./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/twostage_3-2.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/twostage_3-2.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 0db6974abead9f0b145be669e8625acba9e17feac06fbf7c6b45d50c107fdab8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:38:21,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:38:21,903 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:38:21,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:38:21,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:38:21,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:38:21,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:38:21,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:38:21,924 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:38:21,924 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:38:21,924 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:38:21,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:38:21,924 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:38:21,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:38:21,924 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:38:21,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:38:21,925 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:38:21,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:38:21,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:38:21,926 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:38:21,926 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:38:21,926 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:38:21,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:38:21,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:38:21,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:38:21,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:38:21,926 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:38:21,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:38:21,926 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:38:21,926 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:38:21,926 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:38:21,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:38:21,926 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 -> 0db6974abead9f0b145be669e8625acba9e17feac06fbf7c6b45d50c107fdab8 [2025-01-10 00:38:22,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:38:22,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:38:22,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:38:22,118 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:38:22,119 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:38:22,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/twostage_3-2.i [2025-01-10 00:38:23,321 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f183c0718/20da08b84e2c4a56823fd785b7ae830b/FLAG50355cfcd [2025-01-10 00:38:23,644 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:38:23,644 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/twostage_3-2.i [2025-01-10 00:38:23,663 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f183c0718/20da08b84e2c4a56823fd785b7ae830b/FLAG50355cfcd [2025-01-10 00:38:23,687 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f183c0718/20da08b84e2c4a56823fd785b7ae830b [2025-01-10 00:38:23,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:38:23,691 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:38:23,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:38:23,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:38:23,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:38:23,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:38:23" (1/1) ... [2025-01-10 00:38:23,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a8b500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:23, skipping insertion in model container [2025-01-10 00:38:23,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:38:23" (1/1) ... [2025-01-10 00:38:23,734 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:38:24,042 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:38:24,044 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:38:24,056 WARN L1731 CHandler]: Possible shadowing of function lock [2025-01-10 00:38:24,056 WARN L1731 CHandler]: Possible shadowing of function lock [2025-01-10 00:38:24,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:38:24,065 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:38:24,116 WARN L1731 CHandler]: Possible shadowing of function lock [2025-01-10 00:38:24,117 WARN L1731 CHandler]: Possible shadowing of function lock [2025-01-10 00:38:24,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:38:24,165 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:38:24,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24 WrapperNode [2025-01-10 00:38:24,167 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:38:24,168 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:38:24,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:38:24,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:38:24,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24" (1/1) ... [2025-01-10 00:38:24,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24" (1/1) ... [2025-01-10 00:38:24,211 INFO L138 Inliner]: procedures = 373, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 161 [2025-01-10 00:38:24,213 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:38:24,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:38:24,214 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:38:24,214 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:38:24,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24" (1/1) ... [2025-01-10 00:38:24,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24" (1/1) ... [2025-01-10 00:38:24,226 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24" (1/1) ... [2025-01-10 00:38:24,238 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-01-10 00:38:24,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24" (1/1) ... [2025-01-10 00:38:24,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24" (1/1) ... [2025-01-10 00:38:24,246 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24" (1/1) ... [2025-01-10 00:38:24,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24" (1/1) ... [2025-01-10 00:38:24,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24" (1/1) ... [2025-01-10 00:38:24,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24" (1/1) ... [2025-01-10 00:38:24,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24" (1/1) ... [2025-01-10 00:38:24,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:38:24,262 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:38:24,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:38:24,262 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:38:24,266 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24" (1/1) ... [2025-01-10 00:38:24,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:38:24,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:38:24,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 00:38:24,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 00:38:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2025-01-10 00:38:24,306 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2025-01-10 00:38:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2025-01-10 00:38:24,306 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2025-01-10 00:38:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 00:38:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 00:38:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-10 00:38:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 00:38:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 00:38:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-10 00:38:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 00:38:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 00:38:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-10 00:38:24,310 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-10 00:38:24,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 00:38:24,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:38:24,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 00:38:24,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 00:38:24,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-10 00:38:24,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:38:24,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:38:24,312 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 00:38:24,445 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:38:24,447 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:38:24,614 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 00:38:24,614 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:38:24,751 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:38:24,752 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 00:38:24,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:38:24 BoogieIcfgContainer [2025-01-10 00:38:24,753 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:38:24,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:38:24,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:38:24,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:38:24,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:38:23" (1/3) ... [2025-01-10 00:38:24,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ae0393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:38:24, skipping insertion in model container [2025-01-10 00:38:24,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:24" (2/3) ... [2025-01-10 00:38:24,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ae0393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:38:24, skipping insertion in model container [2025-01-10 00:38:24,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:38:24" (3/3) ... [2025-01-10 00:38:24,761 INFO L128 eAbstractionObserver]: Analyzing ICFG twostage_3-2.i [2025-01-10 00:38:24,770 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:38:24,771 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG twostage_3-2.i that has 3 procedures, 69 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2025-01-10 00:38:24,772 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 00:38:24,825 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-01-10 00:38:24,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 79 transitions, 178 flow [2025-01-10 00:38:24,904 INFO L124 PetriNetUnfolderBase]: 16/168 cut-off events. [2025-01-10 00:38:24,906 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-01-10 00:38:24,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 168 events. 16/168 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 818 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 86. Up to 7 conditions per place. [2025-01-10 00:38:24,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 79 transitions, 178 flow [2025-01-10 00:38:24,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 79 transitions, 178 flow [2025-01-10 00:38:24,924 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:38:24,933 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;@127a1ba1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:38:24,933 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2025-01-10 00:38:24,938 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:38:24,938 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2025-01-10 00:38:24,938 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:38:24,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:38:24,939 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-01-10 00:38:24,939 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-01-10 00:38:24,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:38:24,943 INFO L85 PathProgramCache]: Analyzing trace with hash 15299807, now seen corresponding path program 1 times [2025-01-10 00:38:24,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:38:24,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267487602] [2025-01-10 00:38:24,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:38:24,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:38:25,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 00:38:25,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 00:38:25,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:25,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:38:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:38:25,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:38:25,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267487602] [2025-01-10 00:38:25,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267487602] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:38:25,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:38:25,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 00:38:25,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618789216] [2025-01-10 00:38:25,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:38:25,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:38:25,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:38:25,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:38:25,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:38:25,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 79 [2025-01-10 00:38:25,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 178 flow. Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:25,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:38:25,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 79 [2025-01-10 00:38:25,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:38:25,520 INFO L124 PetriNetUnfolderBase]: 1878/3713 cut-off events. [2025-01-10 00:38:25,520 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2025-01-10 00:38:25,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6770 conditions, 3713 events. 1878/3713 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 23896 event pairs, 1757 based on Foata normal form. 180/3645 useless extension candidates. Maximal degree in co-relation 6202. Up to 2976 conditions per place. [2025-01-10 00:38:25,543 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 42 selfloop transitions, 0 changer transitions 0/73 dead transitions. [2025-01-10 00:38:25,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 73 transitions, 250 flow [2025-01-10 00:38:25,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 00:38:25,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-10 00:38:25,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 109 transitions. [2025-01-10 00:38:25,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.689873417721519 [2025-01-10 00:38:25,555 INFO L175 Difference]: Start difference. First operand has 75 places, 79 transitions, 178 flow. Second operand 2 states and 109 transitions. [2025-01-10 00:38:25,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 73 transitions, 250 flow [2025-01-10 00:38:25,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 250 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:38:25,560 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 166 flow [2025-01-10 00:38:25,562 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=166, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2025-01-10 00:38:25,564 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -2 predicate places. [2025-01-10 00:38:25,564 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 166 flow [2025-01-10 00:38:25,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:25,564 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:38:25,564 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:38:25,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 00:38:25,565 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-01-10 00:38:25,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:38:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash 474344748, now seen corresponding path program 1 times [2025-01-10 00:38:25,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:38:25,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696216963] [2025-01-10 00:38:25,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:38:25,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:38:25,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:38:25,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:38:25,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:25,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:38:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:38:25,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:38:25,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696216963] [2025-01-10 00:38:25,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696216963] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:38:25,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:38:25,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:38:25,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128009470] [2025-01-10 00:38:25,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:38:25,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:38:25,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:38:25,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:38:25,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:38:25,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 79 [2025-01-10 00:38:25,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:25,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:38:25,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 79 [2025-01-10 00:38:25,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:38:26,088 INFO L124 PetriNetUnfolderBase]: 2141/4196 cut-off events. [2025-01-10 00:38:26,088 INFO L125 PetriNetUnfolderBase]: For 123/131 co-relation queries the response was YES. [2025-01-10 00:38:26,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7696 conditions, 4196 events. 2141/4196 cut-off events. For 123/131 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 28681 event pairs, 1506 based on Foata normal form. 8/3974 useless extension candidates. Maximal degree in co-relation 7691. Up to 2578 conditions per place. [2025-01-10 00:38:26,109 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 63 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2025-01-10 00:38:26,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 92 transitions, 334 flow [2025-01-10 00:38:26,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:38:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:38:26,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2025-01-10 00:38:26,112 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6244725738396625 [2025-01-10 00:38:26,112 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 166 flow. Second operand 3 states and 148 transitions. [2025-01-10 00:38:26,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 92 transitions, 334 flow [2025-01-10 00:38:26,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 92 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:38:26,117 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 166 flow [2025-01-10 00:38:26,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2025-01-10 00:38:26,118 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -2 predicate places. [2025-01-10 00:38:26,119 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 166 flow [2025-01-10 00:38:26,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:26,119 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:38:26,119 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:38:26,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 00:38:26,120 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-01-10 00:38:26,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:38:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash 474344749, now seen corresponding path program 1 times [2025-01-10 00:38:26,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:38:26,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566652239] [2025-01-10 00:38:26,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:38:26,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:38:26,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:38:26,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:38:26,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:26,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:38:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:38:26,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:38:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566652239] [2025-01-10 00:38:26,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566652239] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:38:26,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:38:26,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:38:26,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177581038] [2025-01-10 00:38:26,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:38:26,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:38:26,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:38:26,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:38:26,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:38:26,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2025-01-10 00:38:26,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:26,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:38:26,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2025-01-10 00:38:26,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:38:27,032 INFO L124 PetriNetUnfolderBase]: 4304/8556 cut-off events. [2025-01-10 00:38:27,033 INFO L125 PetriNetUnfolderBase]: For 522/522 co-relation queries the response was YES. [2025-01-10 00:38:27,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15793 conditions, 8556 events. 4304/8556 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 66108 event pairs, 3633 based on Foata normal form. 1/8093 useless extension candidates. Maximal degree in co-relation 15787. Up to 3417 conditions per place. [2025-01-10 00:38:27,067 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 93 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2025-01-10 00:38:27,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 124 transitions, 488 flow [2025-01-10 00:38:27,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:38:27,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:38:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2025-01-10 00:38:27,069 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.680379746835443 [2025-01-10 00:38:27,069 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 166 flow. Second operand 4 states and 215 transitions. [2025-01-10 00:38:27,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 124 transitions, 488 flow [2025-01-10 00:38:27,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 124 transitions, 480 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:38:27,074 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 188 flow [2025-01-10 00:38:27,074 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2025-01-10 00:38:27,075 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2025-01-10 00:38:27,075 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 188 flow [2025-01-10 00:38:27,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:27,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:38:27,075 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:38:27,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 00:38:27,076 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-01-10 00:38:27,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:38:27,076 INFO L85 PathProgramCache]: Analyzing trace with hash -733243806, now seen corresponding path program 1 times [2025-01-10 00:38:27,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:38:27,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078337904] [2025-01-10 00:38:27,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:38:27,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:38:27,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 00:38:27,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 00:38:27,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:27,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:38:27,091 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 00:38:27,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 00:38:27,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 00:38:27,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:27,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:38:27,110 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 00:38:27,110 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 00:38:27,111 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2025-01-10 00:38:27,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (13 of 15 remaining) [2025-01-10 00:38:27,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (12 of 15 remaining) [2025-01-10 00:38:27,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2025-01-10 00:38:27,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2025-01-10 00:38:27,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2025-01-10 00:38:27,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2025-01-10 00:38:27,112 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2025-01-10 00:38:27,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2025-01-10 00:38:27,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2025-01-10 00:38:27,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2025-01-10 00:38:27,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2025-01-10 00:38:27,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2025-01-10 00:38:27,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2025-01-10 00:38:27,113 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2025-01-10 00:38:27,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 00:38:27,113 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-01-10 00:38:27,128 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-10 00:38:27,128 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 00:38:27,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:38:27 BasicIcfg [2025-01-10 00:38:27,131 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 00:38:27,132 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 00:38:27,132 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 00:38:27,132 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 00:38:27,132 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:38:24" (3/4) ... [2025-01-10 00:38:27,133 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 00:38:27,134 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 00:38:27,135 INFO L158 Benchmark]: Toolchain (without parser) took 3443.70ms. Allocated memory was 142.6MB in the beginning and 260.0MB in the end (delta: 117.4MB). Free memory was 111.2MB in the beginning and 77.7MB in the end (delta: 33.4MB). Peak memory consumption was 148.5MB. Max. memory is 16.1GB. [2025-01-10 00:38:27,135 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:38:27,135 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.61ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 72.0MB in the end (delta: 39.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-01-10 00:38:27,135 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.96ms. Allocated memory is still 142.6MB. Free memory was 72.0MB in the beginning and 69.5MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:38:27,135 INFO L158 Benchmark]: Boogie Preprocessor took 48.61ms. Allocated memory is still 142.6MB. Free memory was 69.5MB in the beginning and 66.8MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:38:27,135 INFO L158 Benchmark]: RCFGBuilder took 491.07ms. Allocated memory is still 142.6MB. Free memory was 66.8MB in the beginning and 95.5MB in the end (delta: -28.8MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. [2025-01-10 00:38:27,136 INFO L158 Benchmark]: TraceAbstraction took 2376.19ms. Allocated memory was 142.6MB in the beginning and 260.0MB in the end (delta: 117.4MB). Free memory was 94.8MB in the beginning and 77.7MB in the end (delta: 17.0MB). Peak memory consumption was 133.4MB. Max. memory is 16.1GB. [2025-01-10 00:38:27,136 INFO L158 Benchmark]: Witness Printer took 2.27ms. Allocated memory is still 260.0MB. Free memory was 77.7MB in the beginning and 77.7MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:38:27,137 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.61ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 72.0MB in the end (delta: 39.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.96ms. Allocated memory is still 142.6MB. Free memory was 72.0MB in the beginning and 69.5MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.61ms. Allocated memory is still 142.6MB. Free memory was 69.5MB in the beginning and 66.8MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 491.07ms. Allocated memory is still 142.6MB. Free memory was 66.8MB in the beginning and 95.5MB in the end (delta: -28.8MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2376.19ms. Allocated memory was 142.6MB in the beginning and 260.0MB in the end (delta: 117.4MB). Free memory was 94.8MB in the beginning and 77.7MB in the end (delta: 17.0MB). Peak memory consumption was 133.4MB. Max. memory is 16.1GB. * Witness Printer took 2.27ms. Allocated memory is still 260.0MB. Free memory was 77.7MB in the beginning and 77.7MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: overapproximation of sscanf at line 1285, overapproximation of sscanf at line 1284. Possible FailurePath: [L1236] static int iTThreads = 2; [L1237] static int iRThreads = 1; [L1238] static int data1Value = 0; [L1239] static int data2Value = 0; [L1240] pthread_mutex_t *data1Lock; [L1241] pthread_mutex_t *data2Lock; [L1278] int i,err; VAL [\old(argc)=3, \old(argv)={1073741826:1073741827}, argc=3, data1Lock={0:0}, data1Value=0, data2Lock={0:0}, data2Value=0, iRThreads=1, iTThreads=2] [L1279] COND TRUE argc != 1 VAL [\old(argc)=3, \old(argv)={1073741826:1073741827}, argc=3, data1Lock={0:0}, data1Value=0, data2Lock={0:0}, data2Value=0, iRThreads=1, iTThreads=2] [L1280] COND FALSE !(argc != 3) VAL [\old(argc)=3, \old(argv)={1073741826:1073741827}, argc=3, data1Lock={0:0}, data1Value=0, data2Lock={0:0}, data2Value=0, iRThreads=1, iTThreads=2] [L1284] argv[1] [L1285] argv[2] [L1288] data1Lock = (pthread_mutex_t *) malloc(sizeof(pthread_mutex_t)) [L1289] data2Lock = (pthread_mutex_t *) malloc(sizeof(pthread_mutex_t)) [L1290] EXPR err = pthread_mutex_init(data1Lock, ((void *)0)) [L1290] COND FALSE !(0 != (err = pthread_mutex_init(data1Lock, ((void *)0)))) [L1294] EXPR err = pthread_mutex_init(data2Lock, ((void *)0)) [L1294] COND FALSE !(0 != (err = pthread_mutex_init(data2Lock, ((void *)0)))) [L1298] pthread_t tPool[iTThreads]; [L1299] pthread_t rPool[iRThreads]; [L1300] i = 0 VAL [\old(argc)=3, \old(argv)={1073741826:1073741827}, argc=3, data1Lock={-2:0}, data1Value=0, data2Lock={-3:0}, data2Value=0, err=0, i=0, iRThreads=0, iTThreads=1073741824, rPool={5:0}, tPool={4:0}] [L1300] COND TRUE i < iTThreads - UnprovableResult [Line: 1284]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds Reason: Not analyzed. - UnprovableResult [Line: 1285]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1277]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1301]: 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: 1307]: 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: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 105 locations, 15 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: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 178 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 138 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 394 IncrementalHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 394 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=188occurred in iteration=3, InterpolantAutomatonStates: 9, 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-10 00:38:27,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/twostage_3-2.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 0db6974abead9f0b145be669e8625acba9e17feac06fbf7c6b45d50c107fdab8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:38:29,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:38:29,449 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-10 00:38:29,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:38:29,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:38:29,500 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:38:29,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:38:29,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:38:29,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:38:29,510 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:38:29,510 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:38:29,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:38:29,511 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:38:29,511 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:38:29,511 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:38:29,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:38:29,511 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:38:29,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:38:29,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:38:29,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:38:29,511 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:38:29,511 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:38:29,511 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:38:29,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:38:29,511 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:38:29,511 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:38:29,512 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:38:29,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:38:29,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:38:29,512 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 00:38:29,513 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 00:38:29,513 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:38:29,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:38:29,513 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:38:29,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:38:29,513 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 -> 0db6974abead9f0b145be669e8625acba9e17feac06fbf7c6b45d50c107fdab8 [2025-01-10 00:38:29,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:38:29,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:38:29,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:38:29,753 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:38:29,753 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:38:29,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/twostage_3-2.i [2025-01-10 00:38:30,982 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/17b929899/5bbd65a7f4ba49a586f0a9537b96a850/FLAG3b1de5895 [2025-01-10 00:38:31,236 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:38:31,238 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/twostage_3-2.i [2025-01-10 00:38:31,254 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/17b929899/5bbd65a7f4ba49a586f0a9537b96a850/FLAG3b1de5895 [2025-01-10 00:38:31,268 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/17b929899/5bbd65a7f4ba49a586f0a9537b96a850 [2025-01-10 00:38:31,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:38:31,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:38:31,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:38:31,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:38:31,276 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:38:31,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46788d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31, skipping insertion in model container [2025-01-10 00:38:31,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,310 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:38:31,668 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:38:31,669 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:38:31,679 WARN L1731 CHandler]: Possible shadowing of function lock [2025-01-10 00:38:31,679 WARN L1731 CHandler]: Possible shadowing of function lock [2025-01-10 00:38:31,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:38:31,688 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:38:31,749 WARN L1731 CHandler]: Possible shadowing of function lock [2025-01-10 00:38:31,752 WARN L1731 CHandler]: Possible shadowing of function lock [2025-01-10 00:38:31,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:38:31,819 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:38:31,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31 WrapperNode [2025-01-10 00:38:31,822 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:38:31,822 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:38:31,823 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:38:31,823 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:38:31,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,868 INFO L138 Inliner]: procedures = 376, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 160 [2025-01-10 00:38:31,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:38:31,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:38:31,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:38:31,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:38:31,876 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,885 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,899 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-01-10 00:38:31,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,903 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,912 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,918 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,919 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:38:31,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:38:31,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:38:31,926 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:38:31,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31" (1/1) ... [2025-01-10 00:38:31,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:38:31,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:38:31,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 00:38:31,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 00:38:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-01-10 00:38:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-01-10 00:38:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-01-10 00:38:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2025-01-10 00:38:31,986 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2025-01-10 00:38:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2025-01-10 00:38:31,986 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2025-01-10 00:38:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 00:38:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 00:38:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-01-10 00:38:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-01-10 00:38:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-01-10 00:38:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 00:38:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-01-10 00:38:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-01-10 00:38:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-10 00:38:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-10 00:38:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 00:38:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:38:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:38:31,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:38:31,988 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 00:38:32,117 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:38:32,118 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:38:32,373 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 00:38:32,373 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:38:32,492 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:38:32,492 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 00:38:32,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:38:32 BoogieIcfgContainer [2025-01-10 00:38:32,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:38:32,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:38:32,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:38:32,501 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:38:32,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:38:31" (1/3) ... [2025-01-10 00:38:32,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c6d35e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:38:32, skipping insertion in model container [2025-01-10 00:38:32,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:31" (2/3) ... [2025-01-10 00:38:32,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c6d35e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:38:32, skipping insertion in model container [2025-01-10 00:38:32,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:38:32" (3/3) ... [2025-01-10 00:38:32,506 INFO L128 eAbstractionObserver]: Analyzing ICFG twostage_3-2.i [2025-01-10 00:38:32,524 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:38:32,525 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG twostage_3-2.i that has 3 procedures, 69 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2025-01-10 00:38:32,526 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 00:38:32,594 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-01-10 00:38:32,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 79 transitions, 178 flow [2025-01-10 00:38:32,674 INFO L124 PetriNetUnfolderBase]: 16/168 cut-off events. [2025-01-10 00:38:32,676 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-01-10 00:38:32,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 168 events. 16/168 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 818 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 86. Up to 7 conditions per place. [2025-01-10 00:38:32,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 79 transitions, 178 flow [2025-01-10 00:38:32,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 79 transitions, 178 flow [2025-01-10 00:38:32,692 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:38:32,704 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;@569b4639, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:38:32,704 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2025-01-10 00:38:32,707 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:38:32,708 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2025-01-10 00:38:32,708 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:38:32,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:38:32,708 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-01-10 00:38:32,708 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-01-10 00:38:32,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:38:32,715 INFO L85 PathProgramCache]: Analyzing trace with hash 15238239, now seen corresponding path program 1 times [2025-01-10 00:38:32,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:38:32,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391319825] [2025-01-10 00:38:32,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:38:32,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:38:32,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:38:32,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:38:32,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 00:38:32,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 00:38:32,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 00:38:32,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:32,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:38:32,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-10 00:38:32,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:38:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:38:32,828 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:38:32,829 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:38:32,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391319825] [2025-01-10 00:38:32,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391319825] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:38:32,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:38:32,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 00:38:32,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483732640] [2025-01-10 00:38:32,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:38:32,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:38:32,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:38:32,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:38:32,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:38:32,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 79 [2025-01-10 00:38:32,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 178 flow. Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:32,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:38:32,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 79 [2025-01-10 00:38:32,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:38:33,209 INFO L124 PetriNetUnfolderBase]: 1878/3713 cut-off events. [2025-01-10 00:38:33,210 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2025-01-10 00:38:33,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6770 conditions, 3713 events. 1878/3713 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 23896 event pairs, 1757 based on Foata normal form. 180/3645 useless extension candidates. Maximal degree in co-relation 6202. Up to 2976 conditions per place. [2025-01-10 00:38:33,226 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 42 selfloop transitions, 0 changer transitions 0/73 dead transitions. [2025-01-10 00:38:33,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 73 transitions, 250 flow [2025-01-10 00:38:33,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 00:38:33,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-10 00:38:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 109 transitions. [2025-01-10 00:38:33,234 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.689873417721519 [2025-01-10 00:38:33,234 INFO L175 Difference]: Start difference. First operand has 75 places, 79 transitions, 178 flow. Second operand 2 states and 109 transitions. [2025-01-10 00:38:33,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 73 transitions, 250 flow [2025-01-10 00:38:33,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 250 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:38:33,239 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 166 flow [2025-01-10 00:38:33,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=166, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2025-01-10 00:38:33,243 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -2 predicate places. [2025-01-10 00:38:33,243 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 166 flow [2025-01-10 00:38:33,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:33,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:38:33,243 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:38:33,251 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 00:38:33,447 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 00:38:33,447 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-01-10 00:38:33,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:38:33,448 INFO L85 PathProgramCache]: Analyzing trace with hash 472436138, now seen corresponding path program 1 times [2025-01-10 00:38:33,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:38:33,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851324164] [2025-01-10 00:38:33,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:38:33,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:38:33,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:38:33,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:38:33,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 00:38:33,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:38:33,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:38:33,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:33,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:38:33,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:38:33,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:38:33,605 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-10 00:38:33,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2025-01-10 00:38:33,633 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-10 00:38:33,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2025-01-10 00:38:33,654 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-10 00:38:33,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2025-01-10 00:38:33,676 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-10 00:38:33,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2025-01-10 00:38:33,692 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-10 00:38:33,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2025-01-10 00:38:33,706 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-10 00:38:33,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2025-01-10 00:38:33,723 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-10 00:38:33,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2025-01-10 00:38:33,742 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-10 00:38:33,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2025-01-10 00:38:33,757 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-10 00:38:33,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2025-01-10 00:38:33,774 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-10 00:38:33,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2025-01-10 00:38:33,793 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-10 00:38:33,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2025-01-10 00:38:33,809 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-01-10 00:38:33,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2025-01-10 00:38:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:38:33,855 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:38:33,855 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:38:33,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851324164] [2025-01-10 00:38:33,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851324164] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:38:33,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:38:33,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:38:33,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699900297] [2025-01-10 00:38:33,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:38:33,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:38:33,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:38:33,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:38:33,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:38:33,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 79 [2025-01-10 00:38:33,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:33,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:38:33,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 79 [2025-01-10 00:38:33,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:38:34,282 INFO L124 PetriNetUnfolderBase]: 2141/4196 cut-off events. [2025-01-10 00:38:34,282 INFO L125 PetriNetUnfolderBase]: For 115/123 co-relation queries the response was YES. [2025-01-10 00:38:34,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7696 conditions, 4196 events. 2141/4196 cut-off events. For 115/123 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 28701 event pairs, 1506 based on Foata normal form. 8/3974 useless extension candidates. Maximal degree in co-relation 7691. Up to 2578 conditions per place. [2025-01-10 00:38:34,301 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 63 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2025-01-10 00:38:34,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 92 transitions, 334 flow [2025-01-10 00:38:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:38:34,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:38:34,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2025-01-10 00:38:34,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6244725738396625 [2025-01-10 00:38:34,303 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 166 flow. Second operand 3 states and 148 transitions. [2025-01-10 00:38:34,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 92 transitions, 334 flow [2025-01-10 00:38:34,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 92 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:38:34,306 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 166 flow [2025-01-10 00:38:34,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2025-01-10 00:38:34,306 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -2 predicate places. [2025-01-10 00:38:34,307 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 166 flow [2025-01-10 00:38:34,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:34,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:38:34,307 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 00:38:34,313 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 00:38:34,507 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 00:38:34,507 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-01-10 00:38:34,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:38:34,509 INFO L85 PathProgramCache]: Analyzing trace with hash 472436139, now seen corresponding path program 1 times [2025-01-10 00:38:34,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:38:34,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714249149] [2025-01-10 00:38:34,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:38:34,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:38:34,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:38:34,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:38:34,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 00:38:34,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 00:38:34,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 00:38:34,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:34,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:38:34,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:38:34,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:38:34,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2025-01-10 00:38:34,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:38:34,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:38:34,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2025-01-10 00:38:34,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:38:34,643 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:38:34,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:38:34,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:38:34,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2025-01-10 00:38:34,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:38:34,681 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:38:34,684 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:38:34,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:38:34,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:38:34,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2025-01-10 00:38:34,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:38:34,698 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:38:34,700 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:38:34,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:38:34,708 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:38:34,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:38:34,713 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:38:34,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:38:34,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:38:34,720 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:38:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:38:34,734 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:38:34,734 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:38:34,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714249149] [2025-01-10 00:38:34,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714249149] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:38:34,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:38:34,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:38:34,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529842482] [2025-01-10 00:38:34,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:38:34,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:38:34,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:38:34,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:38:34,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:38:34,771 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2025-01-10 00:38:34,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:34,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:38:34,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2025-01-10 00:38:34,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:38:35,456 INFO L124 PetriNetUnfolderBase]: 4304/8556 cut-off events. [2025-01-10 00:38:35,456 INFO L125 PetriNetUnfolderBase]: For 522/522 co-relation queries the response was YES. [2025-01-10 00:38:35,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15793 conditions, 8556 events. 4304/8556 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 66061 event pairs, 3633 based on Foata normal form. 1/8093 useless extension candidates. Maximal degree in co-relation 15787. Up to 3417 conditions per place. [2025-01-10 00:38:35,498 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 93 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2025-01-10 00:38:35,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 124 transitions, 488 flow [2025-01-10 00:38:35,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:38:35,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:38:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2025-01-10 00:38:35,499 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.680379746835443 [2025-01-10 00:38:35,500 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 166 flow. Second operand 4 states and 215 transitions. [2025-01-10 00:38:35,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 124 transitions, 488 flow [2025-01-10 00:38:35,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 124 transitions, 480 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:38:35,504 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 188 flow [2025-01-10 00:38:35,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2025-01-10 00:38:35,505 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2025-01-10 00:38:35,505 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 188 flow [2025-01-10 00:38:35,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:35,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:38:35,506 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:38:35,512 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 00:38:35,706 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 00:38:35,706 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-01-10 00:38:35,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:38:35,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1758071454, now seen corresponding path program 1 times [2025-01-10 00:38:35,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:38:35,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557401270] [2025-01-10 00:38:35,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:38:35,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:38:35,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:38:35,712 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:38:35,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 00:38:35,766 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 00:38:35,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 00:38:35,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:35,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:38:35,788 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 00:38:35,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 00:38:35,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 00:38:35,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:35,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:38:35,825 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-10 00:38:35,825 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 00:38:35,825 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2025-01-10 00:38:35,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (13 of 15 remaining) [2025-01-10 00:38:35,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONARRAY_INDEX (12 of 15 remaining) [2025-01-10 00:38:35,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2025-01-10 00:38:35,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2025-01-10 00:38:35,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2025-01-10 00:38:35,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2025-01-10 00:38:35,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2025-01-10 00:38:35,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2025-01-10 00:38:35,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2025-01-10 00:38:35,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2025-01-10 00:38:35,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2025-01-10 00:38:35,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2025-01-10 00:38:35,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2025-01-10 00:38:35,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2025-01-10 00:38:35,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 00:38:36,028 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 00:38:36,029 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-01-10 00:38:36,045 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-10 00:38:36,045 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 00:38:36,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:38:36 BasicIcfg [2025-01-10 00:38:36,049 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 00:38:36,049 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 00:38:36,049 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 00:38:36,049 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 00:38:36,050 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:38:32" (3/4) ... [2025-01-10 00:38:36,051 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 00:38:36,051 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 00:38:36,052 INFO L158 Benchmark]: Toolchain (without parser) took 4781.35ms. Allocated memory was 117.4MB in the beginning and 360.7MB in the end (delta: 243.3MB). Free memory was 89.7MB in the beginning and 178.6MB in the end (delta: -88.8MB). Peak memory consumption was 160.0MB. Max. memory is 16.1GB. [2025-01-10 00:38:36,052 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 61.9MB in the beginning and 61.9MB in the end (delta: 37.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:38:36,052 INFO L158 Benchmark]: CACSL2BoogieTranslator took 549.57ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 49.3MB in the end (delta: 40.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-01-10 00:38:36,053 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.41ms. Allocated memory is still 117.4MB. Free memory was 49.3MB in the beginning and 46.8MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:38:36,053 INFO L158 Benchmark]: Boogie Preprocessor took 54.96ms. Allocated memory is still 117.4MB. Free memory was 46.8MB in the beginning and 44.0MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 00:38:36,053 INFO L158 Benchmark]: RCFGBuilder took 566.78ms. Allocated memory is still 117.4MB. Free memory was 44.0MB in the beginning and 47.3MB in the end (delta: -3.3MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2025-01-10 00:38:36,053 INFO L158 Benchmark]: TraceAbstraction took 3554.92ms. Allocated memory was 117.4MB in the beginning and 360.7MB in the end (delta: 243.3MB). Free memory was 46.5MB in the beginning and 178.6MB in the end (delta: -132.0MB). Peak memory consumption was 104.3MB. Max. memory is 16.1GB. [2025-01-10 00:38:36,053 INFO L158 Benchmark]: Witness Printer took 2.45ms. Allocated memory is still 360.7MB. Free memory was 178.6MB in the beginning and 178.6MB in the end (delta: 11.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 00:38:36,054 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 61.9MB in the beginning and 61.9MB in the end (delta: 37.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 549.57ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 49.3MB in the end (delta: 40.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.41ms. Allocated memory is still 117.4MB. Free memory was 49.3MB in the beginning and 46.8MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 54.96ms. Allocated memory is still 117.4MB. Free memory was 46.8MB in the beginning and 44.0MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 566.78ms. Allocated memory is still 117.4MB. Free memory was 44.0MB in the beginning and 47.3MB in the end (delta: -3.3MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3554.92ms. Allocated memory was 117.4MB in the beginning and 360.7MB in the end (delta: 243.3MB). Free memory was 46.5MB in the beginning and 178.6MB in the end (delta: -132.0MB). Peak memory consumption was 104.3MB. Max. memory is 16.1GB. * Witness Printer took 2.45ms. Allocated memory is still 360.7MB. Free memory was 178.6MB in the beginning and 178.6MB in the end (delta: 11.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: overapproximation of sscanf at line 1284, overapproximation of sscanf at line 1285. Possible FailurePath: [L1236] static int iTThreads = 2; [L1237] static int iRThreads = 1; [L1238] static int data1Value = 0; [L1239] static int data2Value = 0; [L1240] pthread_mutex_t *data1Lock; [L1241] pthread_mutex_t *data2Lock; [L1278] int i,err; VAL [\old(argc)=3, \old(argv)={0:0}, argc=3, data1Lock={0:0}, data1Value=0, data2Lock={0:0}, data2Value=0, iRThreads=1, iTThreads=2] [L1279] COND TRUE argc != 1 VAL [\old(argc)=3, \old(argv)={0:0}, argc=3, data1Lock={0:0}, data1Value=0, data2Lock={0:0}, data2Value=0, iRThreads=1, iTThreads=2] [L1280] COND FALSE !(argc != 3) VAL [\old(argc)=3, \old(argv)={0:0}, argc=3, data1Lock={0:0}, data1Value=0, data2Lock={0:0}, data2Value=0, iRThreads=1, iTThreads=2] [L1284] argv[1] [L1285] argv[2] [L1288] data1Lock = (pthread_mutex_t *) malloc(sizeof(pthread_mutex_t)) [L1289] data2Lock = (pthread_mutex_t *) malloc(sizeof(pthread_mutex_t)) [L1290] EXPR err = pthread_mutex_init(data1Lock, ((void *)0)) [L1290] COND FALSE !(0 != (err = pthread_mutex_init(data1Lock, ((void *)0)))) [L1294] EXPR err = pthread_mutex_init(data2Lock, ((void *)0)) [L1294] COND FALSE !(0 != (err = pthread_mutex_init(data2Lock, ((void *)0)))) [L1298] pthread_t tPool[iTThreads]; [L1299] pthread_t rPool[iRThreads]; [L1300] i = 0 VAL [\old(argc)=3, \old(argv)={0:0}, argc=3, data1Lock={4:0}, data1Value=0, data2Lock={5:0}, data2Value=0, err=0, i=0, iRThreads=0, iTThreads=1073741824, rPool={15:0}, tPool={7:0}] [L1300] COND TRUE i < iTThreads - UnprovableResult [Line: 1284]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds Reason: Not analyzed. - UnprovableResult [Line: 1285]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1277]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1301]: 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: 1307]: 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: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 105 locations, 15 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: 3.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 169 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 331 IncrementalHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 4 mSDtfsCounter, 331 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=188occurred in iteration=3, InterpolantAutomatonStates: 9, 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, 0.5s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 2 QuantifiedInterpolants, 133 SizeOfPredicates, 7 NumberOfNonLiveVariables, 155 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-10 00:38:36,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample