./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i --full-output --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --traceabstraction.partial.order.reduction.in.concurrent.analysis SLEEP_NEW_STATES --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6f232940 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3cf9a63e6b69549a73ec0cdf90051f21ab19a39a485979f4709a706d3ba6e298 --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --traceabstraction.partial.order.reduction.in.concurrent.analysis SLEEP_NEW_STATES --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6f23294-m [2025-03-19 18:18:53,410 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-19 18:18:53,487 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-03-19 18:18:53,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-19 18:18:53,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-19 18:18:53,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-19 18:18:53,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-19 18:18:53,514 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-19 18:18:53,514 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-19 18:18:53,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-19 18:18:53,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-19 18:18:53,515 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-19 18:18:53,515 INFO L153 SettingsManager]: * Use SBE=true [2025-03-19 18:18:53,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-19 18:18:53,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-19 18:18:53,516 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-19 18:18:53,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-19 18:18:53,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-19 18:18:53,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-19 18:18:53,516 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-19 18:18:53,517 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-19 18:18:53,517 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-19 18:18:53,517 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-19 18:18:53,517 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-19 18:18:53,517 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-19 18:18:53,517 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-19 18:18:53,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-03-19 18:18:53,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-19 18:18:53,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-19 18:18:53,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-19 18:18:53,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-19 18:18:53,518 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-19 18:18:53,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-19 18:18:53,518 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-19 18:18:53,518 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-03-19 18:18:53,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-19 18:18:53,518 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-19 18:18:53,518 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-03-19 18:18:53,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-19 18:18:53,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-03-19 18:18:53,518 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-03-19 18:18:53,518 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-03-19 18:18:53,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/UGemCutter-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 -> GemCutter 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 -> 3cf9a63e6b69549a73ec0cdf90051f21ab19a39a485979f4709a706d3ba6e298 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> NONE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Partial Order Reduction in concurrent analysis -> SLEEP_NEW_STATES [2025-03-19 18:18:53,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-19 18:18:53,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-19 18:18:53,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-19 18:18:53,755 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-19 18:18:53,757 INFO L274 PluginConnector]: CDTParser initialized [2025-03-19 18:18:53,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2025-03-19 18:18:55,078 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/1391673eb/a94416b28ca44fc99f17a4df1067b99e/FLAGbe1570af6 [2025-03-19 18:18:55,450 INFO L389 CDTParser]: Found 1 translation units. [2025-03-19 18:18:55,451 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2025-03-19 18:18:55,487 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/1391673eb/a94416b28ca44fc99f17a4df1067b99e/FLAGbe1570af6 [2025-03-19 18:18:57,180 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/1391673eb/a94416b28ca44fc99f17a4df1067b99e [2025-03-19 18:18:57,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-19 18:18:57,183 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-19 18:18:57,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-19 18:18:57,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-19 18:18:57,187 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-19 18:18:57,187 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:18:57" (1/1) ... [2025-03-19 18:18:57,188 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@622a1cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:18:57, skipping insertion in model container [2025-03-19 18:18:57,188 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 06:18:57" (1/1) ... [2025-03-19 18:18:57,260 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-19 18:18:57,544 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_nvram_unlocked_ioctl.i[5520,5533] [2025-03-19 18:18:59,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-19 18:18:59,991 INFO L200 MainTranslator]: Completed pre-run [2025-03-19 18:19:00,010 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_nvram_unlocked_ioctl.i[5520,5533] [2025-03-19 18:19:00,100 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] [2025-03-19 18:19:00,101 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] [2025-03-19 18:19:00,101 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] [2025-03-19 18:19:00,102 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] [2025-03-19 18:19:00,210 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile("ud2"); [5817] [2025-03-19 18:19:00,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-19 18:19:00,556 INFO L204 MainTranslator]: Completed translation [2025-03-19 18:19:00,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:19:00 WrapperNode [2025-03-19 18:19:00,557 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-19 18:19:00,558 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-19 18:19:00,558 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-19 18:19:00,558 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-19 18:19:00,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:19:00" (1/1) ... [2025-03-19 18:19:00,608 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:19:00" (1/1) ... [2025-03-19 18:19:00,648 INFO L138 Inliner]: procedures = 1354, calls = 1463, calls flagged for inlining = 352, calls inlined = 19, statements flattened = 341 [2025-03-19 18:19:00,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-19 18:19:00,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-19 18:19:00,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-19 18:19:00,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-19 18:19:00,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:19:00" (1/1) ... [2025-03-19 18:19:00,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:19:00" (1/1) ... [2025-03-19 18:19:00,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:19:00" (1/1) ... [2025-03-19 18:19:00,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:19:00" (1/1) ... [2025-03-19 18:19:00,698 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:19:00" (1/1) ... [2025-03-19 18:19:00,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:19:00" (1/1) ... [2025-03-19 18:19:00,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:19:00" (1/1) ... [2025-03-19 18:19:00,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:19:00" (1/1) ... [2025-03-19 18:19:00,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:19:00" (1/1) ... [2025-03-19 18:19:00,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-19 18:19:00,707 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-03-19 18:19:00,707 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-03-19 18:19:00,707 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-03-19 18:19:00,708 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:19:00" (1/1) ... [2025-03-19 18:19:00,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-19 18:19:00,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 18:19:00,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2025-03-19 18:19:00,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2025-03-19 18:19:00,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-19 18:19:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-19 18:19:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_nvram_unlocked_ioctl [2025-03-19 18:19:00,752 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_nvram_unlocked_ioctl [2025-03-19 18:19:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-19 18:19:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-19 18:19:00,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-19 18:19:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-19 18:19:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram [2025-03-19 18:19:00,752 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram [2025-03-19 18:19:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-19 18:19:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-19 18:19:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2025-03-19 18:19:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-19 18:19:00,754 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-19 18:19:01,058 INFO L234 CfgBuilder]: Building ICFG [2025-03-19 18:19:01,059 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-19 18:19:01,394 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-19 18:19:01,395 INFO L283 CfgBuilder]: Performing block encoding [2025-03-19 18:19:01,737 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-19 18:19:01,737 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-19 18:19:01,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:19:01 BoogieIcfgContainer [2025-03-19 18:19:01,738 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-03-19 18:19:01,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-19 18:19:01,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-19 18:19:01,743 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-19 18:19:01,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 06:18:57" (1/3) ... [2025-03-19 18:19:01,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b762b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:19:01, skipping insertion in model container [2025-03-19 18:19:01,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 06:19:00" (2/3) ... [2025-03-19 18:19:01,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b762b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 06:19:01, skipping insertion in model container [2025-03-19 18:19:01,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:19:01" (3/3) ... [2025-03-19 18:19:01,747 INFO L128 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2025-03-19 18:19:01,757 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-19 18:19:01,760 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i that has 3 procedures, 30 locations, 34 edges, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-19 18:19:01,760 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-19 18:19:01,815 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-19 18:19:01,846 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-19 18:19:01,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-03-19 18:19:01,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 18:19:01,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-03-19 18:19:01,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-03-19 18:19:02,035 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-03-19 18:19:02,041 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-03-19 18:19:02,048 INFO L340 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=PARTIAL_ORDER_FA, 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;@62514b58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-19 18:19:02,048 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-19 18:19:02,067 INFO L791 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2025-03-19 18:19:02,067 INFO L791 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2025-03-19 18:19:02,070 INFO L422 BasicCegarLoop]: Path program histogram: [] [2025-03-19 18:19:02,071 INFO L320 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE (1/2) [2025-03-19 18:19:02,073 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-19 18:19:02,074 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-03-19 18:19:02,074 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == whoop_wrapper_read_nvramThread1of1ForFork0 ======== [2025-03-19 18:19:02,074 INFO L340 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=PARTIAL_ORDER_FA, 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;@62514b58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-19 18:19:02,075 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-19 18:19:02,330 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-19 18:19:02,333 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 18:19:02,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1729450105, now seen corresponding path program 1 times [2025-03-19 18:19:02,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-19 18:19:02,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336658617] [2025-03-19 18:19:02,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 18:19:02,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-19 18:19:02,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-19 18:19:02,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-19 18:19:02,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 18:19:02,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-19 18:19:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-19 18:19:02,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-19 18:19:02,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336658617] [2025-03-19 18:19:02,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336658617] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-19 18:19:02,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-19 18:19:02,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-19 18:19:02,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373526320] [2025-03-19 18:19:02,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-19 18:19:02,919 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-19 18:19:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-19 18:19:02,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-19 18:19:02,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-19 18:19:02,932 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:19:02,932 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-19 18:19:02,937 INFO L481 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2025-03-19 18:19:02,937 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-19 18:19:03,151 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-19 18:19:03,151 INFO L791 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-19 18:19:03,152 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-19 18:19:03,152 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-19 18:19:03,152 INFO L320 ceAbstractionStarter]: Result for error location whoop_wrapper_read_nvramThread1of1ForFork0 was SAFE (2/2) [2025-03-19 18:19:03,153 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-19 18:19:03,153 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-03-19 18:19:03,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-03-19 18:19:03,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 06:19:03 BasicIcfg [2025-03-19 18:19:03,164 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-19 18:19:03,164 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-19 18:19:03,164 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-19 18:19:03,165 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-19 18:19:03,165 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 06:19:01" (3/4) ... [2025-03-19 18:19:03,166 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-19 18:19:03,170 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure whoop_wrapper_read_nvram [2025-03-19 18:19:03,170 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure whoop_wrapper_nvram_unlocked_ioctl [2025-03-19 18:19:03,177 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 162 nodes and edges [2025-03-19 18:19:03,179 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 70 nodes and edges [2025-03-19 18:19:03,180 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2025-03-19 18:19:03,180 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-03-19 18:19:03,180 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-19 18:19:03,181 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-19 18:19:03,246 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2025-03-19 18:19:03,247 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.yml [2025-03-19 18:19:03,247 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-19 18:19:03,248 INFO L158 Benchmark]: Toolchain (without parser) took 6064.21ms. Allocated memory was 83.9MB in the beginning and 352.3MB in the end (delta: 268.4MB). Free memory was 48.8MB in the beginning and 206.7MB in the end (delta: -157.9MB). Peak memory consumption was 108.2MB. Max. memory is 16.1GB. [2025-03-19 18:19:03,249 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 61.5MB in the beginning and 61.4MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-19 18:19:03,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3373.12ms. Allocated memory was 83.9MB in the beginning and 201.3MB in the end (delta: 117.4MB). Free memory was 48.8MB in the beginning and 44.5MB in the end (delta: 4.3MB). Peak memory consumption was 125.9MB. Max. memory is 16.1GB. [2025-03-19 18:19:03,249 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.79ms. Allocated memory is still 201.3MB. Free memory was 44.5MB in the beginning and 36.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-19 18:19:03,250 INFO L158 Benchmark]: Boogie Preprocessor took 57.94ms. Allocated memory is still 201.3MB. Free memory was 36.1MB in the beginning and 138.9MB in the end (delta: -102.8MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2025-03-19 18:19:03,250 INFO L158 Benchmark]: RCFGBuilder took 1030.79ms. Allocated memory is still 201.3MB. Free memory was 138.9MB in the beginning and 72.1MB in the end (delta: 66.7MB). Peak memory consumption was 116.6MB. Max. memory is 16.1GB. [2025-03-19 18:19:03,251 INFO L158 Benchmark]: TraceAbstraction took 1424.57ms. Allocated memory was 201.3MB in the beginning and 352.3MB in the end (delta: 151.0MB). Free memory was 70.2MB in the beginning and 215.7MB in the end (delta: -145.5MB). Peak memory consumption was 1.8MB. Max. memory is 16.1GB. [2025-03-19 18:19:03,251 INFO L158 Benchmark]: Witness Printer took 82.37ms. Allocated memory is still 352.3MB. Free memory was 214.9MB in the beginning and 206.7MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-19 18:19:03,252 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 61.5MB in the beginning and 61.4MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3373.12ms. Allocated memory was 83.9MB in the beginning and 201.3MB in the end (delta: 117.4MB). Free memory was 48.8MB in the beginning and 44.5MB in the end (delta: 4.3MB). Peak memory consumption was 125.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.79ms. Allocated memory is still 201.3MB. Free memory was 44.5MB in the beginning and 36.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.94ms. Allocated memory is still 201.3MB. Free memory was 36.1MB in the beginning and 138.9MB in the end (delta: -102.8MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * RCFGBuilder took 1030.79ms. Allocated memory is still 201.3MB. Free memory was 138.9MB in the beginning and 72.1MB in the end (delta: 66.7MB). Peak memory consumption was 116.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1424.57ms. Allocated memory was 201.3MB in the beginning and 352.3MB in the end (delta: 151.0MB). Free memory was 70.2MB in the beginning and 215.7MB in the end (delta: -145.5MB). Peak memory consumption was 1.8MB. Max. memory is 16.1GB. * Witness Printer took 82.37ms. Allocated memory is still 352.3MB. Free memory was 214.9MB in the beginning and 206.7MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 3228]: Unsoundness Warning Ignoring inline assembler instruction C: asm volatile ("" "xchg" "b %b0, %1\n" : "+q" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] - GenericResultAtLocation [Line: 3228]: Unsoundness Warning Ignoring inline assembler instruction C: asm volatile ("" "xchg" "w %w0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] - GenericResultAtLocation [Line: 3228]: Unsoundness Warning Ignoring inline assembler instruction C: asm volatile ("" "xchg" "l %0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] - GenericResultAtLocation [Line: 3228]: Unsoundness Warning Ignoring inline assembler instruction C: asm volatile ("" "xchg" "q %q0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3228] - GenericResultAtLocation [Line: 5817]: Unsoundness Warning Ignoring inline assembler instruction C: asm volatile("ud2"); [5817] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Partial order reduction statistics Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 42, independent: 30, independent conditional: 30, independent unconditional: 0, dependent: 12, dependent conditional: 12, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 30, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 26, independent: 26, independent conditional: 0, independent unconditional: 26, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 26, independent: 26, independent conditional: 0, independent unconditional: 26, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 30, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 26, unknown conditional: 0, unknown unconditional: 26] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Independence queries for same thread: 12 - StatisticsResult: Partial order reduction statistics Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 561, independent: 430, independent conditional: 430, independent unconditional: 0, dependent: 131, dependent conditional: 131, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 446, independent: 430, independent conditional: 0, independent unconditional: 430, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 123, independent: 117, independent conditional: 0, independent unconditional: 117, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 123, independent: 117, independent conditional: 0, independent unconditional: 117, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 6, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 6, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 320, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 320, dependent conditional: 0, dependent unconditional: 320, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 446, independent: 313, independent conditional: 0, independent unconditional: 313, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 123, unknown conditional: 0, unknown unconditional: 123] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Independence queries for same thread: 115 - PositiveResult [Line: 175]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 53 locations, 66 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: whoop_wrapper_read_nvramThread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 53 locations, 66 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.5s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-19 18:19:03,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE