./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/unwind1-nondet.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/unwind1-nondet.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 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:16:37,168 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:16:37,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 01:16:37,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:16:37,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:16:37,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:16:37,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:16:37,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:16:37,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:16:37,252 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:16:37,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:16:37,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:16:37,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:16:37,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:16:37,252 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:16:37,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:16:37,252 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:16:37,252 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:16:37,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:16:37,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:16:37,253 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:16:37,253 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:16:37,253 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:16:37,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:16:37,253 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:16:37,253 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:16:37,253 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:16:37,253 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:16:37,253 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:16:37,253 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:16:37,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:16:37,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:16:37,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:16:37,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:37,256 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:16:37,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:16:37,256 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:16:37,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:16:37,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:37,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:16:37,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:16:37,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 01:16:37,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 01:16:37,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:16:37,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:16:37,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:16:37,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:16:37,257 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 -> 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 [2025-01-10 01:16:37,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:16:37,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:16:37,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:16:37,540 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:16:37,541 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:16:37,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2025-01-10 01:16:38,793 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57e4b2962/558fa6ae719147a6bde7300f7cb85449/FLAG8dc89b496 [2025-01-10 01:16:39,158 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:16:39,160 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2025-01-10 01:16:39,174 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57e4b2962/558fa6ae719147a6bde7300f7cb85449/FLAG8dc89b496 [2025-01-10 01:16:39,358 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57e4b2962/558fa6ae719147a6bde7300f7cb85449 [2025-01-10 01:16:39,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:16:39,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:16:39,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:16:39,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:16:39,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:16:39,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20278eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39, skipping insertion in model container [2025-01-10 01:16:39,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,389 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:16:39,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:16:39,640 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:16:39,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:16:39,708 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:16:39,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39 WrapperNode [2025-01-10 01:16:39,710 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:16:39,711 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:16:39,711 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:16:39,711 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:16:39,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,743 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2025-01-10 01:16:39,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:16:39,743 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:16:39,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:16:39,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:16:39,750 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,753 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,766 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 01:16:39,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,771 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,774 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,776 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:16:39,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:16:39,779 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:16:39,779 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:16:39,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39" (1/1) ... [2025-01-10 01:16:39,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:39,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:39,814 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 01:16:39,819 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 01:16:39,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:16:39,837 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-01-10 01:16:39,837 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-01-10 01:16:39,837 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-01-10 01:16:39,837 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-01-10 01:16:39,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 01:16:39,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:16:39,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:16:39,839 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 01:16:39,930 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:16:39,933 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:16:40,038 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:16:40,038 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:16:40,127 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:16:40,128 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 01:16:40,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:40 BoogieIcfgContainer [2025-01-10 01:16:40,129 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:16:40,130 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:16:40,130 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:16:40,135 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:16:40,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:16:39" (1/3) ... [2025-01-10 01:16:40,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db2adb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:40, skipping insertion in model container [2025-01-10 01:16:40,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:39" (2/3) ... [2025-01-10 01:16:40,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db2adb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:40, skipping insertion in model container [2025-01-10 01:16:40,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:40" (3/3) ... [2025-01-10 01:16:40,140 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind1-nondet.i [2025-01-10 01:16:40,154 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:16:40,156 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind1-nondet.i that has 3 procedures, 26 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-01-10 01:16:40,156 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:16:40,196 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 01:16:40,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2025-01-10 01:16:40,247 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-01-10 01:16:40,253 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 01:16:40,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2025-01-10 01:16:40,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2025-01-10 01:16:40,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2025-01-10 01:16:40,271 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:16:40,283 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;@62443a50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:16:40,283 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-01-10 01:16:40,291 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:16:40,292 INFO L124 PetriNetUnfolderBase]: 4/21 cut-off events. [2025-01-10 01:16:40,292 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 01:16:40,292 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:40,292 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:40,293 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:16:40,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:40,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1059579432, now seen corresponding path program 1 times [2025-01-10 01:16:40,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:40,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984839137] [2025-01-10 01:16:40,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:40,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:40,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 01:16:40,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 01:16:40,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:40,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:40,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:40,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984839137] [2025-01-10 01:16:40,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984839137] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:40,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:40,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 01:16:40,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387014429] [2025-01-10 01:16:40,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:40,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 01:16:40,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:40,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 01:16:40,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 01:16:40,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-01-10 01:16:40,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 01:16:40,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:40,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-01-10 01:16:40,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:40,793 INFO L124 PetriNetUnfolderBase]: 152/302 cut-off events. [2025-01-10 01:16:40,794 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2025-01-10 01:16:40,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 302 events. 152/302 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1232 event pairs, 68 based on Foata normal form. 22/268 useless extension candidates. Maximal degree in co-relation 532. Up to 146 conditions per place. [2025-01-10 01:16:40,799 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 33 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2025-01-10 01:16:40,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 46 transitions, 196 flow [2025-01-10 01:16:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:16:40,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:16:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2025-01-10 01:16:40,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5229885057471264 [2025-01-10 01:16:40,813 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 6 states and 91 transitions. [2025-01-10 01:16:40,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 46 transitions, 196 flow [2025-01-10 01:16:40,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 180 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 01:16:40,821 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 91 flow [2025-01-10 01:16:40,823 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2025-01-10 01:16:40,825 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2025-01-10 01:16:40,827 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 91 flow [2025-01-10 01:16:40,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 01:16:40,827 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:40,827 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:40,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 01:16:40,828 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:16:40,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1511790133, now seen corresponding path program 1 times [2025-01-10 01:16:40,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:40,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524885644] [2025-01-10 01:16:40,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:40,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:40,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 01:16:40,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 01:16:40,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:40,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:40,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:40,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524885644] [2025-01-10 01:16:40,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524885644] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:40,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:40,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:16:40,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263255675] [2025-01-10 01:16:40,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:40,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:16:40,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:40,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:16:40,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:16:40,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-01-10 01:16:40,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:40,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:40,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-01-10 01:16:40,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:40,969 INFO L124 PetriNetUnfolderBase]: 111/247 cut-off events. [2025-01-10 01:16:40,970 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2025-01-10 01:16:40,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 247 events. 111/247 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 939 event pairs, 30 based on Foata normal form. 13/245 useless extension candidates. Maximal degree in co-relation 312. Up to 97 conditions per place. [2025-01-10 01:16:40,973 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 33 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2025-01-10 01:16:40,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 228 flow [2025-01-10 01:16:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:16:40,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:16:40,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2025-01-10 01:16:40,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2025-01-10 01:16:40,975 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 91 flow. Second operand 5 states and 73 transitions. [2025-01-10 01:16:40,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 228 flow [2025-01-10 01:16:40,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:16:40,978 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 127 flow [2025-01-10 01:16:40,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2025-01-10 01:16:40,979 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2025-01-10 01:16:40,979 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 127 flow [2025-01-10 01:16:40,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:40,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:40,980 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:40,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 01:16:40,980 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:16:40,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:40,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1316015651, now seen corresponding path program 1 times [2025-01-10 01:16:40,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:40,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40600647] [2025-01-10 01:16:40,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:40,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:40,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:16:41,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:16:41,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:41,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:41,079 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 01:16:41,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:41,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40600647] [2025-01-10 01:16:41,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40600647] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:16:41,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341041882] [2025-01-10 01:16:41,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:41,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:41,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:41,085 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 01:16:41,086 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 01:16:41,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:16:41,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:16:41,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:41,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:41,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:16:41,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:41,169 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 01:16:41,169 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:16:41,198 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 01:16:41,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341041882] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:16:41,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:16:41,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2025-01-10 01:16:41,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461681508] [2025-01-10 01:16:41,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:16:41,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:16:41,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:41,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:16:41,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-10 01:16:41,203 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-01-10 01:16:41,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 01:16:41,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:41,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-01-10 01:16:41,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:41,366 INFO L124 PetriNetUnfolderBase]: 202/422 cut-off events. [2025-01-10 01:16:41,366 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2025-01-10 01:16:41,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 422 events. 202/422 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1845 event pairs, 46 based on Foata normal form. 5/405 useless extension candidates. Maximal degree in co-relation 603. Up to 117 conditions per place. [2025-01-10 01:16:41,369 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 58 selfloop transitions, 17 changer transitions 0/79 dead transitions. [2025-01-10 01:16:41,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 79 transitions, 439 flow [2025-01-10 01:16:41,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 01:16:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 01:16:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2025-01-10 01:16:41,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4517241379310345 [2025-01-10 01:16:41,371 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 127 flow. Second operand 10 states and 131 transitions. [2025-01-10 01:16:41,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 79 transitions, 439 flow [2025-01-10 01:16:41,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:16:41,374 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 247 flow [2025-01-10 01:16:41,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=247, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2025-01-10 01:16:41,374 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2025-01-10 01:16:41,374 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 247 flow [2025-01-10 01:16:41,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 01:16:41,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:41,375 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:41,382 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 01:16:41,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:41,580 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:16:41,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:41,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1314298365, now seen corresponding path program 1 times [2025-01-10 01:16:41,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:41,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774942596] [2025-01-10 01:16:41,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:41,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:41,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:16:41,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:16:41,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:41,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:41,592 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 01:16:41,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:16:41,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:16:41,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:41,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:41,614 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 01:16:41,614 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 01:16:41,615 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2025-01-10 01:16:41,616 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-01-10 01:16:41,616 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-01-10 01:16:41,617 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-01-10 01:16:41,617 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2025-01-10 01:16:41,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 01:16:41,617 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-01-10 01:16:41,635 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-10 01:16:41,635 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 01:16:41,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:16:41 BasicIcfg [2025-01-10 01:16:41,639 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 01:16:41,640 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 01:16:41,640 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 01:16:41,640 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 01:16:41,641 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:40" (3/4) ... [2025-01-10 01:16:41,642 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 01:16:41,643 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 01:16:41,643 INFO L158 Benchmark]: Toolchain (without parser) took 2282.20ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 45.6MB in the end (delta: 75.6MB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. [2025-01-10 01:16:41,644 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 117.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:41,644 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.78ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 101.1MB in the end (delta: 20.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 01:16:41,644 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.34ms. Allocated memory is still 167.8MB. Free memory was 101.1MB in the beginning and 99.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:41,644 INFO L158 Benchmark]: Boogie Preprocessor took 34.47ms. Allocated memory is still 167.8MB. Free memory was 99.7MB in the beginning and 98.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:41,644 INFO L158 Benchmark]: RCFGBuilder took 350.41ms. Allocated memory is still 167.8MB. Free memory was 98.4MB in the beginning and 78.3MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 01:16:41,645 INFO L158 Benchmark]: TraceAbstraction took 1509.26ms. Allocated memory is still 167.8MB. Free memory was 77.6MB in the beginning and 45.6MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2025-01-10 01:16:41,645 INFO L158 Benchmark]: Witness Printer took 2.82ms. Allocated memory is still 167.8MB. Free memory was 45.6MB in the beginning and 45.6MB in the end (delta: 33.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:41,646 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 117.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.78ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 101.1MB in the end (delta: 20.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.34ms. Allocated memory is still 167.8MB. Free memory was 101.1MB in the beginning and 99.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.47ms. Allocated memory is still 167.8MB. Free memory was 99.7MB in the beginning and 98.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 350.41ms. Allocated memory is still 167.8MB. Free memory was 98.4MB in the beginning and 78.3MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1509.26ms. Allocated memory is still 167.8MB. Free memory was 77.6MB in the beginning and 45.6MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * Witness Printer took 2.82ms. Allocated memory is still 167.8MB. Free memory was 45.6MB in the beginning and 45.6MB in the end (delta: 33.1kB). 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; [L772] 0 _N = __VERIFIER_nondet_int() [L773] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L773] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L774] 0 pthread_t t1, t2; [L775] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [\old(arg)={0:0}, _N=0, limit=0, t1=-1] [L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=0, t1=-1, t2=0] [L757] COND FALSE 1 !(__VERIFIER_nondet_int()) [L760] 1 limit = _N + 1 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1] [L765] 2 int i, bound; [L766] 2 bound = limit [L767] 2 i = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=0, limit=1] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=1, limit=1] [L767] COND FALSE 2 !(i < bound) [L768] CALL 2 __VERIFIER_assert(i <= _N) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1] [L752] 2 __assert_fail ("0", "generated/unwind1.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1] - UnprovableResult [Line: 771]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 775]: 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: 776]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 43 locations, 5 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: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 131 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 299 IncrementalHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 3 mSDtfsCounter, 299 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=3, InterpolantAutomatonStates: 21, 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, 0.4s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 107 SizeOfPredicates, 6 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 1/4 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 01:16:41,661 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 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/unwind1-nondet.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 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:16:44,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:16:44,322 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-10 01:16:44,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:16:44,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:16:44,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:16:44,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:16:44,356 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:16:44,357 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:16:44,357 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:16:44,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:16:44,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:16:44,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:16:44,357 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:16:44,357 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:16:44,357 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:16:44,357 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:16:44,357 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:16:44,357 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:16:44,358 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:16:44,359 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:16:44,359 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:16:44,360 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:16:44,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:16:44,360 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:16:44,360 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 01:16:44,361 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 01:16:44,361 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:16:44,361 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:16:44,361 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:16:44,361 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:16:44,361 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:16:44,361 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:16:44,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:16:44,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:16:44,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:44,361 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:16:44,361 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:16:44,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:16:44,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:16:44,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:44,362 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:16:44,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:16:44,362 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 01:16:44,362 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 01:16:44,362 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:16:44,362 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:16:44,362 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:16:44,362 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:16:44,362 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 -> 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 [2025-01-10 01:16:44,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:16:44,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:16:44,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:16:44,667 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:16:44,668 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:16:44,669 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2025-01-10 01:16:45,881 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9ea4e7e89/51acf7324cde4c19b6d33304c8160169/FLAG8300858be [2025-01-10 01:16:46,123 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:16:46,124 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2025-01-10 01:16:46,138 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9ea4e7e89/51acf7324cde4c19b6d33304c8160169/FLAG8300858be [2025-01-10 01:16:46,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9ea4e7e89/51acf7324cde4c19b6d33304c8160169 [2025-01-10 01:16:46,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:16:46,158 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:16:46,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:16:46,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:16:46,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:16:46,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17885d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46, skipping insertion in model container [2025-01-10 01:16:46,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,190 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:16:46,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:16:46,494 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:16:46,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:16:46,568 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:16:46,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46 WrapperNode [2025-01-10 01:16:46,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:16:46,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:16:46,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:16:46,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:16:46,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,589 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,604 INFO L138 Inliner]: procedures = 170, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2025-01-10 01:16:46,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:16:46,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:16:46,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:16:46,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:16:46,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,616 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,624 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 01:16:46,624 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,624 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,628 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:16:46,634 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:16:46,634 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:16:46,634 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:16:46,635 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46" (1/1) ... [2025-01-10 01:16:46,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:46,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:46,669 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 01:16:46,672 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 01:16:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:16:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-01-10 01:16:46,701 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-01-10 01:16:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-01-10 01:16:46,701 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-01-10 01:16:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 01:16:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:16:46,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:16:46,703 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 01:16:46,820 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:16:46,821 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:16:46,910 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:16:46,911 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:16:47,033 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:16:47,033 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 01:16:47,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:47 BoogieIcfgContainer [2025-01-10 01:16:47,033 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:16:47,036 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:16:47,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:16:47,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:16:47,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:16:46" (1/3) ... [2025-01-10 01:16:47,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79977d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:47, skipping insertion in model container [2025-01-10 01:16:47,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:46" (2/3) ... [2025-01-10 01:16:47,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79977d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:47, skipping insertion in model container [2025-01-10 01:16:47,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:47" (3/3) ... [2025-01-10 01:16:47,045 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind1-nondet.i [2025-01-10 01:16:47,056 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:16:47,057 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind1-nondet.i that has 3 procedures, 26 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-01-10 01:16:47,057 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:16:47,098 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 01:16:47,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2025-01-10 01:16:47,168 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-01-10 01:16:47,169 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 01:16:47,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2025-01-10 01:16:47,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2025-01-10 01:16:47,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2025-01-10 01:16:47,177 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:16:47,189 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;@34bf6941, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:16:47,189 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-01-10 01:16:47,196 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:16:47,196 INFO L124 PetriNetUnfolderBase]: 4/21 cut-off events. [2025-01-10 01:16:47,196 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 01:16:47,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:47,197 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:47,197 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:16:47,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:47,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1530501846, now seen corresponding path program 1 times [2025-01-10 01:16:47,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:47,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669380939] [2025-01-10 01:16:47,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:47,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:47,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:47,215 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 01:16:47,217 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 01:16:47,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 01:16:47,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 01:16:47,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:47,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:47,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 01:16:47,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:47,416 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 01:16:47,417 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:16:47,417 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 01:16:47,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669380939] [2025-01-10 01:16:47,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669380939] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:47,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:47,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 01:16:47,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306891079] [2025-01-10 01:16:47,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:47,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 01:16:47,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 01:16:47,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 01:16:47,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 01:16:47,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2025-01-10 01:16:47,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:47,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:47,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2025-01-10 01:16:47,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:47,576 INFO L124 PetriNetUnfolderBase]: 124/273 cut-off events. [2025-01-10 01:16:47,576 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2025-01-10 01:16:47,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 273 events. 124/273 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1193 event pairs, 68 based on Foata normal form. 33/265 useless extension candidates. Maximal degree in co-relation 460. Up to 146 conditions per place. [2025-01-10 01:16:47,581 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 27 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2025-01-10 01:16:47,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 163 flow [2025-01-10 01:16:47,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:16:47,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:16:47,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2025-01-10 01:16:47,596 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-01-10 01:16:47,598 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 5 states and 80 transitions. [2025-01-10 01:16:47,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 163 flow [2025-01-10 01:16:47,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 149 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 01:16:47,605 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 80 flow [2025-01-10 01:16:47,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2025-01-10 01:16:47,609 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2025-01-10 01:16:47,609 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 80 flow [2025-01-10 01:16:47,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:47,609 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:47,609 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:47,616 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 01:16:47,813 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 01:16:47,813 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:16:47,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:47,814 INFO L85 PathProgramCache]: Analyzing trace with hash 199931125, now seen corresponding path program 1 times [2025-01-10 01:16:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:47,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188659589] [2025-01-10 01:16:47,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:47,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:47,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:47,819 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 01:16:47,820 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 01:16:47,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 01:16:47,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 01:16:47,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:47,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:47,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 01:16:47,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:47,891 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:16:47,891 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 01:16:47,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188659589] [2025-01-10 01:16:47,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188659589] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:47,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:47,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:16:47,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693302442] [2025-01-10 01:16:47,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:47,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:16:47,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 01:16:47,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:16:47,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:16:47,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-01-10 01:16:47,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:47,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:47,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-01-10 01:16:47,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:47,996 INFO L124 PetriNetUnfolderBase]: 111/247 cut-off events. [2025-01-10 01:16:47,996 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2025-01-10 01:16:47,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 247 events. 111/247 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 940 event pairs, 30 based on Foata normal form. 13/245 useless extension candidates. Maximal degree in co-relation 260. Up to 97 conditions per place. [2025-01-10 01:16:47,998 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 33 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2025-01-10 01:16:47,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 216 flow [2025-01-10 01:16:48,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:16:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:16:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2025-01-10 01:16:48,000 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2025-01-10 01:16:48,001 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 80 flow. Second operand 5 states and 73 transitions. [2025-01-10 01:16:48,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 216 flow [2025-01-10 01:16:48,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 01:16:48,002 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 111 flow [2025-01-10 01:16:48,003 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=111, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2025-01-10 01:16:48,003 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2025-01-10 01:16:48,003 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 111 flow [2025-01-10 01:16:48,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:48,003 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:48,003 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:48,010 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 01:16:48,204 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 01:16:48,204 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:16:48,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:48,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1294668635, now seen corresponding path program 1 times [2025-01-10 01:16:48,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:48,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1673686071] [2025-01-10 01:16:48,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:48,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:48,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:48,218 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 01:16:48,220 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 01:16:48,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:16:48,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:16:48,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:48,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:48,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 01:16:48,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:48,511 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 01:16:48,511 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:16:48,688 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 01:16:48,689 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 01:16:48,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673686071] [2025-01-10 01:16:48,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673686071] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:16:48,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:16:48,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2025-01-10 01:16:48,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818577563] [2025-01-10 01:16:48,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 01:16:48,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 01:16:48,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 01:16:48,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 01:16:48,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-01-10 01:16:48,728 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-01-10 01:16:48,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 111 flow. Second operand has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 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 01:16:48,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:48,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-01-10 01:16:48,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:49,823 INFO L124 PetriNetUnfolderBase]: 257/543 cut-off events. [2025-01-10 01:16:49,823 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2025-01-10 01:16:49,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382 conditions, 543 events. 257/543 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2506 event pairs, 15 based on Foata normal form. 10/516 useless extension candidates. Maximal degree in co-relation 664. Up to 94 conditions per place. [2025-01-10 01:16:49,831 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 82 selfloop transitions, 35 changer transitions 0/121 dead transitions. [2025-01-10 01:16:49,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 121 transitions, 621 flow [2025-01-10 01:16:49,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-10 01:16:49,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-01-10 01:16:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 243 transitions. [2025-01-10 01:16:49,839 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39901477832512317 [2025-01-10 01:16:49,839 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 111 flow. Second operand 21 states and 243 transitions. [2025-01-10 01:16:49,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 121 transitions, 621 flow [2025-01-10 01:16:49,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 121 transitions, 618 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:16:49,847 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 320 flow [2025-01-10 01:16:49,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=320, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2025-01-10 01:16:49,851 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2025-01-10 01:16:49,851 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 320 flow [2025-01-10 01:16:49,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 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 01:16:49,852 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:49,852 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:49,858 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 01:16:50,052 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 01:16:50,053 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:16:50,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash -369984645, now seen corresponding path program 1 times [2025-01-10 01:16:50,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:50,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832101152] [2025-01-10 01:16:50,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:50,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:50,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:50,056 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 01:16:50,057 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 01:16:50,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:16:50,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:16:50,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:50,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:50,112 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 01:16:50,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:16:50,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:16:50,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:50,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:50,141 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-10 01:16:50,141 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 01:16:50,142 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2025-01-10 01:16:50,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-01-10 01:16:50,144 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-01-10 01:16:50,144 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-01-10 01:16:50,144 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2025-01-10 01:16:50,152 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 01:16:50,344 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 01:16:50,345 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-01-10 01:16:50,366 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-10 01:16:50,368 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 01:16:50,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:16:50 BasicIcfg [2025-01-10 01:16:50,374 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 01:16:50,374 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 01:16:50,374 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 01:16:50,375 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 01:16:50,375 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:47" (3/4) ... [2025-01-10 01:16:50,376 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 01:16:50,377 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 01:16:50,378 INFO L158 Benchmark]: Toolchain (without parser) took 4219.59ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 41.8MB in the end (delta: 49.1MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2025-01-10 01:16:50,378 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 62.0MB in the beginning and 62.0MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:50,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.78ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 70.3MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 01:16:50,379 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.09ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 68.6MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 01:16:50,379 INFO L158 Benchmark]: Boogie Preprocessor took 28.79ms. Allocated memory is still 117.4MB. Free memory was 68.6MB in the beginning and 66.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:50,379 INFO L158 Benchmark]: RCFGBuilder took 399.24ms. Allocated memory is still 117.4MB. Free memory was 66.7MB in the beginning and 43.3MB in the end (delta: 23.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 01:16:50,380 INFO L158 Benchmark]: TraceAbstraction took 3337.31ms. Allocated memory is still 117.4MB. Free memory was 42.6MB in the beginning and 41.8MB in the end (delta: 831.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:50,380 INFO L158 Benchmark]: Witness Printer took 2.76ms. Allocated memory is still 117.4MB. Free memory was 41.8MB in the beginning and 41.8MB in the end (delta: 8.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:50,382 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 62.0MB in the beginning and 62.0MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 410.78ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 70.3MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.09ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 68.6MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.79ms. Allocated memory is still 117.4MB. Free memory was 68.6MB in the beginning and 66.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 399.24ms. Allocated memory is still 117.4MB. Free memory was 66.7MB in the beginning and 43.3MB in the end (delta: 23.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3337.31ms. Allocated memory is still 117.4MB. Free memory was 42.6MB in the beginning and 41.8MB in the end (delta: 831.1kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.76ms. Allocated memory is still 117.4MB. Free memory was 41.8MB in the beginning and 41.8MB in the end (delta: 8.4kB). 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; [L772] 0 _N = __VERIFIER_nondet_int() [L773] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L773] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L774] 0 pthread_t t1, t2; [L775] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [\old(arg)={0:0}, _N=0, limit=0, t1=-1] [L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=0, t1=-1, t2=0] [L757] COND FALSE 1 !(__VERIFIER_nondet_int()) [L760] 1 limit = _N + 1 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1] [L765] 2 int i, bound; [L766] 2 bound = limit [L767] 2 i = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=0, limit=1] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=1, limit=1] [L767] COND FALSE 2 !(i < bound) [L768] CALL 2 __VERIFIER_assert(i <= _N) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1] [L752] 2 __assert_fail ("0", "generated/unwind1.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1] - UnprovableResult [Line: 771]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 775]: 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: 776]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 43 locations, 5 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: 3.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 207 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 198 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 527 IncrementalHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 2 mSDtfsCounter, 527 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=320occurred in iteration=3, InterpolantAutomatonStates: 31, 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, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 194 SizeOfPredicates, 9 NumberOfNonLiveVariables, 125 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/3 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 01:16:50,400 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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample