./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version da043454 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 ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:45:40,051 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:45:40,107 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-04-30 10:45:40,110 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:45:40,110 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:45:40,133 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:45:40,134 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:45:40,134 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:45:40,134 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:45:40,134 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:45:40,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:45:40,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:45:40,135 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:45:40,135 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:45:40,135 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:45:40,136 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:45:40,136 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-30 10:45:40,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:45:40,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-30 10:45:40,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:45:40,136 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-30 10:45:40,136 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-30 10:45:40,136 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-30 10:45:40,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:45:40,137 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-30 10:45:40,137 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:45:40,137 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-30 10:45:40,137 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:45:40,137 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:45:40,137 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:45:40,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:45:40,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:45:40,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:45:40,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:45:40,138 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:45:40,138 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:45:40,138 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:45:40,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:45:40,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:45:40,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:45:40,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:45:40,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:45:40,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:45:40,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:45:40,139 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:45:40,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:45:40,139 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 -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2025-04-30 10:45:40,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:45:40,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:45:40,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:45:40,386 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:45:40,387 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:45:40,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2025-04-30 10:45:41,742 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813159831/c7c616855cf349cab4bc9a2dabdc2758/FLAG949880b2c [2025-04-30 10:45:42,037 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:45:42,037 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2025-04-30 10:45:42,057 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813159831/c7c616855cf349cab4bc9a2dabdc2758/FLAG949880b2c [2025-04-30 10:45:42,793 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813159831/c7c616855cf349cab4bc9a2dabdc2758 [2025-04-30 10:45:42,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:45:42,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:45:42,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:45:42,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:45:42,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:45:42,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:45:42" (1/1) ... [2025-04-30 10:45:42,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da09707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:42, skipping insertion in model container [2025-04-30 10:45:42,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:45:42" (1/1) ... [2025-04-30 10:45:42,832 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:45:43,205 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:45:43,216 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:45:43,273 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:45:43,331 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:45:43,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43 WrapperNode [2025-04-30 10:45:43,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:45:43,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:45:43,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:45:43,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:45:43,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43" (1/1) ... [2025-04-30 10:45:43,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43" (1/1) ... [2025-04-30 10:45:43,363 INFO L138 Inliner]: procedures = 364, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2025-04-30 10:45:43,363 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:45:43,366 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:45:43,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:45:43,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:45:43,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43" (1/1) ... [2025-04-30 10:45:43,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43" (1/1) ... [2025-04-30 10:45:43,376 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43" (1/1) ... [2025-04-30 10:45:43,385 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]. [2025-04-30 10:45:43,385 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43" (1/1) ... [2025-04-30 10:45:43,385 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43" (1/1) ... [2025-04-30 10:45:43,389 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43" (1/1) ... [2025-04-30 10:45:43,390 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43" (1/1) ... [2025-04-30 10:45:43,391 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43" (1/1) ... [2025-04-30 10:45:43,392 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43" (1/1) ... [2025-04-30 10:45:43,393 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43" (1/1) ... [2025-04-30 10:45:43,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:45:43,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:45:43,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:45:43,396 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:45:43,397 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43" (1/1) ... [2025-04-30 10:45:43,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:45:43,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:45:43,423 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) [2025-04-30 10:45:43,426 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 [2025-04-30 10:45:43,439 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-30 10:45:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-30 10:45:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-30 10:45:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2025-04-30 10:45:43,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2025-04-30 10:45:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-30 10:45:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-30 10:45:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:45:43,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:45:43,441 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-30 10:45:43,541 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:45:43,542 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:45:43,639 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-30 10:45:43,640 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:45:43,747 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:45:43,748 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-30 10:45:43,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:45:43 BoogieIcfgContainer [2025-04-30 10:45:43,748 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:45:43,770 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:45:43,770 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:45:43,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:45:43,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:45:42" (1/3) ... [2025-04-30 10:45:43,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d50007e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:45:43, skipping insertion in model container [2025-04-30 10:45:43,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:45:43" (2/3) ... [2025-04-30 10:45:43,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d50007e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:45:43, skipping insertion in model container [2025-04-30 10:45:43,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:45:43" (3/3) ... [2025-04-30 10:45:43,775 INFO L128 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2025-04-30 10:45:43,783 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:45:43,784 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pthread-demo-datarace-1.i that has 2 procedures, 26 locations, 28 edges, 1 initial locations, 2 loop locations, and 2 error locations. [2025-04-30 10:45:43,784 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-30 10:45:43,808 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-04-30 10:45:43,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 29 transitions, 65 flow [2025-04-30 10:45:43,846 INFO L116 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-04-30 10:45:43,847 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-30 10:45:43,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 4/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2025-04-30 10:45:43,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 29 transitions, 65 flow [2025-04-30 10:45:43,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 27 transitions, 60 flow [2025-04-30 10:45:43,861 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:45:43,868 INFO L340 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;@1a5a06da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:45:43,869 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-30 10:45:43,875 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-30 10:45:43,876 INFO L116 PetriNetUnfolderBase]: 4/25 cut-off events. [2025-04-30 10:45:43,876 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-30 10:45:43,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:45:43,876 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:45:43,877 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:45:43,882 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:45:43,882 INFO L85 PathProgramCache]: Analyzing trace with hash 175471508, now seen corresponding path program 1 times [2025-04-30 10:45:43,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:45:43,887 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954658355] [2025-04-30 10:45:43,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:45:43,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:45:43,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-30 10:45:43,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-30 10:45:43,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:45:43,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:45:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:45:44,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:45:44,041 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954658355] [2025-04-30 10:45:44,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954658355] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:45:44,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:45:44,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:45:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589874167] [2025-04-30 10:45:44,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:45:44,049 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:45:44,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:45:44,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:45:44,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:45:44,071 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-04-30 10:45:44,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2025-04-30 10:45:44,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:45:44,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-04-30 10:45:44,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:45:44,133 INFO L116 PetriNetUnfolderBase]: 61/136 cut-off events. [2025-04-30 10:45:44,133 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-30 10:45:44,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 136 events. 61/136 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 415 event pairs, 27 based on Foata normal form. 9/144 useless extension candidates. Maximal degree in co-relation 248. Up to 78 conditions per place. [2025-04-30 10:45:44,135 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 2 changer transitions 1/32 dead transitions. [2025-04-30 10:45:44,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 124 flow [2025-04-30 10:45:44,137 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:45:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:45:44,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2025-04-30 10:45:44,145 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2025-04-30 10:45:44,146 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2025-04-30 10:45:44,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 124 flow [2025-04-30 10:45:44,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-30 10:45:44,150 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 56 flow [2025-04-30 10:45:44,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2025-04-30 10:45:44,154 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2025-04-30 10:45:44,155 INFO L485 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 56 flow [2025-04-30 10:45:44,155 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2025-04-30 10:45:44,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:45:44,155 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:45:44,155 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:45:44,156 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:45:44,156 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:45:44,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1797521127, now seen corresponding path program 1 times [2025-04-30 10:45:44,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:45:44,157 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861569893] [2025-04-30 10:45:44,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:45:44,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:45:44,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-30 10:45:44,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-30 10:45:44,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:45:44,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:45:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-30 10:45:44,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:45:44,225 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861569893] [2025-04-30 10:45:44,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861569893] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:45:44,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:45:44,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:45:44,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83068495] [2025-04-30 10:45:44,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:45:44,226 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:45:44,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:45:44,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:45:44,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:45:44,228 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-04-30 10:45:44,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2025-04-30 10:45:44,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:45:44,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-04-30 10:45:44,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:45:44,289 INFO L116 PetriNetUnfolderBase]: 91/208 cut-off events. [2025-04-30 10:45:44,290 INFO L117 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2025-04-30 10:45:44,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 208 events. 91/208 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 733 event pairs, 46 based on Foata normal form. 9/217 useless extension candidates. Maximal degree in co-relation 144. Up to 114 conditions per place. [2025-04-30 10:45:44,291 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 25 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2025-04-30 10:45:44,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 138 flow [2025-04-30 10:45:44,292 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:45:44,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:45:44,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2025-04-30 10:45:44,292 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2025-04-30 10:45:44,292 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 3 states and 50 transitions. [2025-04-30 10:45:44,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 138 flow [2025-04-30 10:45:44,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 32 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:45:44,293 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 66 flow [2025-04-30 10:45:44,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=26, PETRI_TRANSITIONS=23} [2025-04-30 10:45:44,294 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2025-04-30 10:45:44,294 INFO L485 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 66 flow [2025-04-30 10:45:44,294 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2025-04-30 10:45:44,295 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:45:44,295 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] [2025-04-30 10:45:44,295 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-30 10:45:44,295 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:45:44,296 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:45:44,296 INFO L85 PathProgramCache]: Analyzing trace with hash 397084116, now seen corresponding path program 1 times [2025-04-30 10:45:44,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:45:44,299 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635598067] [2025-04-30 10:45:44,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:45:44,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:45:44,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-30 10:45:44,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-30 10:45:44,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:45:44,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:45:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:45:44,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:45:44,425 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635598067] [2025-04-30 10:45:44,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635598067] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:45:44,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:45:44,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:45:44,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85033506] [2025-04-30 10:45:44,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:45:44,425 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:45:44,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:45:44,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:45:44,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:45:44,426 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-04-30 10:45:44,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2025-04-30 10:45:44,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:45:44,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-04-30 10:45:44,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:45:44,517 INFO L116 PetriNetUnfolderBase]: 59/154 cut-off events. [2025-04-30 10:45:44,520 INFO L117 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2025-04-30 10:45:44,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 154 events. 59/154 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 463 event pairs, 20 based on Foata normal form. 16/169 useless extension candidates. Maximal degree in co-relation 117. Up to 72 conditions per place. [2025-04-30 10:45:44,521 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 21 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2025-04-30 10:45:44,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 30 transitions, 146 flow [2025-04-30 10:45:44,523 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:45:44,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:45:44,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2025-04-30 10:45:44,524 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2025-04-30 10:45:44,524 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 66 flow. Second operand 3 states and 47 transitions. [2025-04-30 10:45:44,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 30 transitions, 146 flow [2025-04-30 10:45:44,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:45:44,525 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 72 flow [2025-04-30 10:45:44,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2025-04-30 10:45:44,525 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2025-04-30 10:45:44,525 INFO L485 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 72 flow [2025-04-30 10:45:44,525 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2025-04-30 10:45:44,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:45:44,526 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] [2025-04-30 10:45:44,526 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-30 10:45:44,526 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:45:44,526 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:45:44,526 INFO L85 PathProgramCache]: Analyzing trace with hash 5271010, now seen corresponding path program 2 times [2025-04-30 10:45:44,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:45:44,526 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032632125] [2025-04-30 10:45:44,526 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:45:44,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:45:44,538 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 1 equivalence classes. [2025-04-30 10:45:44,545 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-30 10:45:44,545 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-30 10:45:44,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:45:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:45:44,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:45:44,593 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032632125] [2025-04-30 10:45:44,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032632125] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:45:44,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:45:44,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:45:44,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546045629] [2025-04-30 10:45:44,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:45:44,594 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:45:44,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:45:44,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:45:44,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:45:44,597 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-04-30 10:45:44,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-04-30 10:45:44,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:45:44,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-04-30 10:45:44,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:45:44,673 INFO L116 PetriNetUnfolderBase]: 79/217 cut-off events. [2025-04-30 10:45:44,673 INFO L117 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2025-04-30 10:45:44,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 217 events. 79/217 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 716 event pairs, 18 based on Foata normal form. 9/226 useless extension candidates. Maximal degree in co-relation 180. Up to 90 conditions per place. [2025-04-30 10:45:44,676 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 34 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2025-04-30 10:45:44,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 42 transitions, 214 flow [2025-04-30 10:45:44,677 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:45:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-30 10:45:44,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2025-04-30 10:45:44,679 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5775862068965517 [2025-04-30 10:45:44,679 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 72 flow. Second operand 4 states and 67 transitions. [2025-04-30 10:45:44,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 42 transitions, 214 flow [2025-04-30 10:45:44,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:45:44,682 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 84 flow [2025-04-30 10:45:44,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2025-04-30 10:45:44,682 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2025-04-30 10:45:44,682 INFO L485 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 84 flow [2025-04-30 10:45:44,682 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-04-30 10:45:44,682 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:45:44,683 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:45:44,683 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-30 10:45:44,683 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:45:44,683 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:45:44,683 INFO L85 PathProgramCache]: Analyzing trace with hash 657525461, now seen corresponding path program 3 times [2025-04-30 10:45:44,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:45:44,683 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751366997] [2025-04-30 10:45:44,683 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:45:44,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:45:44,695 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-30 10:45:44,702 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 26 statements. [2025-04-30 10:45:44,702 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-30 10:45:44,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:45:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-30 10:45:44,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:45:44,744 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751366997] [2025-04-30 10:45:44,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751366997] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:45:44,744 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149108805] [2025-04-30 10:45:44,744 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:45:44,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:45:44,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:45:44,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-30 10:45:44,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-30 10:45:44,794 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 3 equivalence classes. [2025-04-30 10:45:44,809 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 26 statements. [2025-04-30 10:45:44,810 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-30 10:45:44,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:45:44,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-30 10:45:44,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:45:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-30 10:45:44,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:45:44,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-30 10:45:44,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149108805] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:45:44,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:45:44,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-04-30 10:45:44,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000336268] [2025-04-30 10:45:44,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:45:44,903 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-30 10:45:44,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:45:44,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-30 10:45:44,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-30 10:45:44,910 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-04-30 10:45:44,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 84 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:45:44,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:45:44,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-04-30 10:45:44,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:45:45,020 INFO L116 PetriNetUnfolderBase]: 227/523 cut-off events. [2025-04-30 10:45:45,021 INFO L117 PetriNetUnfolderBase]: For 454/454 co-relation queries the response was YES. [2025-04-30 10:45:45,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 523 events. 227/523 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1972 event pairs, 35 based on Foata normal form. 42/565 useless extension candidates. Maximal degree in co-relation 428. Up to 118 conditions per place. [2025-04-30 10:45:45,026 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 62 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2025-04-30 10:45:45,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 71 transitions, 420 flow [2025-04-30 10:45:45,027 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-30 10:45:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-30 10:45:45,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2025-04-30 10:45:45,028 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2025-04-30 10:45:45,028 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 84 flow. Second operand 6 states and 97 transitions. [2025-04-30 10:45:45,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 71 transitions, 420 flow [2025-04-30 10:45:45,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 71 transitions, 390 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-04-30 10:45:45,030 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 118 flow [2025-04-30 10:45:45,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2025-04-30 10:45:45,030 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2025-04-30 10:45:45,030 INFO L485 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 118 flow [2025-04-30 10:45:45,030 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:45:45,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:45:45,030 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:45:45,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-30 10:45:45,236 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:45:45,236 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:45:45,237 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:45:45,237 INFO L85 PathProgramCache]: Analyzing trace with hash -538210307, now seen corresponding path program 4 times [2025-04-30 10:45:45,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:45:45,238 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878606158] [2025-04-30 10:45:45,238 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-30 10:45:45,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:45:45,266 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 41 statements into 2 equivalence classes. [2025-04-30 10:45:45,285 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-04-30 10:45:45,286 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-30 10:45:45,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:45:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-04-30 10:45:45,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:45:45,363 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878606158] [2025-04-30 10:45:45,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878606158] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:45:45,363 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204001364] [2025-04-30 10:45:45,363 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-30 10:45:45,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:45:45,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:45:45,365 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-30 10:45:45,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-30 10:45:45,416 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 41 statements into 2 equivalence classes. [2025-04-30 10:45:45,440 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-04-30 10:45:45,440 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-30 10:45:45,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:45:45,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-30 10:45:45,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:45:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-30 10:45:45,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:45:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-30 10:45:45,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204001364] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:45:45,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:45:45,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-04-30 10:45:45,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583400767] [2025-04-30 10:45:45,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:45:45,612 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-30 10:45:45,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:45:45,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-30 10:45:45,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2025-04-30 10:45:45,627 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-04-30 10:45:45,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 118 flow. Second operand has 15 states, 15 states have (on average 11.533333333333333) internal successors, (173), 15 states have internal predecessors, (173), 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) [2025-04-30 10:45:45,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:45:45,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-04-30 10:45:45,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:45:46,365 INFO L116 PetriNetUnfolderBase]: 635/1471 cut-off events. [2025-04-30 10:45:46,367 INFO L117 PetriNetUnfolderBase]: For 2116/2116 co-relation queries the response was YES. [2025-04-30 10:45:46,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4649 conditions, 1471 events. 635/1471 cut-off events. For 2116/2116 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6518 event pairs, 10 based on Foata normal form. 161/1632 useless extension candidates. Maximal degree in co-relation 1299. Up to 265 conditions per place. [2025-04-30 10:45:46,377 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 323 selfloop transitions, 92 changer transitions 0/418 dead transitions. [2025-04-30 10:45:46,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 418 transitions, 2488 flow [2025-04-30 10:45:46,378 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-04-30 10:45:46,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2025-04-30 10:45:46,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 720 transitions. [2025-04-30 10:45:46,380 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-04-30 10:45:46,380 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 118 flow. Second operand 45 states and 720 transitions. [2025-04-30 10:45:46,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 418 transitions, 2488 flow [2025-04-30 10:45:46,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 418 transitions, 2408 flow, removed 36 selfloop flow, removed 1 redundant places. [2025-04-30 10:45:46,420 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 994 flow [2025-04-30 10:45:46,421 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=994, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2025-04-30 10:45:46,421 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 85 predicate places. [2025-04-30 10:45:46,421 INFO L485 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 994 flow [2025-04-30 10:45:46,422 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.533333333333333) internal successors, (173), 15 states have internal predecessors, (173), 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) [2025-04-30 10:45:46,422 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:45:46,422 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:45:46,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-30 10:45:46,623 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-04-30 10:45:46,623 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:45:46,625 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:45:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash 862779460, now seen corresponding path program 5 times [2025-04-30 10:45:46,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:45:46,626 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5699364] [2025-04-30 10:45:46,626 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-30 10:45:46,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:45:46,639 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 76 statements into 11 equivalence classes. [2025-04-30 10:45:46,663 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 76 of 76 statements. [2025-04-30 10:45:46,663 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-04-30 10:45:46,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:45:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2025-04-30 10:45:46,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:45:46,750 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5699364] [2025-04-30 10:45:46,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5699364] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:45:46,750 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288897208] [2025-04-30 10:45:46,750 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-30 10:45:46,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:45:46,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:45:46,755 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-30 10:45:46,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-30 10:45:46,816 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 76 statements into 11 equivalence classes. [2025-04-30 10:45:46,857 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 76 of 76 statements. [2025-04-30 10:45:46,858 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-04-30 10:45:46,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:45:46,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-30 10:45:46,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:45:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-04-30 10:45:47,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:45:47,258 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-04-30 10:45:47,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288897208] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:45:47,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:45:47,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 13] total 26 [2025-04-30 10:45:47,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435504072] [2025-04-30 10:45:47,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:45:47,259 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-30 10:45:47,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:45:47,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-30 10:45:47,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=405, Unknown=0, NotChecked=0, Total=650 [2025-04-30 10:45:47,275 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-04-30 10:45:47,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 994 flow. Second operand has 26 states, 26 states have (on average 11.26923076923077) internal successors, (293), 26 states have internal predecessors, (293), 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) [2025-04-30 10:45:47,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:45:47,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-04-30 10:45:47,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:45:49,607 INFO L116 PetriNetUnfolderBase]: 1467/3367 cut-off events. [2025-04-30 10:45:49,608 INFO L117 PetriNetUnfolderBase]: For 123719/123719 co-relation queries the response was YES. [2025-04-30 10:45:49,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16941 conditions, 3367 events. 1467/3367 cut-off events. For 123719/123719 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 16304 event pairs, 10 based on Foata normal form. 323/3690 useless extension candidates. Maximal degree in co-relation 14759. Up to 618 conditions per place. [2025-04-30 10:45:49,637 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 767 selfloop transitions, 255 changer transitions 0/1025 dead transitions. [2025-04-30 10:45:49,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 1025 transitions, 8916 flow [2025-04-30 10:45:49,638 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2025-04-30 10:45:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2025-04-30 10:45:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1689 transitions. [2025-04-30 10:45:49,642 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5494469746258946 [2025-04-30 10:45:49,642 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 994 flow. Second operand 106 states and 1689 transitions. [2025-04-30 10:45:49,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 1025 transitions, 8916 flow [2025-04-30 10:45:49,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 1025 transitions, 8638 flow, removed 62 selfloop flow, removed 5 redundant places. [2025-04-30 10:45:49,731 INFO L231 Difference]: Finished difference. Result has 277 places, 278 transitions, 3730 flow [2025-04-30 10:45:49,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=3730, PETRI_PLACES=277, PETRI_TRANSITIONS=278} [2025-04-30 10:45:49,733 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 250 predicate places. [2025-04-30 10:45:49,733 INFO L485 AbstractCegarLoop]: Abstraction has has 277 places, 278 transitions, 3730 flow [2025-04-30 10:45:49,733 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.26923076923077) internal successors, (293), 26 states have internal predecessors, (293), 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) [2025-04-30 10:45:49,734 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:45:49,734 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:45:49,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-30 10:45:49,934 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:45:49,934 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:45:49,935 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:45:49,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1767119403, now seen corresponding path program 6 times [2025-04-30 10:45:49,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:45:49,935 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815811828] [2025-04-30 10:45:49,935 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-30 10:45:49,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:45:49,956 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 131 statements into 21 equivalence classes. [2025-04-30 10:45:49,975 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 71 of 131 statements. [2025-04-30 10:45:49,976 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-04-30 10:45:49,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:45:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-04-30 10:45:50,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:45:50,121 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815811828] [2025-04-30 10:45:50,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815811828] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:45:50,121 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001121625] [2025-04-30 10:45:50,121 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-30 10:45:50,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:45:50,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:45:50,123 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-30 10:45:50,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-30 10:45:50,196 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 131 statements into 21 equivalence classes. [2025-04-30 10:45:50,243 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 71 of 131 statements. [2025-04-30 10:45:50,244 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-04-30 10:45:50,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:45:50,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-30 10:45:50,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:45:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-04-30 10:45:50,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:45:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-04-30 10:45:50,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001121625] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:45:50,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:45:50,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-30 10:45:50,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734050156] [2025-04-30 10:45:50,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:45:50,531 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-30 10:45:50,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:45:50,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-30 10:45:50,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-04-30 10:45:50,539 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-04-30 10:45:50,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 278 transitions, 3730 flow. Second operand has 13 states, 13 states have (on average 12.0) internal successors, (156), 13 states have internal predecessors, (156), 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) [2025-04-30 10:45:50,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:45:50,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-04-30 10:45:50,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:45:52,091 INFO L116 PetriNetUnfolderBase]: 2885/6819 cut-off events. [2025-04-30 10:45:52,091 INFO L117 PetriNetUnfolderBase]: For 506755/507041 co-relation queries the response was YES. [2025-04-30 10:45:52,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49049 conditions, 6819 events. 2885/6819 cut-off events. For 506755/507041 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 41031 event pairs, 372 based on Foata normal form. 610/7259 useless extension candidates. Maximal degree in co-relation 45985. Up to 1113 conditions per place. [2025-04-30 10:45:52,162 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 310 selfloop transitions, 152 changer transitions 0/476 dead transitions. [2025-04-30 10:45:52,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 476 transitions, 6736 flow [2025-04-30 10:45:52,165 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-30 10:45:52,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-30 10:45:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2025-04-30 10:45:52,166 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-04-30 10:45:52,166 INFO L175 Difference]: Start difference. First operand has 277 places, 278 transitions, 3730 flow. Second operand 12 states and 203 transitions. [2025-04-30 10:45:52,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 476 transitions, 6736 flow [2025-04-30 10:45:52,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 476 transitions, 5944 flow, removed 261 selfloop flow, removed 36 redundant places. [2025-04-30 10:45:52,724 INFO L231 Difference]: Finished difference. Result has 259 places, 284 transitions, 3782 flow [2025-04-30 10:45:52,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3046, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3782, PETRI_PLACES=259, PETRI_TRANSITIONS=284} [2025-04-30 10:45:52,725 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 232 predicate places. [2025-04-30 10:45:52,725 INFO L485 AbstractCegarLoop]: Abstraction has has 259 places, 284 transitions, 3782 flow [2025-04-30 10:45:52,725 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.0) internal successors, (156), 13 states have internal predecessors, (156), 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) [2025-04-30 10:45:52,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:45:52,725 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:45:52,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-30 10:45:52,926 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:45:52,926 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:45:52,927 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:45:52,927 INFO L85 PathProgramCache]: Analyzing trace with hash 404345247, now seen corresponding path program 7 times [2025-04-30 10:45:52,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:45:52,927 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855115062] [2025-04-30 10:45:52,927 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-30 10:45:52,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:45:52,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-04-30 10:45:52,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-04-30 10:45:52,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:45:52,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:45:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-04-30 10:45:53,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:45:53,311 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855115062] [2025-04-30 10:45:53,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855115062] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:45:53,311 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280676431] [2025-04-30 10:45:53,311 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-30 10:45:53,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:45:53,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:45:53,313 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-30 10:45:53,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-30 10:45:53,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-04-30 10:45:53,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-04-30 10:45:53,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:45:53,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:45:53,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-30 10:45:53,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:45:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-04-30 10:45:53,628 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:45:53,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-04-30 10:45:53,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280676431] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:45:53,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:45:53,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2025-04-30 10:45:53,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565742569] [2025-04-30 10:45:53,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:45:53,815 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-30 10:45:53,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:45:53,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-30 10:45:53,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-04-30 10:45:53,821 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-04-30 10:45:53,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 284 transitions, 3782 flow. Second operand has 23 states, 23 states have (on average 12.0) internal successors, (276), 23 states have internal predecessors, (276), 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) [2025-04-30 10:45:53,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:45:53,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-04-30 10:45:53,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:45:56,969 INFO L116 PetriNetUnfolderBase]: 5534/12959 cut-off events. [2025-04-30 10:45:56,969 INFO L117 PetriNetUnfolderBase]: For 1261595/1262151 co-relation queries the response was YES. [2025-04-30 10:45:57,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107840 conditions, 12959 events. 5534/12959 cut-off events. For 1261595/1262151 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 85519 event pairs, 562 based on Foata normal form. 1022/13624 useless extension candidates. Maximal degree in co-relation 100652. Up to 2163 conditions per place. [2025-04-30 10:45:57,136 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 590 selfloop transitions, 162 changer transitions 0/766 dead transitions. [2025-04-30 10:45:57,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 766 transitions, 10306 flow [2025-04-30 10:45:57,141 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-30 10:45:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-04-30 10:45:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 377 transitions. [2025-04-30 10:45:57,145 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-04-30 10:45:57,145 INFO L175 Difference]: Start difference. First operand has 259 places, 284 transitions, 3782 flow. Second operand 22 states and 377 transitions. [2025-04-30 10:45:57,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 766 transitions, 10306 flow [2025-04-30 10:45:58,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 766 transitions, 9556 flow, removed 256 selfloop flow, removed 4 redundant places. [2025-04-30 10:45:58,171 INFO L231 Difference]: Finished difference. Result has 287 places, 295 transitions, 4178 flow [2025-04-30 10:45:58,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4178, PETRI_PLACES=287, PETRI_TRANSITIONS=295} [2025-04-30 10:45:58,172 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 260 predicate places. [2025-04-30 10:45:58,173 INFO L485 AbstractCegarLoop]: Abstraction has has 287 places, 295 transitions, 4178 flow [2025-04-30 10:45:58,173 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.0) internal successors, (276), 23 states have internal predecessors, (276), 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) [2025-04-30 10:45:58,173 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:45:58,173 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:45:58,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-30 10:45:58,373 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:45:58,374 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:45:58,375 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:45:58,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1107636523, now seen corresponding path program 8 times [2025-04-30 10:45:58,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:45:58,375 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681890280] [2025-04-30 10:45:58,375 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:45:58,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:45:58,397 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 211 statements into 2 equivalence classes. [2025-04-30 10:45:58,438 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 211 of 211 statements. [2025-04-30 10:45:58,439 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-30 10:45:58,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:46:00,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:46:00,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:46:00,591 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681890280] [2025-04-30 10:46:00,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681890280] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:46:00,591 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92534313] [2025-04-30 10:46:00,591 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:46:00,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:46:00,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:46:00,593 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-30 10:46:00,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-30 10:46:00,698 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 211 statements into 2 equivalence classes. [2025-04-30 10:46:00,776 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 211 of 211 statements. [2025-04-30 10:46:00,776 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-30 10:46:00,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:46:00,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 125 conjuncts are in the unsatisfiable core [2025-04-30 10:46:00,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:46:01,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:46:01,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:46:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:46:01,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92534313] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:46:01,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:46:01,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2025-04-30 10:46:01,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740551263] [2025-04-30 10:46:01,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:46:01,317 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-04-30 10:46:01,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:46:01,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-04-30 10:46:01,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2025-04-30 10:46:01,320 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-04-30 10:46:01,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 295 transitions, 4178 flow. Second operand has 45 states, 45 states have (on average 10.777777777777779) internal successors, (485), 45 states have internal predecessors, (485), 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) [2025-04-30 10:46:01,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:46:01,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-04-30 10:46:01,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:46:11,833 INFO L116 PetriNetUnfolderBase]: 9008/23501 cut-off events. [2025-04-30 10:46:11,833 INFO L117 PetriNetUnfolderBase]: For 2526079/2531325 co-relation queries the response was YES. [2025-04-30 10:46:12,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232928 conditions, 23501 events. 9008/23501 cut-off events. For 2526079/2531325 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 187911 event pairs, 1885 based on Foata normal form. 329/23245 useless extension candidates. Maximal degree in co-relation 227933. Up to 5037 conditions per place. [2025-04-30 10:46:12,115 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 1960 selfloop transitions, 83 changer transitions 2/2062 dead transitions. [2025-04-30 10:46:12,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 2062 transitions, 44121 flow [2025-04-30 10:46:12,116 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-04-30 10:46:12,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-04-30 10:46:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 754 transitions. [2025-04-30 10:46:12,117 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-04-30 10:46:12,117 INFO L175 Difference]: Start difference. First operand has 287 places, 295 transitions, 4178 flow. Second operand 44 states and 754 transitions. [2025-04-30 10:46:12,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 2062 transitions, 44121 flow [2025-04-30 10:46:18,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 2062 transitions, 43018 flow, removed 0 selfloop flow, removed 9 redundant places. [2025-04-30 10:46:18,870 INFO L231 Difference]: Finished difference. Result has 323 places, 377 transitions, 4252 flow [2025-04-30 10:46:18,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3910, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4252, PETRI_PLACES=323, PETRI_TRANSITIONS=377} [2025-04-30 10:46:18,871 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 296 predicate places. [2025-04-30 10:46:18,871 INFO L485 AbstractCegarLoop]: Abstraction has has 323 places, 377 transitions, 4252 flow [2025-04-30 10:46:18,871 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 10.777777777777779) internal successors, (485), 45 states have internal predecessors, (485), 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) [2025-04-30 10:46:18,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:46:18,871 INFO L206 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:46:18,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-30 10:46:19,072 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:46:19,072 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:46:19,074 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:46:19,074 INFO L85 PathProgramCache]: Analyzing trace with hash -498036834, now seen corresponding path program 9 times [2025-04-30 10:46:19,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:46:19,074 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90975334] [2025-04-30 10:46:19,074 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:46:19,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:46:19,100 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 216 statements into 21 equivalence classes. [2025-04-30 10:46:19,162 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 206 of 216 statements. [2025-04-30 10:46:19,162 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-04-30 10:46:19,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:46:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2142 backedges. 1716 proven. 57 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2025-04-30 10:46:19,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:46:19,713 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90975334] [2025-04-30 10:46:19,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90975334] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:46:19,713 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844040950] [2025-04-30 10:46:19,713 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:46:19,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:46:19,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:46:19,715 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-30 10:46:19,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-30 10:46:19,823 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 216 statements into 21 equivalence classes. [2025-04-30 10:46:20,266 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 206 of 216 statements. [2025-04-30 10:46:20,266 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-04-30 10:46:20,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:46:20,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-04-30 10:46:20,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:46:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2142 backedges. 1773 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2025-04-30 10:46:20,482 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-30 10:46:20,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844040950] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:46:20,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-30 10:46:20,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2025-04-30 10:46:20,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455036392] [2025-04-30 10:46:20,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:46:20,482 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-30 10:46:20,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:46:20,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-30 10:46:20,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2025-04-30 10:46:20,494 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-04-30 10:46:20,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 377 transitions, 4252 flow. Second operand has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 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) [2025-04-30 10:46:20,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:46:20,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-04-30 10:46:20,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:46:25,743 INFO L116 PetriNetUnfolderBase]: 8505/19899 cut-off events. [2025-04-30 10:46:25,744 INFO L117 PetriNetUnfolderBase]: For 1052862/1058495 co-relation queries the response was YES. [2025-04-30 10:46:25,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144110 conditions, 19899 events. 8505/19899 cut-off events. For 1052862/1058495 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 145225 event pairs, 675 based on Foata normal form. 499/19789 useless extension candidates. Maximal degree in co-relation 143977. Up to 3296 conditions per place. [2025-04-30 10:46:25,999 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 1936 selfloop transitions, 161 changer transitions 0/2111 dead transitions. [2025-04-30 10:46:25,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 2111 transitions, 18098 flow [2025-04-30 10:46:26,000 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-30 10:46:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-04-30 10:46:26,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 379 transitions. [2025-04-30 10:46:26,001 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.568215892053973 [2025-04-30 10:46:26,001 INFO L175 Difference]: Start difference. First operand has 323 places, 377 transitions, 4252 flow. Second operand 23 states and 379 transitions. [2025-04-30 10:46:26,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 2111 transitions, 18098 flow [2025-04-30 10:46:29,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 2111 transitions, 18064 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-30 10:46:30,009 INFO L231 Difference]: Finished difference. Result has 342 places, 376 transitions, 4530 flow [2025-04-30 10:46:30,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4208, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4530, PETRI_PLACES=342, PETRI_TRANSITIONS=376} [2025-04-30 10:46:30,010 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 315 predicate places. [2025-04-30 10:46:30,010 INFO L485 AbstractCegarLoop]: Abstraction has has 342 places, 376 transitions, 4530 flow [2025-04-30 10:46:30,010 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 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) [2025-04-30 10:46:30,010 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:46:30,010 INFO L206 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:46:30,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-04-30 10:46:30,211 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:46:30,211 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-30 10:46:30,212 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:46:30,212 INFO L85 PathProgramCache]: Analyzing trace with hash 226195673, now seen corresponding path program 10 times [2025-04-30 10:46:30,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:46:30,213 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479351424] [2025-04-30 10:46:30,213 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-30 10:46:30,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:46:30,231 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 216 statements into 2 equivalence classes. [2025-04-30 10:46:30,264 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 216 of 216 statements. [2025-04-30 10:46:30,265 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-30 10:46:30,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:46:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1071 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-04-30 10:46:30,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:46:30,753 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479351424] [2025-04-30 10:46:30,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479351424] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:46:30,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:46:30,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2025-04-30 10:46:30,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926512503] [2025-04-30 10:46:30,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:46:30,754 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-30 10:46:30,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:46:30,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-30 10:46:30,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-04-30 10:46:30,764 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-04-30 10:46:30,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 376 transitions, 4530 flow. Second operand has 23 states, 23 states have (on average 11.130434782608695) internal successors, (256), 23 states have internal predecessors, (256), 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) [2025-04-30 10:46:30,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:46:30,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-04-30 10:46:30,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:46:33,815 INFO L116 PetriNetUnfolderBase]: 5164/12157 cut-off events. [2025-04-30 10:46:33,816 INFO L117 PetriNetUnfolderBase]: For 814428/814428 co-relation queries the response was YES. [2025-04-30 10:46:33,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96126 conditions, 12157 events. 5164/12157 cut-off events. For 814428/814428 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 82351 event pairs, 53 based on Foata normal form. 83/12239 useless extension candidates. Maximal degree in co-relation 95305. Up to 2469 conditions per place. [2025-04-30 10:46:33,946 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 0 selfloop transitions, 0 changer transitions 1649/1649 dead transitions. [2025-04-30 10:46:33,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 1649 transitions, 29605 flow [2025-04-30 10:46:33,946 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-30 10:46:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-04-30 10:46:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 376 transitions. [2025-04-30 10:46:33,951 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5637181409295352 [2025-04-30 10:46:33,951 INFO L175 Difference]: Start difference. First operand has 342 places, 376 transitions, 4530 flow. Second operand 23 states and 376 transitions. [2025-04-30 10:46:33,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 1649 transitions, 29605 flow [2025-04-30 10:46:36,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 1649 transitions, 28619 flow, removed 0 selfloop flow, removed 23 redundant places. [2025-04-30 10:46:36,163 INFO L231 Difference]: Finished difference. Result has 337 places, 0 transitions, 0 flow [2025-04-30 10:46:36,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4108, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=337, PETRI_TRANSITIONS=0} [2025-04-30 10:46:36,164 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 310 predicate places. [2025-04-30 10:46:36,164 INFO L485 AbstractCegarLoop]: Abstraction has has 337 places, 0 transitions, 0 flow [2025-04-30 10:46:36,164 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.130434782608695) internal successors, (256), 23 states have internal predecessors, (256), 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) [2025-04-30 10:46:36,166 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 3 remaining) [2025-04-30 10:46:36,166 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 3 remaining) [2025-04-30 10:46:36,166 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-30 10:46:36,167 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-30 10:46:36,167 INFO L422 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2025-04-30 10:46:36,169 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-30 10:46:36,169 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-30 10:46:36,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 10:46:36 BasicIcfg [2025-04-30 10:46:36,172 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-30 10:46:36,173 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-30 10:46:36,173 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-30 10:46:36,173 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-30 10:46:36,173 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:45:43" (3/4) ... [2025-04-30 10:46:36,175 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-30 10:46:36,177 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_function_mutex [2025-04-30 10:46:36,179 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2025-04-30 10:46:36,179 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2025-04-30 10:46:36,179 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-04-30 10:46:36,179 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-04-30 10:46:36,235 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-30 10:46:36,236 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-30 10:46:36,236 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-30 10:46:36,237 INFO L158 Benchmark]: Toolchain (without parser) took 53440.15ms. Allocated memory was 142.6MB in the beginning and 3.0GB in the end (delta: 2.9GB). Free memory was 110.1MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2025-04-30 10:46:36,237 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:46:36,237 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.71ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 69.2MB in the end (delta: 40.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-04-30 10:46:36,237 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.56ms. Allocated memory is still 142.6MB. Free memory was 69.2MB in the beginning and 66.8MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:46:36,237 INFO L158 Benchmark]: Boogie Preprocessor took 29.71ms. Allocated memory is still 142.6MB. Free memory was 66.8MB in the beginning and 65.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:46:36,238 INFO L158 Benchmark]: RCFGBuilder took 352.35ms. Allocated memory is still 142.6MB. Free memory was 65.1MB in the beginning and 39.6MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-30 10:46:36,238 INFO L158 Benchmark]: TraceAbstraction took 52402.19ms. Allocated memory was 142.6MB in the beginning and 3.0GB in the end (delta: 2.9GB). Free memory was 108.0MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2025-04-30 10:46:36,238 INFO L158 Benchmark]: Witness Printer took 63.38ms. Allocated memory is still 3.0GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:46:36,239 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 534.71ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 69.2MB in the end (delta: 40.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.56ms. Allocated memory is still 142.6MB. Free memory was 69.2MB in the beginning and 66.8MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.71ms. Allocated memory is still 142.6MB. Free memory was 66.8MB in the beginning and 65.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 352.35ms. Allocated memory is still 142.6MB. Free memory was 65.1MB in the beginning and 39.6MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 52402.19ms. Allocated memory was 142.6MB in the beginning and 3.0GB in the end (delta: 2.9GB). Free memory was 108.0MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. * Witness Printer took 63.38ms. Allocated memory is still 3.0GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1334]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 34 locations, 38 edges, 3 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: 52.3s, OverallIterations: 12, TraceHistogramMax: 21, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 42.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2963 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2949 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20975 IncrementalHoareTripleChecker+Invalid, 21029 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 6 mSDtfsCounter, 20975 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1833 GetRequests, 1552 SyntacticMatches, 5 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3947 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4530occurred in iteration=11, InterpolantAutomatonStates: 294, 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: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 2009 NumberOfCodeBlocks, 1859 NumberOfCodeBlocksAsserted, 98 NumberOfCheckSat, 2630 ConstructedInterpolants, 0 QuantifiedInterpolants, 6557 SizeOfPredicates, 22 NumberOfNonLiveVariables, 3380 ConjunctsInSsa, 186 ConjunctsInUnsatCore, 25 InterpolantComputations, 6 PerfectInterpolantSequences, 12396/19626 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! [2025-04-30 10:46:36,252 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