30,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:23:30,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000450458] [2024-10-11 19:23:30,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:23:30,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:23:30,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:23:30,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:23:30,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:23:30,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-11 19:23:30,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 19:23:30,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:23:30,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-11 19:23:30,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:23:30,939 INFO L124 PetriNetUnfolderBase]: 151/292 cut-off events. [2024-10-11 19:23:30,939 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 19:23:30,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 292 events. 151/292 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 993 event pairs, 20 based on Foata normal form. 18/296 useless extension candidates. Maximal degree in co-relation 521. Up to 172 conditions per place. [2024-10-11 19:23:30,944 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 22 selfloop transitions, 2 changer transitions 1/36 dead transitions. [2024-10-11 19:23:30,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 128 flow [2024-10-11 19:23:30,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:23:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:23:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-10-11 19:23:30,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-10-11 19:23:30,960 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 67 transitions. [2024-10-11 19:23:30,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 128 flow [2024-10-11 19:23:30,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:23:30,965 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 72 flow [2024-10-11 19:23:30,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-10-11 19:23:30,972 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2024-10-11 19:23:30,972 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 72 flow [2024-10-11 19:23:30,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 19:23:30,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:23:30,973 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:23:30,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:23:30,973 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:23:30,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:23:30,974 INFO L85 PathProgramCache]: Analyzing trace with hash -488978942, now seen corresponding path program 1 times [2024-10-11 19:23:30,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:23:30,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003202237] [2024-10-11 19:23:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:23:30,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:23:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:23:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:31,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:23:31,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003202237] [2024-10-11 19:23:31,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003202237] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:23:31,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429237692] [2024-10-11 19:23:31,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:23:31,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:23:31,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:23:31,090 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:23:31,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:23:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:23:31,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 19:23:31,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:23:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:23:31,211 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:23:31,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429237692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:23:31,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 19:23:31,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-11 19:23:31,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801820644] [2024-10-11 19:23:31,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:23:31,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:23:31,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:23:31,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:23:31,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:23:31,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2024-10-11 19:23:31,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 19:23:31,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:23:31,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2024-10-11 19:23:31,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:23:31,291 INFO L124 PetriNetUnfolderBase]: 133/256 cut-off events. [2024-10-11 19:23:31,292 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-11 19:23:31,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 256 events. 133/256 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 816 event pairs, 80 based on Foata normal form. 9/248 useless extension candidates. Maximal degree in co-relation 494. Up to 204 conditions per place. [2024-10-11 19:23:31,297 INFO L140 encePairwiseOnDemand]: 32/34 looper letters, 16 selfloop transitions, 1 changer transitions 1/28 dead transitions. [2024-10-11 19:23:31,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 106 flow [2024-10-11 19:23:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:23:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:23:31,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-10-11 19:23:31,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-10-11 19:23:31,299 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 72 flow. Second operand 3 states and 54 transitions. [2024-10-11 19:23:31,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 106 flow [2024-10-11 19:23:31,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:23:31,300 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 68 flow [2024-10-11 19:23:31,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-10-11 19:23:31,302 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2024-10-11 19:23:31,302 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 68 flow [2024-10-11 19:23:31,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 19:23:31,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:23:31,303 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:23:31,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 19:23:31,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:23:31,504 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:23:31,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:23:31,505 INFO L85 PathProgramCache]: Analyzing trace with hash -488977835, now seen corresponding path program 1 times [2024-10-11 19:23:31,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:23:31,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724872242] [2024-10-11 19:23:31,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:23:31,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:23:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:23:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:31,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:23:31,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724872242] [2024-10-11 19:23:31,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724872242] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:23:31,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455167032] [2024-10-11 19:23:31,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:23:31,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:23:31,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:23:31,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:23:31,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 19:23:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:23:31,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:23:31,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:23:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:31,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:23:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:31,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455167032] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:23:31,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:23:31,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-11 19:23:31,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488999797] [2024-10-11 19:23:31,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:23:31,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 19:23:31,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:23:31,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 19:23:31,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-11 19:23:31,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-11 19:23:31,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 68 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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 19:23:31,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:23:31,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-11 19:23:31,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:23:31,874 INFO L124 PetriNetUnfolderBase]: 169/310 cut-off events. [2024-10-11 19:23:31,874 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 19:23:31,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 310 events. 169/310 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 926 event pairs, 20 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 628. Up to 118 conditions per place. [2024-10-11 19:23:31,877 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 39 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-10-11 19:23:31,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 216 flow [2024-10-11 19:23:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:23:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:23:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-10-11 19:23:31,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6127450980392157 [2024-10-11 19:23:31,881 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 68 flow. Second operand 6 states and 125 transitions. [2024-10-11 19:23:31,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 216 flow [2024-10-11 19:23:31,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:23:31,883 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 103 flow [2024-10-11 19:23:31,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2024-10-11 19:23:31,884 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2024-10-11 19:23:31,884 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 103 flow [2024-10-11 19:23:31,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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 19:23:31,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:23:31,888 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:23:31,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 19:23:32,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:23:32,089 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:23:32,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:23:32,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1932997219, now seen corresponding path program 2 times [2024-10-11 19:23:32,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:23:32,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348019214] [2024-10-11 19:23:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:23:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:23:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:23:32,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:32,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:23:32,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348019214] [2024-10-11 19:23:32,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348019214] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:23:32,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109110296] [2024-10-11 19:23:32,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:23:32,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:23:32,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:23:32,266 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:23:32,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 19:23:32,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:23:32,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:23:32,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:23:32,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:23:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:32,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:23:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:32,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109110296] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:23:32,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:23:32,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-11 19:23:32,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236044010] [2024-10-11 19:23:32,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:23:32,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 19:23:32,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:23:32,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 19:23:32,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-11 19:23:32,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-11 19:23:32,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 103 flow. Second operand has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 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 19:23:32,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:23:32,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-11 19:23:32,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:23:32,675 INFO L124 PetriNetUnfolderBase]: 277/472 cut-off events. [2024-10-11 19:23:32,676 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-10-11 19:23:32,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 472 events. 277/472 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1325 event pairs, 20 based on Foata normal form. 54/524 useless extension candidates. Maximal degree in co-relation 1159. Up to 118 conditions per place. [2024-10-11 19:23:32,682 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 75 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2024-10-11 19:23:32,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 96 transitions, 431 flow [2024-10-11 19:23:32,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 19:23:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 19:23:32,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2024-10-11 19:23:32,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-10-11 19:23:32,687 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 103 flow. Second operand 12 states and 248 transitions. [2024-10-11 19:23:32,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 96 transitions, 431 flow [2024-10-11 19:23:32,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 96 transitions, 417 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 19:23:32,692 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 173 flow [2024-10-11 19:23:32,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2024-10-11 19:23:32,693 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2024-10-11 19:23:32,694 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 173 flow [2024-10-11 19:23:32,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 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 19:23:32,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:23:32,694 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:23:32,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 19:23:32,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:23:32,899 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:23:32,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:23:32,900 INFO L85 PathProgramCache]: Analyzing trace with hash 749587747, now seen corresponding path program 3 times [2024-10-11 19:23:32,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:23:32,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570079754] [2024-10-11 19:23:32,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:23:32,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:23:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:23:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:33,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:23:33,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570079754] [2024-10-11 19:23:33,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570079754] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:23:33,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443698432] [2024-10-11 19:23:33,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:23:33,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:23:33,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:23:33,116 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:23:33,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 19:23:33,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-11 19:23:33,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:23:33,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:23:33,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:23:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:33,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:23:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:33,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443698432] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:23:33,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:23:33,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-10-11 19:23:33,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864308760] [2024-10-11 19:23:33,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:23:33,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 19:23:33,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:23:33,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 19:23:33,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-11 19:23:33,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-11 19:23:33,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 173 flow. Second operand has 25 states, 25 states have (on average 14.32) internal successors, (358), 25 states have internal predecessors, (358), 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 19:23:33,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:23:33,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-11 19:23:33,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:23:33,795 INFO L124 PetriNetUnfolderBase]: 493/796 cut-off events. [2024-10-11 19:23:33,795 INFO L125 PetriNetUnfolderBase]: For 4212/4212 co-relation queries the response was YES. [2024-10-11 19:23:33,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2303 conditions, 796 events. 493/796 cut-off events. For 4212/4212 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2126 event pairs, 20 based on Foata normal form. 108/902 useless extension candidates. Maximal degree in co-relation 2284. Up to 190 conditions per place. [2024-10-11 19:23:33,802 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 147 selfloop transitions, 23 changer transitions 0/180 dead transitions. [2024-10-11 19:23:33,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 180 transitions, 873 flow [2024-10-11 19:23:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 19:23:33,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 19:23:33,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 494 transitions. [2024-10-11 19:23:33,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6053921568627451 [2024-10-11 19:23:33,805 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 173 flow. Second operand 24 states and 494 transitions. [2024-10-11 19:23:33,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 180 transitions, 873 flow [2024-10-11 19:23:33,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 180 transitions, 801 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-10-11 19:23:33,815 INFO L231 Difference]: Finished difference. Result has 85 places, 48 transitions, 293 flow [2024-10-11 19:23:33,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=293, PETRI_PLACES=85, PETRI_TRANSITIONS=48} [2024-10-11 19:23:33,816 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 51 predicate places. [2024-10-11 19:23:33,817 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 48 transitions, 293 flow [2024-10-11 19:23:33,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.32) internal successors, (358), 25 states have internal predecessors, (358), 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 19:23:33,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:23:33,817 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:23:33,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 19:23:34,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:23:34,018 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:23:34,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:23:34,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1902521693, now seen corresponding path program 4 times [2024-10-11 19:23:34,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:23:34,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931315908] [2024-10-11 19:23:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:23:34,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:23:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:23:34,541 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:34,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:23:34,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931315908] [2024-10-11 19:23:34,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931315908] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:23:34,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988308750] [2024-10-11 19:23:34,542 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:23:34,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:23:34,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:23:34,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:23:34,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 19:23:34,637 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:23:34,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:23:34,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 19:23:34,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:23:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:34,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:23:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:35,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988308750] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:23:35,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:23:35,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 29 [2024-10-11 19:23:35,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693268650] [2024-10-11 19:23:35,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:23:35,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 19:23:35,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:23:35,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 19:23:35,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-10-11 19:23:35,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-10-11 19:23:35,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 48 transitions, 293 flow. Second operand has 29 states, 29 states have (on average 14.310344827586206) internal successors, (415), 29 states have internal predecessors, (415), 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 19:23:35,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:23:35,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-10-11 19:23:35,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:23:35,454 INFO L124 PetriNetUnfolderBase]: 565/904 cut-off events. [2024-10-11 19:23:35,454 INFO L125 PetriNetUnfolderBase]: For 9342/9342 co-relation queries the response was YES. [2024-10-11 19:23:35,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2747 conditions, 904 events. 565/904 cut-off events. For 9342/9342 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2393 event pairs, 20 based on Foata normal form. 36/938 useless extension candidates. Maximal degree in co-relation 2716. Up to 190 conditions per place. [2024-10-11 19:23:35,461 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 171 selfloop transitions, 27 changer transitions 0/208 dead transitions. [2024-10-11 19:23:35,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 208 transitions, 1033 flow [2024-10-11 19:23:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 19:23:35,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 19:23:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 566 transitions. [2024-10-11 19:23:35,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5945378151260504 [2024-10-11 19:23:35,464 INFO L175 Difference]: Start difference. First operand has 85 places, 48 transitions, 293 flow. Second operand 28 states and 566 transitions. [2024-10-11 19:23:35,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 208 transitions, 1033 flow [2024-10-11 19:23:35,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 208 transitions, 929 flow, removed 41 selfloop flow, removed 11 redundant places. [2024-10-11 19:23:35,480 INFO L231 Difference]: Finished difference. Result has 105 places, 52 transitions, 293 flow [2024-10-11 19:23:35,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=293, PETRI_PLACES=105, PETRI_TRANSITIONS=52} [2024-10-11 19:23:35,481 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 71 predicate places. [2024-10-11 19:23:35,482 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 52 transitions, 293 flow [2024-10-11 19:23:35,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 14.310344827586206) internal successors, (415), 29 states have internal predecessors, (415), 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 19:23:35,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:23:35,483 INFO L204 CegarLoopForPetriNet]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:23:35,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 19:23:35,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:23:35,684 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:23:35,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:23:35,685 INFO L85 PathProgramCache]: Analyzing trace with hash -296485085, now seen corresponding path program 5 times [2024-10-11 19:23:35,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:23:35,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834243664] [2024-10-11 19:23:35,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:23:35,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:23:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:23:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:37,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:23:37,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834243664] [2024-10-11 19:23:37,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834243664] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:23:37,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301447456] [2024-10-11 19:23:37,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 19:23:37,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:23:37,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:23:37,904 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:23:37,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 19:23:38,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-10-11 19:23:38,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:23:38,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-10-11 19:23:38,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:23:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 300 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:39,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:23:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:23:42,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301447456] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:23:42,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:23:42,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 96 [2024-10-11 19:23:42,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13008491] [2024-10-11 19:23:42,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:23:42,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-10-11 19:23:42,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:23:42,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-10-11 19:23:42,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1347, Invalid=7965, Unknown=0, NotChecked=0, Total=9312 [2024-10-11 19:23:42,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-10-11 19:23:42,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 52 transitions, 293 flow. Second operand has 97 states, 97 states have (on average 8.175257731958762) internal successors, (793), 97 states have internal predecessors, (793), 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 19:23:42,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:23:42,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-10-11 19:23:42,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:24:41,638 INFO L124 PetriNetUnfolderBase]: 41836/68126 cut-off events. [2024-10-11 19:24:41,638 INFO L125 PetriNetUnfolderBase]: For 241059/241059 co-relation queries the response was YES. [2024-10-11 19:24:41,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185166 conditions, 68126 events. 41836/68126 cut-off events. For 241059/241059 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 470692 event pairs, 70 based on Foata normal form. 0/67549 useless extension candidates. Maximal degree in co-relation 185131. Up to 8823 conditions per place. [2024-10-11 19:24:42,460 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 1030 selfloop transitions, 1701 changer transitions 1229/3964 dead transitions. [2024-10-11 19:24:42,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 3964 transitions, 26206 flow [2024-10-11 19:24:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 309 states. [2024-10-11 19:24:42,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2024-10-11 19:24:42,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 4760 transitions. [2024-10-11 19:24:42,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45307443365695793 [2024-10-11 19:24:42,481 INFO L175 Difference]: Start difference. First operand has 105 places, 52 transitions, 293 flow. Second operand 309 states and 4760 transitions. [2024-10-11 19:24:42,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 3964 transitions, 26206 flow [2024-10-11 19:24:43,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 3964 transitions, 22168 flow, removed 754 selfloop flow, removed 23 redundant places. [2024-10-11 19:24:43,180 INFO L231 Difference]: Finished difference. Result has 508 places, 1855 transitions, 11223 flow [2024-10-11 19:24:43,181 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=309, PETRI_FLOW=11223, PETRI_PLACES=508, PETRI_TRANSITIONS=1855} [2024-10-11 19:24:43,181 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 474 predicate places. [2024-10-11 19:24:43,182 INFO L471 AbstractCegarLoop]: Abstraction has has 508 places, 1855 transitions, 11223 flow [2024-10-11 19:24:43,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 8.175257731958762) internal successors, (793), 97 states have internal predecessors, (793), 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 19:24:43,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:24:43,183 INFO L204 CegarLoopForPetriNet]: trace histogram [26, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:24:43,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 19:24:43,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 19:24:43,388 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:24:43,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:24:43,389 INFO L85 PathProgramCache]: Analyzing trace with hash -735995799, now seen corresponding path program 1 times [2024-10-11 19:24:43,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:24:43,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29814547] [2024-10-11 19:24:43,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:43,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:24:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 353 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:45,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:24:45,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29814547] [2024-10-11 19:24:45,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29814547] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:24:45,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6426051] [2024-10-11 19:24:45,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:24:45,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:24:45,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:24:45,697 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:24:45,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 19:24:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:24:45,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-10-11 19:24:45,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:24:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 300 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:47,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:24:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 353 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:24:49,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6426051] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:24:49,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:24:49,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 103 [2024-10-11 19:24:49,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528852330] [2024-10-11 19:24:49,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:24:49,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-10-11 19:24:49,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:24:49,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-10-11 19:24:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1415, Invalid=9297, Unknown=0, NotChecked=0, Total=10712 [2024-10-11 19:24:49,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-10-11 19:24:49,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 1855 transitions, 11223 flow. Second operand has 104 states, 104 states have (on average 8.211538461538462) internal successors, (854), 104 states have internal predecessors, (854), 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 19:24:49,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:24:49,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-10-11 19:24:49,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand