./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 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_22-deref_read.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 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:16:35,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:16:35,628 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 14:16:35,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:16:35,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:16:35,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:16:35,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:16:35,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:16:35,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:16:35,658 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:16:35,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:16:35,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:16:35,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:16:35,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:16:35,659 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:16:35,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:16:35,660 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:16:35,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:16:35,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:16:35,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:16:35,660 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:16:35,660 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:16:35,660 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:16:35,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:16:35,661 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:16:35,661 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:16:35,661 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:16:35,661 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:16:35,661 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:16:35,661 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:16:35,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:16:35,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:16:35,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:16:35,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:16:35,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:16:35,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:16:35,662 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:16:35,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:16:35,662 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:16:35,662 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:16:35,662 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:16:35,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:16:35,662 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 -> 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54 [2025-03-17 14:16:35,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:16:35,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:16:35,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:16:35,917 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:16:35,917 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:16:35,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i [2025-03-17 14:16:37,085 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dbe377f7/7adf20370ff545cb8081de81f61f0599/FLAGf79d5c58d [2025-03-17 14:16:37,366 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:16:37,367 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i [2025-03-17 14:16:37,383 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dbe377f7/7adf20370ff545cb8081de81f61f0599/FLAGf79d5c58d [2025-03-17 14:16:37,395 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dbe377f7/7adf20370ff545cb8081de81f61f0599 [2025-03-17 14:16:37,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:16:37,398 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:16:37,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:16:37,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:16:37,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:16:37,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:16:37" (1/1) ... [2025-03-17 14:16:37,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad9747b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37, skipping insertion in model container [2025-03-17 14:16:37,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:16:37" (1/1) ... [2025-03-17 14:16:37,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:16:37,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:16:37,664 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:16:37,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:16:37,720 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:16:37,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37 WrapperNode [2025-03-17 14:16:37,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:16:37,722 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:16:37,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:16:37,722 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:16:37,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37" (1/1) ... [2025-03-17 14:16:37,739 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37" (1/1) ... [2025-03-17 14:16:37,750 INFO L138 Inliner]: procedures = 162, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2025-03-17 14:16:37,750 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:16:37,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:16:37,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:16:37,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:16:37,755 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37" (1/1) ... [2025-03-17 14:16:37,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37" (1/1) ... [2025-03-17 14:16:37,756 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37" (1/1) ... [2025-03-17 14:16:37,762 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [3, 5]. 63 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [1, 5]. The 2 writes are split as follows [2, 0]. [2025-03-17 14:16:37,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37" (1/1) ... [2025-03-17 14:16:37,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37" (1/1) ... [2025-03-17 14:16:37,765 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37" (1/1) ... [2025-03-17 14:16:37,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37" (1/1) ... [2025-03-17 14:16:37,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37" (1/1) ... [2025-03-17 14:16:37,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37" (1/1) ... [2025-03-17 14:16:37,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:16:37,768 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:16:37,768 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:16:37,768 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:16:37,769 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37" (1/1) ... [2025-03-17 14:16:37,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:16:37,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:16:37,789 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) [2025-03-17 14:16:37,791 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 [2025-03-17 14:16:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 14:16:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 14:16:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 14:16:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:16:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-17 14:16:37,805 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-17 14:16:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 14:16:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 14:16:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 14:16:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:16:37,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:16:37,806 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 14:16:37,892 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:16:37,893 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:16:37,992 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:16:37,993 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:16:38,039 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:16:38,039 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:16:38,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:16:38 BoogieIcfgContainer [2025-03-17 14:16:38,039 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:16:38,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:16:38,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:16:38,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:16:38,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:16:37" (1/3) ... [2025-03-17 14:16:38,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f45470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:16:38, skipping insertion in model container [2025-03-17 14:16:38,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:37" (2/3) ... [2025-03-17 14:16:38,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f45470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:16:38, skipping insertion in model container [2025-03-17 14:16:38,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:16:38" (3/3) ... [2025-03-17 14:16:38,046 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_22-deref_read.i [2025-03-17 14:16:38,057 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:16:38,058 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_22-deref_read.i that has 2 procedures, 22 locations, 1 initial locations, 0 loop locations, and 5 error locations. [2025-03-17 14:16:38,058 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:16:38,095 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 14:16:38,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 46 flow [2025-03-17 14:16:38,134 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2025-03-17 14:16:38,135 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:16:38,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 33 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-03-17 14:16:38,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 46 flow [2025-03-17 14:16:38,141 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2025-03-17 14:16:38,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:16:38,156 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;@50ec0807, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:16:38,157 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-03-17 14:16:38,161 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:16:38,161 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-17 14:16:38,161 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:16:38,161 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:38,162 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 14:16:38,162 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-17 14:16:38,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:38,166 INFO L85 PathProgramCache]: Analyzing trace with hash -599445474, now seen corresponding path program 1 times [2025-03-17 14:16:38,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:38,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743395722] [2025-03-17 14:16:38,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:16:38,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:38,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:16:38,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:16:38,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:38,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:16:38,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:38,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743395722] [2025-03-17 14:16:38,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743395722] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:16:38,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:16:38,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:16:38,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336253846] [2025-03-17 14:16:38,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:16:38,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:16:38,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:38,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:16:38,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:16:38,457 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 21 [2025-03-17 14:16:38,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2025-03-17 14:16:38,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:38,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 21 [2025-03-17 14:16:38,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:38,514 INFO L124 PetriNetUnfolderBase]: 15/60 cut-off events. [2025-03-17 14:16:38,515 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:16:38,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 60 events. 15/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 184 event pairs, 0 based on Foata normal form. 10/64 useless extension candidates. Maximal degree in co-relation 96. Up to 35 conditions per place. [2025-03-17 14:16:38,517 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 11 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2025-03-17 14:16:38,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 71 flow [2025-03-17 14:16:38,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:16:38,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:16:38,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2025-03-17 14:16:38,526 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-03-17 14:16:38,527 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 4 states and 52 transitions. [2025-03-17 14:16:38,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 71 flow [2025-03-17 14:16:38,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:16:38,531 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 42 flow [2025-03-17 14:16:38,533 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=42, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2025-03-17 14:16:38,537 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2025-03-17 14:16:38,537 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 42 flow [2025-03-17 14:16:38,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2025-03-17 14:16:38,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:38,538 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 14:16:38,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 14:16:38,539 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-17 14:16:38,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:38,540 INFO L85 PathProgramCache]: Analyzing trace with hash -599219934, now seen corresponding path program 1 times [2025-03-17 14:16:38,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:38,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557869313] [2025-03-17 14:16:38,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:16:38,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:38,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:16:38,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:16:38,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:38,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:16:38,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:38,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557869313] [2025-03-17 14:16:38,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557869313] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:16:38,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:16:38,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:16:38,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708871911] [2025-03-17 14:16:38,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:16:38,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:16:38,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:38,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:16:38,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:16:38,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 21 [2025-03-17 14:16:38,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:16:38,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:38,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 21 [2025-03-17 14:16:38,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:38,690 INFO L124 PetriNetUnfolderBase]: 15/56 cut-off events. [2025-03-17 14:16:38,690 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 14:16:38,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 56 events. 15/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 157 event pairs, 15 based on Foata normal form. 5/55 useless extension candidates. Maximal degree in co-relation 96. Up to 40 conditions per place. [2025-03-17 14:16:38,691 INFO L140 encePairwiseOnDemand]: 19/21 looper letters, 8 selfloop transitions, 1 changer transitions 1/17 dead transitions. [2025-03-17 14:16:38,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 60 flow [2025-03-17 14:16:38,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:16:38,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:16:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2025-03-17 14:16:38,692 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2025-03-17 14:16:38,692 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 42 flow. Second operand 3 states and 41 transitions. [2025-03-17 14:16:38,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 60 flow [2025-03-17 14:16:38,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 17 transitions, 57 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:16:38,693 INFO L231 Difference]: Finished difference. Result has 23 places, 16 transitions, 37 flow [2025-03-17 14:16:38,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2025-03-17 14:16:38,693 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2025-03-17 14:16:38,693 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 37 flow [2025-03-17 14:16:38,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:16:38,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:38,694 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 14:16:38,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 14:16:38,694 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-17 14:16:38,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:38,694 INFO L85 PathProgramCache]: Analyzing trace with hash -599445473, now seen corresponding path program 1 times [2025-03-17 14:16:38,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:38,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270626432] [2025-03-17 14:16:38,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:16:38,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:38,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:16:38,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:16:38,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:38,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:16:38,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:38,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270626432] [2025-03-17 14:16:38,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270626432] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:16:38,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:16:38,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:16:38,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994425747] [2025-03-17 14:16:38,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:16:38,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:16:38,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:38,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:16:38,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:16:38,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 21 [2025-03-17 14:16:38,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 37 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2025-03-17 14:16:38,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:38,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 21 [2025-03-17 14:16:38,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:38,883 INFO L124 PetriNetUnfolderBase]: 12/45 cut-off events. [2025-03-17 14:16:38,883 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:16:38,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 45 events. 12/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 6 based on Foata normal form. 4/47 useless extension candidates. Maximal degree in co-relation 82. Up to 28 conditions per place. [2025-03-17 14:16:38,883 INFO L140 encePairwiseOnDemand]: 18/21 looper letters, 10 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2025-03-17 14:16:38,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 18 transitions, 65 flow [2025-03-17 14:16:38,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:16:38,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:16:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2025-03-17 14:16:38,885 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-03-17 14:16:38,885 INFO L175 Difference]: Start difference. First operand has 23 places, 16 transitions, 37 flow. Second operand 4 states and 49 transitions. [2025-03-17 14:16:38,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 18 transitions, 65 flow [2025-03-17 14:16:38,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 64 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:16:38,886 INFO L231 Difference]: Finished difference. Result has 23 places, 15 transitions, 38 flow [2025-03-17 14:16:38,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=38, PETRI_PLACES=23, PETRI_TRANSITIONS=15} [2025-03-17 14:16:38,886 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2025-03-17 14:16:38,886 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 38 flow [2025-03-17 14:16:38,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2025-03-17 14:16:38,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:38,887 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:16:38,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 14:16:38,887 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-03-17 14:16:38,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash 393981112, now seen corresponding path program 1 times [2025-03-17 14:16:38,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:38,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140114897] [2025-03-17 14:16:38,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:16:38,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:38,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 14:16:38,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 14:16:38,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:38,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:16:38,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:38,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140114897] [2025-03-17 14:16:38,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140114897] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:16:38,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:16:38,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:16:38,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413825686] [2025-03-17 14:16:38,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:16:38,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:16:38,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:38,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:16:38,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:16:38,917 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 21 [2025-03-17 14:16:38,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2025-03-17 14:16:38,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:38,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 21 [2025-03-17 14:16:38,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:38,936 INFO L124 PetriNetUnfolderBase]: 12/42 cut-off events. [2025-03-17 14:16:38,936 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 14:16:38,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 42 events. 12/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 12 based on Foata normal form. 4/43 useless extension candidates. Maximal degree in co-relation 83. Up to 33 conditions per place. [2025-03-17 14:16:38,936 INFO L140 encePairwiseOnDemand]: 19/21 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2025-03-17 14:16:38,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 14 transitions, 54 flow [2025-03-17 14:16:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:16:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:16:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2025-03-17 14:16:38,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2025-03-17 14:16:38,938 INFO L175 Difference]: Start difference. First operand has 23 places, 15 transitions, 38 flow. Second operand 3 states and 40 transitions. [2025-03-17 14:16:38,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 14 transitions, 54 flow [2025-03-17 14:16:38,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 51 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:16:38,938 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2025-03-17 14:16:38,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2025-03-17 14:16:38,939 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, -2 predicate places. [2025-03-17 14:16:38,939 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2025-03-17 14:16:38,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2025-03-17 14:16:38,941 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2025-03-17 14:16:38,941 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2025-03-17 14:16:38,941 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2025-03-17 14:16:38,941 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2025-03-17 14:16:38,941 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2025-03-17 14:16:38,941 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2025-03-17 14:16:38,941 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2025-03-17 14:16:38,941 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 8 remaining) [2025-03-17 14:16:38,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 14:16:38,942 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-17 14:16:38,946 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 14:16:38,946 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 14:16:38,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 02:16:38 BasicIcfg [2025-03-17 14:16:38,950 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 14:16:38,950 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 14:16:38,950 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 14:16:38,950 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 14:16:38,951 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:16:38" (3/4) ... [2025-03-17 14:16:38,952 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 14:16:38,954 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-03-17 14:16:38,957 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2025-03-17 14:16:38,957 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-17 14:16:38,957 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-03-17 14:16:38,957 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-17 14:16:39,004 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 14:16:39,004 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 14:16:39,004 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 14:16:39,005 INFO L158 Benchmark]: Toolchain (without parser) took 1606.49ms. Allocated memory is still 167.8MB. Free memory was 122.6MB in the beginning and 90.5MB in the end (delta: 32.1MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2025-03-17 14:16:39,005 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:16:39,005 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.70ms. Allocated memory is still 167.8MB. Free memory was 122.6MB in the beginning and 102.9MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 14:16:39,005 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.91ms. Allocated memory is still 167.8MB. Free memory was 102.9MB in the beginning and 102.1MB in the end (delta: 767.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:16:39,005 INFO L158 Benchmark]: Boogie Preprocessor took 17.31ms. Allocated memory is still 167.8MB. Free memory was 102.1MB in the beginning and 100.8MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 14:16:39,005 INFO L158 Benchmark]: IcfgBuilder took 271.04ms. Allocated memory is still 167.8MB. Free memory was 100.8MB in the beginning and 81.5MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 14:16:39,006 INFO L158 Benchmark]: TraceAbstraction took 908.96ms. Allocated memory is still 167.8MB. Free memory was 81.5MB in the beginning and 96.2MB in the end (delta: -14.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:16:39,006 INFO L158 Benchmark]: Witness Printer took 54.05ms. Allocated memory is still 167.8MB. Free memory was 96.2MB in the beginning and 90.5MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 14:16:39,007 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.70ms. Allocated memory is still 167.8MB. Free memory was 122.6MB in the beginning and 102.9MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.91ms. Allocated memory is still 167.8MB. Free memory was 102.9MB in the beginning and 102.1MB in the end (delta: 767.7kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.31ms. Allocated memory is still 167.8MB. Free memory was 102.1MB in the beginning and 100.8MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 271.04ms. Allocated memory is still 167.8MB. Free memory was 100.8MB in the beginning and 81.5MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 908.96ms. Allocated memory is still 167.8MB. Free memory was 81.5MB in the beginning and 96.2MB in the end (delta: -14.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 54.05ms. Allocated memory is still 167.8MB. Free memory was 96.2MB in the beginning and 90.5MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 688]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 32 locations, 30 edges, 8 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: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 105 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 13 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 0.3s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 165 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 14:16:39,018 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