./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:54:55,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:54:55,909 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:54:55,914 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:54:55,914 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:54:55,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:54:55,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:54:55,936 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:54:55,936 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:54:55,936 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:54:55,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:54:55,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:54:55,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:54:55,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:54:55,940 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:54:55,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:54:55,941 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:54:55,941 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:54:55,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:54:55,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:54:55,941 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:54:55,941 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:54:55,941 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:54:55,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:54:55,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:54:55,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:54:55,941 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:54:55,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:54:55,941 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:54:55,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:54:55,941 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:54:55,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:54:55,941 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-jdk21/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 -> 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 [2025-01-10 00:54:56,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:54:56,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:54:56,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:54:56,208 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:54:56,209 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:54:56,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2025-01-10 00:54:57,530 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f593b8780/a5310c74eae34f6988375ef86be34469/FLAGb9aba36d3 [2025-01-10 00:54:57,838 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:54:57,838 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2025-01-10 00:54:57,853 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f593b8780/a5310c74eae34f6988375ef86be34469/FLAGb9aba36d3 [2025-01-10 00:54:57,867 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f593b8780/a5310c74eae34f6988375ef86be34469 [2025-01-10 00:54:57,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:54:57,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:54:57,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:54:57,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:54:57,875 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:54:57,876 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:54:57" (1/1) ... [2025-01-10 00:54:57,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8775b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:57, skipping insertion in model container [2025-01-10 00:54:57,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:54:57" (1/1) ... [2025-01-10 00:54:57,913 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:54:58,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:54:58,263 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:54:58,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:54:58,356 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:54:58,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58 WrapperNode [2025-01-10 00:54:58,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:54:58,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:54:58,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:54:58,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:54:58,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58" (1/1) ... [2025-01-10 00:54:58,384 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58" (1/1) ... [2025-01-10 00:54:58,408 INFO L138 Inliner]: procedures = 364, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 113 [2025-01-10 00:54:58,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:54:58,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:54:58,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:54:58,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:54:58,417 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58" (1/1) ... [2025-01-10 00:54:58,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58" (1/1) ... [2025-01-10 00:54:58,419 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58" (1/1) ... [2025-01-10 00:54:58,431 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-10 00:54:58,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58" (1/1) ... [2025-01-10 00:54:58,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58" (1/1) ... [2025-01-10 00:54:58,435 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58" (1/1) ... [2025-01-10 00:54:58,436 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58" (1/1) ... [2025-01-10 00:54:58,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58" (1/1) ... [2025-01-10 00:54:58,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58" (1/1) ... [2025-01-10 00:54:58,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58" (1/1) ... [2025-01-10 00:54:58,441 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:54:58,442 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:54:58,442 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:54:58,442 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:54:58,443 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58" (1/1) ... [2025-01-10 00:54:58,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:54:58,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:54:58,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 00:54:58,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 00:54:58,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 00:54:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 00:54:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2025-01-10 00:54:58,488 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2025-01-10 00:54:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:54:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 00:54:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:54:58,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:54:58,489 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 00:54:58,596 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:54:58,597 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:54:58,762 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 00:54:58,762 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:54:59,093 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:54:59,093 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 00:54:59,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:54:59 BoogieIcfgContainer [2025-01-10 00:54:59,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:54:59,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:54:59,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:54:59,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:54:59,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:54:57" (1/3) ... [2025-01-10 00:54:59,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7edfd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:54:59, skipping insertion in model container [2025-01-10 00:54:59,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:54:58" (2/3) ... [2025-01-10 00:54:59,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7edfd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:54:59, skipping insertion in model container [2025-01-10 00:54:59,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:54:59" (3/3) ... [2025-01-10 00:54:59,104 INFO L128 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-3.i [2025-01-10 00:54:59,115 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:54:59,117 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pthread-demo-datarace-3.i that has 2 procedures, 24 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-01-10 00:54:59,117 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 00:54:59,177 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-01-10 00:54:59,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 27 transitions, 61 flow [2025-01-10 00:54:59,231 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2025-01-10 00:54:59,233 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 00:54:59,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 26 events. 4/26 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2025-01-10 00:54:59,236 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 27 transitions, 61 flow [2025-01-10 00:54:59,238 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 25 transitions, 56 flow [2025-01-10 00:54:59,246 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:54:59,254 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d59e595, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:54:59,254 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-01-10 00:54:59,260 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:54:59,264 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2025-01-10 00:54:59,264 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 00:54:59,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:54:59,265 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:54:59,265 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-10 00:54:59,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:54:59,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1263433444, now seen corresponding path program 1 times [2025-01-10 00:54:59,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:54:59,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741097118] [2025-01-10 00:54:59,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:54:59,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:54:59,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 00:54:59,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 00:54:59,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:54:59,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:54:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:54:59,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:54:59,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741097118] [2025-01-10 00:54:59,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741097118] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:54:59,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:54:59,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:54:59,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159945034] [2025-01-10 00:54:59,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:54:59,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:54:59,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:54:59,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:54:59,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:54:59,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2025-01-10 00:54:59,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2025-01-10 00:54:59,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:54:59,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2025-01-10 00:54:59,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:54:59,640 INFO L124 PetriNetUnfolderBase]: 17/57 cut-off events. [2025-01-10 00:54:59,643 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 00:54:59,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 57 events. 17/57 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 142 event pairs, 6 based on Foata normal form. 7/63 useless extension candidates. Maximal degree in co-relation 81. Up to 30 conditions per place. [2025-01-10 00:54:59,645 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 15 selfloop transitions, 2 changer transitions 1/25 dead transitions. [2025-01-10 00:54:59,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 25 transitions, 90 flow [2025-01-10 00:54:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:54:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:54:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2025-01-10 00:54:59,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2025-01-10 00:54:59,655 INFO L175 Difference]: Start difference. First operand has 25 places, 25 transitions, 56 flow. Second operand 3 states and 51 transitions. [2025-01-10 00:54:59,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 25 transitions, 90 flow [2025-01-10 00:54:59,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 25 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:54:59,661 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 52 flow [2025-01-10 00:54:59,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2025-01-10 00:54:59,665 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2025-01-10 00:54:59,665 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 52 flow [2025-01-10 00:54:59,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2025-01-10 00:54:59,666 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:54:59,666 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:54:59,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 00:54:59,666 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-10 00:54:59,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:54:59,667 INFO L85 PathProgramCache]: Analyzing trace with hash 998010515, now seen corresponding path program 1 times [2025-01-10 00:54:59,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:54:59,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752093736] [2025-01-10 00:54:59,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:54:59,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:54:59,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 00:54:59,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 00:54:59,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:54:59,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:54:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 00:54:59,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:54:59,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752093736] [2025-01-10 00:54:59,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752093736] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:54:59,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:54:59,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:54:59,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100568091] [2025-01-10 00:54:59,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:54:59,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:54:59,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:54:59,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:54:59,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:54:59,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 27 [2025-01-10 00:54:59,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2025-01-10 00:54:59,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:54:59,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 27 [2025-01-10 00:54:59,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:54:59,833 INFO L124 PetriNetUnfolderBase]: 19/70 cut-off events. [2025-01-10 00:54:59,835 INFO L125 PetriNetUnfolderBase]: For 28/29 co-relation queries the response was YES. [2025-01-10 00:54:59,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 70 events. 19/70 cut-off events. For 28/29 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 6 based on Foata normal form. 3/69 useless extension candidates. Maximal degree in co-relation 24. Up to 30 conditions per place. [2025-01-10 00:54:59,837 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 15 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2025-01-10 00:54:59,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 25 transitions, 104 flow [2025-01-10 00:54:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:54:59,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:54:59,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2025-01-10 00:54:59,838 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2025-01-10 00:54:59,839 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 52 flow. Second operand 3 states and 49 transitions. [2025-01-10 00:54:59,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 25 transitions, 104 flow [2025-01-10 00:54:59,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 25 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:54:59,840 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 62 flow [2025-01-10 00:54:59,840 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2025-01-10 00:54:59,840 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2025-01-10 00:54:59,840 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 62 flow [2025-01-10 00:54:59,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2025-01-10 00:54:59,841 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:54:59,841 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:54:59,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 00:54:59,841 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-10 00:54:59,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:54:59,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1016288308, now seen corresponding path program 1 times [2025-01-10 00:54:59,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:54:59,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133563247] [2025-01-10 00:54:59,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:54:59,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:54:59,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 00:54:59,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 00:54:59,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:54:59,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:54:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 00:54:59,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:54:59,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133563247] [2025-01-10 00:54:59,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133563247] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:54:59,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661827430] [2025-01-10 00:54:59,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:54:59,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:54:59,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:54:59,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:54:59,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 00:55:00,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 00:55:00,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 00:55:00,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:55:00,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:00,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:55:00,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:55:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 00:55:00,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:55:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 00:55:00,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661827430] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:55:00,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:55:00,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-10 00:55:00,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886784010] [2025-01-10 00:55:00,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:55:00,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 00:55:00,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:55:00,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 00:55:00,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:55:00,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2025-01-10 00:55:00,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:55:00,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:55:00,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2025-01-10 00:55:00,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:55:00,229 INFO L124 PetriNetUnfolderBase]: 46/126 cut-off events. [2025-01-10 00:55:00,230 INFO L125 PetriNetUnfolderBase]: For 63/75 co-relation queries the response was YES. [2025-01-10 00:55:00,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 126 events. 46/126 cut-off events. For 63/75 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 285 event pairs, 4 based on Foata normal form. 9/133 useless extension candidates. Maximal degree in co-relation 77. Up to 45 conditions per place. [2025-01-10 00:55:00,231 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 29 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2025-01-10 00:55:00,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 42 transitions, 202 flow [2025-01-10 00:55:00,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:55:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 00:55:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2025-01-10 00:55:00,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2025-01-10 00:55:00,232 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 62 flow. Second operand 6 states and 93 transitions. [2025-01-10 00:55:00,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 42 transitions, 202 flow [2025-01-10 00:55:00,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 42 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:55:00,234 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 100 flow [2025-01-10 00:55:00,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2025-01-10 00:55:00,234 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2025-01-10 00:55:00,235 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 100 flow [2025-01-10 00:55:00,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:55:00,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:55:00,235 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:55:00,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 00:55:00,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:00,439 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-10 00:55:00,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:55:00,440 INFO L85 PathProgramCache]: Analyzing trace with hash -897263629, now seen corresponding path program 2 times [2025-01-10 00:55:00,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:55:00,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004825587] [2025-01-10 00:55:00,440 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:55:00,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:55:00,459 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-10 00:55:00,466 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 00:55:00,466 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:55:00,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-10 00:55:00,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:55:00,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004825587] [2025-01-10 00:55:00,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004825587] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:55:00,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322281607] [2025-01-10 00:55:00,517 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:55:00,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:00,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:55:00,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:55:00,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 00:55:00,607 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-10 00:55:00,626 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 00:55:00,626 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:55:00,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:00,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:55:00,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:55:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-10 00:55:00,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:55:00,655 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-10 00:55:00,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322281607] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:55:00,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:55:00,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-10 00:55:00,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352661186] [2025-01-10 00:55:00,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:55:00,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 00:55:00,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:55:00,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 00:55:00,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:55:00,660 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2025-01-10 00:55:00,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 100 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2025-01-10 00:55:00,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:55:00,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2025-01-10 00:55:00,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:55:00,747 INFO L124 PetriNetUnfolderBase]: 113/308 cut-off events. [2025-01-10 00:55:00,747 INFO L125 PetriNetUnfolderBase]: For 451/451 co-relation queries the response was YES. [2025-01-10 00:55:00,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 308 events. 113/308 cut-off events. For 451/451 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1331 event pairs, 20 based on Foata normal form. 33/333 useless extension candidates. Maximal degree in co-relation 473. Up to 58 conditions per place. [2025-01-10 00:55:00,757 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 45 selfloop transitions, 6 changer transitions 0/58 dead transitions. [2025-01-10 00:55:00,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 58 transitions, 418 flow [2025-01-10 00:55:00,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:55:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 00:55:00,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2025-01-10 00:55:00,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2025-01-10 00:55:00,759 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 100 flow. Second operand 6 states and 93 transitions. [2025-01-10 00:55:00,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 58 transitions, 418 flow [2025-01-10 00:55:00,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 58 transitions, 378 flow, removed 15 selfloop flow, removed 1 redundant places. [2025-01-10 00:55:00,762 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 132 flow [2025-01-10 00:55:00,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, 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=132, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2025-01-10 00:55:00,762 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 15 predicate places. [2025-01-10 00:55:00,762 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 132 flow [2025-01-10 00:55:00,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2025-01-10 00:55:00,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:55:00,763 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:55:00,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 00:55:00,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:00,967 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-10 00:55:00,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:55:00,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1365952015, now seen corresponding path program 3 times [2025-01-10 00:55:00,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:55:00,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121958415] [2025-01-10 00:55:00,968 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 00:55:00,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:55:00,983 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 43 statements into 5 equivalence classes. [2025-01-10 00:55:01,002 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 43 of 43 statements. [2025-01-10 00:55:01,002 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-10 00:55:01,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 00:55:01,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:55:01,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121958415] [2025-01-10 00:55:01,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121958415] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:55:01,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127409589] [2025-01-10 00:55:01,154 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 00:55:01,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:01,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:55:01,156 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:55:01,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 00:55:01,251 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 43 statements into 5 equivalence classes. [2025-01-10 00:55:01,273 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 43 of 43 statements. [2025-01-10 00:55:01,273 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-10 00:55:01,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:01,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:55:01,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:55:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 00:55:01,326 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:55:01,386 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 00:55:01,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127409589] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:55:01,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:55:01,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-10 00:55:01,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500209053] [2025-01-10 00:55:01,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:55:01,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 00:55:01,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:55:01,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 00:55:01,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-10 00:55:01,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2025-01-10 00:55:01,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 132 flow. Second operand has 13 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 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) [2025-01-10 00:55:01,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:55:01,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2025-01-10 00:55:01,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:55:01,543 INFO L124 PetriNetUnfolderBase]: 169/516 cut-off events. [2025-01-10 00:55:01,544 INFO L125 PetriNetUnfolderBase]: For 1370/1398 co-relation queries the response was YES. [2025-01-10 00:55:01,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 516 events. 169/516 cut-off events. For 1370/1398 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2374 event pairs, 13 based on Foata normal form. 36/545 useless extension candidates. Maximal degree in co-relation 1008. Up to 165 conditions per place. [2025-01-10 00:55:01,547 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 81 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2025-01-10 00:55:01,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 101 transitions, 800 flow [2025-01-10 00:55:01,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 00:55:01,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-10 00:55:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2025-01-10 00:55:01,549 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2025-01-10 00:55:01,549 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 132 flow. Second operand 12 states and 186 transitions. [2025-01-10 00:55:01,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 101 transitions, 800 flow [2025-01-10 00:55:01,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 101 transitions, 712 flow, removed 33 selfloop flow, removed 1 redundant places. [2025-01-10 00:55:01,553 INFO L231 Difference]: Finished difference. Result has 57 places, 34 transitions, 220 flow [2025-01-10 00:55:01,553 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=220, PETRI_PLACES=57, PETRI_TRANSITIONS=34} [2025-01-10 00:55:01,553 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 32 predicate places. [2025-01-10 00:55:01,554 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 34 transitions, 220 flow [2025-01-10 00:55:01,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 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) [2025-01-10 00:55:01,554 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:55:01,554 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:55:01,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 00:55:01,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:01,755 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-10 00:55:01,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:55:01,755 INFO L85 PathProgramCache]: Analyzing trace with hash -534048407, now seen corresponding path program 4 times [2025-01-10 00:55:01,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:55:01,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435388188] [2025-01-10 00:55:01,756 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 00:55:01,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:55:01,776 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 73 statements into 2 equivalence classes. [2025-01-10 00:55:01,804 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 73 of 73 statements. [2025-01-10 00:55:01,804 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 00:55:01,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 284 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-10 00:55:02,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:55:02,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435388188] [2025-01-10 00:55:02,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435388188] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:55:02,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459776102] [2025-01-10 00:55:02,056 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 00:55:02,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:02,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:55:02,058 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:55:02,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 00:55:02,153 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 73 statements into 2 equivalence classes. [2025-01-10 00:55:02,175 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 73 of 73 statements. [2025-01-10 00:55:02,175 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 00:55:02,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:02,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 00:55:02,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:55:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 284 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-10 00:55:02,244 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:55:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 284 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-10 00:55:02,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459776102] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:55:02,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:55:02,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2025-01-10 00:55:02,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605636014] [2025-01-10 00:55:02,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:55:02,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-10 00:55:02,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:55:02,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-10 00:55:02,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2025-01-10 00:55:02,448 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2025-01-10 00:55:02,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 34 transitions, 220 flow. Second operand has 22 states, 22 states have (on average 13.227272727272727) internal successors, (291), 22 states have internal predecessors, (291), 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) [2025-01-10 00:55:02,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:55:02,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2025-01-10 00:55:02,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:55:02,629 INFO L124 PetriNetUnfolderBase]: 318/960 cut-off events. [2025-01-10 00:55:02,629 INFO L125 PetriNetUnfolderBase]: For 4259/4317 co-relation queries the response was YES. [2025-01-10 00:55:02,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3264 conditions, 960 events. 318/960 cut-off events. For 4259/4317 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 4593 event pairs, 10 based on Foata normal form. 60/1012 useless extension candidates. Maximal degree in co-relation 2067. Up to 315 conditions per place. [2025-01-10 00:55:02,640 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 151 selfloop transitions, 22 changer transitions 0/181 dead transitions. [2025-01-10 00:55:02,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 181 transitions, 1456 flow [2025-01-10 00:55:02,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-10 00:55:02,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-01-10 00:55:02,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 340 transitions. [2025-01-10 00:55:02,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5723905723905723 [2025-01-10 00:55:02,645 INFO L175 Difference]: Start difference. First operand has 57 places, 34 transitions, 220 flow. Second operand 22 states and 340 transitions. [2025-01-10 00:55:02,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 181 transitions, 1456 flow [2025-01-10 00:55:02,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 181 transitions, 1450 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 00:55:02,656 INFO L231 Difference]: Finished difference. Result has 86 places, 45 transitions, 414 flow [2025-01-10 00:55:02,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=414, PETRI_PLACES=86, PETRI_TRANSITIONS=45} [2025-01-10 00:55:02,657 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 61 predicate places. [2025-01-10 00:55:02,658 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 45 transitions, 414 flow [2025-01-10 00:55:02,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.227272727272727) internal successors, (291), 22 states have internal predecessors, (291), 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) [2025-01-10 00:55:02,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:55:02,659 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:55:02,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 00:55:02,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-10 00:55:02,861 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-10 00:55:02,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:55:02,862 INFO L85 PathProgramCache]: Analyzing trace with hash -444853511, now seen corresponding path program 5 times [2025-01-10 00:55:02,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:55:02,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262014295] [2025-01-10 00:55:02,862 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 00:55:02,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:55:02,881 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 123 statements into 21 equivalence classes. [2025-01-10 00:55:02,912 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) and asserted 123 of 123 statements. [2025-01-10 00:55:02,914 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2025-01-10 00:55:02,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-01-10 00:55:03,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:55:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262014295] [2025-01-10 00:55:03,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262014295] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:55:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621546969] [2025-01-10 00:55:03,034 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 00:55:03,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:03,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:55:03,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:55:03,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 00:55:03,132 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 123 statements into 21 equivalence classes. [2025-01-10 00:55:03,166 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) and asserted 123 of 123 statements. [2025-01-10 00:55:03,166 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2025-01-10 00:55:03,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:03,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:55:03,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:55:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-01-10 00:55:03,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:55:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-01-10 00:55:03,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621546969] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:55:03,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:55:03,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-01-10 00:55:03,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517719299] [2025-01-10 00:55:03,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:55:03,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 00:55:03,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:55:03,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 00:55:03,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2025-01-10 00:55:03,264 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2025-01-10 00:55:03,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 45 transitions, 414 flow. Second operand has 12 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 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) [2025-01-10 00:55:03,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:55:03,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2025-01-10 00:55:03,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:55:03,649 INFO L124 PetriNetUnfolderBase]: 971/2577 cut-off events. [2025-01-10 00:55:03,650 INFO L125 PetriNetUnfolderBase]: For 15128/15128 co-relation queries the response was YES. [2025-01-10 00:55:03,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9724 conditions, 2577 events. 971/2577 cut-off events. For 15128/15128 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 16114 event pairs, 64 based on Foata normal form. 258/2789 useless extension candidates. Maximal degree in co-relation 8309. Up to 516 conditions per place. [2025-01-10 00:55:03,672 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 269 selfloop transitions, 12 changer transitions 0/290 dead transitions. [2025-01-10 00:55:03,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 290 transitions, 4100 flow [2025-01-10 00:55:03,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 00:55:03,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-10 00:55:03,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2025-01-10 00:55:03,674 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2025-01-10 00:55:03,674 INFO L175 Difference]: Start difference. First operand has 86 places, 45 transitions, 414 flow. Second operand 12 states and 186 transitions. [2025-01-10 00:55:03,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 290 transitions, 4100 flow [2025-01-10 00:55:03,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 290 transitions, 3902 flow, removed 0 selfloop flow, removed 9 redundant places. [2025-01-10 00:55:03,699 INFO L231 Difference]: Finished difference. Result has 95 places, 52 transitions, 492 flow [2025-01-10 00:55:03,699 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=492, PETRI_PLACES=95, PETRI_TRANSITIONS=52} [2025-01-10 00:55:03,700 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 70 predicate places. [2025-01-10 00:55:03,701 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 52 transitions, 492 flow [2025-01-10 00:55:03,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 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) [2025-01-10 00:55:03,701 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:55:03,702 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:55:03,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 00:55:03,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:03,902 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-10 00:55:03,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:55:03,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1406046811, now seen corresponding path program 6 times [2025-01-10 00:55:03,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:55:03,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880130728] [2025-01-10 00:55:03,904 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 00:55:03,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:55:03,923 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 141 statements into 20 equivalence classes. [2025-01-10 00:55:04,008 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) and asserted 141 of 141 statements. [2025-01-10 00:55:04,008 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2025-01-10 00:55:04,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:04,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1228 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2025-01-10 00:55:04,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:55:04,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880130728] [2025-01-10 00:55:04,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880130728] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:55:04,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33394798] [2025-01-10 00:55:04,529 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 00:55:04,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:04,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:55:04,531 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:55:04,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 00:55:04,703 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 141 statements into 20 equivalence classes. [2025-01-10 00:55:04,767 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) and asserted 141 of 141 statements. [2025-01-10 00:55:04,767 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2025-01-10 00:55:04,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:04,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 00:55:04,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:55:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1228 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2025-01-10 00:55:04,937 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:55:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1228 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2025-01-10 00:55:05,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33394798] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:55:05,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:55:05,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2025-01-10 00:55:05,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016578173] [2025-01-10 00:55:05,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:55:05,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-10 00:55:05,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:55:05,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-10 00:55:05,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-01-10 00:55:05,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2025-01-10 00:55:05,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 52 transitions, 492 flow. Second operand has 23 states, 23 states have (on average 11.565217391304348) internal successors, (266), 23 states have internal predecessors, (266), 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) [2025-01-10 00:55:05,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:55:05,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2025-01-10 00:55:05,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:55:06,021 INFO L124 PetriNetUnfolderBase]: 1811/4695 cut-off events. [2025-01-10 00:55:06,021 INFO L125 PetriNetUnfolderBase]: For 44461/44461 co-relation queries the response was YES. [2025-01-10 00:55:06,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20534 conditions, 4695 events. 1811/4695 cut-off events. For 44461/44461 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 33842 event pairs, 64 based on Foata normal form. 430/5073 useless extension candidates. Maximal degree in co-relation 17664. Up to 946 conditions per place. [2025-01-10 00:55:06,057 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 509 selfloop transitions, 22 changer transitions 0/540 dead transitions. [2025-01-10 00:55:06,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 540 transitions, 7526 flow [2025-01-10 00:55:06,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-10 00:55:06,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-01-10 00:55:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 340 transitions. [2025-01-10 00:55:06,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5723905723905723 [2025-01-10 00:55:06,059 INFO L175 Difference]: Start difference. First operand has 95 places, 52 transitions, 492 flow. Second operand 22 states and 340 transitions. [2025-01-10 00:55:06,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 540 transitions, 7526 flow [2025-01-10 00:55:06,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 540 transitions, 7520 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 00:55:06,096 INFO L231 Difference]: Finished difference. Result has 124 places, 63 transitions, 686 flow [2025-01-10 00:55:06,096 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=686, PETRI_PLACES=124, PETRI_TRANSITIONS=63} [2025-01-10 00:55:06,097 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 99 predicate places. [2025-01-10 00:55:06,097 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 63 transitions, 686 flow [2025-01-10 00:55:06,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.565217391304348) internal successors, (266), 23 states have internal predecessors, (266), 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) [2025-01-10 00:55:06,097 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:55:06,097 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:55:06,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 00:55:06,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-10 00:55:06,298 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-10 00:55:06,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:55:06,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1425668187, now seen corresponding path program 7 times [2025-01-10 00:55:06,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:55:06,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049236591] [2025-01-10 00:55:06,299 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 00:55:06,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:55:06,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-01-10 00:55:06,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-01-10 00:55:06,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:55:06,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:08,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2025-01-10 00:55:08,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:55:08,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049236591] [2025-01-10 00:55:08,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049236591] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:55:08,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387427346] [2025-01-10 00:55:08,063 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 00:55:08,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:55:08,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:55:08,069 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:55:08,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 00:55:08,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-01-10 00:55:08,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-01-10 00:55:08,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:55:08,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:55:08,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-01-10 00:55:08,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:55:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2025-01-10 00:55:08,432 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:55:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2025-01-10 00:55:09,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387427346] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:55:09,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:55:09,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 85 [2025-01-10 00:55:09,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375608118] [2025-01-10 00:55:09,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:55:09,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2025-01-10 00:55:09,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:55:09,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2025-01-10 00:55:09,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1810, Invalid=5500, Unknown=0, NotChecked=0, Total=7310 [2025-01-10 00:55:09,961 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-01-10 00:55:09,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 63 transitions, 686 flow. Second operand has 86 states, 86 states have (on average 9.127906976744185) internal successors, (785), 86 states have internal predecessors, (785), 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) [2025-01-10 00:55:09,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:55:09,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-01-10 00:55:09,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand