./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f16b4cfe031f645c2fa5eeec572887c79d8e9243727503d849e4b19e0e31cc63 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:23:35,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:23:35,572 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:23:35,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:23:35,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:23:35,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:23:35,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:23:35,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:23:35,594 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:23:35,594 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:23:35,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:23:35,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:23:35,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:23:35,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:23:35,595 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:23:35,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:23:35,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:23:35,595 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:23:35,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:23:35,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:23:35,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:23:35,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:23:35,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:23:35,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:23:35,596 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:23:35,596 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:23:35,596 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:23:35,596 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:23:35,596 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:23:35,596 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:23:35,596 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:23:35,597 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:23:35,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:23:35,597 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:23:35,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:23:35,597 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:23:35,597 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:23:35,597 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:23:35,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:23:35,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:23:35,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:23:35,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:23:35,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:23:35,597 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 ! call(reach_error())) ) 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 -> f16b4cfe031f645c2fa5eeec572887c79d8e9243727503d849e4b19e0e31cc63 [2025-03-08 17:23:35,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:23:35,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:23:35,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:23:35,856 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:23:35,856 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:23:35,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i [2025-03-08 17:23:37,058 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ad3f88f6/0cc1d8d0991e4c10b5c99435a1de44b7/FLAGa93075f3e [2025-03-08 17:23:37,629 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:23:37,629 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i [2025-03-08 17:23:37,673 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ad3f88f6/0cc1d8d0991e4c10b5c99435a1de44b7/FLAGa93075f3e [2025-03-08 17:23:37,690 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ad3f88f6/0cc1d8d0991e4c10b5c99435a1de44b7 [2025-03-08 17:23:37,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:23:37,693 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:23:37,695 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:23:37,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:23:37,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:23:37,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:23:37" (1/1) ... [2025-03-08 17:23:37,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38452bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:37, skipping insertion in model container [2025-03-08 17:23:37,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:23:37" (1/1) ... [2025-03-08 17:23:37,779 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:23:38,067 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i[5520,5533] [2025-03-08 17:23:43,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:23:43,134 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:23:43,174 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i[5520,5533] [2025-03-08 17:23:43,259 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "b %b0, %1\n" : "+q" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] [2025-03-08 17:23:43,260 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "w %w0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] [2025-03-08 17:23:43,261 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "l %0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] [2025-03-08 17:23:43,261 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "q %q0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] [2025-03-08 17:23:43,356 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile("ud2"); [5817] [2025-03-08 17:23:43,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:23:43,654 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:23:43,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43 WrapperNode [2025-03-08 17:23:43,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:23:43,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:23:43,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:23:43,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:23:43,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 17:23:43,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 17:23:43,766 INFO L138 Inliner]: procedures = 1354, calls = 1479, calls flagged for inlining = 352, calls inlined = 18, statements flattened = 394 [2025-03-08 17:23:43,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:23:43,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:23:43,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:23:43,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:23:43,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 17:23:43,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 17:23:43,782 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 17:23:43,796 INFO L175 MemorySlicer]: Split 52 memory accesses to 7 slices as follows [2, 1, 4, 2, 31, 3, 9]. 60 percent of accesses are in the largest equivalence class. The 43 initializations are split as follows [2, 1, 4, 2, 31, 3, 0]. The 3 writes are split as follows [0, 0, 0, 0, 0, 0, 3]. [2025-03-08 17:23:43,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 17:23:43,803 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 17:23:43,824 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 17:23:43,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 17:23:43,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 17:23:43,832 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 17:23:43,838 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:23:43,838 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:23:43,839 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:23:43,839 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:23:43,840 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 17:23:43,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:23:43,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:23:43,872 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) [2025-03-08 17:23:43,877 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 [2025-03-08 17:23:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 17:23:43,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 17:23:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 17:23:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 17:23:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 17:23:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 17:23:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-08 17:23:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 17:23:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:23:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:23:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:23:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 17:23:43,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram [2025-03-08 17:23:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_write_nvram [2025-03-08 17:23:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_write_nvram [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 17:23:43,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 17:23:43,898 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:23:44,256 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:23:44,258 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:23:44,412 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6551: havoc access_ok_#t~nondet1065#1; [2025-03-08 17:23:44,412 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6543: havoc __put_user_#t~nondet1063#1; [2025-03-08 17:23:44,412 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6636: havoc nvram_read_byte_#t~nondet1081#1; [2025-03-08 17:23:44,500 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6551: havoc access_ok_#t~nondet1065#1; [2025-03-08 17:23:44,501 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6535: havoc __get_user_#t~nondet1061#1; [2025-03-08 17:23:44,702 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6632: havoc nvram_get_size_#t~nondet1080#1; [2025-03-08 17:23:44,702 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6650: havoc printk_#t~nondet1083#1; [2025-03-08 17:23:44,702 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6624: havoc misc_register_#t~nondet1078#1; [2025-03-08 17:23:44,703 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:23:44,703 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:23:45,144 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:23:45,145 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:23:45,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:23:45 BoogieIcfgContainer [2025-03-08 17:23:45,145 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:23:45,147 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:23:45,147 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:23:45,150 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:23:45,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:23:37" (1/3) ... [2025-03-08 17:23:45,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0cef14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:23:45, skipping insertion in model container [2025-03-08 17:23:45,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (2/3) ... [2025-03-08 17:23:45,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0cef14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:23:45, skipping insertion in model container [2025-03-08 17:23:45,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:23:45" (3/3) ... [2025-03-08 17:23:45,152 INFO L128 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_read_nvram_write_nvram.i [2025-03-08 17:23:45,165 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:23:45,167 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG char_generic_nvram_read_nvram_write_nvram.i that has 3 procedures, 43 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-08 17:23:45,168 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:23:45,239 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-08 17:23:45,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 52 transitions, 118 flow [2025-03-08 17:23:45,308 INFO L124 PetriNetUnfolderBase]: 10/50 cut-off events. [2025-03-08 17:23:45,311 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-08 17:23:45,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 50 events. 10/50 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2025-03-08 17:23:45,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 52 transitions, 118 flow [2025-03-08 17:23:45,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 48 transitions, 105 flow [2025-03-08 17:23:45,323 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:23:45,336 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=LoopHeads, 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;@101613ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:23:45,336 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-08 17:23:45,358 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:23:45,359 INFO L124 PetriNetUnfolderBase]: 8/41 cut-off events. [2025-03-08 17:23:45,359 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-08 17:23:45,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:23:45,360 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:23:45,360 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:23:45,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:23:45,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1981130031, now seen corresponding path program 1 times [2025-03-08 17:23:45,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:23:45,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943591742] [2025-03-08 17:23:45,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:23:45,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:23:45,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 17:23:45,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 17:23:45,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:23:45,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:23:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:23:46,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:23:46,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943591742] [2025-03-08 17:23:46,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943591742] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:23:46,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:23:46,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:23:46,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058931542] [2025-03-08 17:23:46,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:23:46,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:23:46,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:23:46,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:23:46,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:23:46,695 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2025-03-08 17:23:46,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2025-03-08 17:23:46,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:23:46,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2025-03-08 17:23:46,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:23:47,222 INFO L124 PetriNetUnfolderBase]: 818/1438 cut-off events. [2025-03-08 17:23:47,223 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2025-03-08 17:23:47,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2754 conditions, 1438 events. 818/1438 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6507 event pairs, 332 based on Foata normal form. 57/1336 useless extension candidates. Maximal degree in co-relation 2675. Up to 811 conditions per place. [2025-03-08 17:23:47,237 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 75 selfloop transitions, 13 changer transitions 24/121 dead transitions. [2025-03-08 17:23:47,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 121 transitions, 484 flow [2025-03-08 17:23:47,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:23:47,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:23:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2025-03-08 17:23:47,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5048076923076923 [2025-03-08 17:23:47,248 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 105 flow. Second operand 8 states and 210 transitions. [2025-03-08 17:23:47,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 121 transitions, 484 flow [2025-03-08 17:23:47,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 121 transitions, 476 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-08 17:23:47,259 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 167 flow [2025-03-08 17:23:47,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=167, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2025-03-08 17:23:47,264 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2025-03-08 17:23:47,266 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 167 flow [2025-03-08 17:23:47,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2025-03-08 17:23:47,266 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:23:47,266 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:23:47,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:23:47,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:23:47,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:23:47,268 INFO L85 PathProgramCache]: Analyzing trace with hash 16289508, now seen corresponding path program 1 times [2025-03-08 17:23:47,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:23:47,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454874339] [2025-03-08 17:23:47,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:23:47,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:23:47,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 17:23:47,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:23:47,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:23:47,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:23:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:23:47,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:23:47,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454874339] [2025-03-08 17:23:47,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454874339] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:23:47,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:23:47,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:23:47,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824519426] [2025-03-08 17:23:47,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:23:47,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:23:47,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:23:47,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:23:47,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:23:47,804 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2025-03-08 17:23:47,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2025-03-08 17:23:47,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:23:47,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2025-03-08 17:23:47,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:23:48,312 INFO L124 PetriNetUnfolderBase]: 1019/1781 cut-off events. [2025-03-08 17:23:48,312 INFO L125 PetriNetUnfolderBase]: For 552/556 co-relation queries the response was YES. [2025-03-08 17:23:48,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4094 conditions, 1781 events. 1019/1781 cut-off events. For 552/556 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8675 event pairs, 356 based on Foata normal form. 0/1694 useless extension candidates. Maximal degree in co-relation 3904. Up to 826 conditions per place. [2025-03-08 17:23:48,320 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 65 selfloop transitions, 13 changer transitions 69/157 dead transitions. [2025-03-08 17:23:48,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 157 transitions, 793 flow [2025-03-08 17:23:48,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:23:48,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:23:48,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2025-03-08 17:23:48,323 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5144230769230769 [2025-03-08 17:23:48,324 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 167 flow. Second operand 8 states and 214 transitions. [2025-03-08 17:23:48,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 157 transitions, 793 flow [2025-03-08 17:23:48,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 157 transitions, 793 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 17:23:48,333 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 231 flow [2025-03-08 17:23:48,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=231, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2025-03-08 17:23:48,334 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 21 predicate places. [2025-03-08 17:23:48,334 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 231 flow [2025-03-08 17:23:48,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2025-03-08 17:23:48,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:23:48,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:23:48,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:23:48,336 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:23:48,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:23:48,337 INFO L85 PathProgramCache]: Analyzing trace with hash -508827190, now seen corresponding path program 1 times [2025-03-08 17:23:48,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:23:48,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380741037] [2025-03-08 17:23:48,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:23:48,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:23:48,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-08 17:23:48,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:23:48,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:23:48,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:23:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:23:50,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:23:50,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380741037] [2025-03-08 17:23:50,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380741037] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:23:50,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:23:50,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-08 17:23:50,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578968624] [2025-03-08 17:23:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:23:50,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 17:23:50,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:23:50,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 17:23:50,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2025-03-08 17:23:50,527 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2025-03-08 17:23:50,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 231 flow. Second operand has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 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) [2025-03-08 17:23:50,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:23:50,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2025-03-08 17:23:50,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:23:52,798 INFO L124 PetriNetUnfolderBase]: 1384/2606 cut-off events. [2025-03-08 17:23:52,798 INFO L125 PetriNetUnfolderBase]: For 2523/2523 co-relation queries the response was YES. [2025-03-08 17:23:52,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 2606 events. 1384/2606 cut-off events. For 2523/2523 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 15468 event pairs, 108 based on Foata normal form. 10/2616 useless extension candidates. Maximal degree in co-relation 7352. Up to 664 conditions per place. [2025-03-08 17:23:52,813 INFO L140 encePairwiseOnDemand]: 34/52 looper letters, 139 selfloop transitions, 35 changer transitions 89/271 dead transitions. [2025-03-08 17:23:52,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 271 transitions, 1766 flow [2025-03-08 17:23:52,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 17:23:52,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-08 17:23:52,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 395 transitions. [2025-03-08 17:23:52,819 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.422008547008547 [2025-03-08 17:23:52,819 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 231 flow. Second operand 18 states and 395 transitions. [2025-03-08 17:23:52,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 271 transitions, 1766 flow [2025-03-08 17:23:52,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 271 transitions, 1738 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-03-08 17:23:52,838 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 600 flow [2025-03-08 17:23:52,839 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=600, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2025-03-08 17:23:52,839 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 43 predicate places. [2025-03-08 17:23:52,839 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 600 flow [2025-03-08 17:23:52,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 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) [2025-03-08 17:23:52,840 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:23:52,840 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:23:52,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:23:52,840 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:23:52,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:23:52,841 INFO L85 PathProgramCache]: Analyzing trace with hash -869209816, now seen corresponding path program 2 times [2025-03-08 17:23:52,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:23:52,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808144331] [2025-03-08 17:23:52,841 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:23:52,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:23:52,874 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-03-08 17:23:52,995 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:23:52,995 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:23:52,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:23:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:23:55,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:23:55,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808144331] [2025-03-08 17:23:55,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808144331] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:23:55,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:23:55,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 17:23:55,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928599436] [2025-03-08 17:23:55,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:23:55,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 17:23:55,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:23:55,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 17:23:55,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-03-08 17:23:55,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2025-03-08 17:23:55,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 600 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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) [2025-03-08 17:23:55,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:23:55,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2025-03-08 17:23:55,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:23:57,914 INFO L124 PetriNetUnfolderBase]: 3288/6124 cut-off events. [2025-03-08 17:23:57,914 INFO L125 PetriNetUnfolderBase]: For 16256/16272 co-relation queries the response was YES. [2025-03-08 17:23:57,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22057 conditions, 6124 events. 3288/6124 cut-off events. For 16256/16272 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 43400 event pairs, 241 based on Foata normal form. 26/6150 useless extension candidates. Maximal degree in co-relation 17694. Up to 1486 conditions per place. [2025-03-08 17:23:57,949 INFO L140 encePairwiseOnDemand]: 32/52 looper letters, 214 selfloop transitions, 101 changer transitions 109/432 dead transitions. [2025-03-08 17:23:57,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 432 transitions, 3917 flow [2025-03-08 17:23:57,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 17:23:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-08 17:23:57,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 535 transitions. [2025-03-08 17:23:57,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4115384615384615 [2025-03-08 17:23:57,952 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 600 flow. Second operand 25 states and 535 transitions. [2025-03-08 17:23:57,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 432 transitions, 3917 flow [2025-03-08 17:23:58,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 432 transitions, 3780 flow, removed 43 selfloop flow, removed 5 redundant places. [2025-03-08 17:23:58,020 INFO L231 Difference]: Finished difference. Result has 118 places, 172 transitions, 1820 flow [2025-03-08 17:23:58,020 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1820, PETRI_PLACES=118, PETRI_TRANSITIONS=172} [2025-03-08 17:23:58,021 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 73 predicate places. [2025-03-08 17:23:58,021 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 172 transitions, 1820 flow [2025-03-08 17:23:58,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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) [2025-03-08 17:23:58,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:23:58,021 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:23:58,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:23:58,021 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:23:58,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:23:58,022 INFO L85 PathProgramCache]: Analyzing trace with hash -785267414, now seen corresponding path program 3 times [2025-03-08 17:23:58,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:23:58,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369924144] [2025-03-08 17:23:58,022 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:23:58,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:23:58,064 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 1 equivalence classes. [2025-03-08 17:23:58,137 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:23:58,137 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:23:58,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:23:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:23:59,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:23:59,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369924144] [2025-03-08 17:23:59,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369924144] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:23:59,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:23:59,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 17:23:59,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051545761] [2025-03-08 17:23:59,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:23:59,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 17:23:59,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:23:59,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 17:23:59,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-08 17:23:59,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2025-03-08 17:23:59,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 172 transitions, 1820 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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) [2025-03-08 17:23:59,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:23:59,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2025-03-08 17:23:59,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:24:01,760 INFO L124 PetriNetUnfolderBase]: 3847/7218 cut-off events. [2025-03-08 17:24:01,761 INFO L125 PetriNetUnfolderBase]: For 36019/36035 co-relation queries the response was YES. [2025-03-08 17:24:01,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31215 conditions, 7218 events. 3847/7218 cut-off events. For 36019/36035 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53572 event pairs, 241 based on Foata normal form. 34/7252 useless extension candidates. Maximal degree in co-relation 30953. Up to 1436 conditions per place. [2025-03-08 17:24:01,815 INFO L140 encePairwiseOnDemand]: 35/52 looper letters, 226 selfloop transitions, 123 changer transitions 101/458 dead transitions. [2025-03-08 17:24:01,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 458 transitions, 5156 flow [2025-03-08 17:24:01,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-08 17:24:01,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-03-08 17:24:01,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 440 transitions. [2025-03-08 17:24:01,817 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2025-03-08 17:24:01,817 INFO L175 Difference]: Start difference. First operand has 118 places, 172 transitions, 1820 flow. Second operand 20 states and 440 transitions. [2025-03-08 17:24:01,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 458 transitions, 5156 flow [2025-03-08 17:24:01,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 458 transitions, 5060 flow, removed 47 selfloop flow, removed 3 redundant places. [2025-03-08 17:24:01,986 INFO L231 Difference]: Finished difference. Result has 145 places, 212 transitions, 2769 flow [2025-03-08 17:24:01,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2769, PETRI_PLACES=145, PETRI_TRANSITIONS=212} [2025-03-08 17:24:01,987 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 100 predicate places. [2025-03-08 17:24:01,987 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 212 transitions, 2769 flow [2025-03-08 17:24:01,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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) [2025-03-08 17:24:01,987 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:24:01,988 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:24:01,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:24:01,988 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:24:01,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:24:01,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1386417610, now seen corresponding path program 4 times [2025-03-08 17:24:01,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:24:01,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641059868] [2025-03-08 17:24:01,988 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:24:01,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:24:02,028 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-03-08 17:24:02,083 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:24:02,083 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:24:02,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:24:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:24:03,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:24:03,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641059868] [2025-03-08 17:24:03,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641059868] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:24:03,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:24:03,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-08 17:24:03,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823796984] [2025-03-08 17:24:03,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:24:03,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 17:24:03,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:24:03,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 17:24:03,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-03-08 17:24:03,926 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2025-03-08 17:24:03,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 212 transitions, 2769 flow. Second operand has 15 states, 15 states have (on average 11.333333333333334) internal successors, (170), 15 states have internal predecessors, (170), 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) [2025-03-08 17:24:03,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:24:03,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2025-03-08 17:24:03,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:24:07,001 INFO L124 PetriNetUnfolderBase]: 4722/9028 cut-off events. [2025-03-08 17:24:07,001 INFO L125 PetriNetUnfolderBase]: For 71865/71873 co-relation queries the response was YES. [2025-03-08 17:24:07,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44330 conditions, 9028 events. 4722/9028 cut-off events. For 71865/71873 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 71432 event pairs, 443 based on Foata normal form. 14/9038 useless extension candidates. Maximal degree in co-relation 44029. Up to 2591 conditions per place. [2025-03-08 17:24:07,081 INFO L140 encePairwiseOnDemand]: 31/52 looper letters, 294 selfloop transitions, 180 changer transitions 85/573 dead transitions. [2025-03-08 17:24:07,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 573 transitions, 8077 flow [2025-03-08 17:24:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-08 17:24:07,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-08 17:24:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 495 transitions. [2025-03-08 17:24:07,083 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2025-03-08 17:24:07,084 INFO L175 Difference]: Start difference. First operand has 145 places, 212 transitions, 2769 flow. Second operand 22 states and 495 transitions. [2025-03-08 17:24:07,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 573 transitions, 8077 flow [2025-03-08 17:24:07,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 573 transitions, 7687 flow, removed 109 selfloop flow, removed 5 redundant places. [2025-03-08 17:24:07,431 INFO L231 Difference]: Finished difference. Result has 176 places, 321 transitions, 4983 flow [2025-03-08 17:24:07,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4983, PETRI_PLACES=176, PETRI_TRANSITIONS=321} [2025-03-08 17:24:07,432 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 131 predicate places. [2025-03-08 17:24:07,432 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 321 transitions, 4983 flow [2025-03-08 17:24:07,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.333333333333334) internal successors, (170), 15 states have internal predecessors, (170), 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) [2025-03-08 17:24:07,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:24:07,433 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:24:07,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:24:07,433 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:24:07,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:24:07,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2036821566, now seen corresponding path program 1 times [2025-03-08 17:24:07,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:24:07,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638180711] [2025-03-08 17:24:07,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:24:07,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:24:07,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-08 17:24:07,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:24:07,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:24:07,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:24:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:24:09,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:24:09,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638180711] [2025-03-08 17:24:09,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638180711] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:24:09,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:24:09,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 17:24:09,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317182645] [2025-03-08 17:24:09,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:24:09,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 17:24:09,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:24:09,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 17:24:09,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-08 17:24:09,415 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2025-03-08 17:24:09,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 321 transitions, 4983 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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) [2025-03-08 17:24:09,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:24:09,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2025-03-08 17:24:09,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:24:12,485 INFO L124 PetriNetUnfolderBase]: 4847/9288 cut-off events. [2025-03-08 17:24:12,485 INFO L125 PetriNetUnfolderBase]: For 94970/95022 co-relation queries the response was YES. [2025-03-08 17:24:12,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49463 conditions, 9288 events. 4847/9288 cut-off events. For 94970/95022 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 73685 event pairs, 222 based on Foata normal form. 43/9323 useless extension candidates. Maximal degree in co-relation 49126. Up to 2854 conditions per place. [2025-03-08 17:24:12,563 INFO L140 encePairwiseOnDemand]: 33/52 looper letters, 279 selfloop transitions, 230 changer transitions 148/673 dead transitions. [2025-03-08 17:24:12,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 673 transitions, 10723 flow [2025-03-08 17:24:12,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-08 17:24:12,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-08 17:24:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 452 transitions. [2025-03-08 17:24:12,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3951048951048951 [2025-03-08 17:24:12,568 INFO L175 Difference]: Start difference. First operand has 176 places, 321 transitions, 4983 flow. Second operand 22 states and 452 transitions. [2025-03-08 17:24:12,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 673 transitions, 10723 flow [2025-03-08 17:24:13,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 673 transitions, 10208 flow, removed 252 selfloop flow, removed 5 redundant places. [2025-03-08 17:24:13,050 INFO L231 Difference]: Finished difference. Result has 201 places, 408 transitions, 6820 flow [2025-03-08 17:24:13,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4712, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6820, PETRI_PLACES=201, PETRI_TRANSITIONS=408} [2025-03-08 17:24:13,051 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 156 predicate places. [2025-03-08 17:24:13,051 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 408 transitions, 6820 flow [2025-03-08 17:24:13,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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) [2025-03-08 17:24:13,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:24:13,052 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:24:13,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:24:13,052 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:24:13,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:24:13,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2106865056, now seen corresponding path program 5 times [2025-03-08 17:24:13,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:24:13,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657739927] [2025-03-08 17:24:13,053 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:24:13,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:24:13,081 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-03-08 17:24:13,108 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:24:13,108 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:24:13,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:24:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:24:14,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:24:14,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657739927] [2025-03-08 17:24:14,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657739927] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:24:14,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:24:14,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-08 17:24:14,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311846888] [2025-03-08 17:24:14,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:24:14,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 17:24:14,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:24:14,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 17:24:14,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-03-08 17:24:14,259 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2025-03-08 17:24:14,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 408 transitions, 6820 flow. Second operand has 13 states, 13 states have (on average 11.538461538461538) internal successors, (150), 13 states have internal predecessors, (150), 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) [2025-03-08 17:24:14,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:24:14,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2025-03-08 17:24:14,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:24:17,155 INFO L124 PetriNetUnfolderBase]: 4826/9333 cut-off events. [2025-03-08 17:24:17,155 INFO L125 PetriNetUnfolderBase]: For 104850/104918 co-relation queries the response was YES. [2025-03-08 17:24:17,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52973 conditions, 9333 events. 4826/9333 cut-off events. For 104850/104918 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 74230 event pairs, 442 based on Foata normal form. 58/9389 useless extension candidates. Maximal degree in co-relation 52614. Up to 2360 conditions per place. [2025-03-08 17:24:17,255 INFO L140 encePairwiseOnDemand]: 32/52 looper letters, 382 selfloop transitions, 282 changer transitions 87/763 dead transitions. [2025-03-08 17:24:17,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 763 transitions, 13170 flow [2025-03-08 17:24:17,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 17:24:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-08 17:24:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 466 transitions. [2025-03-08 17:24:17,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4267399267399267 [2025-03-08 17:24:17,259 INFO L175 Difference]: Start difference. First operand has 201 places, 408 transitions, 6820 flow. Second operand 21 states and 466 transitions. [2025-03-08 17:24:17,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 763 transitions, 13170 flow [2025-03-08 17:24:17,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 763 transitions, 12333 flow, removed 334 selfloop flow, removed 9 redundant places. [2025-03-08 17:24:17,959 INFO L231 Difference]: Finished difference. Result has 221 places, 521 transitions, 9495 flow [2025-03-08 17:24:17,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=6404, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9495, PETRI_PLACES=221, PETRI_TRANSITIONS=521} [2025-03-08 17:24:17,960 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 176 predicate places. [2025-03-08 17:24:17,960 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 521 transitions, 9495 flow [2025-03-08 17:24:17,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.538461538461538) internal successors, (150), 13 states have internal predecessors, (150), 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) [2025-03-08 17:24:17,960 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:24:17,960 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:24:17,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 17:24:17,961 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:24:17,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:24:17,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1731641976, now seen corresponding path program 2 times [2025-03-08 17:24:17,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:24:17,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376268528] [2025-03-08 17:24:17,961 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:24:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:24:17,989 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-03-08 17:24:18,020 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:24:18,021 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:24:18,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:24:20,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:24:20,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:24:20,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376268528] [2025-03-08 17:24:20,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376268528] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:24:20,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:24:20,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-08 17:24:20,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450957291] [2025-03-08 17:24:20,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:24:20,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-08 17:24:20,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:24:20,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-08 17:24:20,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2025-03-08 17:24:20,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2025-03-08 17:24:20,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 521 transitions, 9495 flow. Second operand has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 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) [2025-03-08 17:24:20,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:24:20,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2025-03-08 17:24:20,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:24:24,224 INFO L124 PetriNetUnfolderBase]: 5115/9811 cut-off events. [2025-03-08 17:24:24,224 INFO L125 PetriNetUnfolderBase]: For 121495/121517 co-relation queries the response was YES. [2025-03-08 17:24:24,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57925 conditions, 9811 events. 5115/9811 cut-off events. For 121495/121517 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 78251 event pairs, 215 based on Foata normal form. 43/9849 useless extension candidates. Maximal degree in co-relation 57661. Up to 3228 conditions per place. [2025-03-08 17:24:24,456 INFO L140 encePairwiseOnDemand]: 31/52 looper letters, 319 selfloop transitions, 332 changer transitions 97/762 dead transitions. [2025-03-08 17:24:24,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 762 transitions, 13924 flow [2025-03-08 17:24:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-08 17:24:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-03-08 17:24:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 419 transitions. [2025-03-08 17:24:24,458 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3503344481605351 [2025-03-08 17:24:24,458 INFO L175 Difference]: Start difference. First operand has 221 places, 521 transitions, 9495 flow. Second operand 23 states and 419 transitions. [2025-03-08 17:24:24,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 762 transitions, 13924 flow [2025-03-08 17:24:25,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 762 transitions, 13615 flow, removed 88 selfloop flow, removed 5 redundant places. [2025-03-08 17:24:25,380 INFO L231 Difference]: Finished difference. Result has 244 places, 554 transitions, 10627 flow [2025-03-08 17:24:25,381 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=9256, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=10627, PETRI_PLACES=244, PETRI_TRANSITIONS=554} [2025-03-08 17:24:25,382 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 199 predicate places. [2025-03-08 17:24:25,382 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 554 transitions, 10627 flow [2025-03-08 17:24:25,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 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) [2025-03-08 17:24:25,382 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:24:25,382 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:24:25,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 17:24:25,383 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:24:25,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:24:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash 881747556, now seen corresponding path program 3 times [2025-03-08 17:24:25,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:24:25,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362090357] [2025-03-08 17:24:25,387 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:24:25,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:24:25,433 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 1 equivalence classes. [2025-03-08 17:24:25,483 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:24:25,483 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:24:25,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:24:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:24:26,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:24:26,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362090357] [2025-03-08 17:24:26,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362090357] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:24:26,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:24:26,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 17:24:26,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310804477] [2025-03-08 17:24:26,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:24:26,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 17:24:26,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:24:26,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 17:24:26,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-08 17:24:26,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2025-03-08 17:24:26,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 554 transitions, 10627 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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) [2025-03-08 17:24:26,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:24:26,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2025-03-08 17:24:26,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:24:29,796 INFO L124 PetriNetUnfolderBase]: 5007/9699 cut-off events. [2025-03-08 17:24:29,796 INFO L125 PetriNetUnfolderBase]: For 131233/131267 co-relation queries the response was YES. [2025-03-08 17:24:29,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59408 conditions, 9699 events. 5007/9699 cut-off events. For 131233/131267 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 78131 event pairs, 234 based on Foata normal form. 53/9745 useless extension candidates. Maximal degree in co-relation 59139. Up to 1989 conditions per place. [2025-03-08 17:24:29,904 INFO L140 encePairwiseOnDemand]: 33/52 looper letters, 287 selfloop transitions, 429 changer transitions 104/839 dead transitions. [2025-03-08 17:24:29,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 839 transitions, 16144 flow [2025-03-08 17:24:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 17:24:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-08 17:24:29,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 477 transitions. [2025-03-08 17:24:29,906 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38221153846153844 [2025-03-08 17:24:29,906 INFO L175 Difference]: Start difference. First operand has 244 places, 554 transitions, 10627 flow. Second operand 24 states and 477 transitions. [2025-03-08 17:24:29,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 839 transitions, 16144 flow [2025-03-08 17:24:30,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 839 transitions, 15951 flow, removed 75 selfloop flow, removed 8 redundant places. [2025-03-08 17:24:30,895 INFO L231 Difference]: Finished difference. Result has 265 places, 613 transitions, 12752 flow [2025-03-08 17:24:30,896 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=10498, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=12752, PETRI_PLACES=265, PETRI_TRANSITIONS=613} [2025-03-08 17:24:30,896 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 220 predicate places. [2025-03-08 17:24:30,896 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 613 transitions, 12752 flow [2025-03-08 17:24:30,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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) [2025-03-08 17:24:30,897 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:24:30,897 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:24:30,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 17:24:30,897 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:24:30,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:24:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1172965194, now seen corresponding path program 4 times [2025-03-08 17:24:30,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:24:30,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771168764] [2025-03-08 17:24:30,898 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:24:30,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:24:30,922 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-03-08 17:24:30,957 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:24:30,957 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:24:30,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:24:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:24:34,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:24:34,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771168764] [2025-03-08 17:24:34,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771168764] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:24:34,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:24:34,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-08 17:24:34,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278090474] [2025-03-08 17:24:34,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:24:34,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 17:24:34,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:24:34,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 17:24:34,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2025-03-08 17:24:34,549 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2025-03-08 17:24:34,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 613 transitions, 12752 flow. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 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) [2025-03-08 17:24:34,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:24:34,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2025-03-08 17:24:34,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:24:40,038 INFO L124 PetriNetUnfolderBase]: 5167/10095 cut-off events. [2025-03-08 17:24:40,038 INFO L125 PetriNetUnfolderBase]: For 152797/152843 co-relation queries the response was YES. [2025-03-08 17:24:40,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63725 conditions, 10095 events. 5167/10095 cut-off events. For 152797/152843 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 82628 event pairs, 205 based on Foata normal form. 77/10165 useless extension candidates. Maximal degree in co-relation 63441. Up to 1802 conditions per place. [2025-03-08 17:24:40,172 INFO L140 encePairwiseOnDemand]: 32/52 looper letters, 286 selfloop transitions, 502 changer transitions 213/1023 dead transitions. [2025-03-08 17:24:40,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1023 transitions, 20430 flow [2025-03-08 17:24:40,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-08 17:24:40,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-03-08 17:24:40,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 693 transitions. [2025-03-08 17:24:40,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3601871101871102 [2025-03-08 17:24:40,174 INFO L175 Difference]: Start difference. First operand has 265 places, 613 transitions, 12752 flow. Second operand 37 states and 693 transitions. [2025-03-08 17:24:40,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1023 transitions, 20430 flow [2025-03-08 17:24:41,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 1023 transitions, 19774 flow, removed 155 selfloop flow, removed 7 redundant places. [2025-03-08 17:24:41,223 INFO L231 Difference]: Finished difference. Result has 301 places, 676 transitions, 14650 flow [2025-03-08 17:24:41,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=12254, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=442, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=14650, PETRI_PLACES=301, PETRI_TRANSITIONS=676} [2025-03-08 17:24:41,227 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 256 predicate places. [2025-03-08 17:24:41,227 INFO L471 AbstractCegarLoop]: Abstraction has has 301 places, 676 transitions, 14650 flow [2025-03-08 17:24:41,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 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) [2025-03-08 17:24:41,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:24:41,228 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:24:41,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 17:24:41,228 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:24:41,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:24:41,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1051491364, now seen corresponding path program 6 times [2025-03-08 17:24:41,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:24:41,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273123248] [2025-03-08 17:24:41,228 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:24:41,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:24:41,260 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 24 statements into 1 equivalence classes. [2025-03-08 17:24:41,371 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:24:41,372 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-08 17:24:41,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:24:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:24:42,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:24:42,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273123248] [2025-03-08 17:24:42,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273123248] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:24:42,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:24:42,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 17:24:42,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241688192] [2025-03-08 17:24:42,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:24:42,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 17:24:42,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:24:42,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 17:24:42,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-08 17:24:42,563 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2025-03-08 17:24:42,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 676 transitions, 14650 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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) [2025-03-08 17:24:42,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:24:42,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2025-03-08 17:24:42,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:24:51,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-08 17:24:52,618 INFO L124 PetriNetUnfolderBase]: 5312/10443 cut-off events. [2025-03-08 17:24:52,619 INFO L125 PetriNetUnfolderBase]: For 176244/176286 co-relation queries the response was YES. [2025-03-08 17:24:52,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67890 conditions, 10443 events. 5312/10443 cut-off events. For 176244/176286 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 85968 event pairs, 335 based on Foata normal form. 60/10501 useless extension candidates. Maximal degree in co-relation 67710. Up to 1912 conditions per place. [2025-03-08 17:24:52,737 INFO L140 encePairwiseOnDemand]: 33/52 looper letters, 402 selfloop transitions, 547 changer transitions 158/1127 dead transitions. [2025-03-08 17:24:52,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 1127 transitions, 24279 flow [2025-03-08 17:24:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-08 17:24:52,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-03-08 17:24:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 601 transitions. [2025-03-08 17:24:52,739 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41277472527472525 [2025-03-08 17:24:52,739 INFO L175 Difference]: Start difference. First operand has 301 places, 676 transitions, 14650 flow. Second operand 28 states and 601 transitions. [2025-03-08 17:24:52,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 1127 transitions, 24279 flow [2025-03-08 17:24:54,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 1127 transitions, 22605 flow, removed 314 selfloop flow, removed 27 redundant places. [2025-03-08 17:24:54,226 INFO L231 Difference]: Finished difference. Result has 317 places, 812 transitions, 18693 flow [2025-03-08 17:24:54,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=13680, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=18693, PETRI_PLACES=317, PETRI_TRANSITIONS=812} [2025-03-08 17:24:54,227 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 272 predicate places. [2025-03-08 17:24:54,227 INFO L471 AbstractCegarLoop]: Abstraction has has 317 places, 812 transitions, 18693 flow [2025-03-08 17:24:54,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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) [2025-03-08 17:24:54,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:24:54,227 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:24:54,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 17:24:54,227 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:24:54,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:24:54,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1527821340, now seen corresponding path program 5 times [2025-03-08 17:24:54,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:24:54,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670626089] [2025-03-08 17:24:54,228 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:24:54,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:24:54,252 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-03-08 17:24:54,272 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:24:54,273 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:24:54,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:24:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:24:55,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:24:55,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670626089] [2025-03-08 17:24:55,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670626089] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:24:55,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:24:55,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 17:24:55,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160493941] [2025-03-08 17:24:55,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:24:55,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 17:24:55,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:24:55,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 17:24:55,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-03-08 17:24:55,729 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2025-03-08 17:24:55,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 812 transitions, 18693 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 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) [2025-03-08 17:24:55,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:24:55,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2025-03-08 17:24:55,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand