./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c --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/weaver/parallel-bluetooth.wvr.c -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 cad856450cf6e95f9e7427e37ad4e3c8d32c703bbc90760a7f99cf9b3d00a8f5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 10:08:57,046 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 10:08:57,100 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 10:08:57,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 10:08:57,108 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 10:08:57,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 10:08:57,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 10:08:57,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 10:08:57,131 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 10:08:57,131 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 10:08:57,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 10:08:57,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 10:08:57,132 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 10:08:57,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 10:08:57,132 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 10:08:57,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 10:08:57,132 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 10:08:57,132 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 10:08:57,132 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 10:08:57,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 10:08:57,132 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 10:08:57,133 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 10:08:57,133 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 10:08:57,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 10:08:57,133 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 10:08:57,133 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 10:08:57,133 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 10:08:57,133 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 10:08:57,133 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 10:08:57,133 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 10:08:57,133 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 10:08:57,134 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 10:08:57,134 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 10:08:57,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:08:57,134 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 10:08:57,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 10:08:57,134 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 10:08:57,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 10:08:57,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 10:08:57,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 10:08:57,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 10:08:57,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 10:08:57,134 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 -> cad856450cf6e95f9e7427e37ad4e3c8d32c703bbc90760a7f99cf9b3d00a8f5 [2025-03-04 10:08:57,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 10:08:57,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 10:08:57,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 10:08:57,355 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 10:08:57,355 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 10:08:57,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2025-03-04 10:08:58,568 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9efeda3b9/ec12e3aa239243a7be120f053ed03100/FLAGe420e982c [2025-03-04 10:08:58,824 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 10:08:58,826 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2025-03-04 10:08:58,833 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9efeda3b9/ec12e3aa239243a7be120f053ed03100/FLAGe420e982c [2025-03-04 10:08:58,852 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9efeda3b9/ec12e3aa239243a7be120f053ed03100 [2025-03-04 10:08:58,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 10:08:58,856 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 10:08:58,858 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 10:08:58,858 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 10:08:58,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 10:08:58,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:08:58" (1/1) ... [2025-03-04 10:08:58,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4514ddeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:58, skipping insertion in model container [2025-03-04 10:08:58,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:08:58" (1/1) ... [2025-03-04 10:08:58,876 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 10:08:58,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:08:59,002 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 10:08:59,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:08:59,030 INFO L204 MainTranslator]: Completed translation [2025-03-04 10:08:59,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:59 WrapperNode [2025-03-04 10:08:59,030 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 10:08:59,031 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 10:08:59,031 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 10:08:59,031 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 10:08:59,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:59" (1/1) ... [2025-03-04 10:08:59,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:59" (1/1) ... [2025-03-04 10:08:59,057 INFO L138 Inliner]: procedures = 18, calls = 17, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 115 [2025-03-04 10:08:59,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 10:08:59,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 10:08:59,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 10:08:59,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 10:08:59,063 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:59" (1/1) ... [2025-03-04 10:08:59,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:59" (1/1) ... [2025-03-04 10:08:59,065 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:59" (1/1) ... [2025-03-04 10:08:59,072 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 10:08:59,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:59" (1/1) ... [2025-03-04 10:08:59,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:59" (1/1) ... [2025-03-04 10:08:59,077 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:59" (1/1) ... [2025-03-04 10:08:59,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:59" (1/1) ... [2025-03-04 10:08:59,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:59" (1/1) ... [2025-03-04 10:08:59,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:59" (1/1) ... [2025-03-04 10:08:59,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 10:08:59,084 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 10:08:59,084 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 10:08:59,084 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 10:08:59,085 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:59" (1/1) ... [2025-03-04 10:08:59,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:08:59,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:08:59,111 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 10:08:59,113 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 10:08:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 10:08:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 10:08:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 10:08:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 10:08:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 10:08:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 10:08:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 10:08:59,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 10:08:59,131 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 10:08:59,193 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 10:08:59,196 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 10:08:59,394 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 10:08:59,394 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 10:08:59,527 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 10:08:59,527 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 10:08:59,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:08:59 BoogieIcfgContainer [2025-03-04 10:08:59,527 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 10:08:59,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 10:08:59,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 10:08:59,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 10:08:59,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 10:08:58" (1/3) ... [2025-03-04 10:08:59,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f28608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:08:59, skipping insertion in model container [2025-03-04 10:08:59,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:08:59" (2/3) ... [2025-03-04 10:08:59,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f28608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:08:59, skipping insertion in model container [2025-03-04 10:08:59,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:08:59" (3/3) ... [2025-03-04 10:08:59,534 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2025-03-04 10:08:59,544 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 10:08:59,545 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-bluetooth.wvr.c that has 3 procedures, 47 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 10:08:59,545 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 10:08:59,593 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 10:08:59,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 49 transitions, 112 flow [2025-03-04 10:08:59,653 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2025-03-04 10:08:59,656 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 10:08:59,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 3/47 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2025-03-04 10:08:59,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 49 transitions, 112 flow [2025-03-04 10:08:59,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 46 transitions, 104 flow [2025-03-04 10:08:59,674 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 10:08:59,685 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;@17987844, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 10:08:59,686 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-04 10:08:59,704 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 10:08:59,705 INFO L124 PetriNetUnfolderBase]: 3/43 cut-off events. [2025-03-04 10:08:59,705 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 10:08:59,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:08:59,706 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:08:59,706 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-04 10:08:59,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:08:59,711 INFO L85 PathProgramCache]: Analyzing trace with hash 516593948, now seen corresponding path program 1 times [2025-03-04 10:08:59,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:08:59,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861522221] [2025-03-04 10:08:59,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:08:59,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:08:59,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 10:08:59,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 10:08:59,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:08:59,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:09:00,005 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 10:09:00,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:09:00,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861522221] [2025-03-04 10:09:00,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861522221] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:09:00,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:09:00,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:09:00,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284248263] [2025-03-04 10:09:00,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:09:00,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:09:00,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:09:00,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:09:00,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:09:00,028 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2025-03-04 10:09:00,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 10:09:00,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:09:00,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2025-03-04 10:09:00,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:09:00,202 INFO L124 PetriNetUnfolderBase]: 206/440 cut-off events. [2025-03-04 10:09:00,203 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-03-04 10:09:00,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 440 events. 206/440 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1904 event pairs, 74 based on Foata normal form. 13/424 useless extension candidates. Maximal degree in co-relation 743. Up to 223 conditions per place. [2025-03-04 10:09:00,208 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2025-03-04 10:09:00,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 228 flow [2025-03-04 10:09:00,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:09:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:09:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2025-03-04 10:09:00,220 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-03-04 10:09:00,221 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 104 flow. Second operand 3 states and 91 transitions. [2025-03-04 10:09:00,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 228 flow [2025-03-04 10:09:00,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 10:09:00,230 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 117 flow [2025-03-04 10:09:00,232 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2025-03-04 10:09:00,235 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2025-03-04 10:09:00,235 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 117 flow [2025-03-04 10:09:00,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 10:09:00,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:09:00,236 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:09:00,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 10:09:00,236 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-04 10:09:00,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:09:00,237 INFO L85 PathProgramCache]: Analyzing trace with hash -145273121, now seen corresponding path program 1 times [2025-03-04 10:09:00,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:09:00,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417604965] [2025-03-04 10:09:00,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:09:00,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:09:00,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-04 10:09:00,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 10:09:00,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:09:00,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:09:00,309 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 10:09:00,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:09:00,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417604965] [2025-03-04 10:09:00,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417604965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:09:00,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:09:00,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:09:00,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451611269] [2025-03-04 10:09:00,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:09:00,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:09:00,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:09:00,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:09:00,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:09:00,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2025-03-04 10:09:00,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 10:09:00,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:09:00,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2025-03-04 10:09:00,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:09:00,466 INFO L124 PetriNetUnfolderBase]: 346/680 cut-off events. [2025-03-04 10:09:00,466 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2025-03-04 10:09:00,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 680 events. 346/680 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3097 event pairs, 104 based on Foata normal form. 0/628 useless extension candidates. Maximal degree in co-relation 691. Up to 448 conditions per place. [2025-03-04 10:09:00,473 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 51 selfloop transitions, 7 changer transitions 2/67 dead transitions. [2025-03-04 10:09:00,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 290 flow [2025-03-04 10:09:00,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:09:00,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:09:00,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2025-03-04 10:09:00,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2025-03-04 10:09:00,475 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 117 flow. Second operand 3 states and 90 transitions. [2025-03-04 10:09:00,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 290 flow [2025-03-04 10:09:00,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 10:09:00,479 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 153 flow [2025-03-04 10:09:00,479 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2025-03-04 10:09:00,479 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2025-03-04 10:09:00,479 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 153 flow [2025-03-04 10:09:00,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 10:09:00,480 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:09:00,480 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:09:00,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 10:09:00,480 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-04 10:09:00,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:09:00,481 INFO L85 PathProgramCache]: Analyzing trace with hash 354715561, now seen corresponding path program 2 times [2025-03-04 10:09:00,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:09:00,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86172168] [2025-03-04 10:09:00,481 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:09:00,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:09:00,495 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 1 equivalence classes. [2025-03-04 10:09:00,511 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 10:09:00,511 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 10:09:00,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:09:00,662 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 10:09:00,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:09:00,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86172168] [2025-03-04 10:09:00,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86172168] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:09:00,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:09:00,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 10:09:00,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107886273] [2025-03-04 10:09:00,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:09:00,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 10:09:00,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:09:00,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 10:09:00,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-04 10:09:00,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2025-03-04 10:09:00,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 10:09:00,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:09:00,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2025-03-04 10:09:00,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:09:00,874 INFO L124 PetriNetUnfolderBase]: 431/941 cut-off events. [2025-03-04 10:09:00,874 INFO L125 PetriNetUnfolderBase]: For 493/493 co-relation queries the response was YES. [2025-03-04 10:09:00,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2215 conditions, 941 events. 431/941 cut-off events. For 493/493 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5145 event pairs, 42 based on Foata normal form. 47/980 useless extension candidates. Maximal degree in co-relation 1321. Up to 278 conditions per place. [2025-03-04 10:09:00,882 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 74 selfloop transitions, 18 changer transitions 11/110 dead transitions. [2025-03-04 10:09:00,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 110 transitions, 555 flow [2025-03-04 10:09:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 10:09:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 10:09:00,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2025-03-04 10:09:00,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5374149659863946 [2025-03-04 10:09:00,883 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 153 flow. Second operand 6 states and 158 transitions. [2025-03-04 10:09:00,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 110 transitions, 555 flow [2025-03-04 10:09:00,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 110 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 10:09:00,889 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 302 flow [2025-03-04 10:09:00,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2025-03-04 10:09:00,891 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2025-03-04 10:09:00,891 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 302 flow [2025-03-04 10:09:00,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 10:09:00,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:09:00,891 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:09:00,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 10:09:00,891 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-04 10:09:00,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:09:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash -262418989, now seen corresponding path program 3 times [2025-03-04 10:09:00,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:09:00,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103436299] [2025-03-04 10:09:00,892 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:09:00,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:09:00,904 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 1 equivalence classes. [2025-03-04 10:09:00,918 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 10:09:00,918 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 10:09:00,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:09:01,094 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 10:09:01,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:09:01,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103436299] [2025-03-04 10:09:01,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103436299] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:09:01,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:09:01,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 10:09:01,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025725356] [2025-03-04 10:09:01,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:09:01,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:09:01,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:09:01,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:09:01,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 10:09:01,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2025-03-04 10:09:01,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 10:09:01,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:09:01,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2025-03-04 10:09:01,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:09:01,259 INFO L124 PetriNetUnfolderBase]: 342/871 cut-off events. [2025-03-04 10:09:01,260 INFO L125 PetriNetUnfolderBase]: For 871/877 co-relation queries the response was YES. [2025-03-04 10:09:01,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2317 conditions, 871 events. 342/871 cut-off events. For 871/877 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5194 event pairs, 227 based on Foata normal form. 1/863 useless extension candidates. Maximal degree in co-relation 1723. Up to 495 conditions per place. [2025-03-04 10:09:01,264 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 47 selfloop transitions, 0 changer transitions 25/86 dead transitions. [2025-03-04 10:09:01,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 86 transitions, 542 flow [2025-03-04 10:09:01,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:09:01,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:09:01,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2025-03-04 10:09:01,265 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2025-03-04 10:09:01,265 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 302 flow. Second operand 4 states and 108 transitions. [2025-03-04 10:09:01,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 86 transitions, 542 flow [2025-03-04 10:09:01,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 542 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 10:09:01,269 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 296 flow [2025-03-04 10:09:01,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2025-03-04 10:09:01,271 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2025-03-04 10:09:01,271 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 296 flow [2025-03-04 10:09:01,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 10:09:01,272 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:09:01,272 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:09:01,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 10:09:01,272 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-04 10:09:01,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:09:01,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1611749032, now seen corresponding path program 1 times [2025-03-04 10:09:01,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:09:01,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707088926] [2025-03-04 10:09:01,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:09:01,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:09:01,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-04 10:09:01,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-04 10:09:01,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:09:01,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:09:01,304 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 10:09:01,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:09:01,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707088926] [2025-03-04 10:09:01,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707088926] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:09:01,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:09:01,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:09:01,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159921256] [2025-03-04 10:09:01,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:09:01,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:09:01,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:09:01,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:09:01,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:09:01,309 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2025-03-04 10:09:01,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 10:09:01,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:09:01,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2025-03-04 10:09:01,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:09:01,434 INFO L124 PetriNetUnfolderBase]: 334/743 cut-off events. [2025-03-04 10:09:01,434 INFO L125 PetriNetUnfolderBase]: For 1014/1014 co-relation queries the response was YES. [2025-03-04 10:09:01,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2108 conditions, 743 events. 334/743 cut-off events. For 1014/1014 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3734 event pairs, 172 based on Foata normal form. 17/752 useless extension candidates. Maximal degree in co-relation 2096. Up to 441 conditions per place. [2025-03-04 10:09:01,439 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 61 selfloop transitions, 9 changer transitions 3/79 dead transitions. [2025-03-04 10:09:01,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 519 flow [2025-03-04 10:09:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:09:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:09:01,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2025-03-04 10:09:01,440 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5986394557823129 [2025-03-04 10:09:01,440 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 296 flow. Second operand 3 states and 88 transitions. [2025-03-04 10:09:01,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 519 flow [2025-03-04 10:09:01,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 505 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-03-04 10:09:01,444 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 340 flow [2025-03-04 10:09:01,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2025-03-04 10:09:01,445 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2025-03-04 10:09:01,445 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 340 flow [2025-03-04 10:09:01,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 10:09:01,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:09:01,445 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:09:01,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 10:09:01,445 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-04 10:09:01,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:09:01,446 INFO L85 PathProgramCache]: Analyzing trace with hash 5300336, now seen corresponding path program 1 times [2025-03-04 10:09:01,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:09:01,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654464657] [2025-03-04 10:09:01,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:09:01,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:09:01,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-04 10:09:01,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-04 10:09:01,476 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:09:01,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:09:01,713 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 10:09:01,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:09:01,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654464657] [2025-03-04 10:09:01,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654464657] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:09:01,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:09:01,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 10:09:01,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592049727] [2025-03-04 10:09:01,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:09:01,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 10:09:01,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:09:01,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 10:09:01,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 10:09:01,715 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2025-03-04 10:09:01,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 340 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 10:09:01,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:09:01,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2025-03-04 10:09:01,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:09:01,859 INFO L124 PetriNetUnfolderBase]: 246/631 cut-off events. [2025-03-04 10:09:01,859 INFO L125 PetriNetUnfolderBase]: For 951/957 co-relation queries the response was YES. [2025-03-04 10:09:01,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1775 conditions, 631 events. 246/631 cut-off events. For 951/957 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3398 event pairs, 42 based on Foata normal form. 3/629 useless extension candidates. Maximal degree in co-relation 1763. Up to 296 conditions per place. [2025-03-04 10:09:01,863 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2025-03-04 10:09:01,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 85 transitions, 585 flow [2025-03-04 10:09:01,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 10:09:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 10:09:01,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2025-03-04 10:09:01,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2025-03-04 10:09:01,864 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 340 flow. Second operand 7 states and 154 transitions. [2025-03-04 10:09:01,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 85 transitions, 585 flow [2025-03-04 10:09:01,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 543 flow, removed 11 selfloop flow, removed 2 redundant places. [2025-03-04 10:09:01,868 INFO L231 Difference]: Finished difference. Result has 65 places, 0 transitions, 0 flow [2025-03-04 10:09:01,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=65, PETRI_TRANSITIONS=0} [2025-03-04 10:09:01,869 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 15 predicate places. [2025-03-04 10:09:01,870 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 0 transitions, 0 flow [2025-03-04 10:09:01,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 10:09:01,872 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2025-03-04 10:09:01,873 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-03-04 10:09:01,874 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-04 10:09:01,874 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-04 10:09:01,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 10:09:01,874 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2025-03-04 10:09:01,876 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 10:09:01,876 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 10:09:01,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 10:09:01 BasicIcfg [2025-03-04 10:09:01,882 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 10:09:01,883 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 10:09:01,883 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 10:09:01,883 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 10:09:01,884 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:08:59" (3/4) ... [2025-03-04 10:09:01,885 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 10:09:01,887 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-04 10:09:01,888 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-04 10:09:01,890 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2025-03-04 10:09:01,891 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-03-04 10:09:01,891 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-04 10:09:01,891 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-04 10:09:01,891 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-04 10:09:01,939 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 10:09:01,939 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 10:09:01,940 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 10:09:01,940 INFO L158 Benchmark]: Toolchain (without parser) took 3084.47ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 71.1MB in the end (delta: 40.3MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2025-03-04 10:09:01,940 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:09:01,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.14ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 100.0MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:09:01,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.71ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 98.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:09:01,941 INFO L158 Benchmark]: Boogie Preprocessor took 25.11ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 97.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:09:01,941 INFO L158 Benchmark]: IcfgBuilder took 443.68ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 66.7MB in the end (delta: 29.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 10:09:01,941 INFO L158 Benchmark]: TraceAbstraction took 2352.99ms. Allocated memory is still 142.6MB. Free memory was 66.3MB in the beginning and 76.4MB in the end (delta: -10.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:09:01,941 INFO L158 Benchmark]: Witness Printer took 56.73ms. Allocated memory is still 142.6MB. Free memory was 76.4MB in the beginning and 71.1MB in the end (delta: 5.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:09:01,942 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.14ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 100.0MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.71ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 98.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.11ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 97.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 443.68ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 66.7MB in the end (delta: 29.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2352.99ms. Allocated memory is still 142.6MB. Free memory was 66.3MB in the beginning and 76.4MB in the end (delta: -10.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 56.73ms. Allocated memory is still 142.6MB. Free memory was 76.4MB in the beginning and 71.1MB in the end (delta: 5.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 66]: 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 5 procedures, 71 locations, 4 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: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 168 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 157 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 661 IncrementalHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 8 mSDtfsCounter, 661 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=340occurred in iteration=5, InterpolantAutomatonStates: 26, 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, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 235 NumberOfCodeBlocks, 235 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 674 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 10:09:01,953 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