./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:45:15,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:45:15,560 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:45:15,564 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:45:15,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:45:15,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:45:15,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:45:15,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:45:15,580 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:45:15,580 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:45:15,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:45:15,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:45:15,580 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:45:15,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:45:15,580 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:45:15,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:45:15,580 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:45:15,581 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:45:15,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:45:15,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:45:15,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:45:15,582 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:45:15,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:45:15,582 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:45:15,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:45:15,582 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:45:15,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:45:15,582 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2025-03-04 09:45:15,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:45:15,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:45:15,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:45:15,835 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:45:15,835 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:45:15,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2025-03-04 09:45:17,019 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45239f520/df11ed5bb154437886cb4ee9f8ee6fb5/FLAGc89f24cf3 [2025-03-04 09:45:17,246 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:45:17,247 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2025-03-04 09:45:17,255 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45239f520/df11ed5bb154437886cb4ee9f8ee6fb5/FLAGc89f24cf3 [2025-03-04 09:45:17,264 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45239f520/df11ed5bb154437886cb4ee9f8ee6fb5 [2025-03-04 09:45:17,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:45:17,268 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:45:17,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:45:17,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:45:17,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:45:17,273 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:45:17" (1/1) ... [2025-03-04 09:45:17,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed0eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17, skipping insertion in model container [2025-03-04 09:45:17,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:45:17" (1/1) ... [2025-03-04 09:45:17,303 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:45:17,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:45:17,492 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:45:17,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:45:17,551 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:45:17,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17 WrapperNode [2025-03-04 09:45:17,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:45:17,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:45:17,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:45:17,553 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:45:17,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17" (1/1) ... [2025-03-04 09:45:17,562 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17" (1/1) ... [2025-03-04 09:45:17,572 INFO L138 Inliner]: procedures = 166, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2025-03-04 09:45:17,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:45:17,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:45:17,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:45:17,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:45:17,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17" (1/1) ... [2025-03-04 09:45:17,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17" (1/1) ... [2025-03-04 09:45:17,582 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17" (1/1) ... [2025-03-04 09:45:17,589 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]. [2025-03-04 09:45:17,592 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17" (1/1) ... [2025-03-04 09:45:17,593 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17" (1/1) ... [2025-03-04 09:45:17,595 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17" (1/1) ... [2025-03-04 09:45:17,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17" (1/1) ... [2025-03-04 09:45:17,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17" (1/1) ... [2025-03-04 09:45:17,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17" (1/1) ... [2025-03-04 09:45:17,597 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:45:17,598 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:45:17,598 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:45:17,598 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:45:17,598 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17" (1/1) ... [2025-03-04 09:45:17,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:45:17,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:45:17,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 09:45:17,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 09:45:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-04 09:45:17,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-04 09:45:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:45:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 09:45:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:45:17,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:45:17,642 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 09:45:17,719 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:45:17,720 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:45:17,813 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 09:45:17,813 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:45:17,848 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:45:17,848 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:45:17,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:45:17 BoogieIcfgContainer [2025-03-04 09:45:17,848 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:45:17,850 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:45:17,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:45:17,853 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:45:17,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:45:17" (1/3) ... [2025-03-04 09:45:17,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2df3a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:45:17, skipping insertion in model container [2025-03-04 09:45:17,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:17" (2/3) ... [2025-03-04 09:45:17,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2df3a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:45:17, skipping insertion in model container [2025-03-04 09:45:17,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:45:17" (3/3) ... [2025-03-04 09:45:17,854 INFO L128 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2025-03-04 09:45:17,863 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:45:17,864 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28_buggy_simple_loop1_vf.i that has 2 procedures, 20 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2025-03-04 09:45:17,864 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 09:45:17,924 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:45:17,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 26 transitions, 56 flow [2025-03-04 09:45:17,967 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2025-03-04 09:45:17,968 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:45:17,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 6/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 63 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-03-04 09:45:17,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 26 transitions, 56 flow [2025-03-04 09:45:17,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 26 transitions, 56 flow [2025-03-04 09:45:17,977 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:45:17,985 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;@220e7949, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:45:17,986 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-04 09:45:17,989 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:45:17,989 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-04 09:45:17,989 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:45:17,989 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:17,990 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 09:45:17,990 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)] === [2025-03-04 09:45:17,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash 143099, now seen corresponding path program 1 times [2025-03-04 09:45:18,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:45:18,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610548210] [2025-03-04 09:45:18,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:45:18,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:45:18,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:45:18,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:45:18,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:18,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:45:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:45:18,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:45:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610548210] [2025-03-04 09:45:18,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610548210] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:45:18,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:45:18,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:45:18,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182629877] [2025-03-04 09:45:18,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:45:18,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 09:45:18,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:45:18,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 09:45:18,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 09:45:18,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 26 [2025-03-04 09:45:18,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 26 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2025-03-04 09:45:18,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:45:18,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 26 [2025-03-04 09:45:18,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:45:18,171 INFO L124 PetriNetUnfolderBase]: 20/59 cut-off events. [2025-03-04 09:45:18,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:45:18,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 59 events. 20/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 161 event pairs, 8 based on Foata normal form. 6/59 useless extension candidates. Maximal degree in co-relation 86. Up to 35 conditions per place. [2025-03-04 09:45:18,174 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 11 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2025-03-04 09:45:18,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 66 flow [2025-03-04 09:45:18,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 09:45:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-04 09:45:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 34 transitions. [2025-03-04 09:45:18,185 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2025-03-04 09:45:18,187 INFO L175 Difference]: Start difference. First operand has 23 places, 26 transitions, 56 flow. Second operand 2 states and 34 transitions. [2025-03-04 09:45:18,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 66 flow [2025-03-04 09:45:18,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 09:45:18,192 INFO L231 Difference]: Finished difference. Result has 20 places, 20 transitions, 44 flow [2025-03-04 09:45:18,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=20, PETRI_TRANSITIONS=20} [2025-03-04 09:45:18,198 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2025-03-04 09:45:18,198 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 20 transitions, 44 flow [2025-03-04 09:45:18,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2025-03-04 09:45:18,198 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:18,198 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 09:45:18,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 09:45:18,198 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)] === [2025-03-04 09:45:18,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:18,199 INFO L85 PathProgramCache]: Analyzing trace with hash -30045485, now seen corresponding path program 1 times [2025-03-04 09:45:18,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:45:18,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837809161] [2025-03-04 09:45:18,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:45:18,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:45:18,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 09:45:18,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 09:45:18,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:18,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:45:18,227 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 09:45:18,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 09:45:18,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 09:45:18,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:18,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:45:18,247 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 09:45:18,248 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 09:45:18,249 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-03-04 09:45:18,250 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-03-04 09:45:18,250 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2025-03-04 09:45:18,250 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2025-03-04 09:45:18,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 09:45:18,250 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 09:45:18,253 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 09:45:18,253 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-04 09:45:18,316 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:45:18,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 45 transitions, 100 flow [2025-03-04 09:45:18,333 INFO L124 PetriNetUnfolderBase]: 12/54 cut-off events. [2025-03-04 09:45:18,334 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 09:45:18,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 54 events. 12/54 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 136 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 41. Up to 3 conditions per place. [2025-03-04 09:45:18,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 45 transitions, 100 flow [2025-03-04 09:45:18,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 45 transitions, 100 flow [2025-03-04 09:45:18,336 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:45:18,336 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;@220e7949, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:45:18,338 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-04 09:45:18,339 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:45:18,340 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-04 09:45:18,340 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:45:18,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:18,341 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 09:45:18,341 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)] === [2025-03-04 09:45:18,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:18,341 INFO L85 PathProgramCache]: Analyzing trace with hash 187784, now seen corresponding path program 1 times [2025-03-04 09:45:18,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:45:18,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116214797] [2025-03-04 09:45:18,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:45:18,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:45:18,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:45:18,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:45:18,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:18,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:45:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:45:18,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:45:18,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116214797] [2025-03-04 09:45:18,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116214797] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:45:18,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:45:18,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:45:18,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897309505] [2025-03-04 09:45:18,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:45:18,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 09:45:18,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:45:18,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 09:45:18,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 09:45:18,370 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2025-03-04 09:45:18,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:45:18,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:45:18,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2025-03-04 09:45:18,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:45:18,486 INFO L124 PetriNetUnfolderBase]: 223/456 cut-off events. [2025-03-04 09:45:18,486 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-03-04 09:45:18,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 456 events. 223/456 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2217 event pairs, 108 based on Foata normal form. 71/473 useless extension candidates. Maximal degree in co-relation 307. Up to 300 conditions per place. [2025-03-04 09:45:18,491 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 19 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2025-03-04 09:45:18,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 120 flow [2025-03-04 09:45:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 09:45:18,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-04 09:45:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2025-03-04 09:45:18,492 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-04 09:45:18,492 INFO L175 Difference]: Start difference. First operand has 38 places, 45 transitions, 100 flow. Second operand 2 states and 60 transitions. [2025-03-04 09:45:18,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 120 flow [2025-03-04 09:45:18,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 09:45:18,493 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 82 flow [2025-03-04 09:45:18,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2025-03-04 09:45:18,493 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2025-03-04 09:45:18,493 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 82 flow [2025-03-04 09:45:18,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:45:18,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:18,494 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-03-04 09:45:18,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 09:45:18,494 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)] === [2025-03-04 09:45:18,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:18,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1064275506, now seen corresponding path program 1 times [2025-03-04 09:45:18,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:45:18,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932324112] [2025-03-04 09:45:18,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:45:18,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:45:18,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:45:18,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:45:18,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:18,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:45:18,510 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 09:45:18,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:45:18,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:45:18,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:18,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:45:18,526 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 09:45:18,526 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 09:45:18,528 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-03-04 09:45:18,528 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-03-04 09:45:18,528 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2025-03-04 09:45:18,528 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2025-03-04 09:45:18,528 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2025-03-04 09:45:18,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 09:45:18,529 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 09:45:18,529 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 09:45:18,529 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-04 09:45:18,566 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:45:18,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 64 transitions, 146 flow [2025-03-04 09:45:18,574 INFO L124 PetriNetUnfolderBase]: 18/78 cut-off events. [2025-03-04 09:45:18,574 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-04 09:45:18,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 18/78 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 220 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2025-03-04 09:45:18,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 64 transitions, 146 flow [2025-03-04 09:45:18,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 64 transitions, 146 flow [2025-03-04 09:45:18,576 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:45:18,577 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;@220e7949, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:45:18,577 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-04 09:45:18,578 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:45:18,578 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-04 09:45:18,578 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:45:18,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:18,578 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 09:45:18,578 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)] === [2025-03-04 09:45:18,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:18,578 INFO L85 PathProgramCache]: Analyzing trace with hash 251336, now seen corresponding path program 1 times [2025-03-04 09:45:18,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:45:18,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425169016] [2025-03-04 09:45:18,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:45:18,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:45:18,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:45:18,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:45:18,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:18,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:45:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:45:18,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:45:18,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425169016] [2025-03-04 09:45:18,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425169016] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:45:18,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:45:18,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:45:18,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733239791] [2025-03-04 09:45:18,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:45:18,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 09:45:18,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:45:18,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 09:45:18,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 09:45:18,596 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2025-03-04 09:45:18,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:45:18,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:45:18,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2025-03-04 09:45:18,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:45:18,859 INFO L124 PetriNetUnfolderBase]: 1773/2997 cut-off events. [2025-03-04 09:45:18,859 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2025-03-04 09:45:18,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 2997 events. 1773/2997 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 17801 event pairs, 908 based on Foata normal form. 624/3242 useless extension candidates. Maximal degree in co-relation 784. Up to 2150 conditions per place. [2025-03-04 09:45:18,881 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 27 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2025-03-04 09:45:18,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 176 flow [2025-03-04 09:45:18,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 09:45:18,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-04 09:45:18,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 86 transitions. [2025-03-04 09:45:18,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.671875 [2025-03-04 09:45:18,883 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 146 flow. Second operand 2 states and 86 transitions. [2025-03-04 09:45:18,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 176 flow [2025-03-04 09:45:18,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-03-04 09:45:18,884 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 120 flow [2025-03-04 09:45:18,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2025-03-04 09:45:18,885 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2025-03-04 09:45:18,885 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 120 flow [2025-03-04 09:45:18,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:45:18,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:18,885 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:45:18,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 09:45:18,887 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 09:45:18,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash -813398960, now seen corresponding path program 1 times [2025-03-04 09:45:18,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:45:18,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842603899] [2025-03-04 09:45:18,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:45:18,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:45:18,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:45:18,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:45:18,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:18,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:45:18,927 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 09:45:18,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:45:18,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:45:18,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:18,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:45:18,957 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 09:45:18,958 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 09:45:18,958 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2025-03-04 09:45:18,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2025-03-04 09:45:18,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2025-03-04 09:45:18,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-03-04 09:45:18,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2025-03-04 09:45:18,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2025-03-04 09:45:18,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 09:45:18,958 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 09:45:18,977 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2025-03-04 09:45:18,978 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 09:45:18,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 09:45:18 BasicIcfg [2025-03-04 09:45:18,984 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 09:45:18,984 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 09:45:18,984 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 09:45:18,984 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 09:45:18,985 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:45:17" (3/4) ... [2025-03-04 09:45:18,986 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-04 09:45:18,987 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 09:45:18,988 INFO L158 Benchmark]: Toolchain (without parser) took 1720.24ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 82.0MB in the end (delta: 28.4MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2025-03-04 09:45:18,989 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:45:18,989 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.43ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 91.3MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:45:18,989 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.16ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 89.7MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:45:18,989 INFO L158 Benchmark]: Boogie Preprocessor took 23.23ms. Allocated memory is still 142.6MB. Free memory was 89.7MB in the beginning and 88.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:45:18,989 INFO L158 Benchmark]: IcfgBuilder took 250.52ms. Allocated memory is still 142.6MB. Free memory was 88.2MB in the beginning and 71.1MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:45:18,990 INFO L158 Benchmark]: TraceAbstraction took 1134.22ms. Allocated memory is still 142.6MB. Free memory was 70.6MB in the beginning and 82.9MB in the end (delta: -12.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:45:18,990 INFO L158 Benchmark]: Witness Printer took 2.56ms. Allocated memory is still 142.6MB. Free memory was 82.0MB in the beginning and 82.0MB in the end (delta: 21.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:45:18,991 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.43ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 91.3MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.16ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 89.7MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.23ms. Allocated memory is still 142.6MB. Free memory was 89.7MB in the beginning and 88.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 250.52ms. Allocated memory is still 142.6MB. Free memory was 88.2MB in the beginning and 71.1MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1134.22ms. Allocated memory is still 142.6MB. Free memory was 70.6MB in the beginning and 82.9MB in the end (delta: -12.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.56ms. Allocated memory is still 142.6MB. Free memory was 82.0MB in the beginning and 82.0MB in the end (delta: 21.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L700] 0 pthread_t t; [L701] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [t=-1] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2025-03-04 09:45:21,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:45:21,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:45:21,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:45:21,159 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:45:21,159 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:45:21,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2025-03-04 09:45:22,360 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f9ff259b/b2277a33823f40858b0701d072e23275/FLAGa37de87aa [2025-03-04 09:45:22,581 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:45:22,582 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2025-03-04 09:45:22,594 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f9ff259b/b2277a33823f40858b0701d072e23275/FLAGa37de87aa [2025-03-04 09:45:22,920 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f9ff259b/b2277a33823f40858b0701d072e23275 [2025-03-04 09:45:22,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:45:22,923 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:45:22,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:45:22,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:45:22,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:45:22,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:45:22" (1/1) ... [2025-03-04 09:45:22,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a671b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:22, skipping insertion in model container [2025-03-04 09:45:22,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:45:22" (1/1) ... [2025-03-04 09:45:22,944 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:45:23,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:45:23,139 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:45:23,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:45:23,215 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:45:23,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:23 WrapperNode [2025-03-04 09:45:23,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:45:23,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:45:23,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:45:23,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:45:23,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:23" (1/1) ... [2025-03-04 09:45:23,231 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:23" (1/1) ... [2025-03-04 09:45:23,246 INFO L138 Inliner]: procedures = 167, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2025-03-04 09:45:23,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:45:23,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:45:23,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:45:23,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:45:23,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:23" (1/1) ... [2025-03-04 09:45:23,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:23" (1/1) ... [2025-03-04 09:45:23,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:23" (1/1) ... [2025-03-04 09:45:23,264 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]. [2025-03-04 09:45:23,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:23" (1/1) ... [2025-03-04 09:45:23,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:23" (1/1) ... [2025-03-04 09:45:23,271 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:23" (1/1) ... [2025-03-04 09:45:23,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:23" (1/1) ... [2025-03-04 09:45:23,272 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:23" (1/1) ... [2025-03-04 09:45:23,272 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:23" (1/1) ... [2025-03-04 09:45:23,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:45:23,276 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:45:23,276 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:45:23,276 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:45:23,276 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:23" (1/1) ... [2025-03-04 09:45:23,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:45:23,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:45:23,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 09:45:23,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 09:45:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-04 09:45:23,320 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-04 09:45:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:45:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:45:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:45:23,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:45:23,321 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 09:45:23,399 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:45:23,401 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:45:23,498 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 09:45:23,499 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:45:23,555 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:45:23,555 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:45:23,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:45:23 BoogieIcfgContainer [2025-03-04 09:45:23,555 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:45:23,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:45:23,560 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:45:23,565 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:45:23,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:45:22" (1/3) ... [2025-03-04 09:45:23,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d15610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:45:23, skipping insertion in model container [2025-03-04 09:45:23,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:45:23" (2/3) ... [2025-03-04 09:45:23,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d15610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:45:23, skipping insertion in model container [2025-03-04 09:45:23,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:45:23" (3/3) ... [2025-03-04 09:45:23,568 INFO L128 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2025-03-04 09:45:23,576 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:45:23,578 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28_buggy_simple_loop1_vf.i that has 2 procedures, 20 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2025-03-04 09:45:23,578 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 09:45:23,614 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:45:23,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 26 transitions, 56 flow [2025-03-04 09:45:23,657 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2025-03-04 09:45:23,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:45:23,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 6/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 63 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-03-04 09:45:23,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 26 transitions, 56 flow [2025-03-04 09:45:23,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 26 transitions, 56 flow [2025-03-04 09:45:23,666 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:45:23,673 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;@2103a710, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:45:23,673 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-04 09:45:23,675 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:45:23,675 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-04 09:45:23,675 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:45:23,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:23,675 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 09:45:23,676 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)] === [2025-03-04 09:45:23,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash 145085, now seen corresponding path program 1 times [2025-03-04 09:45:23,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:45:23,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350324744] [2025-03-04 09:45:23,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:45:23,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:23,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:45:23,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:45:23,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 09:45:23,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:45:23,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:45:23,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:23,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:45:23,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-04 09:45:23,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:45:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:45:23,771 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:45:23,772 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:45:23,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350324744] [2025-03-04 09:45:23,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350324744] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:45:23,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:45:23,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:45:23,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253857989] [2025-03-04 09:45:23,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:45:23,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 09:45:23,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:45:23,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 09:45:23,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 09:45:23,798 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 26 [2025-03-04 09:45:23,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 26 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2025-03-04 09:45:23,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:45:23,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 26 [2025-03-04 09:45:23,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:45:23,830 INFO L124 PetriNetUnfolderBase]: 20/59 cut-off events. [2025-03-04 09:45:23,830 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:45:23,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 59 events. 20/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 161 event pairs, 8 based on Foata normal form. 6/59 useless extension candidates. Maximal degree in co-relation 86. Up to 35 conditions per place. [2025-03-04 09:45:23,833 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 11 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2025-03-04 09:45:23,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 66 flow [2025-03-04 09:45:23,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 09:45:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-04 09:45:23,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 34 transitions. [2025-03-04 09:45:23,843 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2025-03-04 09:45:23,844 INFO L175 Difference]: Start difference. First operand has 23 places, 26 transitions, 56 flow. Second operand 2 states and 34 transitions. [2025-03-04 09:45:23,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 66 flow [2025-03-04 09:45:23,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 09:45:23,848 INFO L231 Difference]: Finished difference. Result has 20 places, 20 transitions, 44 flow [2025-03-04 09:45:23,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=20, PETRI_TRANSITIONS=20} [2025-03-04 09:45:23,851 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2025-03-04 09:45:23,852 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 20 transitions, 44 flow [2025-03-04 09:45:23,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2025-03-04 09:45:23,852 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:23,852 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 09:45:23,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 09:45:24,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:24,055 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)] === [2025-03-04 09:45:24,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:24,056 INFO L85 PathProgramCache]: Analyzing trace with hash 29121427, now seen corresponding path program 1 times [2025-03-04 09:45:24,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:45:24,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151613551] [2025-03-04 09:45:24,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:45:24,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:24,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:45:24,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:45:24,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 09:45:24,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 09:45:24,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 09:45:24,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:24,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:45:24,100 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 09:45:24,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 09:45:24,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 09:45:24,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:24,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:45:24,121 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-03-04 09:45:24,122 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 09:45:24,123 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-03-04 09:45:24,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-03-04 09:45:24,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2025-03-04 09:45:24,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2025-03-04 09:45:24,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 09:45:24,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:24,331 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 09:45:24,333 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 09:45:24,333 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-04 09:45:24,378 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:45:24,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 45 transitions, 100 flow [2025-03-04 09:45:24,388 INFO L124 PetriNetUnfolderBase]: 12/54 cut-off events. [2025-03-04 09:45:24,389 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 09:45:24,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 54 events. 12/54 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 136 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 41. Up to 3 conditions per place. [2025-03-04 09:45:24,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 45 transitions, 100 flow [2025-03-04 09:45:24,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 45 transitions, 100 flow [2025-03-04 09:45:24,391 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:45:24,391 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;@2103a710, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:45:24,391 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-04 09:45:24,393 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:45:24,393 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-04 09:45:24,393 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:45:24,393 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:24,393 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 09:45:24,393 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)] === [2025-03-04 09:45:24,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:24,393 INFO L85 PathProgramCache]: Analyzing trace with hash 189770, now seen corresponding path program 1 times [2025-03-04 09:45:24,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:45:24,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255076602] [2025-03-04 09:45:24,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:45:24,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:24,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:45:24,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:45:24,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 09:45:24,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:45:24,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:45:24,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:24,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:45:24,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-04 09:45:24,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:45:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:45:24,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:45:24,444 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:45:24,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255076602] [2025-03-04 09:45:24,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255076602] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:45:24,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:45:24,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:45:24,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664261421] [2025-03-04 09:45:24,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:45:24,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 09:45:24,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:45:24,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 09:45:24,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 09:45:24,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2025-03-04 09:45:24,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:45:24,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:45:24,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2025-03-04 09:45:24,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:45:24,566 INFO L124 PetriNetUnfolderBase]: 223/456 cut-off events. [2025-03-04 09:45:24,566 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-03-04 09:45:24,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 456 events. 223/456 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2217 event pairs, 108 based on Foata normal form. 71/473 useless extension candidates. Maximal degree in co-relation 307. Up to 300 conditions per place. [2025-03-04 09:45:24,574 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 19 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2025-03-04 09:45:24,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 120 flow [2025-03-04 09:45:24,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 09:45:24,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-04 09:45:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2025-03-04 09:45:24,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-04 09:45:24,576 INFO L175 Difference]: Start difference. First operand has 38 places, 45 transitions, 100 flow. Second operand 2 states and 60 transitions. [2025-03-04 09:45:24,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 120 flow [2025-03-04 09:45:24,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 09:45:24,578 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 82 flow [2025-03-04 09:45:24,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2025-03-04 09:45:24,579 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2025-03-04 09:45:24,579 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 82 flow [2025-03-04 09:45:24,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:45:24,580 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:24,580 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-03-04 09:45:24,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 09:45:24,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:24,783 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)] === [2025-03-04 09:45:24,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:24,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1525805772, now seen corresponding path program 1 times [2025-03-04 09:45:24,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:45:24,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664897046] [2025-03-04 09:45:24,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:45:24,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:24,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:45:24,787 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:45:24,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 09:45:24,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:45:24,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:45:24,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:24,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:45:24,839 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 09:45:24,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:45:24,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:45:24,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:24,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:45:24,860 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-03-04 09:45:24,860 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 09:45:24,860 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-03-04 09:45:24,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-03-04 09:45:24,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2025-03-04 09:45:24,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2025-03-04 09:45:24,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2025-03-04 09:45:24,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 09:45:25,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:25,061 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 09:45:25,062 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 09:45:25,062 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-04 09:45:25,092 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:45:25,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 64 transitions, 146 flow [2025-03-04 09:45:25,110 INFO L124 PetriNetUnfolderBase]: 18/78 cut-off events. [2025-03-04 09:45:25,110 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-04 09:45:25,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 18/78 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 220 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2025-03-04 09:45:25,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 64 transitions, 146 flow [2025-03-04 09:45:25,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 64 transitions, 146 flow [2025-03-04 09:45:25,113 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:45:25,113 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;@2103a710, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:45:25,113 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-04 09:45:25,114 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:45:25,114 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-04 09:45:25,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:45:25,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:25,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 09:45:25,114 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)] === [2025-03-04 09:45:25,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:25,115 INFO L85 PathProgramCache]: Analyzing trace with hash 253322, now seen corresponding path program 1 times [2025-03-04 09:45:25,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:45:25,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440601936] [2025-03-04 09:45:25,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:45:25,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:25,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:45:25,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:45:25,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 09:45:25,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:45:25,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:45:25,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:25,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:45:25,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-04 09:45:25,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:45:25,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:45:25,159 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:45:25,159 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:45:25,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440601936] [2025-03-04 09:45:25,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440601936] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:45:25,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:45:25,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:45:25,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600619931] [2025-03-04 09:45:25,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:45:25,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 09:45:25,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:45:25,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 09:45:25,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 09:45:25,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2025-03-04 09:45:25,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:45:25,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:45:25,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2025-03-04 09:45:25,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:45:25,421 INFO L124 PetriNetUnfolderBase]: 1773/2997 cut-off events. [2025-03-04 09:45:25,421 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2025-03-04 09:45:25,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 2997 events. 1773/2997 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 17801 event pairs, 908 based on Foata normal form. 624/3242 useless extension candidates. Maximal degree in co-relation 784. Up to 2150 conditions per place. [2025-03-04 09:45:25,443 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 27 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2025-03-04 09:45:25,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 176 flow [2025-03-04 09:45:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 09:45:25,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-04 09:45:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 86 transitions. [2025-03-04 09:45:25,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.671875 [2025-03-04 09:45:25,448 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 146 flow. Second operand 2 states and 86 transitions. [2025-03-04 09:45:25,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 176 flow [2025-03-04 09:45:25,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-03-04 09:45:25,450 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 120 flow [2025-03-04 09:45:25,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2025-03-04 09:45:25,450 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2025-03-04 09:45:25,450 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 120 flow [2025-03-04 09:45:25,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:45:25,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:45:25,451 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:45:25,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 09:45:25,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:25,651 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 09:45:25,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:45:25,652 INFO L85 PathProgramCache]: Analyzing trace with hash 891487058, now seen corresponding path program 1 times [2025-03-04 09:45:25,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:45:25,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010181412] [2025-03-04 09:45:25,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:45:25,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:25,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:45:25,654 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:45:25,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 09:45:25,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:45:25,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:45:25,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:25,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:45:25,701 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 09:45:25,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:45:25,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:45:25,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:45:25,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:45:25,717 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-03-04 09:45:25,717 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 09:45:25,717 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2025-03-04 09:45:25,717 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2025-03-04 09:45:25,717 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2025-03-04 09:45:25,717 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-03-04 09:45:25,717 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2025-03-04 09:45:25,717 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2025-03-04 09:45:25,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 09:45:25,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:45:25,918 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 09:45:25,938 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2025-03-04 09:45:25,938 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 09:45:25,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 09:45:25 BasicIcfg [2025-03-04 09:45:25,944 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 09:45:25,945 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 09:45:25,945 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 09:45:25,945 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 09:45:25,946 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:45:23" (3/4) ... [2025-03-04 09:45:25,947 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-04 09:45:25,948 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 09:45:25,948 INFO L158 Benchmark]: Toolchain (without parser) took 3025.17ms. Allocated memory was 83.9MB in the beginning and 134.2MB in the end (delta: 50.3MB). Free memory was 58.2MB in the beginning and 75.4MB in the end (delta: -17.2MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2025-03-04 09:45:25,948 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 62.0MB in the beginning and 62.0MB in the end (delta: 37.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:45:25,950 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.78ms. Allocated memory is still 83.9MB. Free memory was 58.2MB in the beginning and 38.5MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:45:25,950 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.07ms. Allocated memory is still 83.9MB. Free memory was 38.5MB in the beginning and 36.8MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:45:25,950 INFO L158 Benchmark]: Boogie Preprocessor took 28.20ms. Allocated memory is still 83.9MB. Free memory was 36.8MB in the beginning and 35.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:45:25,951 INFO L158 Benchmark]: IcfgBuilder took 279.79ms. Allocated memory is still 83.9MB. Free memory was 35.3MB in the beginning and 54.0MB in the end (delta: -18.7MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2025-03-04 09:45:25,951 INFO L158 Benchmark]: TraceAbstraction took 2384.05ms. Allocated memory was 83.9MB in the beginning and 134.2MB in the end (delta: 50.3MB). Free memory was 53.4MB in the beginning and 75.4MB in the end (delta: -22.0MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2025-03-04 09:45:25,951 INFO L158 Benchmark]: Witness Printer took 2.28ms. Allocated memory is still 134.2MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:45:25,952 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 62.0MB in the beginning and 62.0MB in the end (delta: 37.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.78ms. Allocated memory is still 83.9MB. Free memory was 58.2MB in the beginning and 38.5MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.07ms. Allocated memory is still 83.9MB. Free memory was 38.5MB in the beginning and 36.8MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.20ms. Allocated memory is still 83.9MB. Free memory was 36.8MB in the beginning and 35.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 279.79ms. Allocated memory is still 83.9MB. Free memory was 35.3MB in the beginning and 54.0MB in the end (delta: -18.7MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2384.05ms. Allocated memory was 83.9MB in the beginning and 134.2MB in the end (delta: 50.3MB). Free memory was 53.4MB in the beginning and 75.4MB in the end (delta: -22.0MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * Witness Printer took 2.28ms. Allocated memory is still 134.2MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L700] 0 pthread_t t; [L701] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [t=0] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i