./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_54-pt_rwlock_ww.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed 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_54-pt_rwlock_ww.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 a0d4dc1bad36ea6a944d96610a1da4f49d6f4e54f23122f87b052f14d480b584 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:13:21,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:13:21,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:13:21,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:13:21,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:13:21,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:13:21,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:13:21,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:13:21,140 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:13:21,140 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:13:21,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:13:21,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:13:21,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:13:21,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:13:21,141 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:13:21,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:13:21,141 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:13:21,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:13:21,141 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:13:21,141 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:13:21,142 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:13:21,142 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:13:21,142 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:13:21,142 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:13:21,142 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:13:21,142 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:13:21,142 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:13:21,142 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:13:21,142 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:13:21,142 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:13:21,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:13:21,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:13:21,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:13:21,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:13:21,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:13:21,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:13:21,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:13:21,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:13:21,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:13:21,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:13:21,144 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:13:21,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:13:21,144 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 -> a0d4dc1bad36ea6a944d96610a1da4f49d6f4e54f23122f87b052f14d480b584 [2025-03-09 01:13:21,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:13:21,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:13:21,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:13:21,359 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:13:21,359 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:13:21,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_54-pt_rwlock_ww.i [2025-03-09 01:13:22,507 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c840325/416f77a9f2064d6fb8625b692d015275/FLAG619426366 [2025-03-09 01:13:22,764 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:13:22,765 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_54-pt_rwlock_ww.i [2025-03-09 01:13:22,775 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c840325/416f77a9f2064d6fb8625b692d015275/FLAG619426366 [2025-03-09 01:13:23,065 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c840325/416f77a9f2064d6fb8625b692d015275 [2025-03-09 01:13:23,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:13:23,068 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:13:23,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:13:23,069 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:13:23,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:13:23,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:13:23" (1/1) ... [2025-03-09 01:13:23,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aeeef48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23, skipping insertion in model container [2025-03-09 01:13:23,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:13:23" (1/1) ... [2025-03-09 01:13:23,094 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:13:23,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:13:23,429 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:13:23,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:13:23,521 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:13:23,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23 WrapperNode [2025-03-09 01:13:23,523 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:13:23,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:13:23,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:13:23,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:13:23,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23" (1/1) ... [2025-03-09 01:13:23,539 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23" (1/1) ... [2025-03-09 01:13:23,555 INFO L138 Inliner]: procedures = 262, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2025-03-09 01:13:23,555 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:13:23,556 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:13:23,556 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:13:23,556 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:13:23,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23" (1/1) ... [2025-03-09 01:13:23,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23" (1/1) ... [2025-03-09 01:13:23,564 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23" (1/1) ... [2025-03-09 01:13:23,579 INFO L175 MemorySlicer]: Split 11 memory accesses to 1 slices as follows [11]. 100 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [11]. The 0 writes are split as follows [0]. [2025-03-09 01:13:23,579 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23" (1/1) ... [2025-03-09 01:13:23,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23" (1/1) ... [2025-03-09 01:13:23,586 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23" (1/1) ... [2025-03-09 01:13:23,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23" (1/1) ... [2025-03-09 01:13:23,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23" (1/1) ... [2025-03-09 01:13:23,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23" (1/1) ... [2025-03-09 01:13:23,589 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:13:23,590 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:13:23,590 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:13:23,590 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:13:23,590 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23" (1/1) ... [2025-03-09 01:13:23,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:13:23,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:13:23,611 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) [2025-03-09 01:13:23,613 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 [2025-03-09 01:13:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2025-03-09 01:13:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2025-03-09 01:13:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:13:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-09 01:13:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-09 01:13:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:13:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:13:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:13:23,630 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 01:13:23,713 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:13:23,714 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:13:23,803 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:13:23,803 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:13:23,876 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:13:23,876 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:13:23,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:13:23 BoogieIcfgContainer [2025-03-09 01:13:23,877 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:13:23,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:13:23,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:13:23,881 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:13:23,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:13:23" (1/3) ... [2025-03-09 01:13:23,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba76f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:13:23, skipping insertion in model container [2025-03-09 01:13:23,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:13:23" (2/3) ... [2025-03-09 01:13:23,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba76f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:13:23, skipping insertion in model container [2025-03-09 01:13:23,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:13:23" (3/3) ... [2025-03-09 01:13:23,882 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_54-pt_rwlock_ww.i [2025-03-09 01:13:23,892 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:13:23,893 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_54-pt_rwlock_ww.i that has 2 procedures, 18 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-09 01:13:23,893 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:13:23,922 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-09 01:13:23,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 21 places, 17 transitions, 41 flow [2025-03-09 01:13:23,977 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-09 01:13:23,980 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 01:13:23,982 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. [2025-03-09 01:13:23,982 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 17 transitions, 41 flow [2025-03-09 01:13:23,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 15 transitions, 36 flow [2025-03-09 01:13:23,990 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:13:24,005 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;@6c745f5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:13:24,005 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-09 01:13:24,014 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:13:24,014 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2025-03-09 01:13:24,014 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 01:13:24,014 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:13:24,015 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:13:24,015 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-09 01:13:24,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:13:24,019 INFO L85 PathProgramCache]: Analyzing trace with hash -424026384, now seen corresponding path program 1 times [2025-03-09 01:13:24,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:13:24,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142526083] [2025-03-09 01:13:24,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:13:24,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:13:24,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 01:13:24,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:13:24,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:13:24,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:13:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:13:24,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:13:24,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142526083] [2025-03-09 01:13:24,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142526083] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:13:24,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:13:24,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:13:24,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999530451] [2025-03-09 01:13:24,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:13:24,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:13:24,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:13:24,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:13:24,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:13:24,377 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 17 [2025-03-09 01:13:24,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2025-03-09 01:13:24,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:13:24,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 17 [2025-03-09 01:13:24,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:13:24,416 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2025-03-09 01:13:24,416 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:13:24,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 7/18 useless extension candidates. Maximal degree in co-relation 19. Up to 8 conditions per place. [2025-03-09 01:13:24,418 INFO L140 encePairwiseOnDemand]: 13/17 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2025-03-09 01:13:24,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 9 transitions, 37 flow [2025-03-09 01:13:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:13:24,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:13:24,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2025-03-09 01:13:24,426 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2025-03-09 01:13:24,427 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 36 flow. Second operand 3 states and 27 transitions. [2025-03-09 01:13:24,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 9 transitions, 37 flow [2025-03-09 01:13:24,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 9 transitions, 36 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:13:24,430 INFO L231 Difference]: Finished difference. Result has 13 places, 0 transitions, 0 flow [2025-03-09 01:13:24,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=13, PETRI_TRANSITIONS=0} [2025-03-09 01:13:24,435 INFO L279 CegarLoopForPetriNet]: 19 programPoint places, -6 predicate places. [2025-03-09 01:13:24,435 INFO L471 AbstractCegarLoop]: Abstraction has has 13 places, 0 transitions, 0 flow [2025-03-09 01:13:24,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2025-03-09 01:13:24,437 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2025-03-09 01:13:24,437 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2025-03-09 01:13:24,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:13:24,437 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-09 01:13:24,440 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 01:13:24,440 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 01:13:24,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 01:13:24 BasicIcfg [2025-03-09 01:13:24,444 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 01:13:24,445 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 01:13:24,445 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 01:13:24,445 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 01:13:24,446 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:13:23" (3/4) ... [2025-03-09 01:13:24,447 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 01:13:24,449 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-03-09 01:13:24,452 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2025-03-09 01:13:24,452 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-09 01:13:24,452 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-09 01:13:24,452 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-09 01:13:24,452 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-09 01:13:24,507 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 01:13:24,508 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 01:13:24,508 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 01:13:24,508 INFO L158 Benchmark]: Toolchain (without parser) took 1440.89ms. Allocated memory is still 167.8MB. Free memory was 131.6MB in the beginning and 120.3MB in the end (delta: 11.3MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2025-03-09 01:13:24,509 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 01:13:24,509 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.35ms. Allocated memory is still 167.8MB. Free memory was 131.3MB in the beginning and 104.4MB in the end (delta: 26.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 01:13:24,510 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.83ms. Allocated memory is still 167.8MB. Free memory was 104.4MB in the beginning and 102.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 01:13:24,510 INFO L158 Benchmark]: Boogie Preprocessor took 33.51ms. Allocated memory is still 167.8MB. Free memory was 102.3MB in the beginning and 101.0MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 01:13:24,511 INFO L158 Benchmark]: IcfgBuilder took 287.08ms. Allocated memory is still 167.8MB. Free memory was 101.0MB in the beginning and 80.6MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 01:13:24,511 INFO L158 Benchmark]: TraceAbstraction took 566.69ms. Allocated memory is still 167.8MB. Free memory was 80.1MB in the beginning and 125.4MB in the end (delta: -45.3MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. [2025-03-09 01:13:24,511 INFO L158 Benchmark]: Witness Printer took 63.04ms. Allocated memory is still 167.8MB. Free memory was 125.4MB in the beginning and 120.3MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 01:13:24,512 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 116.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 454.35ms. Allocated memory is still 167.8MB. Free memory was 131.3MB in the beginning and 104.4MB in the end (delta: 26.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.83ms. Allocated memory is still 167.8MB. Free memory was 104.4MB in the beginning and 102.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.51ms. Allocated memory is still 167.8MB. Free memory was 102.3MB in the beginning and 101.0MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 287.08ms. Allocated memory is still 167.8MB. Free memory was 101.0MB in the beginning and 80.6MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 566.69ms. Allocated memory is still 167.8MB. Free memory was 80.1MB in the beginning and 125.4MB in the end (delta: -45.3MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. * Witness Printer took 63.04ms. Allocated memory is still 167.8MB. Free memory was 125.4MB in the beginning and 120.3MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 927]: 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, 24 edges, 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: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 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, 0.2s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 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! [2025-03-09 01:13:24,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE