./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/wsc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-theta/wsc.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 cea92baab62ba0c35a952a0cf718b682864c9b4a52d803c2eb370964dcb75f16 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 10:20:03,912 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 10:20:03,968 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 10:20:03,973 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 10:20:03,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 10:20:03,997 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 10:20:03,998 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 10:20:03,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 10:20:03,999 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 10:20:03,999 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 10:20:04,000 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 10:20:04,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 10:20:04,000 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 10:20:04,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 10:20:04,001 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 10:20:04,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 10:20:04,001 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 10:20:04,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 10:20:04,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 10:20:04,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 10:20:04,001 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 10:20:04,001 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 10:20:04,002 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 10:20:04,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 10:20:04,002 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 10:20:04,002 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 10:20:04,002 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 10:20:04,002 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 10:20:04,002 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 10:20:04,002 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 10:20:04,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 10:20:04,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 10:20:04,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 10:20:04,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:20:04,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 10:20:04,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 10:20:04,003 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 10:20:04,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 10:20:04,003 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 10:20:04,003 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 10:20:04,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 10:20:04,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 10:20:04,003 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 -> cea92baab62ba0c35a952a0cf718b682864c9b4a52d803c2eb370964dcb75f16 [2025-03-04 10:20:04,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 10:20:04,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 10:20:04,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 10:20:04,275 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 10:20:04,275 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 10:20:04,276 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/wsc.i [2025-03-04 10:20:05,351 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a6a9ebb8/38a11cbc643b46958bf92109939a5e44/FLAGaf53589d5 [2025-03-04 10:20:05,578 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 10:20:05,579 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/wsc.i [2025-03-04 10:20:05,588 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a6a9ebb8/38a11cbc643b46958bf92109939a5e44/FLAGaf53589d5 [2025-03-04 10:20:05,904 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a6a9ebb8/38a11cbc643b46958bf92109939a5e44 [2025-03-04 10:20:05,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 10:20:05,906 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 10:20:05,907 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 10:20:05,907 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 10:20:05,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 10:20:05,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:20:05" (1/1) ... [2025-03-04 10:20:05,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ba6f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:05, skipping insertion in model container [2025-03-04 10:20:05,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:20:05" (1/1) ... [2025-03-04 10:20:05,931 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 10:20:06,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:20:06,205 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 10:20:06,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:20:06,272 INFO L204 MainTranslator]: Completed translation [2025-03-04 10:20:06,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:06 WrapperNode [2025-03-04 10:20:06,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 10:20:06,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 10:20:06,274 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 10:20:06,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 10:20:06,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:06" (1/1) ... [2025-03-04 10:20:06,290 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:06" (1/1) ... [2025-03-04 10:20:06,311 INFO L138 Inliner]: procedures = 171, calls = 27, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 124 [2025-03-04 10:20:06,312 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 10:20:06,313 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 10:20:06,313 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 10:20:06,313 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 10:20:06,318 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:06" (1/1) ... [2025-03-04 10:20:06,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:06" (1/1) ... [2025-03-04 10:20:06,320 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:06" (1/1) ... [2025-03-04 10:20:06,333 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 0 writes are split as follows [0, 0]. [2025-03-04 10:20:06,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:06" (1/1) ... [2025-03-04 10:20:06,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:06" (1/1) ... [2025-03-04 10:20:06,342 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:06" (1/1) ... [2025-03-04 10:20:06,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:06" (1/1) ... [2025-03-04 10:20:06,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:06" (1/1) ... [2025-03-04 10:20:06,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:06" (1/1) ... [2025-03-04 10:20:06,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 10:20:06,350 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 10:20:06,350 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 10:20:06,350 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 10:20:06,350 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:06" (1/1) ... [2025-03-04 10:20:06,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:20:06,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:20:06,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 10:20:06,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 10:20:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 10:20:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure f0 [2025-03-04 10:20:06,397 INFO L138 BoogieDeclarations]: Found implementation of procedure f0 [2025-03-04 10:20:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-03-04 10:20:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-03-04 10:20:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-03-04 10:20:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-03-04 10:20:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure f3 [2025-03-04 10:20:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure f3 [2025-03-04 10:20:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure f4 [2025-03-04 10:20:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure f4 [2025-03-04 10:20:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure f5 [2025-03-04 10:20:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure f5 [2025-03-04 10:20:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 10:20:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 10:20:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 10:20:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 10:20:06,399 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 10:20:06,517 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 10:20:06,518 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 10:20:06,693 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 10:20:06,693 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 10:20:06,794 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 10:20:06,794 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 10:20:06,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:20:06 BoogieIcfgContainer [2025-03-04 10:20:06,795 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 10:20:06,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 10:20:06,797 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 10:20:06,800 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 10:20:06,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 10:20:05" (1/3) ... [2025-03-04 10:20:06,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e3ff43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:20:06, skipping insertion in model container [2025-03-04 10:20:06,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:20:06" (2/3) ... [2025-03-04 10:20:06,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e3ff43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:20:06, skipping insertion in model container [2025-03-04 10:20:06,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:20:06" (3/3) ... [2025-03-04 10:20:06,801 INFO L128 eAbstractionObserver]: Analyzing ICFG wsc.i [2025-03-04 10:20:06,811 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 10:20:06,812 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG wsc.i that has 7 procedures, 55 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 10:20:06,812 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 10:20:06,862 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-03-04 10:20:06,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 55 transitions, 152 flow [2025-03-04 10:20:06,931 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2025-03-04 10:20:06,933 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-04 10:20:06,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 49 events. 1/49 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2025-03-04 10:20:06,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 55 transitions, 152 flow [2025-03-04 10:20:06,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 48 transitions, 132 flow [2025-03-04 10:20:06,953 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 10:20:06,961 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;@c569de4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 10:20:06,961 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-03-04 10:20:06,974 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 10:20:06,974 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2025-03-04 10:20:06,974 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-04 10:20:06,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:20:06,975 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:20:06,975 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-04 10:20:06,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:20:06,982 INFO L85 PathProgramCache]: Analyzing trace with hash 872726316, now seen corresponding path program 1 times [2025-03-04 10:20:06,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:20:06,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254444879] [2025-03-04 10:20:06,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:20:06,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:20:07,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-04 10:20:07,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 10:20:07,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:20:07,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:20:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:20:07,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:20:07,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254444879] [2025-03-04 10:20:07,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254444879] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:20:07,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:20:07,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 10:20:07,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045084259] [2025-03-04 10:20:07,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:20:07,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:20:07,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:20:07,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:20:07,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:20:07,340 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2025-03-04 10:20:07,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:20:07,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:20:07,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2025-03-04 10:20:07,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:20:10,234 INFO L124 PetriNetUnfolderBase]: 45933/58345 cut-off events. [2025-03-04 10:20:10,235 INFO L125 PetriNetUnfolderBase]: For 4811/4811 co-relation queries the response was YES. [2025-03-04 10:20:10,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120889 conditions, 58345 events. 45933/58345 cut-off events. For 4811/4811 co-relation queries the response was YES. Maximal size of possible extension queue 1771. Compared 286397 event pairs, 31565 based on Foata normal form. 190/58534 useless extension candidates. Maximal degree in co-relation 117357. Up to 58167 conditions per place. [2025-03-04 10:20:10,575 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 51 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2025-03-04 10:20:10,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 59 transitions, 274 flow [2025-03-04 10:20:10,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:20:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:20:10,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-03-04 10:20:10,586 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2025-03-04 10:20:10,587 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 132 flow. Second operand 3 states and 96 transitions. [2025-03-04 10:20:10,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 59 transitions, 274 flow [2025-03-04 10:20:10,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 242 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-03-04 10:20:10,714 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 125 flow [2025-03-04 10:20:10,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2025-03-04 10:20:10,717 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -12 predicate places. [2025-03-04 10:20:10,717 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 125 flow [2025-03-04 10:20:10,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:20:10,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:20:10,717 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:20:10,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 10:20:10,718 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-04 10:20:10,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:20:10,719 INFO L85 PathProgramCache]: Analyzing trace with hash 328687158, now seen corresponding path program 2 times [2025-03-04 10:20:10,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:20:10,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731609736] [2025-03-04 10:20:10,719 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:20:10,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:20:10,815 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 1 equivalence classes. [2025-03-04 10:20:10,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 10:20:10,828 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 10:20:10,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:20:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:20:10,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:20:10,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731609736] [2025-03-04 10:20:10,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731609736] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:20:10,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:20:10,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:20:10,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431914982] [2025-03-04 10:20:10,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:20:10,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:20:10,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:20:10,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:20:10,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:20:10,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2025-03-04 10:20:10,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:20:10,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:20:10,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2025-03-04 10:20:10,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:20:12,813 INFO L124 PetriNetUnfolderBase]: 35904/47104 cut-off events. [2025-03-04 10:20:12,813 INFO L125 PetriNetUnfolderBase]: For 10101/10101 co-relation queries the response was YES. [2025-03-04 10:20:12,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103694 conditions, 47104 events. 35904/47104 cut-off events. For 10101/10101 co-relation queries the response was YES. Maximal size of possible extension queue 1428. Compared 251821 event pairs, 10899 based on Foata normal form. 3802/50905 useless extension candidates. Maximal degree in co-relation 26724. Up to 32217 conditions per place. [2025-03-04 10:20:12,950 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 68 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2025-03-04 10:20:12,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 351 flow [2025-03-04 10:20:12,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:20:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:20:12,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2025-03-04 10:20:12,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-04 10:20:12,952 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 125 flow. Second operand 3 states and 110 transitions. [2025-03-04 10:20:12,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 351 flow [2025-03-04 10:20:12,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 78 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 10:20:12,953 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 164 flow [2025-03-04 10:20:12,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2025-03-04 10:20:12,954 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2025-03-04 10:20:12,954 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 164 flow [2025-03-04 10:20:12,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:20:12,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:20:12,954 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:20:12,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 10:20:12,954 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-04 10:20:12,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:20:12,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1044806042, now seen corresponding path program 3 times [2025-03-04 10:20:12,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:20:12,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126768784] [2025-03-04 10:20:12,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:20:12,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:20:12,973 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 1 equivalence classes. [2025-03-04 10:20:12,978 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 10:20:12,981 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 10:20:12,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:20:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:20:13,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:20:13,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126768784] [2025-03-04 10:20:13,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126768784] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:20:13,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:20:13,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:20:13,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456155519] [2025-03-04 10:20:13,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:20:13,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:20:13,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:20:13,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:20:13,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:20:13,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2025-03-04 10:20:13,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:20:13,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:20:13,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2025-03-04 10:20:13,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:20:14,973 INFO L124 PetriNetUnfolderBase]: 42168/55917 cut-off events. [2025-03-04 10:20:14,973 INFO L125 PetriNetUnfolderBase]: For 31048/31048 co-relation queries the response was YES. [2025-03-04 10:20:15,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134399 conditions, 55917 events. 42168/55917 cut-off events. For 31048/31048 co-relation queries the response was YES. Maximal size of possible extension queue 1638. Compared 308988 event pairs, 21775 based on Foata normal form. 1086/57002 useless extension candidates. Maximal degree in co-relation 28306. Up to 33365 conditions per place. [2025-03-04 10:20:15,158 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 68 selfloop transitions, 2 changer transitions 1/76 dead transitions. [2025-03-04 10:20:15,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 76 transitions, 395 flow [2025-03-04 10:20:15,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:20:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:20:15,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2025-03-04 10:20:15,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2025-03-04 10:20:15,159 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 164 flow. Second operand 3 states and 102 transitions. [2025-03-04 10:20:15,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 76 transitions, 395 flow [2025-03-04 10:20:15,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 367 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-03-04 10:20:15,204 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 158 flow [2025-03-04 10:20:15,204 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2025-03-04 10:20:15,205 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2025-03-04 10:20:15,205 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 158 flow [2025-03-04 10:20:15,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:20:15,205 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:20:15,206 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:20:15,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 10:20:15,206 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-04 10:20:15,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:20:15,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1832886984, now seen corresponding path program 4 times [2025-03-04 10:20:15,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:20:15,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47095925] [2025-03-04 10:20:15,207 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 10:20:15,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:20:15,221 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-03-04 10:20:15,228 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 43 of 44 statements. [2025-03-04 10:20:15,228 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-04 10:20:15,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:20:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:20:15,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:20:15,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47095925] [2025-03-04 10:20:15,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47095925] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:20:15,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:20:15,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:20:15,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796919869] [2025-03-04 10:20:15,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:20:15,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:20:15,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:20:15,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:20:15,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:20:15,283 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2025-03-04 10:20:15,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:20:15,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:20:15,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2025-03-04 10:20:15,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:20:17,670 INFO L124 PetriNetUnfolderBase]: 48000/64389 cut-off events. [2025-03-04 10:20:17,671 INFO L125 PetriNetUnfolderBase]: For 28182/28182 co-relation queries the response was YES. [2025-03-04 10:20:17,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152343 conditions, 64389 events. 48000/64389 cut-off events. For 28182/28182 co-relation queries the response was YES. Maximal size of possible extension queue 1915. Compared 379453 event pairs, 21654 based on Foata normal form. 1850/66238 useless extension candidates. Maximal degree in co-relation 68294. Up to 34165 conditions per place. [2025-03-04 10:20:17,862 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 73 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2025-03-04 10:20:17,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 404 flow [2025-03-04 10:20:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:20:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:20:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2025-03-04 10:20:17,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6242424242424243 [2025-03-04 10:20:17,864 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 158 flow. Second operand 3 states and 103 transitions. [2025-03-04 10:20:17,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 404 flow [2025-03-04 10:20:18,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 10:20:18,242 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 168 flow [2025-03-04 10:20:18,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2025-03-04 10:20:18,243 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2025-03-04 10:20:18,243 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 168 flow [2025-03-04 10:20:18,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:20:18,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:20:18,243 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:20:18,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 10:20:18,244 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-04 10:20:18,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:20:18,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1315293904, now seen corresponding path program 5 times [2025-03-04 10:20:18,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:20:18,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140593230] [2025-03-04 10:20:18,244 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 10:20:18,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:20:18,257 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 1 equivalence classes. [2025-03-04 10:20:18,262 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 10:20:18,266 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 10:20:18,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:20:18,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:20:18,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:20:18,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140593230] [2025-03-04 10:20:18,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140593230] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:20:18,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:20:18,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:20:18,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913495058] [2025-03-04 10:20:18,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:20:18,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:20:18,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:20:18,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:20:18,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:20:18,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2025-03-04 10:20:18,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:20:18,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:20:18,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2025-03-04 10:20:18,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:20:21,370 INFO L124 PetriNetUnfolderBase]: 52177/70768 cut-off events. [2025-03-04 10:20:21,370 INFO L125 PetriNetUnfolderBase]: For 37300/37300 co-relation queries the response was YES. [2025-03-04 10:20:21,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176471 conditions, 70768 events. 52177/70768 cut-off events. For 37300/37300 co-relation queries the response was YES. Maximal size of possible extension queue 2181. Compared 426518 event pairs, 30812 based on Foata normal form. 1994/72761 useless extension candidates. Maximal degree in co-relation 66406. Up to 47081 conditions per place. [2025-03-04 10:20:21,548 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 62 selfloop transitions, 2 changer transitions 9/78 dead transitions. [2025-03-04 10:20:21,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 78 transitions, 410 flow [2025-03-04 10:20:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:20:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:20:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2025-03-04 10:20:21,552 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2025-03-04 10:20:21,552 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 168 flow. Second operand 3 states and 100 transitions. [2025-03-04 10:20:21,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 78 transitions, 410 flow [2025-03-04 10:20:21,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 78 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 10:20:21,664 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 160 flow [2025-03-04 10:20:21,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2025-03-04 10:20:21,664 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -4 predicate places. [2025-03-04 10:20:21,664 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 160 flow [2025-03-04 10:20:21,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:20:21,664 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:20:21,664 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:20:21,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 10:20:21,665 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-04 10:20:21,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:20:21,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1346893600, now seen corresponding path program 6 times [2025-03-04 10:20:21,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:20:21,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444000659] [2025-03-04 10:20:21,665 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 10:20:21,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:20:21,672 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 1 equivalence classes. [2025-03-04 10:20:21,676 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 10:20:21,677 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-04 10:20:21,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:20:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:20:21,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:20:21,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444000659] [2025-03-04 10:20:21,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444000659] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:20:21,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:20:21,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:20:21,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160603478] [2025-03-04 10:20:21,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:20:21,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:20:21,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:20:21,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:20:21,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:20:21,727 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2025-03-04 10:20:21,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:20:21,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:20:21,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2025-03-04 10:20:21,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:20:23,256 INFO L124 PetriNetUnfolderBase]: 27255/37556 cut-off events. [2025-03-04 10:20:23,256 INFO L125 PetriNetUnfolderBase]: For 24224/24224 co-relation queries the response was YES. [2025-03-04 10:20:23,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98176 conditions, 37556 events. 27255/37556 cut-off events. For 24224/24224 co-relation queries the response was YES. Maximal size of possible extension queue 1415. Compared 219856 event pairs, 13951 based on Foata normal form. 1136/38691 useless extension candidates. Maximal degree in co-relation 43133. Up to 20315 conditions per place. [2025-03-04 10:20:23,370 INFO L140 encePairwiseOnDemand]: 53/55 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2025-03-04 10:20:23,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 337 flow [2025-03-04 10:20:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:20:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:20:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2025-03-04 10:20:23,371 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5515151515151515 [2025-03-04 10:20:23,371 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 160 flow. Second operand 3 states and 91 transitions. [2025-03-04 10:20:23,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 337 flow [2025-03-04 10:20:23,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 330 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-04 10:20:23,520 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2025-03-04 10:20:23,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2025-03-04 10:20:23,521 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -10 predicate places. [2025-03-04 10:20:23,521 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2025-03-04 10:20:23,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 10:20:23,523 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2025-03-04 10:20:23,523 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2025-03-04 10:20:23,523 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2025-03-04 10:20:23,523 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2025-03-04 10:20:23,523 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2025-03-04 10:20:23,523 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2025-03-04 10:20:23,524 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2025-03-04 10:20:23,524 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2025-03-04 10:20:23,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 10:20:23,524 INFO L422 BasicCegarLoop]: Path program histogram: [6] [2025-03-04 10:20:23,526 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 10:20:23,526 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 10:20:23,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 10:20:23 BasicIcfg [2025-03-04 10:20:23,530 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 10:20:23,530 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 10:20:23,530 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 10:20:23,530 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 10:20:23,531 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:20:06" (3/4) ... [2025-03-04 10:20:23,532 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 10:20:23,550 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f0 [2025-03-04 10:20:23,550 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f1 [2025-03-04 10:20:23,550 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f2 [2025-03-04 10:20:23,550 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f3 [2025-03-04 10:20:23,550 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f4 [2025-03-04 10:20:23,550 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f5 [2025-03-04 10:20:23,554 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2025-03-04 10:20:23,554 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2025-03-04 10:20:23,555 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2025-03-04 10:20:23,555 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-04 10:20:23,611 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 10:20:23,611 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 10:20:23,611 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 10:20:23,613 INFO L158 Benchmark]: Toolchain (without parser) took 17705.52ms. Allocated memory was 142.6MB in the beginning and 9.3GB in the end (delta: 9.1GB). Free memory was 112.5MB in the beginning and 7.7GB in the end (delta: -7.6GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2025-03-04 10:20:23,613 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:20:23,613 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.07ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 92.1MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 10:20:23,613 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.51ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 90.1MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:20:23,614 INFO L158 Benchmark]: Boogie Preprocessor took 36.15ms. Allocated memory is still 142.6MB. Free memory was 90.1MB in the beginning and 88.2MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:20:23,614 INFO L158 Benchmark]: IcfgBuilder took 445.30ms. Allocated memory is still 142.6MB. Free memory was 88.2MB in the beginning and 55.1MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-04 10:20:23,615 INFO L158 Benchmark]: TraceAbstraction took 16733.17ms. Allocated memory was 142.6MB in the beginning and 9.3GB in the end (delta: 9.1GB). Free memory was 54.6MB in the beginning and 6.9GB in the end (delta: -6.9GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2025-03-04 10:20:23,615 INFO L158 Benchmark]: Witness Printer took 81.34ms. Allocated memory is still 9.3GB. Free memory was 6.9GB in the beginning and 7.7GB in the end (delta: -788.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-04 10:20:23,616 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 366.07ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 92.1MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.51ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 90.1MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.15ms. Allocated memory is still 142.6MB. Free memory was 90.1MB in the beginning and 88.2MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 445.30ms. Allocated memory is still 142.6MB. Free memory was 88.2MB in the beginning and 55.1MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 16733.17ms. Allocated memory was 142.6MB in the beginning and 9.3GB in the end (delta: 9.1GB). Free memory was 54.6MB in the beginning and 6.9GB in the end (delta: -6.9GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. * Witness Printer took 81.34ms. Allocated memory is still 9.3GB. Free memory was 6.9GB in the beginning and 7.7GB in the end (delta: -788.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 750]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 788]: 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 13 procedures, 89 locations, 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: 16.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 119 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 119 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 564 IncrementalHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 564 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=4, InterpolantAutomatonStates: 18, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 264 NumberOfCodeBlocks, 263 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 258 ConstructedInterpolants, 0 QuantifiedInterpolants, 312 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 10:20:23,630 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