./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_02-simple_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/04-mutex_02-simple_nr.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 d425dfbbfb78faa29f27010b68bbdf8cfe9cd77f6a5b55b60367dae1036de9f1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 10:00:09,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 10:00:09,763 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 10:00:09,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 10:00:09,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 10:00:09,790 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 10:00:09,790 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 10:00:09,792 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 10:00:09,792 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 10:00:09,792 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 10:00:09,793 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 10:00:09,793 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 10:00:09,793 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 10:00:09,793 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 10:00:09,793 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 10:00:09,794 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 10:00:09,794 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 10:00:09,794 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 10:00:09,794 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 10:00:09,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 10:00:09,794 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 10:00:09,794 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 10:00:09,794 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 10:00:09,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 10:00:09,794 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 10:00:09,794 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 10:00:09,794 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 10:00:09,794 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 10:00:09,794 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 10:00:09,794 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 10:00:09,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 10:00:09,795 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 10:00:09,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 10:00:09,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:00:09,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 10:00:09,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 10:00:09,795 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 10:00:09,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 10:00:09,795 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 10:00:09,795 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 10:00:09,795 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 10:00:09,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 10:00:09,795 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d425dfbbfb78faa29f27010b68bbdf8cfe9cd77f6a5b55b60367dae1036de9f1 [2025-03-04 10:00:10,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 10:00:10,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 10:00:10,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 10:00:10,022 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 10:00:10,022 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 10:00:10,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_02-simple_nr.i [2025-03-04 10:00:11,177 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0b2a53ec/355d167aa47645708bba7c0f3e906b63/FLAG73c581670 [2025-03-04 10:00:11,486 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 10:00:11,488 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_02-simple_nr.i [2025-03-04 10:00:11,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0b2a53ec/355d167aa47645708bba7c0f3e906b63/FLAG73c581670 [2025-03-04 10:00:11,515 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0b2a53ec/355d167aa47645708bba7c0f3e906b63 [2025-03-04 10:00:11,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 10:00:11,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 10:00:11,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 10:00:11,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 10:00:11,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 10:00:11,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:00:11" (1/1) ... [2025-03-04 10:00:11,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b937f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11, skipping insertion in model container [2025-03-04 10:00:11,525 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:00:11" (1/1) ... [2025-03-04 10:00:11,556 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 10:00:11,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:00:11,821 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 10:00:11,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:00:11,909 INFO L204 MainTranslator]: Completed translation [2025-03-04 10:00:11,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11 WrapperNode [2025-03-04 10:00:11,910 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 10:00:11,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 10:00:11,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 10:00:11,911 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 10:00:11,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11" (1/1) ... [2025-03-04 10:00:11,924 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11" (1/1) ... [2025-03-04 10:00:11,942 INFO L138 Inliner]: procedures = 262, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 84 [2025-03-04 10:00:11,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 10:00:11,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 10:00:11,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 10:00:11,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 10:00:11,947 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11" (1/1) ... [2025-03-04 10:00:11,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11" (1/1) ... [2025-03-04 10:00:11,949 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11" (1/1) ... [2025-03-04 10:00:11,957 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [5]. The 0 writes are split as follows [0]. [2025-03-04 10:00:11,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11" (1/1) ... [2025-03-04 10:00:11,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11" (1/1) ... [2025-03-04 10:00:11,960 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11" (1/1) ... [2025-03-04 10:00:11,963 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11" (1/1) ... [2025-03-04 10:00:11,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11" (1/1) ... [2025-03-04 10:00:11,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11" (1/1) ... [2025-03-04 10:00:11,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 10:00:11,966 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 10:00:11,966 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 10:00:11,966 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 10:00:11,967 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11" (1/1) ... [2025-03-04 10:00:11,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:00:11,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:00:12,015 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 10:00:12,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 10:00:12,035 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 10:00:12,035 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 10:00:12,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 10:00:12,036 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-04 10:00:12,036 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-04 10:00:12,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 10:00:12,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 10:00:12,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 10:00:12,036 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 10:00:12,120 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 10:00:12,121 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 10:00:12,240 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 10:00:12,241 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 10:00:12,365 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 10:00:12,366 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 10:00:12,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:00:12 BoogieIcfgContainer [2025-03-04 10:00:12,366 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 10:00:12,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 10:00:12,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 10:00:12,371 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 10:00:12,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 10:00:11" (1/3) ... [2025-03-04 10:00:12,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f8820d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:00:12, skipping insertion in model container [2025-03-04 10:00:12,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:00:11" (2/3) ... [2025-03-04 10:00:12,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f8820d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:00:12, skipping insertion in model container [2025-03-04 10:00:12,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:00:12" (3/3) ... [2025-03-04 10:00:12,388 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_02-simple_nr.i [2025-03-04 10:00:12,398 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 10:00:12,399 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_02-simple_nr.i that has 2 procedures, 18 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-04 10:00:12,399 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 10:00:12,429 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-04 10:00:12,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 21 places, 17 transitions, 41 flow [2025-03-04 10:00:12,477 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-04 10:00:12,479 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 10:00:12,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 16 events. 0/16 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-03-04 10:00:12,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 17 transitions, 41 flow [2025-03-04 10:00:12,483 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 15 transitions, 36 flow [2025-03-04 10:00:12,491 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 10:00:12,504 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;@13b69c80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 10:00:12,505 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-04 10:00:12,515 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 10:00:12,515 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2025-03-04 10:00:12,515 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 10:00:12,515 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:00:12,516 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:00:12,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 10:00:12,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:00:12,521 INFO L85 PathProgramCache]: Analyzing trace with hash 233071696, now seen corresponding path program 1 times [2025-03-04 10:00:12,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:00:12,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114177397] [2025-03-04 10:00:12,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:00:12,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:00:12,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 10:00:12,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 10:00:12,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:00:12,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:00:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:00:12,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:00:12,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114177397] [2025-03-04 10:00:12,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114177397] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:00:12,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:00:12,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 10:00:12,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184651393] [2025-03-04 10:00:12,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:00:12,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:00:12,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:00:12,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:00:12,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:00:12,825 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 17 [2025-03-04 10:00:12,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:00:12,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:00:12,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 17 [2025-03-04 10:00:12,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:00:12,862 INFO L124 PetriNetUnfolderBase]: 16/48 cut-off events. [2025-03-04 10:00:12,862 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 10:00:12,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 48 events. 16/48 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 113 event pairs, 16 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 84. Up to 43 conditions per place. [2025-03-04 10:00:12,864 INFO L140 encePairwiseOnDemand]: 15/17 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2025-03-04 10:00:12,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 14 transitions, 56 flow [2025-03-04 10:00:12,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:00:12,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:00:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 24 transitions. [2025-03-04 10:00:12,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2025-03-04 10:00:12,874 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 36 flow. Second operand 3 states and 24 transitions. [2025-03-04 10:00:12,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 14 transitions, 56 flow [2025-03-04 10:00:12,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 10:00:12,878 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2025-03-04 10:00:12,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2025-03-04 10:00:12,883 INFO L279 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2025-03-04 10:00:12,884 INFO L471 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2025-03-04 10:00:12,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:00:12,887 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2025-03-04 10:00:12,888 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2025-03-04 10:00:12,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 10:00:12,891 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-04 10:00:12,894 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 10:00:12,895 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 10:00:12,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 10:00:12 BasicIcfg [2025-03-04 10:00:12,900 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 10:00:12,901 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 10:00:12,901 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 10:00:12,901 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 10:00:12,902 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:00:12" (3/4) ... [2025-03-04 10:00:12,904 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 10:00:12,907 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-03-04 10:00:12,910 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2025-03-04 10:00:12,911 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2025-03-04 10:00:12,912 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-03-04 10:00:12,912 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-03-04 10:00:12,912 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-04 10:00:12,912 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-04 10:00:12,973 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 10:00:12,974 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 10:00:12,974 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 10:00:12,975 INFO L158 Benchmark]: Toolchain (without parser) took 1454.78ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 59.3MB in the end (delta: 46.3MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2025-03-04 10:00:12,975 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:00:12,976 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.53ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 78.3MB in the end (delta: 27.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 10:00:12,976 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.60ms. Allocated memory is still 142.6MB. Free memory was 78.3MB in the beginning and 76.1MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:00:12,976 INFO L158 Benchmark]: Boogie Preprocessor took 23.47ms. Allocated memory is still 142.6MB. Free memory was 76.1MB in the beginning and 74.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:00:12,977 INFO L158 Benchmark]: IcfgBuilder took 400.09ms. Allocated memory is still 142.6MB. Free memory was 74.0MB in the beginning and 36.0MB in the end (delta: 38.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-04 10:00:12,977 INFO L158 Benchmark]: TraceAbstraction took 532.40ms. Allocated memory is still 142.6MB. Free memory was 35.2MB in the beginning and 64.7MB in the end (delta: -29.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:00:12,978 INFO L158 Benchmark]: Witness Printer took 72.87ms. Allocated memory is still 142.6MB. Free memory was 64.7MB in the beginning and 59.3MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:00:12,979 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.53ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 78.3MB in the end (delta: 27.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.60ms. Allocated memory is still 142.6MB. Free memory was 78.3MB in the beginning and 76.1MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.47ms. Allocated memory is still 142.6MB. Free memory was 76.1MB in the beginning and 74.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 400.09ms. Allocated memory is still 142.6MB. Free memory was 74.0MB in the beginning and 36.0MB in the end (delta: 38.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 532.40ms. Allocated memory is still 142.6MB. Free memory was 35.2MB in the beginning and 64.7MB in the end (delta: -29.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 72.87ms. Allocated memory is still 142.6MB. Free memory was 64.7MB in the beginning and 59.3MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 926]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 10:00:12,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE