./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-1.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-theta/unwind2-1.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 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:16:38,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:16:38,967 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 01:16:38,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:16:38,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:16:38,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:16:38,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:16:38,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:16:38,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:16:38,984 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:16:38,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:16:38,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:16:38,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:16:38,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:16:38,984 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:16:38,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:16:38,984 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:16:38,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:16:38,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:16:38,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:16:38,985 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:16:38,985 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:16:38,985 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:16:38,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:16:38,985 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:16:38,985 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:16:38,985 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:16:38,985 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:16:38,986 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:16:38,986 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:16:38,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:16:38,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:16:38,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:16:38,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:38,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:16:38,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:16:38,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:16:38,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:16:38,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:38,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:16:38,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:16:38,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 01:16:38,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 01:16:38,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:16:38,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:16:38,987 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:16:38,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:16:38,987 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 -> 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 [2025-01-10 01:16:39,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:16:39,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:16:39,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:16:39,206 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:16:39,206 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:16:39,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-1.i [2025-01-10 01:16:40,421 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b59fdf5dd/8c531cc014db47e4bca1a9aa2ca506ba/FLAGd1ab49a3b [2025-01-10 01:16:40,795 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:16:40,796 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-1.i [2025-01-10 01:16:40,813 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b59fdf5dd/8c531cc014db47e4bca1a9aa2ca506ba/FLAGd1ab49a3b [2025-01-10 01:16:40,840 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b59fdf5dd/8c531cc014db47e4bca1a9aa2ca506ba [2025-01-10 01:16:40,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:16:40,844 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:16:40,845 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:16:40,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:16:40,849 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:16:40,850 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:40" (1/1) ... [2025-01-10 01:16:40,850 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d441a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:40, skipping insertion in model container [2025-01-10 01:16:40,850 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:40" (1/1) ... [2025-01-10 01:16:40,870 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:16:41,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:16:41,120 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:16:41,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:16:41,174 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:16:41,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41 WrapperNode [2025-01-10 01:16:41,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:16:41,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:16:41,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:16:41,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:16:41,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41" (1/1) ... [2025-01-10 01:16:41,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41" (1/1) ... [2025-01-10 01:16:41,207 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 79 [2025-01-10 01:16:41,208 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:16:41,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:16:41,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:16:41,209 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:16:41,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41" (1/1) ... [2025-01-10 01:16:41,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41" (1/1) ... [2025-01-10 01:16:41,216 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41" (1/1) ... [2025-01-10 01:16:41,225 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 01:16:41,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41" (1/1) ... [2025-01-10 01:16:41,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41" (1/1) ... [2025-01-10 01:16:41,229 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41" (1/1) ... [2025-01-10 01:16:41,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41" (1/1) ... [2025-01-10 01:16:41,233 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41" (1/1) ... [2025-01-10 01:16:41,234 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41" (1/1) ... [2025-01-10 01:16:41,234 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41" (1/1) ... [2025-01-10 01:16:41,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:16:41,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:16:41,236 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:16:41,236 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:16:41,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41" (1/1) ... [2025-01-10 01:16:41,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:41,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:41,277 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 01:16:41,280 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 01:16:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:16:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-01-10 01:16:41,309 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-01-10 01:16:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-01-10 01:16:41,309 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-01-10 01:16:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 01:16:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:16:41,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:16:41,310 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 01:16:41,382 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:16:41,383 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:16:41,484 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:16:41,485 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:16:41,557 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:16:41,558 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 01:16:41,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:41 BoogieIcfgContainer [2025-01-10 01:16:41,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:16:41,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:16:41,561 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:16:41,565 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:16:41,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:16:40" (1/3) ... [2025-01-10 01:16:41,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1d191c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:41, skipping insertion in model container [2025-01-10 01:16:41,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:41" (2/3) ... [2025-01-10 01:16:41,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1d191c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:41, skipping insertion in model container [2025-01-10 01:16:41,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:41" (3/3) ... [2025-01-10 01:16:41,568 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-1.i [2025-01-10 01:16:41,584 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:16:41,585 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-1.i that has 3 procedures, 33 locations, 1 initial locations, 2 loop locations, and 3 error locations. [2025-01-10 01:16:41,586 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:16:41,636 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 01:16:41,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2025-01-10 01:16:41,688 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2025-01-10 01:16:41,690 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 01:16:41,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-01-10 01:16:41,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2025-01-10 01:16:41,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 82 flow [2025-01-10 01:16:41,700 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:16:41,710 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;@270cd790, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:16:41,711 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-01-10 01:16:41,720 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:16:41,720 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2025-01-10 01:16:41,720 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 01:16:41,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:41,721 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:41,721 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:41,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:41,725 INFO L85 PathProgramCache]: Analyzing trace with hash 608996359, now seen corresponding path program 1 times [2025-01-10 01:16:41,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:41,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179567885] [2025-01-10 01:16:41,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:41,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:41,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 01:16:41,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 01:16:41,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:41,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:41,963 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 01:16:41,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:41,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179567885] [2025-01-10 01:16:41,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179567885] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:41,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:41,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:16:41,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84522388] [2025-01-10 01:16:41,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:41,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:16:41,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:42,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:16:42,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:16:42,030 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-01-10 01:16:42,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 01:16:42,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:42,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-01-10 01:16:42,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:42,249 INFO L124 PetriNetUnfolderBase]: 287/602 cut-off events. [2025-01-10 01:16:42,249 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-01-10 01:16:42,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 602 events. 287/602 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3112 event pairs, 42 based on Foata normal form. 112/658 useless extension candidates. Maximal degree in co-relation 1048. Up to 215 conditions per place. [2025-01-10 01:16:42,255 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 58 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2025-01-10 01:16:42,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 74 transitions, 307 flow [2025-01-10 01:16:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:16:42,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 01:16:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2025-01-10 01:16:42,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2025-01-10 01:16:42,265 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 7 states and 152 transitions. [2025-01-10 01:16:42,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 74 transitions, 307 flow [2025-01-10 01:16:42,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 01:16:42,270 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 111 flow [2025-01-10 01:16:42,271 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2025-01-10 01:16:42,273 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2025-01-10 01:16:42,273 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 111 flow [2025-01-10 01:16:42,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 01:16:42,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:42,274 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:42,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 01:16:42,274 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:42,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:42,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1698032140, now seen corresponding path program 1 times [2025-01-10 01:16:42,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:42,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890710955] [2025-01-10 01:16:42,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:42,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:42,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 01:16:42,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 01:16:42,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:42,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:42,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:42,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890710955] [2025-01-10 01:16:42,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890710955] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:16:42,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418532276] [2025-01-10 01:16:42,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:42,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:42,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:42,419 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 01:16:42,421 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 01:16:42,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 01:16:42,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 01:16:42,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:42,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:42,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 01:16:42,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:42,498 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:16:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:42,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418532276] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:16:42,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:16:42,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2025-01-10 01:16:42,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200849513] [2025-01-10 01:16:42,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:16:42,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 01:16:42,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:42,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 01:16:42,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-10 01:16:42,544 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2025-01-10 01:16:42,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 111 flow. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 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 01:16:42,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:42,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2025-01-10 01:16:42,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:42,820 INFO L124 PetriNetUnfolderBase]: 513/1033 cut-off events. [2025-01-10 01:16:42,820 INFO L125 PetriNetUnfolderBase]: For 156/166 co-relation queries the response was YES. [2025-01-10 01:16:42,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 1033 events. 513/1033 cut-off events. For 156/166 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5878 event pairs, 81 based on Foata normal form. 10/884 useless extension candidates. Maximal degree in co-relation 853. Up to 332 conditions per place. [2025-01-10 01:16:42,830 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 73 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2025-01-10 01:16:42,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 98 transitions, 438 flow [2025-01-10 01:16:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 01:16:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 01:16:42,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2025-01-10 01:16:42,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327 [2025-01-10 01:16:42,834 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 111 flow. Second operand 9 states and 184 transitions. [2025-01-10 01:16:42,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 98 transitions, 438 flow [2025-01-10 01:16:42,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 98 transitions, 427 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-01-10 01:16:42,841 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 170 flow [2025-01-10 01:16:42,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2025-01-10 01:16:42,841 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2025-01-10 01:16:42,841 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 170 flow [2025-01-10 01:16:42,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 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 01:16:42,841 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:42,841 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:42,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 01:16:43,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:43,043 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:43,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:43,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1098402983, now seen corresponding path program 2 times [2025-01-10 01:16:43,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:43,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824511029] [2025-01-10 01:16:43,044 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:16:43,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:43,051 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-01-10 01:16:43,056 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 01:16:43,056 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:16:43,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:43,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824511029] [2025-01-10 01:16:43,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824511029] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:16:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631794559] [2025-01-10 01:16:43,161 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:16:43,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:43,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:43,163 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 01:16:43,165 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 01:16:43,203 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-01-10 01:16:43,210 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 01:16:43,210 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:16:43,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:43,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:16:43,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:43,267 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:16:43,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631794559] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:43,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 01:16:43,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2025-01-10 01:16:43,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577962286] [2025-01-10 01:16:43,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:43,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:16:43,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:43,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:16:43,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:16:43,277 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-01-10 01:16:43,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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 01:16:43,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:43,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-01-10 01:16:43,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:43,549 INFO L124 PetriNetUnfolderBase]: 403/865 cut-off events. [2025-01-10 01:16:43,549 INFO L125 PetriNetUnfolderBase]: For 558/568 co-relation queries the response was YES. [2025-01-10 01:16:43,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 865 events. 403/865 cut-off events. For 558/568 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4942 event pairs, 101 based on Foata normal form. 26/838 useless extension candidates. Maximal degree in co-relation 1319. Up to 362 conditions per place. [2025-01-10 01:16:43,554 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 77 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2025-01-10 01:16:43,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 99 transitions, 505 flow [2025-01-10 01:16:43,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 01:16:43,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 01:16:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2025-01-10 01:16:43,557 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2025-01-10 01:16:43,557 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 170 flow. Second operand 10 states and 185 transitions. [2025-01-10 01:16:43,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 99 transitions, 505 flow [2025-01-10 01:16:43,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 99 transitions, 485 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-01-10 01:16:43,564 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 214 flow [2025-01-10 01:16:43,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=214, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2025-01-10 01:16:43,565 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2025-01-10 01:16:43,566 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 214 flow [2025-01-10 01:16:43,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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 01:16:43,566 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:43,566 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:43,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 01:16:43,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:43,767 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:43,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:43,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1821672392, now seen corresponding path program 1 times [2025-01-10 01:16:43,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:43,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050127567] [2025-01-10 01:16:43,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:43,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:43,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 01:16:43,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 01:16:43,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:43,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:43,833 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 01:16:43,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:43,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050127567] [2025-01-10 01:16:43,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050127567] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:43,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:43,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:16:43,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954755839] [2025-01-10 01:16:43,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:43,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:16:43,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:43,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:16:43,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:16:43,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-01-10 01:16:43,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 01:16:43,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:43,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-01-10 01:16:43,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:44,010 INFO L124 PetriNetUnfolderBase]: 473/1010 cut-off events. [2025-01-10 01:16:44,010 INFO L125 PetriNetUnfolderBase]: For 986/1004 co-relation queries the response was YES. [2025-01-10 01:16:44,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2606 conditions, 1010 events. 473/1010 cut-off events. For 986/1004 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5901 event pairs, 154 based on Foata normal form. 0/953 useless extension candidates. Maximal degree in co-relation 1783. Up to 489 conditions per place. [2025-01-10 01:16:44,016 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 64 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2025-01-10 01:16:44,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 575 flow [2025-01-10 01:16:44,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:16:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 01:16:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2025-01-10 01:16:44,017 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2025-01-10 01:16:44,017 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 214 flow. Second operand 7 states and 132 transitions. [2025-01-10 01:16:44,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 575 flow [2025-01-10 01:16:44,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 86 transitions, 558 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-01-10 01:16:44,021 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 262 flow [2025-01-10 01:16:44,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2025-01-10 01:16:44,022 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2025-01-10 01:16:44,022 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 262 flow [2025-01-10 01:16:44,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 01:16:44,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:44,022 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:44,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 01:16:44,023 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:44,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:44,023 INFO L85 PathProgramCache]: Analyzing trace with hash -638255096, now seen corresponding path program 1 times [2025-01-10 01:16:44,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:44,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082660914] [2025-01-10 01:16:44,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:44,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:44,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 01:16:44,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 01:16:44,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:44,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:44,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:44,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082660914] [2025-01-10 01:16:44,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082660914] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:16:44,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542352128] [2025-01-10 01:16:44,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:44,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:44,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:44,132 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 01:16:44,133 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 01:16:44,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 01:16:44,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 01:16:44,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:44,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:44,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:16:44,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:44,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:16:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:44,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542352128] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:16:44,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:16:44,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-01-10 01:16:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849708974] [2025-01-10 01:16:44,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:16:44,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 01:16:44,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:44,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 01:16:44,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-01-10 01:16:44,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-01-10 01:16:44,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 262 flow. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 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 01:16:44,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:44,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-01-10 01:16:44,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:44,630 INFO L124 PetriNetUnfolderBase]: 543/1153 cut-off events. [2025-01-10 01:16:44,630 INFO L125 PetriNetUnfolderBase]: For 1395/1419 co-relation queries the response was YES. [2025-01-10 01:16:44,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3493 conditions, 1153 events. 543/1153 cut-off events. For 1395/1419 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6881 event pairs, 136 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2372. Up to 489 conditions per place. [2025-01-10 01:16:44,641 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 84 selfloop transitions, 15 changer transitions 0/109 dead transitions. [2025-01-10 01:16:44,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 109 transitions, 798 flow [2025-01-10 01:16:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 01:16:44,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 01:16:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2025-01-10 01:16:44,643 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2025-01-10 01:16:44,643 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 262 flow. Second operand 9 states and 169 transitions. [2025-01-10 01:16:44,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 109 transitions, 798 flow [2025-01-10 01:16:44,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 109 transitions, 782 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-01-10 01:16:44,651 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 312 flow [2025-01-10 01:16:44,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=312, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2025-01-10 01:16:44,653 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2025-01-10 01:16:44,653 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 312 flow [2025-01-10 01:16:44,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 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 01:16:44,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:44,654 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:44,663 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 01:16:44,858 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 01:16:44,859 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:44,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:44,859 INFO L85 PathProgramCache]: Analyzing trace with hash 649121998, now seen corresponding path program 1 times [2025-01-10 01:16:44,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:44,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747500672] [2025-01-10 01:16:44,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:44,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:44,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:16:44,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:16:44,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:44,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:44,928 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 01:16:44,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:44,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747500672] [2025-01-10 01:16:44,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747500672] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:44,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:44,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:16:44,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683644857] [2025-01-10 01:16:44,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:44,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:16:44,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:44,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:16:44,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:16:44,932 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-01-10 01:16:44,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 01:16:44,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:44,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-01-10 01:16:44,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:45,124 INFO L124 PetriNetUnfolderBase]: 473/997 cut-off events. [2025-01-10 01:16:45,124 INFO L125 PetriNetUnfolderBase]: For 1685/1707 co-relation queries the response was YES. [2025-01-10 01:16:45,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3390 conditions, 997 events. 473/997 cut-off events. For 1685/1707 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5546 event pairs, 150 based on Foata normal form. 14/963 useless extension candidates. Maximal degree in co-relation 2138. Up to 522 conditions per place. [2025-01-10 01:16:45,131 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 54 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2025-01-10 01:16:45,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 75 transitions, 576 flow [2025-01-10 01:16:45,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:16:45,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:16:45,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2025-01-10 01:16:45,132 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2025-01-10 01:16:45,132 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 312 flow. Second operand 6 states and 111 transitions. [2025-01-10 01:16:45,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 75 transitions, 576 flow [2025-01-10 01:16:45,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 527 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-01-10 01:16:45,139 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 293 flow [2025-01-10 01:16:45,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2025-01-10 01:16:45,139 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2025-01-10 01:16:45,139 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 293 flow [2025-01-10 01:16:45,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 01:16:45,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:45,140 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:45,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 01:16:45,140 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:45,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:45,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1496831311, now seen corresponding path program 1 times [2025-01-10 01:16:45,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:45,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943712514] [2025-01-10 01:16:45,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:45,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:45,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:16:45,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:16:45,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:45,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:45,198 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 01:16:45,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:45,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943712514] [2025-01-10 01:16:45,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943712514] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:45,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:45,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:16:45,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202274279] [2025-01-10 01:16:45,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:45,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:16:45,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:45,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:16:45,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:16:45,207 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-01-10 01:16:45,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 01:16:45,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:45,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-01-10 01:16:45,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:45,360 INFO L124 PetriNetUnfolderBase]: 487/1034 cut-off events. [2025-01-10 01:16:45,360 INFO L125 PetriNetUnfolderBase]: For 1802/1834 co-relation queries the response was YES. [2025-01-10 01:16:45,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3344 conditions, 1034 events. 487/1034 cut-off events. For 1802/1834 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5824 event pairs, 161 based on Foata normal form. 0/988 useless extension candidates. Maximal degree in co-relation 2151. Up to 546 conditions per place. [2025-01-10 01:16:45,365 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 59 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2025-01-10 01:16:45,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 582 flow [2025-01-10 01:16:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:16:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:16:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2025-01-10 01:16:45,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2025-01-10 01:16:45,366 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 293 flow. Second operand 6 states and 115 transitions. [2025-01-10 01:16:45,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 582 flow [2025-01-10 01:16:45,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 80 transitions, 553 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-01-10 01:16:45,371 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 310 flow [2025-01-10 01:16:45,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2025-01-10 01:16:45,371 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2025-01-10 01:16:45,371 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 310 flow [2025-01-10 01:16:45,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 01:16:45,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:45,372 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:45,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 01:16:45,372 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:45,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:45,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1687942712, now seen corresponding path program 2 times [2025-01-10 01:16:45,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:45,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435955563] [2025-01-10 01:16:45,373 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:16:45,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:45,376 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-10 01:16:45,379 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:16:45,379 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:16:45,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:45,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:45,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435955563] [2025-01-10 01:16:45,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435955563] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:16:45,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172339275] [2025-01-10 01:16:45,476 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:16:45,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:45,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:45,482 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 01:16:45,485 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 01:16:45,516 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-10 01:16:45,524 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:16:45,524 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:16:45,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:45,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 01:16:45,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:45,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:16:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:45,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172339275] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:16:45,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:16:45,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-01-10 01:16:45,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572848076] [2025-01-10 01:16:45,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:16:45,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-10 01:16:45,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:45,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-10 01:16:45,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2025-01-10 01:16:45,787 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-01-10 01:16:45,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 310 flow. Second operand has 18 states, 18 states have (on average 10.444444444444445) internal successors, (188), 18 states have internal predecessors, (188), 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 01:16:45,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:45,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-01-10 01:16:45,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:46,294 INFO L124 PetriNetUnfolderBase]: 787/1523 cut-off events. [2025-01-10 01:16:46,294 INFO L125 PetriNetUnfolderBase]: For 3024/3076 co-relation queries the response was YES. [2025-01-10 01:16:46,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5293 conditions, 1523 events. 787/1523 cut-off events. For 3024/3076 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8831 event pairs, 126 based on Foata normal form. 0/1389 useless extension candidates. Maximal degree in co-relation 4153. Up to 403 conditions per place. [2025-01-10 01:16:46,302 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 141 selfloop transitions, 28 changer transitions 0/177 dead transitions. [2025-01-10 01:16:46,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 177 transitions, 1394 flow [2025-01-10 01:16:46,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 01:16:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-01-10 01:16:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 271 transitions. [2025-01-10 01:16:46,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47543859649122805 [2025-01-10 01:16:46,303 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 310 flow. Second operand 15 states and 271 transitions. [2025-01-10 01:16:46,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 177 transitions, 1394 flow [2025-01-10 01:16:46,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 177 transitions, 1341 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-01-10 01:16:46,311 INFO L231 Difference]: Finished difference. Result has 86 places, 63 transitions, 472 flow [2025-01-10 01:16:46,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=472, PETRI_PLACES=86, PETRI_TRANSITIONS=63} [2025-01-10 01:16:46,312 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 50 predicate places. [2025-01-10 01:16:46,312 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 63 transitions, 472 flow [2025-01-10 01:16:46,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.444444444444445) internal successors, (188), 18 states have internal predecessors, (188), 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 01:16:46,312 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:46,312 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:46,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 01:16:46,513 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,SelfDestructingSolverStorable7 [2025-01-10 01:16:46,513 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:46,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:46,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1084150255, now seen corresponding path program 1 times [2025-01-10 01:16:46,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:46,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607863842] [2025-01-10 01:16:46,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:46,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:46,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 01:16:46,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 01:16:46,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:46,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:46,521 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 01:16:46,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 01:16:46,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 01:16:46,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:46,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:46,534 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 01:16:46,535 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 01:16:46,535 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2025-01-10 01:16:46,536 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2025-01-10 01:16:46,536 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-01-10 01:16:46,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2025-01-10 01:16:46,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2025-01-10 01:16:46,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2025-01-10 01:16:46,537 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2025-01-10 01:16:46,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-10 01:16:46,537 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2025-01-10 01:16:46,553 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-10 01:16:46,554 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 01:16:46,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:16:46 BasicIcfg [2025-01-10 01:16:46,557 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 01:16:46,557 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 01:16:46,557 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 01:16:46,558 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 01:16:46,558 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:41" (3/4) ... [2025-01-10 01:16:46,559 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 01:16:46,559 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 01:16:46,560 INFO L158 Benchmark]: Toolchain (without parser) took 5716.37ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 111.6MB in the beginning and 217.3MB in the end (delta: -105.7MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2025-01-10 01:16:46,560 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:46,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.56ms. Allocated memory is still 142.6MB. Free memory was 110.7MB in the beginning and 90.9MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 01:16:46,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.16ms. Allocated memory is still 142.6MB. Free memory was 90.9MB in the beginning and 89.8MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 01:16:46,561 INFO L158 Benchmark]: Boogie Preprocessor took 26.93ms. Allocated memory is still 142.6MB. Free memory was 89.8MB in the beginning and 88.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:46,561 INFO L158 Benchmark]: RCFGBuilder took 322.48ms. Allocated memory is still 142.6MB. Free memory was 88.0MB in the beginning and 67.6MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 01:16:46,561 INFO L158 Benchmark]: TraceAbstraction took 4996.32ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 66.7MB in the beginning and 217.4MB in the end (delta: -150.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:46,561 INFO L158 Benchmark]: Witness Printer took 2.19ms. Allocated memory is still 285.2MB. Free memory was 217.4MB in the beginning and 217.3MB in the end (delta: 83.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:46,562 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 331.56ms. Allocated memory is still 142.6MB. Free memory was 110.7MB in the beginning and 90.9MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.16ms. Allocated memory is still 142.6MB. Free memory was 90.9MB in the beginning and 89.8MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.93ms. Allocated memory is still 142.6MB. Free memory was 89.8MB in the beginning and 88.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 322.48ms. Allocated memory is still 142.6MB. Free memory was 88.0MB in the beginning and 67.6MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4996.32ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 66.7MB in the beginning and 217.4MB in the end (delta: -150.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.19ms. Allocated memory is still 285.2MB. Free memory was 217.4MB in the beginning and 217.3MB in the end (delta: 83.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L775] 0 _N = 1 [L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L777] 0 pthread_t t1, t2; [L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=1, limit=0, t1=-2] [L757] 1 int i, bound; [L758] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=0] [L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=1, limit=0, t1=-2, t2=-1] [L766] 2 int i, bound; [L767] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=0] [L768] 2 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=2] [L759] 1 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=1] [L769] 2 bound = limit [L770] 2 i = 0 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=0, lim=2, limit=1] [L770] COND TRUE 2 i < bound [L770] 2 i++ VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=1, lim=2, limit=1] [L770] COND FALSE 2 !(i < bound) [L771] CALL 2 __VERIFIER_assert(i == lim) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [_N=1, limit=1] [L752] 2 __assert_fail ("0", "generated/unwind2.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=1, limit=1] - UnprovableResult [Line: 774]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 779]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 919 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 904 mSDsluCounter, 223 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 187 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1752 IncrementalHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 36 mSDtfsCounter, 1752 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 54 SyntacticMatches, 8 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=472occurred in iteration=8, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 570 SizeOfPredicates, 18 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 5/21 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-10 01:16:46,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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-theta/unwind2-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:16:48,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:16:49,118 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-10 01:16:49,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:16:49,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:16:49,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:16:49,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:16:49,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:16:49,137 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:16:49,137 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:16:49,138 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:16:49,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:16:49,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:16:49,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:16:49,138 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:16:49,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:16:49,138 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:16:49,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:16:49,138 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:16:49,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:16:49,138 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:16:49,138 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:16:49,138 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:16:49,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:16:49,138 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:16:49,139 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 01:16:49,139 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 01:16:49,139 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:16:49,139 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:16:49,139 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:16:49,139 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:16:49,139 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:16:49,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:16:49,139 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:16:49,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:16:49,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:49,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:16:49,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:16:49,139 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:16:49,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:16:49,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:49,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:16:49,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:16:49,140 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 01:16:49,140 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 01:16:49,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:16:49,140 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:16:49,140 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:16:49,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:16:49,140 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 -> 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 [2025-01-10 01:16:49,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:16:49,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:16:49,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:16:49,372 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:16:49,372 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:16:49,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-1.i [2025-01-10 01:16:50,711 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/748eeef72/973ee29926234952b15505caa733723f/FLAG363f95039 [2025-01-10 01:16:50,958 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:16:50,959 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-1.i [2025-01-10 01:16:50,971 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/748eeef72/973ee29926234952b15505caa733723f/FLAG363f95039 [2025-01-10 01:16:50,982 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/748eeef72/973ee29926234952b15505caa733723f [2025-01-10 01:16:50,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:16:50,988 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:16:50,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:16:50,993 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:16:50,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:16:50,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:50" (1/1) ... [2025-01-10 01:16:50,998 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e1bb063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:50, skipping insertion in model container [2025-01-10 01:16:50,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:50" (1/1) ... [2025-01-10 01:16:51,016 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:16:51,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:16:51,306 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:16:51,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:16:51,381 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:16:51,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51 WrapperNode [2025-01-10 01:16:51,381 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:16:51,382 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:16:51,382 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:16:51,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:16:51,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,414 INFO L138 Inliner]: procedures = 170, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 80 [2025-01-10 01:16:51,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:16:51,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:16:51,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:16:51,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:16:51,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,426 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,439 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 01:16:51,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,444 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,450 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,452 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:16:51,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:16:51,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:16:51,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:16:51,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:51,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:51,491 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 01:16:51,496 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 01:16:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:16:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-01-10 01:16:51,518 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-01-10 01:16:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-01-10 01:16:51,518 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-01-10 01:16:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 01:16:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:16:51,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:16:51,519 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 01:16:51,671 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:16:51,672 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:16:51,818 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:16:51,818 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:16:51,934 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:16:51,934 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 01:16:51,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:51 BoogieIcfgContainer [2025-01-10 01:16:51,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:16:51,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:16:51,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:16:51,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:16:51,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:16:50" (1/3) ... [2025-01-10 01:16:51,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed4b053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:51, skipping insertion in model container [2025-01-10 01:16:51,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51" (2/3) ... [2025-01-10 01:16:51,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed4b053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:51, skipping insertion in model container [2025-01-10 01:16:51,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:51" (3/3) ... [2025-01-10 01:16:51,946 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-1.i [2025-01-10 01:16:51,957 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:16:51,962 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-1.i that has 3 procedures, 33 locations, 1 initial locations, 2 loop locations, and 3 error locations. [2025-01-10 01:16:51,962 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:16:52,036 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 01:16:52,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2025-01-10 01:16:52,074 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2025-01-10 01:16:52,075 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 01:16:52,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-01-10 01:16:52,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2025-01-10 01:16:52,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 82 flow [2025-01-10 01:16:52,087 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:16:52,097 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;@1be8e722, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:16:52,097 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-01-10 01:16:52,102 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:16:52,102 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2025-01-10 01:16:52,102 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 01:16:52,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:52,103 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:52,103 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:52,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:52,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1981084919, now seen corresponding path program 1 times [2025-01-10 01:16:52,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:52,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756702246] [2025-01-10 01:16:52,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:52,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:52,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:52,119 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 01:16:52,120 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 01:16:52,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 01:16:52,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 01:16:52,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:52,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:52,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:16:52,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:52,262 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 01:16:52,263 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:16:52,263 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 01:16:52,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756702246] [2025-01-10 01:16:52,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756702246] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:52,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:52,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:16:52,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086631058] [2025-01-10 01:16:52,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:52,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:16:52,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 01:16:52,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:16:52,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:16:52,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-01-10 01:16:52,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 01:16:52,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:52,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-01-10 01:16:52,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:52,580 INFO L124 PetriNetUnfolderBase]: 287/602 cut-off events. [2025-01-10 01:16:52,580 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-01-10 01:16:52,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 602 events. 287/602 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3106 event pairs, 42 based on Foata normal form. 112/658 useless extension candidates. Maximal degree in co-relation 1048. Up to 215 conditions per place. [2025-01-10 01:16:52,586 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 58 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2025-01-10 01:16:52,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 74 transitions, 307 flow [2025-01-10 01:16:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:16:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 01:16:52,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2025-01-10 01:16:52,595 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2025-01-10 01:16:52,596 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 7 states and 152 transitions. [2025-01-10 01:16:52,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 74 transitions, 307 flow [2025-01-10 01:16:52,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 01:16:52,601 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 111 flow [2025-01-10 01:16:52,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2025-01-10 01:16:52,605 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2025-01-10 01:16:52,605 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 111 flow [2025-01-10 01:16:52,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 01:16:52,605 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:52,605 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:52,613 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 01:16:52,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:52,809 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:52,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:52,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1285076148, now seen corresponding path program 1 times [2025-01-10 01:16:52,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:52,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971597597] [2025-01-10 01:16:52,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:52,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:52,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:52,817 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 01:16:52,818 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 01:16:52,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 01:16:52,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 01:16:52,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:52,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:52,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 01:16:52,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:52,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:16:53,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:53,072 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 01:16:53,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971597597] [2025-01-10 01:16:53,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971597597] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:16:53,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:16:53,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2025-01-10 01:16:53,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087767671] [2025-01-10 01:16:53,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 01:16:53,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-10 01:16:53,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 01:16:53,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-10 01:16:53,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-01-10 01:16:53,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-01-10 01:16:53,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 111 flow. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 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 01:16:53,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:53,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-01-10 01:16:53,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:53,720 INFO L124 PetriNetUnfolderBase]: 486/948 cut-off events. [2025-01-10 01:16:53,720 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2025-01-10 01:16:53,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2143 conditions, 948 events. 486/948 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5071 event pairs, 42 based on Foata normal form. 0/837 useless extension candidates. Maximal degree in co-relation 801. Up to 177 conditions per place. [2025-01-10 01:16:53,730 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 123 selfloop transitions, 23 changer transitions 0/153 dead transitions. [2025-01-10 01:16:53,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 153 transitions, 688 flow [2025-01-10 01:16:53,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 01:16:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-10 01:16:53,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 295 transitions. [2025-01-10 01:16:53,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48519736842105265 [2025-01-10 01:16:53,736 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 111 flow. Second operand 16 states and 295 transitions. [2025-01-10 01:16:53,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 153 transitions, 688 flow [2025-01-10 01:16:53,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 153 transitions, 675 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-01-10 01:16:53,742 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 237 flow [2025-01-10 01:16:53,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=237, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2025-01-10 01:16:53,743 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2025-01-10 01:16:53,743 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 237 flow [2025-01-10 01:16:53,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 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 01:16:53,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:53,744 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:53,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 01:16:53,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:53,949 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:53,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:53,950 INFO L85 PathProgramCache]: Analyzing trace with hash 191251194, now seen corresponding path program 1 times [2025-01-10 01:16:53,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:53,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396524388] [2025-01-10 01:16:53,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:53,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:53,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:53,953 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 01:16:53,954 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 01:16:54,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 01:16:54,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 01:16:54,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:54,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:54,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:16:54,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:54,043 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 01:16:54,043 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:16:54,043 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 01:16:54,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396524388] [2025-01-10 01:16:54,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396524388] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:54,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:54,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:16:54,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665768484] [2025-01-10 01:16:54,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:54,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:16:54,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 01:16:54,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:16:54,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:16:54,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-01-10 01:16:54,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 01:16:54,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:54,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-01-10 01:16:54,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:54,222 INFO L124 PetriNetUnfolderBase]: 473/1010 cut-off events. [2025-01-10 01:16:54,223 INFO L125 PetriNetUnfolderBase]: For 835/835 co-relation queries the response was YES. [2025-01-10 01:16:54,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1010 events. 473/1010 cut-off events. For 835/835 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5925 event pairs, 154 based on Foata normal form. 0/929 useless extension candidates. Maximal degree in co-relation 2274. Up to 489 conditions per place. [2025-01-10 01:16:54,227 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 70 selfloop transitions, 12 changer transitions 0/92 dead transitions. [2025-01-10 01:16:54,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 92 transitions, 630 flow [2025-01-10 01:16:54,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:16:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 01:16:54,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2025-01-10 01:16:54,228 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2025-01-10 01:16:54,228 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 237 flow. Second operand 7 states and 132 transitions. [2025-01-10 01:16:54,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 92 transitions, 630 flow [2025-01-10 01:16:54,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 92 transitions, 538 flow, removed 30 selfloop flow, removed 6 redundant places. [2025-01-10 01:16:54,234 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 262 flow [2025-01-10 01:16:54,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2025-01-10 01:16:54,234 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2025-01-10 01:16:54,234 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 262 flow [2025-01-10 01:16:54,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 01:16:54,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:54,235 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:54,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 01:16:54,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:54,439 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:54,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:54,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1632833928, now seen corresponding path program 1 times [2025-01-10 01:16:54,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:54,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267960468] [2025-01-10 01:16:54,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:54,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:54,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:54,442 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 01:16:54,443 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 01:16:54,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 01:16:54,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 01:16:54,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:54,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:54,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:16:54,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:54,542 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:16:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:54,628 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 01:16:54,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267960468] [2025-01-10 01:16:54,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267960468] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:16:54,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:16:54,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2025-01-10 01:16:54,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748349418] [2025-01-10 01:16:54,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 01:16:54,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 01:16:54,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 01:16:54,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 01:16:54,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:16:54,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-01-10 01:16:54,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 262 flow. Second operand has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 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 01:16:54,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:54,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-01-10 01:16:54,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:55,086 INFO L124 PetriNetUnfolderBase]: 734/1450 cut-off events. [2025-01-10 01:16:55,086 INFO L125 PetriNetUnfolderBase]: For 1247/1247 co-relation queries the response was YES. [2025-01-10 01:16:55,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4352 conditions, 1450 events. 734/1450 cut-off events. For 1247/1247 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8677 event pairs, 28 based on Foata normal form. 0/1312 useless extension candidates. Maximal degree in co-relation 3717. Up to 420 conditions per place. [2025-01-10 01:16:55,091 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 141 selfloop transitions, 26 changer transitions 0/177 dead transitions. [2025-01-10 01:16:55,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 177 transitions, 1183 flow [2025-01-10 01:16:55,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 01:16:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-01-10 01:16:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 273 transitions. [2025-01-10 01:16:55,095 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2025-01-10 01:16:55,095 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 262 flow. Second operand 15 states and 273 transitions. [2025-01-10 01:16:55,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 177 transitions, 1183 flow [2025-01-10 01:16:55,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 177 transitions, 1163 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-01-10 01:16:55,102 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 435 flow [2025-01-10 01:16:55,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=435, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2025-01-10 01:16:55,103 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2025-01-10 01:16:55,103 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 435 flow [2025-01-10 01:16:55,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 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 01:16:55,103 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:55,103 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:55,112 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 01:16:55,303 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 [2025-01-10 01:16:55,304 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:55,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:55,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1821271330, now seen corresponding path program 1 times [2025-01-10 01:16:55,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:55,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [52295393] [2025-01-10 01:16:55,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:55,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:55,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:55,311 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 01:16:55,312 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 01:16:55,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:16:55,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:16:55,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:55,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:55,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:16:55,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:55,391 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 01:16:55,393 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:16:55,393 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 01:16:55,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52295393] [2025-01-10 01:16:55,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52295393] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:55,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:55,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:16:55,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846751012] [2025-01-10 01:16:55,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:55,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:16:55,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 01:16:55,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:16:55,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:16:55,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-01-10 01:16:55,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 01:16:55,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:55,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-01-10 01:16:55,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:55,588 INFO L124 PetriNetUnfolderBase]: 637/1267 cut-off events. [2025-01-10 01:16:55,588 INFO L125 PetriNetUnfolderBase]: For 3024/3024 co-relation queries the response was YES. [2025-01-10 01:16:55,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4565 conditions, 1267 events. 637/1267 cut-off events. For 3024/3024 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7164 event pairs, 182 based on Foata normal form. 0/1201 useless extension candidates. Maximal degree in co-relation 4028. Up to 697 conditions per place. [2025-01-10 01:16:55,594 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 65 selfloop transitions, 15 changer transitions 0/89 dead transitions. [2025-01-10 01:16:55,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 729 flow [2025-01-10 01:16:55,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:16:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:16:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2025-01-10 01:16:55,595 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2025-01-10 01:16:55,595 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 435 flow. Second operand 6 states and 111 transitions. [2025-01-10 01:16:55,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 729 flow [2025-01-10 01:16:55,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 89 transitions, 630 flow, removed 38 selfloop flow, removed 5 redundant places. [2025-01-10 01:16:55,605 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 376 flow [2025-01-10 01:16:55,605 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2025-01-10 01:16:55,606 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2025-01-10 01:16:55,606 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 376 flow [2025-01-10 01:16:55,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 01:16:55,606 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:55,606 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:55,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-10 01:16:55,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:55,807 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:55,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:55,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1787889553, now seen corresponding path program 1 times [2025-01-10 01:16:55,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:55,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357376187] [2025-01-10 01:16:55,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:55,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:55,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:55,810 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 01:16:55,811 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 01:16:55,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:16:55,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:16:55,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:55,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:55,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:16:55,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:55,890 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:16:55,891 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 01:16:55,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357376187] [2025-01-10 01:16:55,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357376187] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:55,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:55,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:16:55,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077266699] [2025-01-10 01:16:55,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:55,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:16:55,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 01:16:55,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:16:55,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:16:55,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-01-10 01:16:55,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 01:16:55,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:55,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-01-10 01:16:55,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:56,064 INFO L124 PetriNetUnfolderBase]: 651/1296 cut-off events. [2025-01-10 01:16:56,064 INFO L125 PetriNetUnfolderBase]: For 2816/2816 co-relation queries the response was YES. [2025-01-10 01:16:56,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4103 conditions, 1296 events. 651/1296 cut-off events. For 2816/2816 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7430 event pairs, 199 based on Foata normal form. 0/1230 useless extension candidates. Maximal degree in co-relation 3615. Up to 725 conditions per place. [2025-01-10 01:16:56,069 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 70 selfloop transitions, 15 changer transitions 0/94 dead transitions. [2025-01-10 01:16:56,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 94 transitions, 690 flow [2025-01-10 01:16:56,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:16:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:16:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2025-01-10 01:16:56,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2025-01-10 01:16:56,070 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 376 flow. Second operand 6 states and 115 transitions. [2025-01-10 01:16:56,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 94 transitions, 690 flow [2025-01-10 01:16:56,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 644 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-01-10 01:16:56,077 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 377 flow [2025-01-10 01:16:56,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=377, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2025-01-10 01:16:56,078 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2025-01-10 01:16:56,078 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 377 flow [2025-01-10 01:16:56,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 01:16:56,078 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:56,078 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:56,085 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 01:16:56,279 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 [2025-01-10 01:16:56,279 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:56,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:56,279 INFO L85 PathProgramCache]: Analyzing trace with hash -922741574, now seen corresponding path program 2 times [2025-01-10 01:16:56,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:56,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506355554] [2025-01-10 01:16:56,280 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:16:56,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:56,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:56,285 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 01:16:56,286 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 01:16:56,329 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-10 01:16:56,339 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:16:56,339 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:16:56,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:56,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 01:16:56,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:56,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:16:56,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:56,496 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 01:16:56,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506355554] [2025-01-10 01:16:56,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506355554] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:16:56,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:16:56,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2025-01-10 01:16:56,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164998091] [2025-01-10 01:16:56,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 01:16:56,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 01:16:56,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 01:16:56,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 01:16:56,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:16:56,536 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2025-01-10 01:16:56,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 377 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 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 01:16:56,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:56,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2025-01-10 01:16:56,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:56,976 INFO L124 PetriNetUnfolderBase]: 916/1782 cut-off events. [2025-01-10 01:16:56,976 INFO L125 PetriNetUnfolderBase]: For 2880/2896 co-relation queries the response was YES. [2025-01-10 01:16:56,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5280 conditions, 1782 events. 916/1782 cut-off events. For 2880/2896 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10811 event pairs, 150 based on Foata normal form. 6/1638 useless extension candidates. Maximal degree in co-relation 4679. Up to 648 conditions per place. [2025-01-10 01:16:56,984 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 143 selfloop transitions, 21 changer transitions 0/184 dead transitions. [2025-01-10 01:16:56,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 184 transitions, 1215 flow [2025-01-10 01:16:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 01:16:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 01:16:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2025-01-10 01:16:56,986 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2025-01-10 01:16:56,986 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 377 flow. Second operand 10 states and 196 transitions. [2025-01-10 01:16:56,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 184 transitions, 1215 flow [2025-01-10 01:16:56,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 184 transitions, 1171 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-01-10 01:16:56,995 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 434 flow [2025-01-10 01:16:56,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=434, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2025-01-10 01:16:56,996 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2025-01-10 01:16:56,996 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 434 flow [2025-01-10 01:16:56,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 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 01:16:56,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:56,997 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:57,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 01:16:57,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:57,201 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-10 01:16:57,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1515049583, now seen corresponding path program 1 times [2025-01-10 01:16:57,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:57,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533448776] [2025-01-10 01:16:57,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:57,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:57,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:57,205 INFO L229 MonitoredProcess]: Starting monitored process 9 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 01:16:57,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 01:16:57,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 01:16:57,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 01:16:57,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:57,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:57,256 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 01:16:57,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 01:16:57,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 01:16:57,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:57,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:57,298 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-10 01:16:57,298 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 01:16:57,300 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2025-01-10 01:16:57,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2025-01-10 01:16:57,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-01-10 01:16:57,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2025-01-10 01:16:57,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2025-01-10 01:16:57,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2025-01-10 01:16:57,303 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2025-01-10 01:16:57,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 01:16:57,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:57,504 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:57,532 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-10 01:16:57,532 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 01:16:57,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:16:57 BasicIcfg [2025-01-10 01:16:57,539 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 01:16:57,540 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 01:16:57,540 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 01:16:57,540 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 01:16:57,540 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:51" (3/4) ... [2025-01-10 01:16:57,542 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 01:16:57,543 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 01:16:57,544 INFO L158 Benchmark]: Toolchain (without parser) took 6555.64ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 91.2MB in the beginning and 63.9MB in the end (delta: 27.3MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. [2025-01-10 01:16:57,544 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory was 62.5MB in the beginning and 62.4MB in the end (delta: 37.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:57,544 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.28ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 70.4MB in the end (delta: 20.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 01:16:57,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.23ms. Allocated memory is still 117.4MB. Free memory was 70.4MB in the beginning and 68.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:57,545 INFO L158 Benchmark]: Boogie Preprocessor took 38.18ms. Allocated memory is still 117.4MB. Free memory was 68.6MB in the beginning and 66.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:57,545 INFO L158 Benchmark]: RCFGBuilder took 480.66ms. Allocated memory is still 117.4MB. Free memory was 66.8MB in the beginning and 41.7MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 01:16:57,546 INFO L158 Benchmark]: TraceAbstraction took 5602.24ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 41.3MB in the beginning and 63.9MB in the end (delta: -22.6MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2025-01-10 01:16:57,546 INFO L158 Benchmark]: Witness Printer took 3.30ms. Allocated memory is still 142.6MB. Free memory was 63.9MB in the beginning and 63.9MB in the end (delta: 12.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:57,547 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory was 62.5MB in the beginning and 62.4MB in the end (delta: 37.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.28ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 70.4MB in the end (delta: 20.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.23ms. Allocated memory is still 117.4MB. Free memory was 70.4MB in the beginning and 68.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.18ms. Allocated memory is still 117.4MB. Free memory was 68.6MB in the beginning and 66.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 480.66ms. Allocated memory is still 117.4MB. Free memory was 66.8MB in the beginning and 41.7MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 5602.24ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 41.3MB in the beginning and 63.9MB in the end (delta: -22.6MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. * Witness Printer took 3.30ms. Allocated memory is still 142.6MB. Free memory was 63.9MB in the beginning and 63.9MB in the end (delta: 12.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L775] 0 _N = 1 [L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L777] 0 pthread_t t1, t2; [L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=1, limit=0, t1=-1] [L757] 1 int i, bound; [L758] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=0] [L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=1, limit=0, t1=-1, t2=0] [L766] 2 int i, bound; [L767] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=0] [L768] 2 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=2] [L759] 1 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=1] [L769] 2 bound = limit [L770] 2 i = 0 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=0, lim=2, limit=1] [L770] COND TRUE 2 i < bound [L770] 2 i++ VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=1, lim=2, limit=1] [L770] COND FALSE 2 !(i < bound) [L771] CALL 2 __VERIFIER_assert(i == lim) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [_N=1, limit=1] [L752] 2 __assert_fail ("0", "generated/unwind2.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=1, limit=1] - UnprovableResult [Line: 774]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 779]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.5s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 986 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 974 mSDsluCounter, 145 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 115 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1665 IncrementalHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 30 mSDtfsCounter, 1665 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=435occurred in iteration=4, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 429 SizeOfPredicates, 27 NumberOfNonLiveVariables, 294 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 0/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-10 01:16:57,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample