./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 c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../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 0.2.5-?-c7c6ca5-m [2024-11-09 10:24:13,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:24:13,601 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:24:13,607 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:24:13,610 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:24:13,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:24:13,635 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:24:13,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:24:13,636 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:24:13,636 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:24:13,637 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:24:13,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:24:13,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:24:13,638 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:24:13,638 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:24:13,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:24:13,640 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:24:13,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:24:13,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:24:13,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:24:13,643 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:24:13,644 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:24:13,644 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:24:13,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:24:13,644 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:24:13,645 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:24:13,645 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:24:13,645 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:24:13,645 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:24:13,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:24:13,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:24:13,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:24:13,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:24:13,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:24:13,646 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:24:13,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:24:13,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:24:13,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:24:13,647 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:24:13,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:24:13,647 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:24:13,649 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:24:13,649 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2024-11-09 10:24:13,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:24:13,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:24:13,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:24:13,892 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:24:13,893 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:24:13,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-11-09 10:24:15,183 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:24:15,416 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:24:15,417 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-11-09 10:24:15,439 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90de99bdb/b41239a981384cc9b1da387aa9f29b11/FLAGe72fa0cc9 [2024-11-09 10:24:15,762 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90de99bdb/b41239a981384cc9b1da387aa9f29b11 [2024-11-09 10:24:15,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:24:15,766 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:24:15,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:24:15,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:24:15,771 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:24:15,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:24:15" (1/1) ... [2024-11-09 10:24:15,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4794bf78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:15, skipping insertion in model container [2024-11-09 10:24:15,773 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:24:15" (1/1) ... [2024-11-09 10:24:15,808 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:24:16,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:24:16,131 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:24:16,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:24:16,248 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:24:16,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:16 WrapperNode [2024-11-09 10:24:16,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:24:16,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:24:16,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:24:16,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:24:16,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:16" (1/1) ... [2024-11-09 10:24:16,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:16" (1/1) ... [2024-11-09 10:24:16,300 INFO L138 Inliner]: procedures = 166, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-11-09 10:24:16,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:24:16,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:24:16,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:24:16,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:24:16,314 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:16" (1/1) ... [2024-11-09 10:24:16,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:16" (1/1) ... [2024-11-09 10:24:16,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:16" (1/1) ... [2024-11-09 10:24:16,335 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 10:24:16,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:16" (1/1) ... [2024-11-09 10:24:16,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:16" (1/1) ... [2024-11-09 10:24:16,338 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:16" (1/1) ... [2024-11-09 10:24:16,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:16" (1/1) ... [2024-11-09 10:24:16,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:16" (1/1) ... [2024-11-09 10:24:16,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:16" (1/1) ... [2024-11-09 10:24:16,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:24:16,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:24:16,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:24:16,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:24:16,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:16" (1/1) ... [2024-11-09 10:24:16,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:24:16,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:24:16,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 10:24:16,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 10:24:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 10:24:16,437 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 10:24:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:24:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:24:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:24:16,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:24:16,443 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:24:16,554 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:24:16,555 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:24:16,659 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:24:16,659 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:24:16,731 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:24:16,731 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 10:24:16,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:24:16 BoogieIcfgContainer [2024-11-09 10:24:16,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:24:16,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:24:16,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:24:16,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:24:16,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:24:15" (1/3) ... [2024-11-09 10:24:16,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcc1362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:24:16, skipping insertion in model container [2024-11-09 10:24:16,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:16" (2/3) ... [2024-11-09 10:24:16,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcc1362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:24:16, skipping insertion in model container [2024-11-09 10:24:16,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:24:16" (3/3) ... [2024-11-09 10:24:16,739 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2024-11-09 10:24:16,753 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:24:16,754 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 10:24:16,754 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:24:16,805 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:24:16,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 26 transitions, 56 flow [2024-11-09 10:24:16,858 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-11-09 10:24:16,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:16,863 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 65 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. [2024-11-09 10:24:16,865 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 26 transitions, 56 flow [2024-11-09 10:24:16,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 26 transitions, 56 flow [2024-11-09 10:24:16,875 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:24:16,880 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;@783b7e0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:24:16,881 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 10:24:16,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:24:16,884 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:24:16,884 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:16,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:16,885 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:24:16,885 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:24:16,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:16,893 INFO L85 PathProgramCache]: Analyzing trace with hash 210359, now seen corresponding path program 1 times [2024-11-09 10:24:16,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:16,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272600190] [2024-11-09 10:24:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:16,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:17,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:17,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272600190] [2024-11-09 10:24:17,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272600190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:17,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:17,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:24:17,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927007438] [2024-11-09 10:24:17,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:17,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:24:17,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:17,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:24:17,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:24:17,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-11-09 10:24:17,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 26 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:17,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:17,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-11-09 10:24:17,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:17,194 INFO L124 PetriNetUnfolderBase]: 22/61 cut-off events. [2024-11-09 10:24:17,194 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:17,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 61 events. 22/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 161 event pairs, 10 based on Foata normal form. 6/58 useless extension candidates. Maximal degree in co-relation 93. Up to 40 conditions per place. [2024-11-09 10:24:17,196 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 12 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2024-11-09 10:24:17,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 68 flow [2024-11-09 10:24:17,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:24:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:24:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 33 transitions. [2024-11-09 10:24:17,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-11-09 10:24:17,209 INFO L175 Difference]: Start difference. First operand has 23 places, 26 transitions, 56 flow. Second operand 2 states and 33 transitions. [2024-11-09 10:24:17,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 68 flow [2024-11-09 10:24:17,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:24:17,212 INFO L231 Difference]: Finished difference. Result has 20 places, 20 transitions, 44 flow [2024-11-09 10:24:17,214 INFO L260 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} [2024-11-09 10:24:17,218 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2024-11-09 10:24:17,219 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 20 transitions, 44 flow [2024-11-09 10:24:17,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:17,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:17,220 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 10:24:17,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:24:17,220 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:24:17,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:17,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1972017279, now seen corresponding path program 1 times [2024-11-09 10:24:17,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:17,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744185310] [2024-11-09 10:24:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:17,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:17,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:24:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:17,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:24:17,276 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:24:17,277 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-09 10:24:17,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-09 10:24:17,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-09 10:24:17,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-09 10:24:17,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:24:17,280 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 10:24:17,282 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:24:17,282 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 10:24:17,313 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:24:17,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 45 transitions, 100 flow [2024-11-09 10:24:17,329 INFO L124 PetriNetUnfolderBase]: 12/54 cut-off events. [2024-11-09 10:24:17,329 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:24:17,331 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 143 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. [2024-11-09 10:24:17,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 45 transitions, 100 flow [2024-11-09 10:24:17,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 45 transitions, 100 flow [2024-11-09 10:24:17,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:24:17,334 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;@783b7e0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:24:17,334 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 10:24:17,335 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:24:17,335 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:24:17,335 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:17,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:17,336 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:24:17,336 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:24:17,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:17,337 INFO L85 PathProgramCache]: Analyzing trace with hash 255044, now seen corresponding path program 1 times [2024-11-09 10:24:17,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:17,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523231200] [2024-11-09 10:24:17,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:17,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:17,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:17,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523231200] [2024-11-09 10:24:17,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523231200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:17,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:17,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:24:17,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972177029] [2024-11-09 10:24:17,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:17,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:24:17,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:17,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:24:17,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:24:17,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-11-09 10:24:17,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:17,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:17,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-11-09 10:24:17,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:17,509 INFO L124 PetriNetUnfolderBase]: 298/572 cut-off events. [2024-11-09 10:24:17,509 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-09 10:24:17,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 572 events. 298/572 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2710 event pairs, 160 based on Foata normal form. 77/546 useless extension candidates. Maximal degree in co-relation 345. Up to 406 conditions per place. [2024-11-09 10:24:17,518 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 21 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2024-11-09 10:24:17,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 124 flow [2024-11-09 10:24:17,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:24:17,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:24:17,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 58 transitions. [2024-11-09 10:24:17,522 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-09 10:24:17,522 INFO L175 Difference]: Start difference. First operand has 38 places, 45 transitions, 100 flow. Second operand 2 states and 58 transitions. [2024-11-09 10:24:17,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 124 flow [2024-11-09 10:24:17,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:24:17,525 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 82 flow [2024-11-09 10:24:17,525 INFO L260 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} [2024-11-09 10:24:17,526 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2024-11-09 10:24:17,526 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 82 flow [2024-11-09 10:24:17,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:17,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:17,526 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-09 10:24:17,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:24:17,527 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:24:17,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:17,527 INFO L85 PathProgramCache]: Analyzing trace with hash 305286260, now seen corresponding path program 1 times [2024-11-09 10:24:17,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:17,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720789268] [2024-11-09 10:24:17,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:17,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:17,543 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:24:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:17,554 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:24:17,554 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:24:17,554 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-09 10:24:17,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-09 10:24:17,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-09 10:24:17,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-09 10:24:17,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-09 10:24:17,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:24:17,556 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 10:24:17,556 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:24:17,557 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 10:24:17,599 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:24:17,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 64 transitions, 146 flow [2024-11-09 10:24:17,616 INFO L124 PetriNetUnfolderBase]: 18/78 cut-off events. [2024-11-09 10:24:17,616 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 10:24:17,619 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 8. Compared 232 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. [2024-11-09 10:24:17,619 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 64 transitions, 146 flow [2024-11-09 10:24:17,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 64 transitions, 146 flow [2024-11-09 10:24:17,621 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:24:17,623 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;@783b7e0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:24:17,624 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 10:24:17,625 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:24:17,625 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:24:17,626 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:17,626 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:17,626 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:24:17,626 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:24:17,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash 318596, now seen corresponding path program 1 times [2024-11-09 10:24:17,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:17,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96255997] [2024-11-09 10:24:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:17,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:17,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:17,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96255997] [2024-11-09 10:24:17,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96255997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:17,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:17,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:24:17,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078334696] [2024-11-09 10:24:17,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:17,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:24:17,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:17,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:24:17,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:24:17,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-11-09 10:24:17,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:17,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:17,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-11-09 10:24:17,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:18,093 INFO L124 PetriNetUnfolderBase]: 2818/4503 cut-off events. [2024-11-09 10:24:18,094 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2024-11-09 10:24:18,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8137 conditions, 4503 events. 2818/4503 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 26109 event pairs, 1600 based on Foata normal form. 901/4521 useless extension candidates. Maximal degree in co-relation 1004. Up to 3466 conditions per place. [2024-11-09 10:24:18,133 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 30 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2024-11-09 10:24:18,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 182 flow [2024-11-09 10:24:18,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:24:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:24:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 83 transitions. [2024-11-09 10:24:18,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2024-11-09 10:24:18,136 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 146 flow. Second operand 2 states and 83 transitions. [2024-11-09 10:24:18,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 182 flow [2024-11-09 10:24:18,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 180 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 10:24:18,140 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 120 flow [2024-11-09 10:24:18,141 INFO L260 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} [2024-11-09 10:24:18,141 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2024-11-09 10:24:18,142 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 120 flow [2024-11-09 10:24:18,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:18,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:18,143 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:24:18,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:24:18,143 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:24:18,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:18,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1344209328, now seen corresponding path program 1 times [2024-11-09 10:24:18,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:18,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113083168] [2024-11-09 10:24:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:18,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:18,186 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:24:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:18,223 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:24:18,224 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:24:18,225 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-11-09 10:24:18,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-09 10:24:18,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-09 10:24:18,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-09 10:24:18,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-09 10:24:18,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-09 10:24:18,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:24:18,226 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 10:24:18,251 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2024-11-09 10:24:18,251 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 10:24:18,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:24:18 BasicIcfg [2024-11-09 10:24:18,264 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 10:24:18,265 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 10:24:18,265 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 10:24:18,265 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 10:24:18,266 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:24:16" (3/4) ... [2024-11-09 10:24:18,267 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 10:24:18,268 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 10:24:18,269 INFO L158 Benchmark]: Toolchain (without parser) took 2503.12ms. Allocated memory was 153.1MB in the beginning and 228.6MB in the end (delta: 75.5MB). Free memory was 78.6MB in the beginning and 76.2MB in the end (delta: 2.4MB). Peak memory consumption was 79.9MB. Max. memory is 16.1GB. [2024-11-09 10:24:18,269 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 153.1MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 10:24:18,269 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.23ms. Allocated memory is still 153.1MB. Free memory was 78.4MB in the beginning and 119.6MB in the end (delta: -41.2MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2024-11-09 10:24:18,270 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.82ms. Allocated memory was 153.1MB in the beginning and 228.6MB in the end (delta: 75.5MB). Free memory was 119.6MB in the beginning and 198.4MB in the end (delta: -78.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2024-11-09 10:24:18,270 INFO L158 Benchmark]: Boogie Preprocessor took 44.80ms. Allocated memory is still 228.6MB. Free memory was 198.4MB in the beginning and 196.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 10:24:18,270 INFO L158 Benchmark]: RCFGBuilder took 382.82ms. Allocated memory is still 228.6MB. Free memory was 196.3MB in the beginning and 177.4MB in the end (delta: 18.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 10:24:18,270 INFO L158 Benchmark]: TraceAbstraction took 1531.06ms. Allocated memory is still 228.6MB. Free memory was 176.4MB in the beginning and 76.2MB in the end (delta: 100.2MB). Peak memory consumption was 100.2MB. Max. memory is 16.1GB. [2024-11-09 10:24:18,270 INFO L158 Benchmark]: Witness Printer took 3.60ms. Allocated memory is still 228.6MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 10:24:18,271 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 153.1MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.23ms. Allocated memory is still 153.1MB. Free memory was 78.4MB in the beginning and 119.6MB in the end (delta: -41.2MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.82ms. Allocated memory was 153.1MB in the beginning and 228.6MB in the end (delta: 75.5MB). Free memory was 119.6MB in the beginning and 198.4MB in the end (delta: -78.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.80ms. Allocated memory is still 228.6MB. Free memory was 198.4MB in the beginning and 196.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 382.82ms. Allocated memory is still 228.6MB. Free memory was 196.3MB in the beginning and 177.4MB in the end (delta: 18.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1531.06ms. Allocated memory is still 228.6MB. Free memory was 176.4MB in the beginning and 76.2MB in the end (delta: 100.2MB). Peak memory consumption was 100.2MB. Max. memory is 16.1GB. * Witness Printer took 3.60ms. Allocated memory is still 228.6MB. Free memory is still 76.2MB. 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 [2024-11-09 10:24:20,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:24:20,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:24:20,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:24:20,854 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:24:20,855 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:24:20,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-11-09 10:24:22,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:24:22,554 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:24:22,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-11-09 10:24:22,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d800ec42/7027a0175feb4817aa8f1af543b38f66/FLAG8bc1c1e0c [2024-11-09 10:24:22,583 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d800ec42/7027a0175feb4817aa8f1af543b38f66 [2024-11-09 10:24:22,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:24:22,586 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:24:22,587 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:24:22,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:24:22,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:24:22,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:24:22" (1/1) ... [2024-11-09 10:24:22,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601e6e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22, skipping insertion in model container [2024-11-09 10:24:22,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:24:22" (1/1) ... [2024-11-09 10:24:22,643 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:24:22,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:24:22,981 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:24:23,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:24:23,057 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:24:23,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:23 WrapperNode [2024-11-09 10:24:23,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:24:23,059 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:24:23,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:24:23,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:24:23,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:23" (1/1) ... [2024-11-09 10:24:23,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:23" (1/1) ... [2024-11-09 10:24:23,100 INFO L138 Inliner]: procedures = 167, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2024-11-09 10:24:23,102 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:24:23,103 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:24:23,103 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:24:23,103 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:24:23,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:23" (1/1) ... [2024-11-09 10:24:23,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:23" (1/1) ... [2024-11-09 10:24:23,113 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:23" (1/1) ... [2024-11-09 10:24:23,123 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 10:24:23,123 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:23" (1/1) ... [2024-11-09 10:24:23,123 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:23" (1/1) ... [2024-11-09 10:24:23,127 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:23" (1/1) ... [2024-11-09 10:24:23,134 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:23" (1/1) ... [2024-11-09 10:24:23,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:23" (1/1) ... [2024-11-09 10:24:23,137 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:23" (1/1) ... [2024-11-09 10:24:23,143 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:24:23,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:24:23,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:24:23,146 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:24:23,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:23" (1/1) ... [2024-11-09 10:24:23,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:24:23,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:24:23,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 10:24:23,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 10:24:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 10:24:23,222 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 10:24:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:24:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-09 10:24:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:24:23,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:24:23,223 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:24:23,342 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:24:23,344 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:24:23,479 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:24:23,481 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:24:23,602 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:24:23,603 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 10:24:23,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:24:23 BoogieIcfgContainer [2024-11-09 10:24:23,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:24:23,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:24:23,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:24:23,611 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:24:23,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:24:22" (1/3) ... [2024-11-09 10:24:23,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e33909b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:24:23, skipping insertion in model container [2024-11-09 10:24:23,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:23" (2/3) ... [2024-11-09 10:24:23,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e33909b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:24:23, skipping insertion in model container [2024-11-09 10:24:23,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:24:23" (3/3) ... [2024-11-09 10:24:23,615 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2024-11-09 10:24:23,631 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:24:23,632 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 10:24:23,633 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:24:23,685 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:24:23,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 26 transitions, 56 flow [2024-11-09 10:24:23,744 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-11-09 10:24:23,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:23,747 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 65 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. [2024-11-09 10:24:23,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 26 transitions, 56 flow [2024-11-09 10:24:23,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 26 transitions, 56 flow [2024-11-09 10:24:23,760 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:24:23,769 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;@3b4e6512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:24:23,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 10:24:23,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:24:23,772 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:24:23,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:23,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:23,777 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:24:23,777 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:24:23,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:23,782 INFO L85 PathProgramCache]: Analyzing trace with hash 212345, now seen corresponding path program 1 times [2024-11-09 10:24:23,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:24:23,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505385009] [2024-11-09 10:24:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:23,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 10:24:23,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:24:23,800 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 10:24:23,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-09 10:24:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:23,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 10:24:23,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:24:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:23,877 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:24:23,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:24:23,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505385009] [2024-11-09 10:24:23,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505385009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:23,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:23,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:24:23,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862414369] [2024-11-09 10:24:23,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:23,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:24:23,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:24:23,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:24:23,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:24:23,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-11-09 10:24:23,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 26 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:23,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:23,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-11-09 10:24:23,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:23,962 INFO L124 PetriNetUnfolderBase]: 22/61 cut-off events. [2024-11-09 10:24:23,964 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:23,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 61 events. 22/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 161 event pairs, 10 based on Foata normal form. 6/58 useless extension candidates. Maximal degree in co-relation 93. Up to 40 conditions per place. [2024-11-09 10:24:23,967 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 12 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2024-11-09 10:24:23,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 68 flow [2024-11-09 10:24:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:24:23,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:24:23,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 33 transitions. [2024-11-09 10:24:23,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-11-09 10:24:23,978 INFO L175 Difference]: Start difference. First operand has 23 places, 26 transitions, 56 flow. Second operand 2 states and 33 transitions. [2024-11-09 10:24:23,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 68 flow [2024-11-09 10:24:23,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:24:23,981 INFO L231 Difference]: Finished difference. Result has 20 places, 20 transitions, 44 flow [2024-11-09 10:24:23,983 INFO L260 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} [2024-11-09 10:24:23,986 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2024-11-09 10:24:23,986 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 20 transitions, 44 flow [2024-11-09 10:24:23,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:23,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:23,986 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 10:24:23,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-09 10:24:24,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 10:24:24,188 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:24:24,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:24,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2031184191, now seen corresponding path program 1 times [2024-11-09 10:24:24,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:24:24,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377441831] [2024-11-09 10:24:24,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:24,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 10:24:24,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:24:24,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 10:24:24,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-09 10:24:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:24,253 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:24:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:24,286 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-11-09 10:24:24,286 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:24:24,288 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-09 10:24:24,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-09 10:24:24,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-09 10:24:24,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-09 10:24:24,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-09 10:24:24,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 10:24:24,492 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 10:24:24,495 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:24:24,495 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 10:24:24,527 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:24:24,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 45 transitions, 100 flow [2024-11-09 10:24:24,544 INFO L124 PetriNetUnfolderBase]: 12/54 cut-off events. [2024-11-09 10:24:24,545 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:24:24,546 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 143 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. [2024-11-09 10:24:24,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 45 transitions, 100 flow [2024-11-09 10:24:24,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 45 transitions, 100 flow [2024-11-09 10:24:24,549 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:24:24,550 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;@3b4e6512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:24:24,550 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 10:24:24,552 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:24:24,553 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:24:24,553 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:24,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:24,553 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:24:24,554 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:24:24,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:24,554 INFO L85 PathProgramCache]: Analyzing trace with hash 257030, now seen corresponding path program 1 times [2024-11-09 10:24:24,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:24:24,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109097099] [2024-11-09 10:24:24,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:24,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 10:24:24,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:24:24,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 10:24:24,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-09 10:24:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:24,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 10:24:24,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:24:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:24,601 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:24:24,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:24:24,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109097099] [2024-11-09 10:24:24,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109097099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:24,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:24,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:24:24,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107928273] [2024-11-09 10:24:24,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:24,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:24:24,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:24:24,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:24:24,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:24:24,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-11-09 10:24:24,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:24,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:24,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-11-09 10:24:24,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:24,744 INFO L124 PetriNetUnfolderBase]: 298/572 cut-off events. [2024-11-09 10:24:24,744 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-09 10:24:24,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 572 events. 298/572 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2710 event pairs, 160 based on Foata normal form. 77/546 useless extension candidates. Maximal degree in co-relation 345. Up to 406 conditions per place. [2024-11-09 10:24:24,751 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 21 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2024-11-09 10:24:24,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 124 flow [2024-11-09 10:24:24,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:24:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:24:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 58 transitions. [2024-11-09 10:24:24,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-09 10:24:24,758 INFO L175 Difference]: Start difference. First operand has 38 places, 45 transitions, 100 flow. Second operand 2 states and 58 transitions. [2024-11-09 10:24:24,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 124 flow [2024-11-09 10:24:24,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:24:24,760 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 82 flow [2024-11-09 10:24:24,760 INFO L260 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} [2024-11-09 10:24:24,761 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2024-11-09 10:24:24,761 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 82 flow [2024-11-09 10:24:24,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:24,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:24,761 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-09 10:24:24,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-09 10:24:24,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 10:24:24,965 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:24:24,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:24,966 INFO L85 PathProgramCache]: Analyzing trace with hash 2010172278, now seen corresponding path program 1 times [2024-11-09 10:24:24,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:24:24,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827757258] [2024-11-09 10:24:24,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:24,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 10:24:24,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:24:24,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 10:24:24,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-09 10:24:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:25,007 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:24:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:25,035 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-11-09 10:24:25,035 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:24:25,036 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-09 10:24:25,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-09 10:24:25,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-09 10:24:25,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-09 10:24:25,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-09 10:24:25,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-09 10:24:25,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 10:24:25,237 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 10:24:25,238 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:24:25,238 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 10:24:25,286 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:24:25,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 64 transitions, 146 flow [2024-11-09 10:24:25,307 INFO L124 PetriNetUnfolderBase]: 18/78 cut-off events. [2024-11-09 10:24:25,308 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 10:24:25,308 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 8. Compared 232 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. [2024-11-09 10:24:25,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 64 transitions, 146 flow [2024-11-09 10:24:25,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 64 transitions, 146 flow [2024-11-09 10:24:25,312 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:24:25,313 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;@3b4e6512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:24:25,314 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 10:24:25,315 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:24:25,316 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:24:25,316 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:25,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:25,316 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:24:25,316 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:24:25,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:25,317 INFO L85 PathProgramCache]: Analyzing trace with hash 320582, now seen corresponding path program 1 times [2024-11-09 10:24:25,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:24:25,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865003538] [2024-11-09 10:24:25,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:25,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 10:24:25,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:24:25,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 10:24:25,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-09 10:24:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:25,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 10:24:25,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:24:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:25,370 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:24:25,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:24:25,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865003538] [2024-11-09 10:24:25,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865003538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:25,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:25,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:24:25,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599990073] [2024-11-09 10:24:25,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:25,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:24:25,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:24:25,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:24:25,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:24:25,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-11-09 10:24:25,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:25,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:25,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-11-09 10:24:25,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:25,785 INFO L124 PetriNetUnfolderBase]: 2818/4503 cut-off events. [2024-11-09 10:24:25,786 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2024-11-09 10:24:25,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8137 conditions, 4503 events. 2818/4503 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 26109 event pairs, 1600 based on Foata normal form. 901/4521 useless extension candidates. Maximal degree in co-relation 1004. Up to 3466 conditions per place. [2024-11-09 10:24:25,821 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 30 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2024-11-09 10:24:25,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 182 flow [2024-11-09 10:24:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:24:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:24:25,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 83 transitions. [2024-11-09 10:24:25,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2024-11-09 10:24:25,826 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 146 flow. Second operand 2 states and 83 transitions. [2024-11-09 10:24:25,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 182 flow [2024-11-09 10:24:25,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 180 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 10:24:25,828 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 120 flow [2024-11-09 10:24:25,829 INFO L260 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} [2024-11-09 10:24:25,832 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2024-11-09 10:24:25,832 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 120 flow [2024-11-09 10:24:25,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:25,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:25,832 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:24:25,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-11-09 10:24:26,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 10:24:26,034 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:24:26,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:26,034 INFO L85 PathProgramCache]: Analyzing trace with hash 360676690, now seen corresponding path program 1 times [2024-11-09 10:24:26,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:24:26,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626438367] [2024-11-09 10:24:26,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:26,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 10:24:26,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:24:26,038 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 10:24:26,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-09 10:24:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:26,078 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:24:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:26,102 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-11-09 10:24:26,102 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:24:26,103 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-11-09 10:24:26,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-09 10:24:26,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-09 10:24:26,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-09 10:24:26,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-09 10:24:26,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-09 10:24:26,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-09 10:24:26,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 10:24:26,306 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 10:24:26,328 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2024-11-09 10:24:26,329 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 10:24:26,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:24:26 BasicIcfg [2024-11-09 10:24:26,338 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 10:24:26,338 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 10:24:26,338 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 10:24:26,339 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 10:24:26,339 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:24:23" (3/4) ... [2024-11-09 10:24:26,341 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 10:24:26,342 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 10:24:26,342 INFO L158 Benchmark]: Toolchain (without parser) took 3756.35ms. Allocated memory was 77.6MB in the beginning and 146.8MB in the end (delta: 69.2MB). Free memory was 37.8MB in the beginning and 81.9MB in the end (delta: -44.1MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2024-11-09 10:24:26,343 INFO L158 Benchmark]: CDTParser took 0.94ms. Allocated memory is still 77.6MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 10:24:26,343 INFO L158 Benchmark]: CACSL2BoogieTranslator took 470.55ms. Allocated memory is still 77.6MB. Free memory was 37.8MB in the beginning and 38.9MB in the end (delta: -1.1MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2024-11-09 10:24:26,343 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.76ms. Allocated memory is still 77.6MB. Free memory was 38.9MB in the beginning and 37.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 10:24:26,343 INFO L158 Benchmark]: Boogie Preprocessor took 40.36ms. Allocated memory is still 77.6MB. Free memory was 37.0MB in the beginning and 34.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 10:24:26,344 INFO L158 Benchmark]: RCFGBuilder took 460.54ms. Allocated memory was 77.6MB in the beginning and 121.6MB in the end (delta: 44.0MB). Free memory was 34.7MB in the beginning and 81.0MB in the end (delta: -46.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 10:24:26,344 INFO L158 Benchmark]: TraceAbstraction took 2730.48ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 80.0MB in the beginning and 81.9MB in the end (delta: -2.0MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2024-11-09 10:24:26,344 INFO L158 Benchmark]: Witness Printer took 3.43ms. Allocated memory is still 146.8MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 10:24:26,345 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94ms. Allocated memory is still 77.6MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 470.55ms. Allocated memory is still 77.6MB. Free memory was 37.8MB in the beginning and 38.9MB in the end (delta: -1.1MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.76ms. Allocated memory is still 77.6MB. Free memory was 38.9MB in the beginning and 37.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.36ms. Allocated memory is still 77.6MB. Free memory was 37.0MB in the beginning and 34.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 460.54ms. Allocated memory was 77.6MB in the beginning and 121.6MB in the end (delta: 44.0MB). Free memory was 34.7MB in the beginning and 81.0MB in the end (delta: -46.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2730.48ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 80.0MB in the beginning and 81.9MB in the end (delta: -2.0MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * Witness Printer took 3.43ms. Allocated memory is still 146.8MB. Free memory is still 81.9MB. 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