./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:59:11,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:59:11,750 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:59:11,753 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:59:11,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:59:11,774 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:59:11,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:59:11,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:59:11,777 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:59:11,777 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:59:11,777 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:59:11,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:59:11,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:59:11,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:59:11,778 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:59:11,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:59:11,778 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:59:11,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:59:11,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:59:11,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:59:11,778 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:59:11,778 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:59:11,779 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:59:11,779 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:59:11,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:59:11,779 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/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 -> 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f [2025-03-04 09:59:12,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:59:12,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:59:12,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:59:12,027 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:59:12,027 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:59:12,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2025-03-04 09:59:13,161 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1f063bc2/b42afc7bd4ca43fe97b964527cdf33a2/FLAG22489bd63 [2025-03-04 09:59:13,469 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:59:13,469 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2025-03-04 09:59:13,485 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1f063bc2/b42afc7bd4ca43fe97b964527cdf33a2/FLAG22489bd63 [2025-03-04 09:59:13,727 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1f063bc2/b42afc7bd4ca43fe97b964527cdf33a2 [2025-03-04 09:59:13,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:59:13,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:59:13,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:59:13,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:59:13,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:59:13,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:59:13" (1/1) ... [2025-03-04 09:59:13,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@254f8fde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:13, skipping insertion in model container [2025-03-04 09:59:13,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:59:13" (1/1) ... [2025-03-04 09:59:13,775 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:59:14,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:59:14,354 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:59:14,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:59:14,510 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:59:14,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:14 WrapperNode [2025-03-04 09:59:14,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:59:14,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:59:14,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:59:14,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:59:14,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:14" (1/1) ... [2025-03-04 09:59:14,533 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:14" (1/1) ... [2025-03-04 09:59:14,582 INFO L138 Inliner]: procedures = 491, calls = 159, calls flagged for inlining = 48, calls inlined = 122, statements flattened = 1857 [2025-03-04 09:59:14,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:59:14,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:59:14,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:59:14,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:59:14,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:14" (1/1) ... [2025-03-04 09:59:14,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:14" (1/1) ... [2025-03-04 09:59:14,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:14" (1/1) ... [2025-03-04 09:59:14,640 INFO L175 MemorySlicer]: Split 311 memory accesses to 9 slices as follows [2, 80, 6, 2, 195, 2, 12, 4, 8]. 63 percent of accesses are in the largest equivalence class. The 54 initializations are split as follows [2, 20, 0, 0, 26, 0, 4, 0, 2]. The 95 writes are split as follows [0, 20, 4, 1, 61, 1, 4, 2, 2]. [2025-03-04 09:59:14,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:14" (1/1) ... [2025-03-04 09:59:14,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:14" (1/1) ... [2025-03-04 09:59:14,692 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:14" (1/1) ... [2025-03-04 09:59:14,697 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:14" (1/1) ... [2025-03-04 09:59:14,712 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:14" (1/1) ... [2025-03-04 09:59:14,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:14" (1/1) ... [2025-03-04 09:59:14,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:59:14,736 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:59:14,736 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:59:14,736 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:59:14,737 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:14" (1/1) ... [2025-03-04 09:59:14,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:59:14,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:59:14,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 09:59:14,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 09:59:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2025-03-04 09:59:14,810 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2025-03-04 09:59:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 09:59:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:59:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 09:59:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 09:59:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 09:59:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 09:59:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 09:59:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 09:59:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-04 09:59:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-04 09:59:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-04 09:59:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-04 09:59:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 09:59:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:59:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:59:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:59:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 09:59:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-04 09:59:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-04 09:59:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-04 09:59:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-04 09:59:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2025-03-04 09:59:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2025-03-04 09:59:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:59:14,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:59:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 09:59:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:59:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:59:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 09:59:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-04 09:59:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-04 09:59:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-04 09:59:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-04 09:59:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-03-04 09:59:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-04 09:59:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 09:59:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 09:59:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 09:59:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 09:59:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 09:59:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-04 09:59:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-04 09:59:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-04 09:59:14,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-04 09:59:14,819 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 09:59:15,116 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:59:15,118 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:59:15,480 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1935: havoc ~#r~0#1.base, ~#r~0#1.offset; [2025-03-04 09:59:15,480 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1935-1: SUMMARY for call ULTIMATE.dealloc(~#r~0#1.base, ~#r~0#1.offset); srcloc: null [2025-03-04 09:59:15,480 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:15,480 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-1: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:15,480 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-7: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:15,480 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-8: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:15,480 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828: havoc readV_#t~mem39#1; [2025-03-04 09:59:15,480 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-5: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,159 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,160 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-1: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,160 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-7: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,160 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-8: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,160 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-14: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,160 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-15: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,160 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-21: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,160 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-22: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,160 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-28: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,161 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-29: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,161 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-35: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,161 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-36: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,161 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-42: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,161 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-43: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,162 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-49: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,162 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-50: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,162 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-56: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,162 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-57: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,162 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,162 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-63: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,162 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-64: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,162 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-5: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,163 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-70: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,163 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-71: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,163 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-10: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,163 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-15: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,163 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-77: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,163 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-78: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,163 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-20: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,163 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-84: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,163 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-85: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,163 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-25: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,163 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-91: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,163 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-30: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,163 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-92: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,164 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-35: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,164 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-98: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,164 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-99: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,164 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-40: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,164 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-105: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,164 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-106: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,164 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-45: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,164 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-50: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,164 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-112: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,164 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-113: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,164 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-55: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,164 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-119: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,164 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-120: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,165 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-60: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,165 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-126: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,165 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-65: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,165 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-127: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,165 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-70: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,165 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-133: havoc readV_~#expected~0#1.base, readV_~#expected~0#1.offset; [2025-03-04 09:59:17,165 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1826-134: SUMMARY for call ULTIMATE.dealloc(readV_~#expected~0#1.base, readV_~#expected~0#1.offset); srcloc: null [2025-03-04 09:59:17,165 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-75: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,165 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-80: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,166 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-85: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,166 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-90: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,166 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1828-95: havoc readV_#t~mem39#1; [2025-03-04 09:59:17,166 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1882: havoc Pop_~temp~2#1; [2025-03-04 09:59:17,166 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1882-9: havoc Pop_~temp~2#1; [2025-03-04 09:59:17,166 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1888: havoc Pop_#t~ret61#1; [2025-03-04 09:59:17,166 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1888-8: havoc Pop_#t~ret61#1; [2025-03-04 09:59:17,167 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1946: havoc main_~#handles~0#1.base, main_~#handles~0#1.offset; [2025-03-04 09:59:17,167 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1946-1: SUMMARY for call ULTIMATE.dealloc(main_~#handles~0#1.base, main_~#handles~0#1.offset); srcloc: null [2025-03-04 09:59:17,168 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 09:59:17,168 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:59:18,111 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:59:18,111 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:59:18,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:59:18 BoogieIcfgContainer [2025-03-04 09:59:18,112 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:59:18,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:59:18,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:59:18,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:59:18,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:59:13" (1/3) ... [2025-03-04 09:59:18,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a238e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:59:18, skipping insertion in model container [2025-03-04 09:59:18,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:59:14" (2/3) ... [2025-03-04 09:59:18,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a238e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:59:18, skipping insertion in model container [2025-03-04 09:59:18,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:59:18" (3/3) ... [2025-03-04 09:59:18,118 INFO L128 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i [2025-03-04 09:59:18,129 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:59:18,131 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG workstealqueue_mutex-2.i that has 2 procedures, 857 locations, 1 initial locations, 11 loop locations, and 520 error locations. [2025-03-04 09:59:18,131 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 09:59:18,314 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-04 09:59:18,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 860 places, 938 transitions, 1883 flow [2025-03-04 09:59:18,691 INFO L124 PetriNetUnfolderBase]: 154/1765 cut-off events. [2025-03-04 09:59:18,692 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 09:59:18,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1770 conditions, 1765 events. 154/1765 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13306 event pairs, 0 based on Foata normal form. 0/628 useless extension candidates. Maximal degree in co-relation 907. Up to 6 conditions per place. [2025-03-04 09:59:18,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 860 places, 938 transitions, 1883 flow [2025-03-04 09:59:18,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 860 places, 938 transitions, 1883 flow [2025-03-04 09:59:18,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:59:18,767 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;@6095c17b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:59:18,767 INFO L334 AbstractCegarLoop]: Starting to check reachability of 565 error locations. [2025-03-04 09:59:18,771 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:59:18,772 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2025-03-04 09:59:18,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:59:18,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:59:18,773 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2025-03-04 09:59:18,773 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr474REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 562 more)] === [2025-03-04 09:59:18,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:59:18,778 INFO L85 PathProgramCache]: Analyzing trace with hash 184377, now seen corresponding path program 1 times [2025-03-04 09:59:18,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:59:18,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980216219] [2025-03-04 09:59:18,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:59:18,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:59:18,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-04 09:59:18,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-04 09:59:18,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:59:18,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:59:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:59:19,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:59:19,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980216219] [2025-03-04 09:59:19,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980216219] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:59:19,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:59:19,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 09:59:19,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703686514] [2025-03-04 09:59:19,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:59:19,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:59:19,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:59:19,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:59:19,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:59:19,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 938 [2025-03-04 09:59:19,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 860 places, 938 transitions, 1883 flow. Second operand has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 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) [2025-03-04 09:59:19,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:59:19,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 938 [2025-03-04 09:59:19,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:59:26,360 INFO L124 PetriNetUnfolderBase]: 35990/78012 cut-off events. [2025-03-04 09:59:26,360 INFO L125 PetriNetUnfolderBase]: For 7/10 co-relation queries the response was YES. [2025-03-04 09:59:26,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143494 conditions, 78012 events. 35990/78012 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 791143 event pairs, 8610 based on Foata normal form. 764/49329 useless extension candidates. Maximal degree in co-relation 142240. Up to 36104 conditions per place. [2025-03-04 09:59:26,735 INFO L140 encePairwiseOnDemand]: 620/938 looper letters, 943 selfloop transitions, 73 changer transitions 0/1209 dead transitions. [2025-03-04 09:59:26,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 1209 transitions, 4457 flow [2025-03-04 09:59:26,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:59:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:59:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2034 transitions. [2025-03-04 09:59:26,752 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7228144989339019 [2025-03-04 09:59:26,753 INFO L175 Difference]: Start difference. First operand has 860 places, 938 transitions, 1883 flow. Second operand 3 states and 2034 transitions. [2025-03-04 09:59:26,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 1209 transitions, 4457 flow [2025-03-04 09:59:26,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 1209 transitions, 4457 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 09:59:26,781 INFO L231 Difference]: Finished difference. Result has 668 places, 804 transitions, 2139 flow [2025-03-04 09:59:26,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=938, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=664, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2139, PETRI_PLACES=668, PETRI_TRANSITIONS=804} [2025-03-04 09:59:26,787 INFO L279 CegarLoopForPetriNet]: 860 programPoint places, -192 predicate places. [2025-03-04 09:59:26,787 INFO L471 AbstractCegarLoop]: Abstraction has has 668 places, 804 transitions, 2139 flow [2025-03-04 09:59:26,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 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) [2025-03-04 09:59:26,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:59:26,787 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2025-03-04 09:59:26,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 09:59:26,788 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr475REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 562 more)] === [2025-03-04 09:59:26,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:59:26,788 INFO L85 PathProgramCache]: Analyzing trace with hash 184378, now seen corresponding path program 1 times [2025-03-04 09:59:26,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:59:26,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164260632] [2025-03-04 09:59:26,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:59:26,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:59:26,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-04 09:59:26,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-04 09:59:26,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:59:26,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:59:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:59:26,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:59:26,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164260632] [2025-03-04 09:59:26,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164260632] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:59:26,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:59:26,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 09:59:26,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419501546] [2025-03-04 09:59:26,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:59:26,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:59:26,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:59:26,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:59:26,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:59:27,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 938 [2025-03-04 09:59:27,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 804 transitions, 2139 flow. Second operand has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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) [2025-03-04 09:59:27,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:59:27,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 938 [2025-03-04 09:59:27,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:59:33,560 INFO L124 PetriNetUnfolderBase]: 35049/77183 cut-off events. [2025-03-04 09:59:33,561 INFO L125 PetriNetUnfolderBase]: For 7776/8088 co-relation queries the response was YES. [2025-03-04 09:59:33,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152763 conditions, 77183 events. 35049/77183 cut-off events. For 7776/8088 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 781689 event pairs, 22562 based on Foata normal form. 2/51124 useless extension candidates. Maximal degree in co-relation 151399. Up to 62506 conditions per place. [2025-03-04 09:59:33,931 INFO L140 encePairwiseOnDemand]: 931/938 looper letters, 552 selfloop transitions, 4 changer transitions 0/816 dead transitions. [2025-03-04 09:59:33,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 816 transitions, 3279 flow [2025-03-04 09:59:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:59:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:59:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1220 transitions. [2025-03-04 09:59:33,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43354655294953803 [2025-03-04 09:59:33,936 INFO L175 Difference]: Start difference. First operand has 668 places, 804 transitions, 2139 flow. Second operand 3 states and 1220 transitions. [2025-03-04 09:59:33,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 816 transitions, 3279 flow [2025-03-04 09:59:33,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 665 places, 816 transitions, 3131 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 09:59:33,991 INFO L231 Difference]: Finished difference. Result has 666 places, 804 transitions, 2011 flow [2025-03-04 09:59:33,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=938, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=797, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2011, PETRI_PLACES=666, PETRI_TRANSITIONS=804} [2025-03-04 09:59:33,993 INFO L279 CegarLoopForPetriNet]: 860 programPoint places, -194 predicate places. [2025-03-04 09:59:33,993 INFO L471 AbstractCegarLoop]: Abstraction has has 666 places, 804 transitions, 2011 flow [2025-03-04 09:59:33,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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) [2025-03-04 09:59:33,994 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:59:33,994 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-04 09:59:33,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 09:59:33,994 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr470REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 562 more)] === [2025-03-04 09:59:33,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:59:33,995 INFO L85 PathProgramCache]: Analyzing trace with hash 177383369, now seen corresponding path program 1 times [2025-03-04 09:59:33,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:59:33,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689796276] [2025-03-04 09:59:33,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:59:33,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:59:34,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 09:59:34,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 09:59:34,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:59:34,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:59:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:59:34,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:59:34,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689796276] [2025-03-04 09:59:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689796276] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:59:34,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:59:34,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:59:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427249244] [2025-03-04 09:59:34,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:59:34,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:59:34,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:59:34,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:59:34,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:59:34,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 938 [2025-03-04 09:59:34,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 804 transitions, 2011 flow. Second operand has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 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) [2025-03-04 09:59:34,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:59:34,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 938 [2025-03-04 09:59:34,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:59:42,511 INFO L124 PetriNetUnfolderBase]: 38291/82772 cut-off events. [2025-03-04 09:59:42,511 INFO L125 PetriNetUnfolderBase]: For 4701/4754 co-relation queries the response was YES. [2025-03-04 09:59:42,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164195 conditions, 82772 events. 38291/82772 cut-off events. For 4701/4754 co-relation queries the response was YES. Maximal size of possible extension queue 986. Compared 840620 event pairs, 8264 based on Foata normal form. 45/53466 useless extension candidates. Maximal degree in co-relation 162870. Up to 36171 conditions per place. [2025-03-04 09:59:42,853 INFO L140 encePairwiseOnDemand]: 785/938 looper letters, 1003 selfloop transitions, 195 changer transitions 0/1388 dead transitions. [2025-03-04 09:59:42,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 1388 transitions, 5620 flow [2025-03-04 09:59:42,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:59:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 09:59:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2181 transitions. [2025-03-04 09:59:42,857 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4650319829424307 [2025-03-04 09:59:42,857 INFO L175 Difference]: Start difference. First operand has 666 places, 804 transitions, 2011 flow. Second operand 5 states and 2181 transitions. [2025-03-04 09:59:42,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 1388 transitions, 5620 flow [2025-03-04 09:59:42,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 1388 transitions, 5615 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 09:59:42,873 INFO L231 Difference]: Finished difference. Result has 670 places, 910 transitions, 3088 flow [2025-03-04 09:59:42,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=938, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3088, PETRI_PLACES=670, PETRI_TRANSITIONS=910} [2025-03-04 09:59:42,875 INFO L279 CegarLoopForPetriNet]: 860 programPoint places, -190 predicate places. [2025-03-04 09:59:42,875 INFO L471 AbstractCegarLoop]: Abstraction has has 670 places, 910 transitions, 3088 flow [2025-03-04 09:59:42,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 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) [2025-03-04 09:59:42,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:59:42,875 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-04 09:59:42,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 09:59:42,876 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr471REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 562 more)] === [2025-03-04 09:59:42,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:59:42,876 INFO L85 PathProgramCache]: Analyzing trace with hash 177383370, now seen corresponding path program 1 times [2025-03-04 09:59:42,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:59:42,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881675944] [2025-03-04 09:59:42,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:59:42,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:59:42,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 09:59:42,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 09:59:42,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:59:42,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:59:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:59:43,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:59:43,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881675944] [2025-03-04 09:59:43,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881675944] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:59:43,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:59:43,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:59:43,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103371885] [2025-03-04 09:59:43,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:59:43,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:59:43,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:59:43,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:59:43,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:59:43,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 938 [2025-03-04 09:59:43,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 910 transitions, 3088 flow. Second operand has 4 states, 4 states have (on average 235.75) internal successors, (943), 4 states have internal predecessors, (943), 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) [2025-03-04 09:59:43,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:59:43,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 938 [2025-03-04 09:59:43,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand