./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-complex/bounded_buffer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc 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-complex/bounded_buffer.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 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:52:42,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:52:42,086 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:52:42,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:52:42,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:52:42,103 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:52:42,103 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:52:42,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:52:42,104 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:52:42,104 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:52:42,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:52:42,104 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:52:42,104 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:52:42,105 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:52:42,105 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:52:42,105 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:52:42,105 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:52:42,105 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:52:42,105 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:52:42,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:52:42,105 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:52:42,105 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:52:42,105 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:52:42,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:52:42,106 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:52:42,106 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:52:42,106 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:52:42,106 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:52:42,106 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:52:42,106 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:52:42,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:52:42,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:52:42,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:52:42,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:52:42,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:52:42,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:52:42,107 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:52:42,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:52:42,107 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:52:42,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:52:42,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:52:42,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:52:42,107 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 -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2025-02-06 12:52:42,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:52:42,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:52:42,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:52:42,298 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:52:42,299 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:52:42,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-02-06 12:52:43,478 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2c24919e5/6da40fed93b74613a1b2f3292d41ae54/FLAG2686f4883 [2025-02-06 12:52:43,766 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:52:43,767 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-02-06 12:52:43,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2c24919e5/6da40fed93b74613a1b2f3292d41ae54/FLAG2686f4883 [2025-02-06 12:52:44,044 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2c24919e5/6da40fed93b74613a1b2f3292d41ae54 [2025-02-06 12:52:44,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:52:44,047 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:52:44,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:52:44,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:52:44,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:52:44,055 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:52:44" (1/1) ... [2025-02-06 12:52:44,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6896696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44, skipping insertion in model container [2025-02-06 12:52:44,057 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:52:44" (1/1) ... [2025-02-06 12:52:44,121 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:52:44,507 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:52:44,508 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:52:44,533 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:52:44,535 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:52:44,543 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:52:44,547 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:52:44,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:52:44,561 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:52:44,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:52:44,703 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:52:44,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44 WrapperNode [2025-02-06 12:52:44,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:52:44,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:52:44,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:52:44,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:52:44,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44" (1/1) ... [2025-02-06 12:52:44,723 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44" (1/1) ... [2025-02-06 12:52:44,753 INFO L138 Inliner]: procedures = 429, calls = 135, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 464 [2025-02-06 12:52:44,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:52:44,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:52:44,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:52:44,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:52:44,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44" (1/1) ... [2025-02-06 12:52:44,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44" (1/1) ... [2025-02-06 12:52:44,766 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44" (1/1) ... [2025-02-06 12:52:44,780 INFO L175 MemorySlicer]: Split 78 memory accesses to 6 slices as follows [2, 6, 5, 5, 2, 58]. 74 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 26 writes are split as follows [0, 2, 3, 3, 1, 17]. [2025-02-06 12:52:44,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44" (1/1) ... [2025-02-06 12:52:44,781 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44" (1/1) ... [2025-02-06 12:52:44,798 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44" (1/1) ... [2025-02-06 12:52:44,799 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44" (1/1) ... [2025-02-06 12:52:44,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44" (1/1) ... [2025-02-06 12:52:44,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44" (1/1) ... [2025-02-06 12:52:44,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:52:44,806 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:52:44,806 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:52:44,806 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:52:44,806 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44" (1/1) ... [2025-02-06 12:52:44,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:52:44,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:44,836 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) [2025-02-06 12:52:44,843 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 [2025-02-06 12:52:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2025-02-06 12:52:44,859 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2025-02-06 12:52:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:52:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 12:52:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 12:52:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 12:52:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 12:52:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-06 12:52:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-06 12:52:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 12:52:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 12:52:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:52:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 12:52:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 12:52:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 12:52:44,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-06 12:52:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-02-06 12:52:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-02-06 12:52:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:52:44,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:52:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 12:52:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 12:52:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 12:52:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 12:52:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-06 12:52:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-02-06 12:52:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-02-06 12:52:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2025-02-06 12:52:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2025-02-06 12:52:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 12:52:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 12:52:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 12:52:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 12:52:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 12:52:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-06 12:52:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-06 12:52:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 12:52:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 12:52:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 12:52:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 12:52:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-06 12:52:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-06 12:52:44,866 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 12:52:45,042 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:52:45,044 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:52:45,540 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1646: havoc ~#temp~1#1.base, ~#temp~1#1.offset; [2025-02-06 12:52:45,540 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1646-1: SUMMARY for call ULTIMATE.dealloc(~#temp~1#1.base, ~#temp~1#1.offset); srcloc: null [2025-02-06 12:52:45,843 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1663: havoc main_~#producers~0#1.base, main_~#producers~0#1.offset; [2025-02-06 12:52:45,843 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1663-1: SUMMARY for call ULTIMATE.dealloc(main_~#producers~0#1.base, main_~#producers~0#1.offset); srcloc: null [2025-02-06 12:52:45,844 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1664: havoc main_~#consumers~0#1.base, main_~#consumers~0#1.offset; [2025-02-06 12:52:45,844 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1664-1: SUMMARY for call ULTIMATE.dealloc(main_~#consumers~0#1.base, main_~#consumers~0#1.offset); srcloc: null [2025-02-06 12:52:45,844 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1666: havoc main_~#buffer~0#1.base, main_~#buffer~0#1.offset; [2025-02-06 12:52:45,844 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1666-1: SUMMARY for call ULTIMATE.dealloc(main_~#buffer~0#1.base, main_~#buffer~0#1.offset); srcloc: null [2025-02-06 12:52:45,845 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:52:45,845 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:52:46,062 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:52:46,062 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:52:46,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:52:46 BoogieIcfgContainer [2025-02-06 12:52:46,063 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:52:46,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:52:46,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:52:46,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:52:46,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:52:44" (1/3) ... [2025-02-06 12:52:46,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba6c811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:52:46, skipping insertion in model container [2025-02-06 12:52:46,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:44" (2/3) ... [2025-02-06 12:52:46,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba6c811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:52:46, skipping insertion in model container [2025-02-06 12:52:46,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:52:46" (3/3) ... [2025-02-06 12:52:46,076 INFO L128 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2025-02-06 12:52:46,092 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:52:46,096 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bounded_buffer.i that has 3 procedures, 342 locations, 1 initial locations, 13 loop locations, and 166 error locations. [2025-02-06 12:52:46,096 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 12:52:46,253 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 12:52:46,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 348 places, 386 transitions, 792 flow [2025-02-06 12:52:46,510 INFO L124 PetriNetUnfolderBase]: 93/884 cut-off events. [2025-02-06 12:52:46,512 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-02-06 12:52:46,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 884 events. 93/884 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 6475 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 464. Up to 16 conditions per place. [2025-02-06 12:52:46,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 348 places, 386 transitions, 792 flow [2025-02-06 12:52:46,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 348 places, 386 transitions, 792 flow [2025-02-06 12:52:46,549 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:52:46,555 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;@371ec076, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:52:46,556 INFO L334 AbstractCegarLoop]: Starting to check reachability of 251 error locations. [2025-02-06 12:52:46,559 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:52:46,559 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-02-06 12:52:46,559 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:52:46,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:46,559 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 12:52:46,560 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [consumer_routineErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE, consumer_routineErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE, consumer_routineErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 248 more)] === [2025-02-06 12:52:46,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:46,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1398493, now seen corresponding path program 1 times [2025-02-06 12:52:46,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:52:46,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81024188] [2025-02-06 12:52:46,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:46,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:52:46,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:52:46,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:52:46,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:46,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:46,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:52:46,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81024188] [2025-02-06 12:52:46,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81024188] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:46,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:46,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:52:46,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789145830] [2025-02-06 12:52:46,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:46,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:52:46,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:52:46,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:52:46,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:52:46,945 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 386 [2025-02-06 12:52:46,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 386 transitions, 792 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2025-02-06 12:52:46,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:46,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 386 [2025-02-06 12:52:46,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:54,619 INFO L124 PetriNetUnfolderBase]: 56822/132689 cut-off events. [2025-02-06 12:52:54,619 INFO L125 PetriNetUnfolderBase]: For 321/325 co-relation queries the response was YES. [2025-02-06 12:52:54,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207314 conditions, 132689 events. 56822/132689 cut-off events. For 321/325 co-relation queries the response was YES. Maximal size of possible extension queue 3380. Compared 1697540 event pairs, 37069 based on Foata normal form. 9382/94996 useless extension candidates. Maximal degree in co-relation 200418. Up to 74444 conditions per place. [2025-02-06 12:52:55,914 INFO L140 encePairwiseOnDemand]: 362/386 looper letters, 121 selfloop transitions, 2 changer transitions 0/363 dead transitions. [2025-02-06 12:52:55,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 363 transitions, 992 flow [2025-02-06 12:52:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:52:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:52:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 865 transitions. [2025-02-06 12:52:55,943 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7469775474956822 [2025-02-06 12:52:55,944 INFO L175 Difference]: Start difference. First operand has 348 places, 386 transitions, 792 flow. Second operand 3 states and 865 transitions. [2025-02-06 12:52:55,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 363 transitions, 992 flow [2025-02-06 12:52:55,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 363 transitions, 992 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 12:52:55,970 INFO L231 Difference]: Finished difference. Result has 338 places, 363 transitions, 750 flow [2025-02-06 12:52:55,977 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=750, PETRI_PLACES=338, PETRI_TRANSITIONS=363} [2025-02-06 12:52:55,980 INFO L279 CegarLoopForPetriNet]: 348 programPoint places, -10 predicate places. [2025-02-06 12:52:55,984 INFO L471 AbstractCegarLoop]: Abstraction has has 338 places, 363 transitions, 750 flow [2025-02-06 12:52:55,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2025-02-06 12:52:55,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:55,985 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 12:52:55,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 12:52:55,985 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [consumer_routineErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE, consumer_routineErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE, consumer_routineErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 248 more)] === [2025-02-06 12:52:55,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:55,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1398494, now seen corresponding path program 1 times [2025-02-06 12:52:55,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:52:55,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424550798] [2025-02-06 12:52:55,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:55,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:52:56,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:52:56,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:52:56,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:56,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:56,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:52:56,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424550798] [2025-02-06 12:52:56,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424550798] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:56,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:56,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:52:56,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254632322] [2025-02-06 12:52:56,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:56,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:52:56,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:52:56,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:52:56,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:52:56,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 386 [2025-02-06 12:52:56,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 363 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 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) [2025-02-06 12:52:56,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:56,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 386 [2025-02-06 12:52:56,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:53:04,885 INFO L124 PetriNetUnfolderBase]: 56822/132678 cut-off events. [2025-02-06 12:53:04,885 INFO L125 PetriNetUnfolderBase]: For 321/325 co-relation queries the response was YES. [2025-02-06 12:53:05,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207299 conditions, 132678 events. 56822/132678 cut-off events. For 321/325 co-relation queries the response was YES. Maximal size of possible extension queue 3390. Compared 1697312 event pairs, 37069 based on Foata normal form. 7/85610 useless extension candidates. Maximal degree in co-relation 207255. Up to 74444 conditions per place. [2025-02-06 12:53:05,792 INFO L140 encePairwiseOnDemand]: 373/386 looper letters, 114 selfloop transitions, 2 changer transitions 0/352 dead transitions. [2025-02-06 12:53:05,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 352 transitions, 960 flow [2025-02-06 12:53:05,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:53:05,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:53:05,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 868 transitions. [2025-02-06 12:53:05,795 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7495682210708118 [2025-02-06 12:53:05,796 INFO L175 Difference]: Start difference. First operand has 338 places, 363 transitions, 750 flow. Second operand 3 states and 868 transitions. [2025-02-06 12:53:05,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 352 transitions, 960 flow [2025-02-06 12:53:05,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 352 transitions, 956 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 12:53:05,803 INFO L231 Difference]: Finished difference. Result has 327 places, 352 transitions, 728 flow [2025-02-06 12:53:05,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=728, PETRI_PLACES=327, PETRI_TRANSITIONS=352} [2025-02-06 12:53:05,806 INFO L279 CegarLoopForPetriNet]: 348 programPoint places, -21 predicate places. [2025-02-06 12:53:05,806 INFO L471 AbstractCegarLoop]: Abstraction has has 327 places, 352 transitions, 728 flow [2025-02-06 12:53:05,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 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) [2025-02-06 12:53:05,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:53:05,807 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:53:05,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 12:53:05,807 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [consumer_routineErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE, consumer_routineErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE, consumer_routineErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 248 more)] === [2025-02-06 12:53:05,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:53:05,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1343810175, now seen corresponding path program 1 times [2025-02-06 12:53:05,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:53:05,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242548395] [2025-02-06 12:53:05,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:53:05,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:53:05,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:53:05,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:53:05,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:53:05,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:53:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:53:05,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:53:05,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242548395] [2025-02-06 12:53:05,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242548395] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:53:05,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:53:05,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:53:05,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500581660] [2025-02-06 12:53:05,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:53:05,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:53:05,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:53:05,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:53:05,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:53:05,925 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 386 [2025-02-06 12:53:05,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 352 transitions, 728 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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) [2025-02-06 12:53:05,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:53:05,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 386 [2025-02-06 12:53:05,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:53:14,786 INFO L124 PetriNetUnfolderBase]: 56821/132677 cut-off events. [2025-02-06 12:53:14,787 INFO L125 PetriNetUnfolderBase]: For 321/325 co-relation queries the response was YES. [2025-02-06 12:53:15,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207297 conditions, 132677 events. 56821/132677 cut-off events. For 321/325 co-relation queries the response was YES. Maximal size of possible extension queue 3390. Compared 1697206 event pairs, 37069 based on Foata normal form. 1/85603 useless extension candidates. Maximal degree in co-relation 207255. Up to 74444 conditions per place.