./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/sync01.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/pthread/sync01.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 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:59:45,487 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:59:45,544 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:59:45,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:59:45,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:59:45,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:59:45,563 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:59:45,563 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:59:45,563 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:59:45,564 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:59:45,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:59:45,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:59:45,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:59:45,565 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:59:45,565 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:59:45,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:59:45,565 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:59:45,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:59:45,565 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:59:45,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:59:45,566 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:59:45,566 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:59:45,566 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:59:45,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:59:45,566 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:59:45,566 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:59:45,566 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:59:45,566 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:59:45,566 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:59:45,566 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:59:45,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:59:45,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:59:45,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:59:45,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:59:45,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:59:45,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:59:45,568 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:59:45,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:59:45,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:59:45,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:59:45,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:59:45,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:59:45,568 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 -> 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 [2025-03-17 13:59:45,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:59:45,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:59:45,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:59:45,819 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:59:45,820 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:59:45,821 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/sync01.i [2025-03-17 13:59:47,016 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f6aad610/ba6ec352ac3443cf97aa2ab8f97a57ff/FLAG8a96045a7 [2025-03-17 13:59:47,276 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:59:47,276 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/sync01.i [2025-03-17 13:59:47,286 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f6aad610/ba6ec352ac3443cf97aa2ab8f97a57ff/FLAG8a96045a7 [2025-03-17 13:59:47,593 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f6aad610/ba6ec352ac3443cf97aa2ab8f97a57ff [2025-03-17 13:59:47,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:59:47,596 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:59:47,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:59:47,597 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:59:47,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:59:47,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:59:47" (1/1) ... [2025-03-17 13:59:47,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20bb0399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47, skipping insertion in model container [2025-03-17 13:59:47,601 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:59:47" (1/1) ... [2025-03-17 13:59:47,635 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:59:47,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:59:47,870 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:59:47,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:59:47,953 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:59:47,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47 WrapperNode [2025-03-17 13:59:47,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:59:47,956 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:59:47,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:59:47,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:59:47,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47" (1/1) ... [2025-03-17 13:59:47,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47" (1/1) ... [2025-03-17 13:59:48,002 INFO L138 Inliner]: procedures = 268, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 254 [2025-03-17 13:59:48,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:59:48,004 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:59:48,004 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:59:48,004 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:59:48,010 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47" (1/1) ... [2025-03-17 13:59:48,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47" (1/1) ... [2025-03-17 13:59:48,014 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47" (1/1) ... [2025-03-17 13:59:48,029 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-03-17 13:59:48,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47" (1/1) ... [2025-03-17 13:59:48,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47" (1/1) ... [2025-03-17 13:59:48,041 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47" (1/1) ... [2025-03-17 13:59:48,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47" (1/1) ... [2025-03-17 13:59:48,044 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47" (1/1) ... [2025-03-17 13:59:48,045 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47" (1/1) ... [2025-03-17 13:59:48,047 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:59:48,047 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:59:48,047 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:59:48,047 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:59:48,048 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47" (1/1) ... [2025-03-17 13:59:48,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:59:48,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:59:48,068 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 13:59:48,070 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 13:59:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 13:59:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 13:59:48,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 13:59:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 13:59:48,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 13:59:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 13:59:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:59:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 13:59:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 13:59:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:59:48,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:59:48,085 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 13:59:48,209 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:59:48,212 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:59:48,497 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 13:59:48,497 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:59:49,090 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:59:49,090 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 13:59:49,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:59:49 BoogieIcfgContainer [2025-03-17 13:59:49,090 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:59:49,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:59:49,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:59:49,096 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:59:49,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:59:47" (1/3) ... [2025-03-17 13:59:49,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23af533b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:59:49, skipping insertion in model container [2025-03-17 13:59:49,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:47" (2/3) ... [2025-03-17 13:59:49,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23af533b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:59:49, skipping insertion in model container [2025-03-17 13:59:49,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:59:49" (3/3) ... [2025-03-17 13:59:49,099 INFO L128 eAbstractionObserver]: Analyzing ICFG sync01.i [2025-03-17 13:59:49,109 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:59:49,111 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sync01.i that has 3 procedures, 34 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-17 13:59:49,111 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 13:59:49,159 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 13:59:49,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 88 flow [2025-03-17 13:59:49,224 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2025-03-17 13:59:49,227 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 13:59:49,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 4/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-03-17 13:59:49,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 37 transitions, 88 flow [2025-03-17 13:59:49,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 34 transitions, 80 flow [2025-03-17 13:59:49,241 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:59:49,248 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;@319adf83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:59:49,248 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-17 13:59:49,275 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 13:59:49,275 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2025-03-17 13:59:49,275 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 13:59:49,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:49,276 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] [2025-03-17 13:59:49,276 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:49,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:49,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1062711242, now seen corresponding path program 1 times [2025-03-17 13:59:49,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:49,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933309996] [2025-03-17 13:59:49,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:49,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:49,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 13:59:49,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 13:59:49,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:49,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:49,898 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 13:59:49,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:49,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933309996] [2025-03-17 13:59:49,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933309996] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:49,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:49,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:59:49,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196930580] [2025-03-17 13:59:49,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:49,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:59:49,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:49,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:59:49,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:59:49,926 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2025-03-17 13:59:49,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 13:59:49,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:49,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2025-03-17 13:59:49,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:49,995 INFO L124 PetriNetUnfolderBase]: 89/179 cut-off events. [2025-03-17 13:59:49,995 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-03-17 13:59:49,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 179 events. 89/179 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 574 event pairs, 32 based on Foata normal form. 12/182 useless extension candidates. Maximal degree in co-relation 324. Up to 113 conditions per place. [2025-03-17 13:59:49,998 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 20 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2025-03-17 13:59:49,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 122 flow [2025-03-17 13:59:49,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:59:50,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 13:59:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2025-03-17 13:59:50,007 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5405405405405406 [2025-03-17 13:59:50,008 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 80 flow. Second operand 3 states and 60 transitions. [2025-03-17 13:59:50,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 122 flow [2025-03-17 13:59:50,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 114 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 13:59:50,015 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 71 flow [2025-03-17 13:59:50,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2025-03-17 13:59:50,021 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2025-03-17 13:59:50,021 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 71 flow [2025-03-17 13:59:50,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 13:59:50,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:50,024 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] [2025-03-17 13:59:50,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 13:59:50,024 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:50,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:50,025 INFO L85 PathProgramCache]: Analyzing trace with hash -583551878, now seen corresponding path program 2 times [2025-03-17 13:59:50,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:50,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022051321] [2025-03-17 13:59:50,025 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:59:50,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:50,220 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 1 equivalence classes. [2025-03-17 13:59:50,245 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 13:59:50,245 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 13:59:50,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:50,432 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 13:59:50,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:50,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022051321] [2025-03-17 13:59:50,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022051321] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:50,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:50,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:59:50,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592989238] [2025-03-17 13:59:50,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:50,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:59:50,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:50,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:59:50,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:59:50,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-17 13:59:50,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 13:59:50,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:50,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-17 13:59:50,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:50,598 INFO L124 PetriNetUnfolderBase]: 61/146 cut-off events. [2025-03-17 13:59:50,599 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-03-17 13:59:50,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 146 events. 61/146 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 424 event pairs, 12 based on Foata normal form. 19/163 useless extension candidates. Maximal degree in co-relation 129. Up to 62 conditions per place. [2025-03-17 13:59:50,602 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 21 selfloop transitions, 11 changer transitions 0/38 dead transitions. [2025-03-17 13:59:50,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 158 flow [2025-03-17 13:59:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:59:50,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 13:59:50,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2025-03-17 13:59:50,604 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2025-03-17 13:59:50,604 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 71 flow. Second operand 6 states and 98 transitions. [2025-03-17 13:59:50,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 158 flow [2025-03-17 13:59:50,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 13:59:50,606 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 114 flow [2025-03-17 13:59:50,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2025-03-17 13:59:50,607 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2025-03-17 13:59:50,607 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 114 flow [2025-03-17 13:59:50,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 13:59:50,607 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:50,607 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] [2025-03-17 13:59:50,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 13:59:50,608 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:50,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:50,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1562588354, now seen corresponding path program 3 times [2025-03-17 13:59:50,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:50,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576987781] [2025-03-17 13:59:50,609 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 13:59:50,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:50,759 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 1 equivalence classes. [2025-03-17 13:59:50,768 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 13:59:50,769 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 13:59:50,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:50,890 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 13:59:50,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:50,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576987781] [2025-03-17 13:59:50,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576987781] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:50,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:50,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:59:50,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666330854] [2025-03-17 13:59:50,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:50,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:59:50,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:50,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:59:50,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:59:50,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2025-03-17 13:59:50,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 13:59:50,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:50,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2025-03-17 13:59:50,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:50,995 INFO L124 PetriNetUnfolderBase]: 42/112 cut-off events. [2025-03-17 13:59:50,996 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2025-03-17 13:59:50,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 112 events. 42/112 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 285 event pairs, 8 based on Foata normal form. 4/114 useless extension candidates. Maximal degree in co-relation 63. Up to 33 conditions per place. [2025-03-17 13:59:50,997 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 16 selfloop transitions, 11 changer transitions 0/33 dead transitions. [2025-03-17 13:59:50,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 162 flow [2025-03-17 13:59:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:59:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 13:59:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2025-03-17 13:59:50,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2025-03-17 13:59:50,998 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 114 flow. Second operand 5 states and 79 transitions. [2025-03-17 13:59:50,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 162 flow [2025-03-17 13:59:50,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 146 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-03-17 13:59:51,000 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 101 flow [2025-03-17 13:59:51,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2025-03-17 13:59:51,000 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2025-03-17 13:59:51,000 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 101 flow [2025-03-17 13:59:51,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 13:59:51,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:51,001 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] [2025-03-17 13:59:51,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 13:59:51,001 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:51,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:51,001 INFO L85 PathProgramCache]: Analyzing trace with hash 78120786, now seen corresponding path program 4 times [2025-03-17 13:59:51,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:51,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329000938] [2025-03-17 13:59:51,002 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 13:59:51,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:51,180 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-03-17 13:59:51,188 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 13:59:51,188 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 13:59:51,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:51,214 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 13:59:51,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:51,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329000938] [2025-03-17 13:59:51,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329000938] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:51,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:51,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:59:51,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194913651] [2025-03-17 13:59:51,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:51,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:59:51,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:51,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:59:51,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:59:51,217 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2025-03-17 13:59:51,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 13:59:51,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:51,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2025-03-17 13:59:51,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:51,253 INFO L124 PetriNetUnfolderBase]: 42/110 cut-off events. [2025-03-17 13:59:51,253 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2025-03-17 13:59:51,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 110 events. 42/110 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 317 event pairs, 34 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 58. Up to 95 conditions per place. [2025-03-17 13:59:51,254 INFO L140 encePairwiseOnDemand]: 35/37 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2025-03-17 13:59:51,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 137 flow [2025-03-17 13:59:51,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:59:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 13:59:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2025-03-17 13:59:51,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2025-03-17 13:59:51,256 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 101 flow. Second operand 3 states and 54 transitions. [2025-03-17 13:59:51,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 137 flow [2025-03-17 13:59:51,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 13:59:51,259 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2025-03-17 13:59:51,259 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2025-03-17 13:59:51,259 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places. [2025-03-17 13:59:51,260 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2025-03-17 13:59:51,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 13:59:51,261 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2025-03-17 13:59:51,262 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-03-17 13:59:51,262 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-17 13:59:51,262 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-17 13:59:51,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 13:59:51,262 INFO L422 BasicCegarLoop]: Path program histogram: [4] [2025-03-17 13:59:51,266 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 13:59:51,266 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 13:59:51,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 01:59:51 BasicIcfg [2025-03-17 13:59:51,272 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 13:59:51,273 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 13:59:51,273 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 13:59:51,273 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 13:59:51,274 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:59:49" (3/4) ... [2025-03-17 13:59:51,275 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 13:59:51,277 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-17 13:59:51,278 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-17 13:59:51,286 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 141 nodes and edges [2025-03-17 13:59:51,286 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 68 nodes and edges [2025-03-17 13:59:51,287 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2025-03-17 13:59:51,287 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2025-03-17 13:59:51,288 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-17 13:59:51,288 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-17 13:59:51,288 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-17 13:59:51,288 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-17 13:59:51,354 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 13:59:51,355 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 13:59:51,355 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 13:59:51,356 INFO L158 Benchmark]: Toolchain (without parser) took 3759.92ms. Allocated memory was 142.6MB in the beginning and 377.5MB in the end (delta: 234.9MB). Free memory was 111.8MB in the beginning and 265.5MB in the end (delta: -153.7MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. [2025-03-17 13:59:51,356 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 13:59:51,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.59ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 82.4MB in the end (delta: 28.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 13:59:51,357 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.69ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 79.4MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 13:59:51,357 INFO L158 Benchmark]: Boogie Preprocessor took 43.06ms. Allocated memory is still 142.6MB. Free memory was 79.4MB in the beginning and 76.5MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 13:59:51,358 INFO L158 Benchmark]: IcfgBuilder took 1043.18ms. Allocated memory is still 142.6MB. Free memory was 76.5MB in the beginning and 67.7MB in the end (delta: 8.8MB). Peak memory consumption was 71.2MB. Max. memory is 16.1GB. [2025-03-17 13:59:51,358 INFO L158 Benchmark]: TraceAbstraction took 2179.28ms. Allocated memory was 142.6MB in the beginning and 377.5MB in the end (delta: 234.9MB). Free memory was 66.7MB in the beginning and 273.9MB in the end (delta: -207.2MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2025-03-17 13:59:51,358 INFO L158 Benchmark]: Witness Printer took 82.40ms. Allocated memory is still 377.5MB. Free memory was 273.9MB in the beginning and 265.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 13:59:51,359 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 358.59ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 82.4MB in the end (delta: 28.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.69ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 79.4MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.06ms. Allocated memory is still 142.6MB. Free memory was 79.4MB in the beginning and 76.5MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 1043.18ms. Allocated memory is still 142.6MB. Free memory was 76.5MB in the beginning and 67.7MB in the end (delta: 8.8MB). Peak memory consumption was 71.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2179.28ms. Allocated memory was 142.6MB in the beginning and 377.5MB in the end (delta: 234.9MB). Free memory was 66.7MB in the beginning and 273.9MB in the end (delta: -207.2MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * Witness Printer took 82.40ms. Allocated memory is still 377.5MB. Free memory was 273.9MB in the beginning and 265.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 953]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 20]: 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, 54 locations, 59 edges, 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: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 55 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 207 IncrementalHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 3 mSDtfsCounter, 207 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=2, InterpolantAutomatonStates: 17, 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, 0.5s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 212 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 13:59:51,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE