./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/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 fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/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 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:29:11,843 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:29:11,923 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:29:11,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:29:11,927 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:29:11,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:29:11,954 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:29:11,955 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:29:11,956 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:29:11,957 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:29:11,957 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:29:11,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:29:11,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:29:11,958 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:29:11,958 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:29:11,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:29:11,961 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:29:11,961 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:29:11,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:29:11,962 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:29:11,962 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:29:11,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:29:11,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:29:11,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:29:11,966 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:29:11,966 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:29:11,967 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:29:11,967 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:29:11,967 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:29:11,967 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:29:11,968 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:29:11,968 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:29:11,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:29:11,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:29:11,969 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:29:11,969 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:29:11,969 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:29:11,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:29:11,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:29:11,970 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:29:11,970 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:29:11,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:29:11,971 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f16b4cfe031f645c2fa5eeec572887c79d8e9243727503d849e4b19e0e31cc63 [2024-11-20 09:29:12,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:29:12,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:29:12,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:29:12,266 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:29:12,267 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:29:12,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i [2024-11-20 09:29:13,774 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:29:14,324 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:29:14,326 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i [2024-11-20 09:29:14,379 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d77af8e84/e38b4a32e7bd463eb69dad602a85e6db/FLAG01996ce8e [2024-11-20 09:29:14,397 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d77af8e84/e38b4a32e7bd463eb69dad602a85e6db [2024-11-20 09:29:14,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:29:14,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:29:14,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:29:14,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:29:14,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:29:14,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:29:14" (1/1) ... [2024-11-20 09:29:14,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75261d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:14, skipping insertion in model container [2024-11-20 09:29:14,413 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:29:14" (1/1) ... [2024-11-20 09:29:14,518 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:29:15,014 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] [2024-11-20 09:29:20,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:29:20,914 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:29:20,936 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] [2024-11-20 09:29:21,030 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] [2024-11-20 09:29:21,033 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] [2024-11-20 09:29:21,033 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] [2024-11-20 09:29:21,033 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] [2024-11-20 09:29:21,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile("ud2"); [5817] [2024-11-20 09:29:21,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:29:21,749 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:29:21,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:21 WrapperNode [2024-11-20 09:29:21,750 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:29:21,751 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:29:21,751 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:29:21,751 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:29:21,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:21" (1/1) ... [2024-11-20 09:29:21,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:21" (1/1) ... [2024-11-20 09:29:21,951 INFO L138 Inliner]: procedures = 1354, calls = 1479, calls flagged for inlining = 352, calls inlined = 18, statements flattened = 402 [2024-11-20 09:29:21,952 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:29:21,953 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:29:21,953 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:29:21,953 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:29:21,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:21" (1/1) ... [2024-11-20 09:29:21,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:21" (1/1) ... [2024-11-20 09:29:21,973 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:21" (1/1) ... [2024-11-20 09:29:22,010 INFO L175 MemorySlicer]: Split 52 memory accesses to 7 slices as follows [2, 1, 4, 2, 9, 3, 31]. 60 percent of accesses are in the largest equivalence class. The 43 initializations are split as follows [2, 1, 4, 2, 0, 3, 31]. The 3 writes are split as follows [0, 0, 0, 0, 3, 0, 0]. [2024-11-20 09:29:22,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:21" (1/1) ... [2024-11-20 09:29:22,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:21" (1/1) ... [2024-11-20 09:29:22,040 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:21" (1/1) ... [2024-11-20 09:29:22,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:21" (1/1) ... [2024-11-20 09:29:22,062 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:21" (1/1) ... [2024-11-20 09:29:22,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:21" (1/1) ... [2024-11-20 09:29:22,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:29:22,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:29:22,086 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:29:22,087 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:29:22,087 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:21" (1/1) ... [2024-11-20 09:29:22,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:29:22,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:29:22,126 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) [2024-11-20 09:29:22,128 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 [2024-11-20 09:29:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 09:29:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 09:29:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 09:29:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 09:29:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 09:29:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-20 09:29:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-20 09:29:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 09:29:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:29:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:29:22,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:29:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 09:29:22,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 09:29:22,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 09:29:22,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 09:29:22,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-20 09:29:22,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-20 09:29:22,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-20 09:29:22,180 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram [2024-11-20 09:29:22,180 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram [2024-11-20 09:29:22,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 09:29:22,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 09:29:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-20 09:29:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-20 09:29:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-20 09:29:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-20 09:29:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-20 09:29:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-20 09:29:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-20 09:29:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_write_nvram [2024-11-20 09:29:22,182 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_write_nvram [2024-11-20 09:29:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:29:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 09:29:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 09:29:22,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 09:29:22,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 09:29:22,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-20 09:29:22,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-20 09:29:22,185 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:29:22,661 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:29:22,663 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:29:23,190 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:29:23,190 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:29:23,762 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:29:23,762 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 09:29:23,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:29:23 BoogieIcfgContainer [2024-11-20 09:29:23,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:29:23,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:29:23,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:29:23,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:29:23,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:29:14" (1/3) ... [2024-11-20 09:29:23,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae89a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:29:23, skipping insertion in model container [2024-11-20 09:29:23,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:21" (2/3) ... [2024-11-20 09:29:23,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae89a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:29:23, skipping insertion in model container [2024-11-20 09:29:23,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:29:23" (3/3) ... [2024-11-20 09:29:23,772 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_read_nvram_write_nvram.i [2024-11-20 09:29:23,790 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:29:23,791 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 09:29:23,791 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:29:23,870 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 09:29:23,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 52 transitions, 118 flow [2024-11-20 09:29:23,952 INFO L124 PetriNetUnfolderBase]: 10/50 cut-off events. [2024-11-20 09:29:23,952 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 09:29:23,957 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. [2024-11-20 09:29:23,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 52 transitions, 118 flow [2024-11-20 09:29:23,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 48 transitions, 105 flow [2024-11-20 09:29:23,974 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:29:23,981 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;@72b2c4ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:29:23,982 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-20 09:29:24,005 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:29:24,006 INFO L124 PetriNetUnfolderBase]: 8/42 cut-off events. [2024-11-20 09:29:24,006 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 09:29:24,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:29:24,007 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:29:24,007 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)] === [2024-11-20 09:29:24,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:29:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash 393972096, now seen corresponding path program 1 times [2024-11-20 09:29:24,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:29:24,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659753581] [2024-11-20 09:29:24,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:29:24,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:29:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:29:25,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:29:25,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:29:25,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659753581] [2024-11-20 09:29:25,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659753581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:29:25,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:29:25,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 09:29:25,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134252468] [2024-11-20 09:29:25,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:29:25,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:29:25,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:29:26,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:29:26,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 09:29:26,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-11-20 09:29:26,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 105 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:29:26,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:29:26,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-11-20 09:29:26,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:29:27,773 INFO L124 PetriNetUnfolderBase]: 1706/2859 cut-off events. [2024-11-20 09:29:27,774 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-20 09:29:27,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5567 conditions, 2859 events. 1706/2859 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 14681 event pairs, 182 based on Foata normal form. 145/2538 useless extension candidates. Maximal degree in co-relation 5484. Up to 767 conditions per place. [2024-11-20 09:29:27,795 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 159 selfloop transitions, 32 changer transitions 21/219 dead transitions. [2024-11-20 09:29:27,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 219 transitions, 889 flow [2024-11-20 09:29:27,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 09:29:27,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 09:29:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 346 transitions. [2024-11-20 09:29:27,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5118343195266272 [2024-11-20 09:29:27,813 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 105 flow. Second operand 13 states and 346 transitions. [2024-11-20 09:29:27,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 219 transitions, 889 flow [2024-11-20 09:29:27,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 219 transitions, 878 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 09:29:27,826 INFO L231 Difference]: Finished difference. Result has 60 places, 77 transitions, 285 flow [2024-11-20 09:29:27,829 INFO L260 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=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=285, PETRI_PLACES=60, PETRI_TRANSITIONS=77} [2024-11-20 09:29:27,834 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2024-11-20 09:29:27,834 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 77 transitions, 285 flow [2024-11-20 09:29:27,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:29:27,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:29:27,835 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:29:27,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:29:27,837 INFO L396 AbstractCegarLoop]: === Iteration 2 === 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)] === [2024-11-20 09:29:27,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:29:27,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2096645885, now seen corresponding path program 1 times [2024-11-20 09:29:27,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:29:27,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793736783] [2024-11-20 09:29:27,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:29:27,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:29:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:29:29,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:29:29,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:29:29,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793736783] [2024-11-20 09:29:29,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793736783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:29:29,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742842888] [2024-11-20 09:29:29,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:29:29,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:29:29,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:29:29,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:29:29,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:29:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:29:30,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 09:29:30,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:29:30,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-20 09:29:30,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 31 [2024-11-20 09:29:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:29:30,694 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:29:30,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742842888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:29:30,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:29:30,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2024-11-20 09:29:30,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322856857] [2024-11-20 09:29:30,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:29:30,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:29:30,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:29:30,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:29:30,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-20 09:29:30,713 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-11-20 09:29:30,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 77 transitions, 285 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:29:30,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:29:30,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-11-20 09:29:30,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:29:31,518 INFO L124 PetriNetUnfolderBase]: 1631/2889 cut-off events. [2024-11-20 09:29:31,518 INFO L125 PetriNetUnfolderBase]: For 788/788 co-relation queries the response was YES. [2024-11-20 09:29:31,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6791 conditions, 2889 events. 1631/2889 cut-off events. For 788/788 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 15702 event pairs, 736 based on Foata normal form. 38/2575 useless extension candidates. Maximal degree in co-relation 6466. Up to 1760 conditions per place. [2024-11-20 09:29:31,537 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 93 selfloop transitions, 25 changer transitions 18/148 dead transitions. [2024-11-20 09:29:31,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 148 transitions, 736 flow [2024-11-20 09:29:31,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:29:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:29:31,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-11-20 09:29:31,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49725274725274726 [2024-11-20 09:29:31,539 INFO L175 Difference]: Start difference. First operand has 60 places, 77 transitions, 285 flow. Second operand 7 states and 181 transitions. [2024-11-20 09:29:31,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 148 transitions, 736 flow [2024-11-20 09:29:31,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 148 transitions, 736 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:29:31,558 INFO L231 Difference]: Finished difference. Result has 71 places, 84 transitions, 438 flow [2024-11-20 09:29:31,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=71, PETRI_TRANSITIONS=84} [2024-11-20 09:29:31,559 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 26 predicate places. [2024-11-20 09:29:31,560 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 84 transitions, 438 flow [2024-11-20 09:29:31,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:29:31,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:29:31,560 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:29:31,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 09:29:31,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:29:31,762 INFO L396 AbstractCegarLoop]: === Iteration 3 === 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)] === [2024-11-20 09:29:31,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:29:31,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1217525052, now seen corresponding path program 1 times [2024-11-20 09:29:31,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:29:31,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136953505] [2024-11-20 09:29:31,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:29:31,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:29:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:29:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:29:32,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:29:32,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136953505] [2024-11-20 09:29:32,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136953505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:29:32,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:29:32,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 09:29:32,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482113015] [2024-11-20 09:29:32,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:29:32,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:29:32,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:29:32,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:29:32,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-20 09:29:32,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-11-20 09:29:32,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 84 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 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) [2024-11-20 09:29:32,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:29:32,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-11-20 09:29:32,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:29:34,543 INFO L124 PetriNetUnfolderBase]: 3317/5689 cut-off events. [2024-11-20 09:29:34,544 INFO L125 PetriNetUnfolderBase]: For 6288/6330 co-relation queries the response was YES. [2024-11-20 09:29:34,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16222 conditions, 5689 events. 3317/5689 cut-off events. For 6288/6330 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 34866 event pairs, 401 based on Foata normal form. 0/5228 useless extension candidates. Maximal degree in co-relation 15579. Up to 1626 conditions per place. [2024-11-20 09:29:34,585 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 214 selfloop transitions, 41 changer transitions 154/421 dead transitions. [2024-11-20 09:29:34,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 421 transitions, 3254 flow [2024-11-20 09:29:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 09:29:34,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 09:29:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 321 transitions. [2024-11-20 09:29:34,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47485207100591714 [2024-11-20 09:29:34,587 INFO L175 Difference]: Start difference. First operand has 71 places, 84 transitions, 438 flow. Second operand 13 states and 321 transitions. [2024-11-20 09:29:34,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 421 transitions, 3254 flow [2024-11-20 09:29:34,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 421 transitions, 3130 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-11-20 09:29:34,683 INFO L231 Difference]: Finished difference. Result has 88 places, 121 transitions, 874 flow [2024-11-20 09:29:34,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=874, PETRI_PLACES=88, PETRI_TRANSITIONS=121} [2024-11-20 09:29:34,684 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 43 predicate places. [2024-11-20 09:29:34,684 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 121 transitions, 874 flow [2024-11-20 09:29:34,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 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) [2024-11-20 09:29:34,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:29:34,685 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:29:34,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:29:34,685 INFO L396 AbstractCegarLoop]: === Iteration 4 === 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)] === [2024-11-20 09:29:34,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:29:34,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1823741986, now seen corresponding path program 1 times [2024-11-20 09:29:34,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:29:34,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429758047] [2024-11-20 09:29:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:29:34,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:29:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:29:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:29:36,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:29:36,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429758047] [2024-11-20 09:29:36,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429758047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:29:36,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547311594] [2024-11-20 09:29:36,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:29:36,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:29:36,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:29:36,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:29:36,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:29:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:29:37,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 09:29:37,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:29:37,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 37 [2024-11-20 09:29:37,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 31 [2024-11-20 09:29:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:29:37,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:29:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:29:37,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547311594] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:29:37,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:29:37,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 9] total 22 [2024-11-20 09:29:37,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687486939] [2024-11-20 09:29:37,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:29:37,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:29:37,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:29:37,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:29:37,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2024-11-20 09:29:37,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-11-20 09:29:37,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 121 transitions, 874 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) [2024-11-20 09:29:37,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:29:37,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-11-20 09:29:37,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:29:38,685 INFO L124 PetriNetUnfolderBase]: 2525/4571 cut-off events. [2024-11-20 09:29:38,687 INFO L125 PetriNetUnfolderBase]: For 6706/6726 co-relation queries the response was YES. [2024-11-20 09:29:38,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15125 conditions, 4571 events. 2525/4571 cut-off events. For 6706/6726 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 28347 event pairs, 931 based on Foata normal form. 98/4373 useless extension candidates. Maximal degree in co-relation 14701. Up to 1964 conditions per place. [2024-11-20 09:29:38,727 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 95 selfloop transitions, 34 changer transitions 123/264 dead transitions. [2024-11-20 09:29:38,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 264 transitions, 2141 flow [2024-11-20 09:29:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:29:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:29:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-11-20 09:29:38,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5274725274725275 [2024-11-20 09:29:38,729 INFO L175 Difference]: Start difference. First operand has 88 places, 121 transitions, 874 flow. Second operand 7 states and 192 transitions. [2024-11-20 09:29:38,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 264 transitions, 2141 flow [2024-11-20 09:29:38,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 264 transitions, 2139 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-20 09:29:38,837 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 753 flow [2024-11-20 09:29:38,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=753, PETRI_PLACES=95, PETRI_TRANSITIONS=91} [2024-11-20 09:29:38,838 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 50 predicate places. [2024-11-20 09:29:38,839 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 753 flow [2024-11-20 09:29:38,839 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) [2024-11-20 09:29:38,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:29:38,839 INFO L204 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] [2024-11-20 09:29:38,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 09:29:39,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-20 09:29:39,041 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)] === [2024-11-20 09:29:39,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:29:39,041 INFO L85 PathProgramCache]: Analyzing trace with hash 816331959, now seen corresponding path program 1 times [2024-11-20 09:29:39,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:29:39,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444590792] [2024-11-20 09:29:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:29:39,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:29:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:29:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:29:40,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:29:40,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444590792] [2024-11-20 09:29:40,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444590792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:29:40,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:29:40,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 09:29:40,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090696461] [2024-11-20 09:29:40,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:29:40,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 09:29:40,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:29:40,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 09:29:40,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-20 09:29:40,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-11-20 09:29:40,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 91 transitions, 753 flow. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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) [2024-11-20 09:29:40,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:29:40,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-11-20 09:29:40,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:29:42,830 INFO L124 PetriNetUnfolderBase]: 3894/7059 cut-off events. [2024-11-20 09:29:42,831 INFO L125 PetriNetUnfolderBase]: For 16691/16691 co-relation queries the response was YES. [2024-11-20 09:29:42,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26032 conditions, 7059 events. 3894/7059 cut-off events. For 16691/16691 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 49434 event pairs, 466 based on Foata normal form. 20/6599 useless extension candidates. Maximal degree in co-relation 26005. Up to 1352 conditions per place. [2024-11-20 09:29:42,888 INFO L140 encePairwiseOnDemand]: 34/52 looper letters, 204 selfloop transitions, 96 changer transitions 98/405 dead transitions. [2024-11-20 09:29:42,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 405 transitions, 3649 flow [2024-11-20 09:29:42,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-20 09:29:42,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-20 09:29:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 427 transitions. [2024-11-20 09:29:42,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41057692307692306 [2024-11-20 09:29:42,891 INFO L175 Difference]: Start difference. First operand has 95 places, 91 transitions, 753 flow. Second operand 20 states and 427 transitions. [2024-11-20 09:29:42,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 405 transitions, 3649 flow [2024-11-20 09:29:43,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 405 transitions, 3469 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-11-20 09:29:43,048 INFO L231 Difference]: Finished difference. Result has 121 places, 151 transitions, 1673 flow [2024-11-20 09:29:43,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1673, PETRI_PLACES=121, PETRI_TRANSITIONS=151} [2024-11-20 09:29:43,049 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 76 predicate places. [2024-11-20 09:29:43,049 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 151 transitions, 1673 flow [2024-11-20 09:29:43,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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) [2024-11-20 09:29:43,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:29:43,049 INFO L204 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] [2024-11-20 09:29:43,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:29:43,049 INFO L396 AbstractCegarLoop]: === Iteration 6 === 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)] === [2024-11-20 09:29:43,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:29:43,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2036525629, now seen corresponding path program 1 times [2024-11-20 09:29:43,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:29:43,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289191297] [2024-11-20 09:29:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:29:43,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:29:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:29:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:29:44,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:29:44,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289191297] [2024-11-20 09:29:44,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289191297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:29:44,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:29:44,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 09:29:44,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039562607] [2024-11-20 09:29:44,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:29:44,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 09:29:44,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:29:44,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 09:29:44,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-20 09:29:44,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-11-20 09:29:44,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 151 transitions, 1673 flow. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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) [2024-11-20 09:29:44,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:29:44,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-11-20 09:29:44,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:29:46,650 INFO L124 PetriNetUnfolderBase]: 4086/7412 cut-off events. [2024-11-20 09:29:46,650 INFO L125 PetriNetUnfolderBase]: For 28480/28522 co-relation queries the response was YES. [2024-11-20 09:29:46,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31099 conditions, 7412 events. 4086/7412 cut-off events. For 28480/28522 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 51863 event pairs, 756 based on Foata normal form. 30/6924 useless extension candidates. Maximal degree in co-relation 31059. Up to 2414 conditions per place. [2024-11-20 09:29:46,733 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 179 selfloop transitions, 74 changer transitions 114/374 dead transitions. [2024-11-20 09:29:46,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 374 transitions, 4048 flow [2024-11-20 09:29:46,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 09:29:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-20 09:29:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 328 transitions. [2024-11-20 09:29:46,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37104072398190047 [2024-11-20 09:29:46,737 INFO L175 Difference]: Start difference. First operand has 121 places, 151 transitions, 1673 flow. Second operand 17 states and 328 transitions. [2024-11-20 09:29:46,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 374 transitions, 4048 flow [2024-11-20 09:29:46,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 374 transitions, 3861 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-11-20 09:29:46,982 INFO L231 Difference]: Finished difference. Result has 141 places, 161 transitions, 1974 flow [2024-11-20 09:29:46,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1974, PETRI_PLACES=141, PETRI_TRANSITIONS=161} [2024-11-20 09:29:46,987 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 96 predicate places. [2024-11-20 09:29:46,987 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 161 transitions, 1974 flow [2024-11-20 09:29:46,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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) [2024-11-20 09:29:46,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:29:46,988 INFO L204 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] [2024-11-20 09:29:46,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:29:46,988 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)] === [2024-11-20 09:29:46,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:29:46,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1772781673, now seen corresponding path program 2 times [2024-11-20 09:29:46,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:29:46,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615420226] [2024-11-20 09:29:46,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:29:46,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:29:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:29:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:29:48,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:29:48,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615420226] [2024-11-20 09:29:48,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615420226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:29:48,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:29:48,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-20 09:29:48,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735788157] [2024-11-20 09:29:48,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:29:48,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 09:29:48,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:29:48,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 09:29:48,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-20 09:29:49,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-11-20 09:29:49,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 161 transitions, 1974 flow. Second operand has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 13 states have internal predecessors, (127), 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) [2024-11-20 09:29:49,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:29:49,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-11-20 09:29:49,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:29:54,465 INFO L124 PetriNetUnfolderBase]: 5696/10500 cut-off events. [2024-11-20 09:29:54,465 INFO L125 PetriNetUnfolderBase]: For 51540/51590 co-relation queries the response was YES. [2024-11-20 09:29:54,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47361 conditions, 10500 events. 5696/10500 cut-off events. For 51540/51590 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 80393 event pairs, 206 based on Foata normal form. 30/9735 useless extension candidates. Maximal degree in co-relation 47311. Up to 2070 conditions per place. [2024-11-20 09:29:54,569 INFO L140 encePairwiseOnDemand]: 33/52 looper letters, 283 selfloop transitions, 225 changer transitions 129/644 dead transitions. [2024-11-20 09:29:54,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 644 transitions, 7529 flow [2024-11-20 09:29:54,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-20 09:29:54,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-20 09:29:54,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 640 transitions. [2024-11-20 09:29:54,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.372960372960373 [2024-11-20 09:29:54,573 INFO L175 Difference]: Start difference. First operand has 141 places, 161 transitions, 1974 flow. Second operand 33 states and 640 transitions. [2024-11-20 09:29:54,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 644 transitions, 7529 flow [2024-11-20 09:29:54,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 644 transitions, 7110 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-11-20 09:29:54,955 INFO L231 Difference]: Finished difference. Result has 184 places, 304 transitions, 4392 flow [2024-11-20 09:29:54,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4392, PETRI_PLACES=184, PETRI_TRANSITIONS=304} [2024-11-20 09:29:54,956 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 139 predicate places. [2024-11-20 09:29:54,956 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 304 transitions, 4392 flow [2024-11-20 09:29:54,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 13 states have internal predecessors, (127), 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) [2024-11-20 09:29:54,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:29:54,957 INFO L204 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] [2024-11-20 09:29:54,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 09:29:54,957 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)] === [2024-11-20 09:29:54,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:29:54,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1774862153, now seen corresponding path program 2 times [2024-11-20 09:29:54,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:29:54,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225529714] [2024-11-20 09:29:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:29:54,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:29:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:29:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:29:57,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:29:57,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225529714] [2024-11-20 09:29:57,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225529714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:29:57,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:29:57,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-20 09:29:57,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804334726] [2024-11-20 09:29:57,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:29:57,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 09:29:57,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:29:57,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 09:29:57,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-20 09:29:57,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-11-20 09:29:57,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 304 transitions, 4392 flow. Second operand has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 14 states have internal predecessors, (135), 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) [2024-11-20 09:29:57,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:29:57,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-11-20 09:29:57,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:30:02,256 INFO L124 PetriNetUnfolderBase]: 6545/12080 cut-off events. [2024-11-20 09:30:02,256 INFO L125 PetriNetUnfolderBase]: For 81351/81351 co-relation queries the response was YES. [2024-11-20 09:30:02,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59496 conditions, 12080 events. 6545/12080 cut-off events. For 81351/81351 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 94870 event pairs, 318 based on Foata normal form. 10/11124 useless extension candidates. Maximal degree in co-relation 59425. Up to 2491 conditions per place. [2024-11-20 09:30:02,351 INFO L140 encePairwiseOnDemand]: 32/52 looper letters, 379 selfloop transitions, 273 changer transitions 148/807 dead transitions. [2024-11-20 09:30:02,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 807 transitions, 11314 flow [2024-11-20 09:30:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-20 09:30:02,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-20 09:30:02,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 590 transitions. [2024-11-20 09:30:02,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3912466843501326 [2024-11-20 09:30:02,354 INFO L175 Difference]: Start difference. First operand has 184 places, 304 transitions, 4392 flow. Second operand 29 states and 590 transitions. [2024-11-20 09:30:02,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 807 transitions, 11314 flow [2024-11-20 09:30:03,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 807 transitions, 10979 flow, removed 165 selfloop flow, removed 3 redundant places. [2024-11-20 09:30:03,284 INFO L231 Difference]: Finished difference. Result has 228 places, 443 transitions, 7266 flow [2024-11-20 09:30:03,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4272, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7266, PETRI_PLACES=228, PETRI_TRANSITIONS=443} [2024-11-20 09:30:03,285 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 183 predicate places. [2024-11-20 09:30:03,285 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 443 transitions, 7266 flow [2024-11-20 09:30:03,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.642857142857142) internal successors, (135), 14 states have internal predecessors, (135), 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) [2024-11-20 09:30:03,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:30:03,285 INFO L204 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] [2024-11-20 09:30:03,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 09:30:03,286 INFO L396 AbstractCegarLoop]: === Iteration 9 === 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)] === [2024-11-20 09:30:03,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:30:03,286 INFO L85 PathProgramCache]: Analyzing trace with hash 890920223, now seen corresponding path program 3 times [2024-11-20 09:30:03,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:30:03,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472648429] [2024-11-20 09:30:03,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:30:03,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:30:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:30:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:30:05,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:30:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472648429] [2024-11-20 09:30:05,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472648429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:30:05,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:30:05,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-20 09:30:05,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237225098] [2024-11-20 09:30:05,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:30:05,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 09:30:05,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:30:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 09:30:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-20 09:30:05,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-11-20 09:30:05,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 443 transitions, 7266 flow. Second operand has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 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) [2024-11-20 09:30:05,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:30:05,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-11-20 09:30:05,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:30:11,470 INFO L124 PetriNetUnfolderBase]: 6598/12410 cut-off events. [2024-11-20 09:30:11,471 INFO L125 PetriNetUnfolderBase]: For 105224/105224 co-relation queries the response was YES. [2024-11-20 09:30:11,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67288 conditions, 12410 events. 6598/12410 cut-off events. For 105224/105224 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 100430 event pairs, 758 based on Foata normal form. 28/11416 useless extension candidates. Maximal degree in co-relation 67199. Up to 3286 conditions per place. [2024-11-20 09:30:11,582 INFO L140 encePairwiseOnDemand]: 32/52 looper letters, 399 selfloop transitions, 294 changer transitions 130/830 dead transitions. [2024-11-20 09:30:11,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 830 transitions, 13121 flow [2024-11-20 09:30:11,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-20 09:30:11,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-20 09:30:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 584 transitions. [2024-11-20 09:30:11,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37435897435897436 [2024-11-20 09:30:11,585 INFO L175 Difference]: Start difference. First operand has 228 places, 443 transitions, 7266 flow. Second operand 30 states and 584 transitions. [2024-11-20 09:30:11,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 830 transitions, 13121 flow [2024-11-20 09:30:12,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 830 transitions, 12264 flow, removed 283 selfloop flow, removed 7 redundant places. [2024-11-20 09:30:12,799 INFO L231 Difference]: Finished difference. Result has 265 places, 513 transitions, 8927 flow [2024-11-20 09:30:12,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=6807, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8927, PETRI_PLACES=265, PETRI_TRANSITIONS=513} [2024-11-20 09:30:12,800 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 220 predicate places. [2024-11-20 09:30:12,801 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 513 transitions, 8927 flow [2024-11-20 09:30:12,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 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) [2024-11-20 09:30:12,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:30:12,801 INFO L204 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] [2024-11-20 09:30:12,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 09:30:12,801 INFO L396 AbstractCegarLoop]: === Iteration 10 === 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)] === [2024-11-20 09:30:12,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:30:12,802 INFO L85 PathProgramCache]: Analyzing trace with hash -866956101, now seen corresponding path program 4 times [2024-11-20 09:30:12,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:30:12,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549476156] [2024-11-20 09:30:12,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:30:12,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:30:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:30:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:30:14,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:30:14,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549476156] [2024-11-20 09:30:14,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549476156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:30:14,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:30:14,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-20 09:30:14,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250213020] [2024-11-20 09:30:14,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:30:14,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 09:30:14,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:30:14,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 09:30:14,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-20 09:30:14,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-11-20 09:30:14,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 513 transitions, 8927 flow. Second operand has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 13 states have internal predecessors, (127), 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) [2024-11-20 09:30:14,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:30:14,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-11-20 09:30:14,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:30:19,984 INFO L124 PetriNetUnfolderBase]: 7994/14921 cut-off events. [2024-11-20 09:30:19,985 INFO L125 PetriNetUnfolderBase]: For 148198/148198 co-relation queries the response was YES. [2024-11-20 09:30:20,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83535 conditions, 14921 events. 7994/14921 cut-off events. For 148198/148198 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 123363 event pairs, 848 based on Foata normal form. 10/13605 useless extension candidates. Maximal degree in co-relation 83432. Up to 3526 conditions per place. [2024-11-20 09:30:20,165 INFO L140 encePairwiseOnDemand]: 32/52 looper letters, 425 selfloop transitions, 363 changer transitions 98/893 dead transitions. [2024-11-20 09:30:20,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 893 transitions, 15562 flow [2024-11-20 09:30:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-20 09:30:20,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-20 09:30:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 421 transitions. [2024-11-20 09:30:20,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4048076923076923 [2024-11-20 09:30:20,168 INFO L175 Difference]: Start difference. First operand has 265 places, 513 transitions, 8927 flow. Second operand 20 states and 421 transitions. [2024-11-20 09:30:20,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 893 transitions, 15562 flow