./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c4f91361 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 ../../../trunk/examples/svcomp/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 e2e7bb75a4a041a1b509d755288a88858836cab5db2230ae4fd0db7ec04fe254 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-c4f9136-m [2023-11-23 15:23:01,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 15:23:01,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 15:23:01,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 15:23:01,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 15:23:01,778 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 15:23:01,779 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 15:23:01,779 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 15:23:01,780 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 15:23:01,783 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 15:23:01,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 15:23:01,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 15:23:01,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 15:23:01,785 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 15:23:01,786 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 15:23:01,786 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 15:23:01,786 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 15:23:01,786 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 15:23:01,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 15:23:01,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 15:23:01,788 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 15:23:01,788 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 15:23:01,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 15:23:01,789 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 15:23:01,789 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 15:23:01,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 15:23:01,789 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 15:23:01,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 15:23:01,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 15:23:01,790 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 15:23:01,791 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 15:23:01,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:23:01,792 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 15:23:01,792 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 15:23:01,792 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 15:23:01,792 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 15:23:01,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 15:23:01,792 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 15:23:01,793 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 15:23:01,793 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 15:23:01,793 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 15:23:01,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 15:23:01,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2e7bb75a4a041a1b509d755288a88858836cab5db2230ae4fd0db7ec04fe254 [2023-11-23 15:23:01,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 15:23:01,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 15:23:01,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 15:23:01,990 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 15:23:01,990 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 15:23:01,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i [2023-11-23 15:23:03,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 15:23:03,533 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 15:23:03,534 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i [2023-11-23 15:23:03,566 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48573ffb1/ccac24bdc80945729fcc58de4a145e2c/FLAG11e56f39f [2023-11-23 15:23:03,581 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48573ffb1/ccac24bdc80945729fcc58de4a145e2c [2023-11-23 15:23:03,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 15:23:03,585 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 15:23:03,587 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 15:23:03,587 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 15:23:03,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 15:23:03,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:23:03" (1/1) ... [2023-11-23 15:23:03,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c114a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:03, skipping insertion in model container [2023-11-23 15:23:03,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:23:03" (1/1) ... [2023-11-23 15:23:03,678 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 15:23:03,931 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i[5469,5482] [2023-11-23 15:23:07,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:23:07,872 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 15:23:07,889 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i[5469,5482] [2023-11-23 15:23:07,978 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "b %b0, %1\n" : "+q" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3227] [2023-11-23 15:23:07,979 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "w %w0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3227] [2023-11-23 15:23:07,980 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "l %0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3227] [2023-11-23 15:23:07,980 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile ("" "xchg" "q %q0, %1\n" : "+r" (__ret), "+m" (*((&head->first))) : : "memory", "cc"); [3227] [2023-11-23 15:23:08,053 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: asm volatile("ud2"); [5814] [2023-11-23 15:23:08,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:23:08,465 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 15:23:08,465 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 15:23:08,465 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 15:23:08,465 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 15:23:08,466 WARN L675 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 15:23:08,466 WARN L675 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 15:23:08,472 INFO L206 MainTranslator]: Completed translation [2023-11-23 15:23:08,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:08 WrapperNode [2023-11-23 15:23:08,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 15:23:08,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 15:23:08,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 15:23:08,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 15:23:08,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:08" (1/1) ... [2023-11-23 15:23:08,567 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:08" (1/1) ... [2023-11-23 15:23:08,620 INFO L138 Inliner]: procedures = 1353, calls = 1466, calls flagged for inlining = 347, calls inlined = 18, statements flattened = 379 [2023-11-23 15:23:08,620 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 15:23:08,621 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 15:23:08,621 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 15:23:08,621 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 15:23:08,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:08" (1/1) ... [2023-11-23 15:23:08,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:08" (1/1) ... [2023-11-23 15:23:08,638 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:08" (1/1) ... [2023-11-23 15:23:08,656 INFO L175 MemorySlicer]: Split 36 memory accesses to 9 slices as follows [2, 1, 12, 4, 2, 2, 2, 3, 8]. 33 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 1, 6, 4, 0, 0, 2, 3, 0]. The 10 writes are split as follows [0, 0, 6, 0, 1, 1, 0, 0, 2]. [2023-11-23 15:23:08,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:08" (1/1) ... [2023-11-23 15:23:08,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:08" (1/1) ... [2023-11-23 15:23:08,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:08" (1/1) ... [2023-11-23 15:23:08,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:08" (1/1) ... [2023-11-23 15:23:08,675 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:08" (1/1) ... [2023-11-23 15:23:08,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:08" (1/1) ... [2023-11-23 15:23:08,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 15:23:08,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 15:23:08,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 15:23:08,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 15:23:08,685 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:08" (1/1) ... [2023-11-23 15:23:08,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:23:08,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:23:08,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 15:23:08,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 15:23:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 15:23:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 15:23:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 15:23:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 15:23:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 15:23:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 15:23:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 15:23:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 15:23:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 15:23:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 15:23:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 15:23:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 15:23:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 15:23:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-23 15:23:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-23 15:23:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-23 15:23:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-23 15:23:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-23 15:23:08,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-23 15:23:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-23 15:23:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2023-11-23 15:23:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2023-11-23 15:23:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 15:23:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 15:23:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 15:23:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 15:23:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 15:23:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 15:23:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 15:23:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 15:23:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 15:23:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 15:23:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram [2023-11-23 15:23:08,797 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram [2023-11-23 15:23:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 15:23:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 15:23:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 15:23:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 15:23:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 15:23:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 15:23:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 15:23:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 15:23:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 15:23:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 15:23:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 15:23:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-23 15:23:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_write_nvram [2023-11-23 15:23:08,799 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_write_nvram [2023-11-23 15:23:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 15:23:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 15:23:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 15:23:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 15:23:08,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 15:23:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 15:23:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 15:23:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 15:23:08,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 15:23:08,802 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 15:23:09,171 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 15:23:09,173 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 15:23:09,468 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 15:23:09,745 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 15:23:09,745 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 15:23:09,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:23:09 BoogieIcfgContainer [2023-11-23 15:23:09,746 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 15:23:09,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 15:23:09,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 15:23:09,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 15:23:09,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:23:03" (1/3) ... [2023-11-23 15:23:09,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7d14ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:23:09, skipping insertion in model container [2023-11-23 15:23:09,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:08" (2/3) ... [2023-11-23 15:23:09,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7d14ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:23:09, skipping insertion in model container [2023-11-23 15:23:09,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:23:09" (3/3) ... [2023-11-23 15:23:09,751 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_read_nvram_write_nvram.i [2023-11-23 15:23:09,758 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 15:23:09,764 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 15:23:09,764 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 15:23:09,764 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 15:23:09,808 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 15:23:09,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 53 transitions, 120 flow [2023-11-23 15:23:09,880 INFO L124 PetriNetUnfolderBase]: 10/51 cut-off events. [2023-11-23 15:23:09,881 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 15:23:09,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 51 events. 10/51 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2023-11-23 15:23:09,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 53 transitions, 120 flow [2023-11-23 15:23:09,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 49 transitions, 107 flow [2023-11-23 15:23:09,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 15:23:09,899 INFO L357 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, mHoare=true, 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;@72bb8cc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 15:23:09,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-23 15:23:09,911 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 15:23:09,911 INFO L124 PetriNetUnfolderBase]: 8/43 cut-off events. [2023-11-23 15:23:09,911 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 15:23:09,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:23:09,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:23:09,912 INFO L420 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)] === [2023-11-23 15:23:09,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:23:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash -608021087, now seen corresponding path program 1 times [2023-11-23 15:23:09,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:23:09,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377784267] [2023-11-23 15:23:09,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:23:09,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:23:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:23:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:23:10,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:23:10,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377784267] [2023-11-23 15:23:10,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377784267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:23:10,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:23:10,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 15:23:10,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339363777] [2023-11-23 15:23:10,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:23:10,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 15:23:10,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:23:10,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 15:23:10,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:23:10,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2023-11-23 15:23:10,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2023-11-23 15:23:10,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:23:10,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2023-11-23 15:23:10,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:23:11,883 INFO L124 PetriNetUnfolderBase]: 1234/2043 cut-off events. [2023-11-23 15:23:11,883 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-23 15:23:11,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 2043 events. 1234/2043 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9477 event pairs, 407 based on Foata normal form. 70/1772 useless extension candidates. Maximal degree in co-relation 3852. Up to 999 conditions per place. [2023-11-23 15:23:11,893 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 96 selfloop transitions, 17 changer transitions 25/145 dead transitions. [2023-11-23 15:23:11,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 145 transitions, 587 flow [2023-11-23 15:23:11,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:23:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-23 15:23:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2023-11-23 15:23:11,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188679245283019 [2023-11-23 15:23:11,904 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 220 transitions. [2023-11-23 15:23:11,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 220 transitions. [2023-11-23 15:23:11,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:23:11,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 220 transitions. [2023-11-23 15:23:11,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 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) [2023-11-23 15:23:11,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 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) [2023-11-23 15:23:11,911 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 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) [2023-11-23 15:23:11,912 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 107 flow. Second operand 8 states and 220 transitions. [2023-11-23 15:23:11,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 145 transitions, 587 flow [2023-11-23 15:23:11,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 145 transitions, 578 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 15:23:11,918 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 202 flow [2023-11-23 15:23:11,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=202, PETRI_PLACES=55, PETRI_TRANSITIONS=59} [2023-11-23 15:23:11,922 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-11-23 15:23:11,922 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 202 flow [2023-11-23 15:23:11,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2023-11-23 15:23:11,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:23:11,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:23:11,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 15:23:11,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-23 15:23:11,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:23:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1130806454, now seen corresponding path program 1 times [2023-11-23 15:23:11,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:23:11,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881440573] [2023-11-23 15:23:11,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:23:11,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:23:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:23:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:23:12,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:23:12,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881440573] [2023-11-23 15:23:12,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881440573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:23:12,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:23:12,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 15:23:12,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939887516] [2023-11-23 15:23:12,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:23:12,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 15:23:12,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:23:12,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 15:23:12,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:23:12,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2023-11-23 15:23:12,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 202 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) [2023-11-23 15:23:12,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:23:12,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2023-11-23 15:23:12,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:23:14,454 INFO L124 PetriNetUnfolderBase]: 2178/3697 cut-off events. [2023-11-23 15:23:14,454 INFO L125 PetriNetUnfolderBase]: For 1344/1344 co-relation queries the response was YES. [2023-11-23 15:23:14,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8864 conditions, 3697 events. 2178/3697 cut-off events. For 1344/1344 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 20261 event pairs, 229 based on Foata normal form. 0/3367 useless extension candidates. Maximal degree in co-relation 8531. Up to 1072 conditions per place. [2023-11-23 15:23:14,467 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 165 selfloop transitions, 31 changer transitions 94/298 dead transitions. [2023-11-23 15:23:14,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 298 transitions, 1663 flow [2023-11-23 15:23:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 15:23:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-23 15:23:14,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 333 transitions. [2023-11-23 15:23:14,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4833091436865022 [2023-11-23 15:23:14,470 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 333 transitions. [2023-11-23 15:23:14,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 333 transitions. [2023-11-23 15:23:14,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:23:14,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 333 transitions. [2023-11-23 15:23:14,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 25.615384615384617) internal successors, (333), 13 states have internal predecessors, (333), 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) [2023-11-23 15:23:14,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 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) [2023-11-23 15:23:14,474 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 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) [2023-11-23 15:23:14,474 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 202 flow. Second operand 13 states and 333 transitions. [2023-11-23 15:23:14,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 298 transitions, 1663 flow [2023-11-23 15:23:14,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 298 transitions, 1663 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 15:23:14,485 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 478 flow [2023-11-23 15:23:14,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=478, PETRI_PLACES=75, PETRI_TRANSITIONS=87} [2023-11-23 15:23:14,486 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 29 predicate places. [2023-11-23 15:23:14,486 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 478 flow [2023-11-23 15:23:14,487 INFO L496 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) [2023-11-23 15:23:14,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:23:14,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:23:14,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 15:23:14,487 INFO L420 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)] === [2023-11-23 15:23:14,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:23:14,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1626533977, now seen corresponding path program 1 times [2023-11-23 15:23:14,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:23:14,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146578596] [2023-11-23 15:23:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:23:14,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:23:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:23:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 15:23:15,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:23:15,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146578596] [2023-11-23 15:23:15,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146578596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:23:15,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:23:15,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 15:23:15,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005714334] [2023-11-23 15:23:15,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:23:15,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 15:23:15,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:23:15,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 15:23:15,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:23:15,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2023-11-23 15:23:15,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 478 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-11-23 15:23:15,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:23:15,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2023-11-23 15:23:15,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:23:15,714 INFO L124 PetriNetUnfolderBase]: 1929/3312 cut-off events. [2023-11-23 15:23:15,715 INFO L125 PetriNetUnfolderBase]: For 2588/2588 co-relation queries the response was YES. [2023-11-23 15:23:15,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9755 conditions, 3312 events. 1929/3312 cut-off events. For 2588/2588 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 17887 event pairs, 659 based on Foata normal form. 54/3116 useless extension candidates. Maximal degree in co-relation 9495. Up to 1501 conditions per place. [2023-11-23 15:23:15,727 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 88 selfloop transitions, 28 changer transitions 78/202 dead transitions. [2023-11-23 15:23:15,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 202 transitions, 1312 flow [2023-11-23 15:23:15,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:23:15,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-23 15:23:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2023-11-23 15:23:15,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49292452830188677 [2023-11-23 15:23:15,728 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 209 transitions. [2023-11-23 15:23:15,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 209 transitions. [2023-11-23 15:23:15,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:23:15,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 209 transitions. [2023-11-23 15:23:15,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 26.125) internal successors, (209), 8 states have internal predecessors, (209), 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) [2023-11-23 15:23:15,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 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) [2023-11-23 15:23:15,731 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 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) [2023-11-23 15:23:15,731 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 478 flow. Second operand 8 states and 209 transitions. [2023-11-23 15:23:15,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 202 transitions, 1312 flow [2023-11-23 15:23:15,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 202 transitions, 1310 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-23 15:23:15,751 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 559 flow [2023-11-23 15:23:15,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=559, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2023-11-23 15:23:15,753 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2023-11-23 15:23:15,753 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 559 flow [2023-11-23 15:23:15,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-11-23 15:23:15,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:23:15,754 INFO L208 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] [2023-11-23 15:23:15,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 15:23:15,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-23 15:23:15,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:23:15,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1117240035, now seen corresponding path program 1 times [2023-11-23 15:23:15,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:23:15,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287409004] [2023-11-23 15:23:15,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:23:15,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:23:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:23:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:23:18,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:23:18,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287409004] [2023-11-23 15:23:18,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287409004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:23:18,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:23:18,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-23 15:23:18,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624187389] [2023-11-23 15:23:18,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:23:18,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 15:23:18,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:23:18,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 15:23:18,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-23 15:23:18,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 53 [2023-11-23 15:23:18,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 559 flow. Second operand has 19 states, 19 states have (on average 7.2105263157894735) internal successors, (137), 19 states have internal predecessors, (137), 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) [2023-11-23 15:23:18,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:23:18,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 53 [2023-11-23 15:23:18,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:23:30,001 INFO L124 PetriNetUnfolderBase]: 6800/11947 cut-off events. [2023-11-23 15:23:30,002 INFO L125 PetriNetUnfolderBase]: For 25141/25141 co-relation queries the response was YES. [2023-11-23 15:23:30,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41608 conditions, 11947 events. 6800/11947 cut-off events. For 25141/25141 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 88543 event pairs, 326 based on Foata normal form. 34/11143 useless extension candidates. Maximal degree in co-relation 41087. Up to 2277 conditions per place. [2023-11-23 15:23:30,065 INFO L140 encePairwiseOnDemand]: 28/53 looper letters, 454 selfloop transitions, 183 changer transitions 356/998 dead transitions. [2023-11-23 15:23:30,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 998 transitions, 8625 flow [2023-11-23 15:23:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-11-23 15:23:30,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-11-23 15:23:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 1121 transitions. [2023-11-23 15:23:30,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31104328523862373 [2023-11-23 15:23:30,070 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 1121 transitions. [2023-11-23 15:23:30,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 1121 transitions. [2023-11-23 15:23:30,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:23:30,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 1121 transitions. [2023-11-23 15:23:30,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 16.485294117647058) internal successors, (1121), 68 states have internal predecessors, (1121), 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) [2023-11-23 15:23:30,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 53.0) internal successors, (3657), 69 states have internal predecessors, (3657), 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) [2023-11-23 15:23:30,079 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 53.0) internal successors, (3657), 69 states have internal predecessors, (3657), 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) [2023-11-23 15:23:30,079 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 559 flow. Second operand 68 states and 1121 transitions. [2023-11-23 15:23:30,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 998 transitions, 8625 flow [2023-11-23 15:23:30,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 998 transitions, 8180 flow, removed 61 selfloop flow, removed 5 redundant places. [2023-11-23 15:23:30,315 INFO L231 Difference]: Finished difference. Result has 184 places, 281 transitions, 3041 flow [2023-11-23 15:23:30,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=3041, PETRI_PLACES=184, PETRI_TRANSITIONS=281} [2023-11-23 15:23:30,316 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 138 predicate places. [2023-11-23 15:23:30,316 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 281 transitions, 3041 flow [2023-11-23 15:23:30,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.2105263157894735) internal successors, (137), 19 states have internal predecessors, (137), 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) [2023-11-23 15:23:30,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:23:30,317 INFO L208 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] [2023-11-23 15:23:30,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 15:23:30,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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)] === [2023-11-23 15:23:30,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:23:30,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1273801667, now seen corresponding path program 1 times [2023-11-23 15:23:30,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:23:30,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186216590] [2023-11-23 15:23:30,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:23:30,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:23:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:23:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:23:33,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:23:33,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186216590] [2023-11-23 15:23:33,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186216590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:23:33,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:23:33,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 15:23:33,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019117993] [2023-11-23 15:23:33,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:23:33,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 15:23:33,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:23:33,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 15:23:33,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-23 15:23:34,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 53 [2023-11-23 15:23:34,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 281 transitions, 3041 flow. Second operand has 18 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 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) [2023-11-23 15:23:34,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:23:34,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 53 [2023-11-23 15:23:34,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:23:40,564 INFO L124 PetriNetUnfolderBase]: 6845/12310 cut-off events. [2023-11-23 15:23:40,564 INFO L125 PetriNetUnfolderBase]: For 67649/67649 co-relation queries the response was YES. [2023-11-23 15:23:40,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55304 conditions, 12310 events. 6845/12310 cut-off events. For 67649/67649 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 94065 event pairs, 480 based on Foata normal form. 12/12316 useless extension candidates. Maximal degree in co-relation 54908. Up to 2452 conditions per place. [2023-11-23 15:23:40,673 INFO L140 encePairwiseOnDemand]: 31/53 looper letters, 433 selfloop transitions, 193 changer transitions 229/861 dead transitions. [2023-11-23 15:23:40,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 861 transitions, 9138 flow [2023-11-23 15:23:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-23 15:23:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-23 15:23:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 490 transitions. [2023-11-23 15:23:40,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3188028627195836 [2023-11-23 15:23:40,676 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 490 transitions. [2023-11-23 15:23:40,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 490 transitions. [2023-11-23 15:23:40,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:23:40,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 490 transitions. [2023-11-23 15:23:40,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 16.896551724137932) internal successors, (490), 29 states have internal predecessors, (490), 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) [2023-11-23 15:23:40,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 53.0) internal successors, (1590), 30 states have internal predecessors, (1590), 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) [2023-11-23 15:23:40,686 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 53.0) internal successors, (1590), 30 states have internal predecessors, (1590), 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) [2023-11-23 15:23:40,686 INFO L175 Difference]: Start difference. First operand has 184 places, 281 transitions, 3041 flow. Second operand 29 states and 490 transitions. [2023-11-23 15:23:40,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 861 transitions, 9138 flow [2023-11-23 15:23:41,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 861 transitions, 8765 flow, removed 142 selfloop flow, removed 9 redundant places. [2023-11-23 15:23:41,147 INFO L231 Difference]: Finished difference. Result has 204 places, 322 transitions, 3987 flow [2023-11-23 15:23:41,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2908, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3987, PETRI_PLACES=204, PETRI_TRANSITIONS=322} [2023-11-23 15:23:41,150 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 158 predicate places. [2023-11-23 15:23:41,150 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 322 transitions, 3987 flow [2023-11-23 15:23:41,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 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) [2023-11-23 15:23:41,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:23:41,150 INFO L208 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] [2023-11-23 15:23:41,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 15:23:41,152 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-23 15:23:41,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:23:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1773794005, now seen corresponding path program 2 times [2023-11-23 15:23:41,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:23:41,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883805080] [2023-11-23 15:23:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:23:41,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:23:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:23:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:23:42,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:23:42,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883805080] [2023-11-23 15:23:42,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883805080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:23:42,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:23:42,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 15:23:42,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308840110] [2023-11-23 15:23:42,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:23:42,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 15:23:42,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:23:42,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 15:23:42,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-23 15:23:42,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2023-11-23 15:23:42,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 322 transitions, 3987 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) [2023-11-23 15:23:42,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:23:42,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2023-11-23 15:23:42,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:23:48,519 INFO L124 PetriNetUnfolderBase]: 9354/17419 cut-off events. [2023-11-23 15:23:48,519 INFO L125 PetriNetUnfolderBase]: For 119798/119906 co-relation queries the response was YES. [2023-11-23 15:23:48,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83564 conditions, 17419 events. 9354/17419 cut-off events. For 119798/119906 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 148998 event pairs, 769 based on Foata normal form. 34/17435 useless extension candidates. Maximal degree in co-relation 82571. Up to 3565 conditions per place. [2023-11-23 15:23:48,656 INFO L140 encePairwiseOnDemand]: 33/53 looper letters, 470 selfloop transitions, 273 changer transitions 240/996 dead transitions. [2023-11-23 15:23:48,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 996 transitions, 13574 flow [2023-11-23 15:23:48,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-23 15:23:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-23 15:23:48,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 696 transitions. [2023-11-23 15:23:48,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38623751387347394 [2023-11-23 15:23:48,659 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 696 transitions. [2023-11-23 15:23:48,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 696 transitions. [2023-11-23 15:23:48,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:23:48,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 696 transitions. [2023-11-23 15:23:48,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 20.470588235294116) internal successors, (696), 34 states have internal predecessors, (696), 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) [2023-11-23 15:23:48,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 53.0) internal successors, (1855), 35 states have internal predecessors, (1855), 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) [2023-11-23 15:23:48,663 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 53.0) internal successors, (1855), 35 states have internal predecessors, (1855), 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) [2023-11-23 15:23:48,663 INFO L175 Difference]: Start difference. First operand has 204 places, 322 transitions, 3987 flow. Second operand 34 states and 696 transitions. [2023-11-23 15:23:48,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 996 transitions, 13574 flow [2023-11-23 15:23:49,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 996 transitions, 12617 flow, removed 213 selfloop flow, removed 13 redundant places. [2023-11-23 15:23:49,504 INFO L231 Difference]: Finished difference. Result has 240 places, 460 transitions, 6706 flow [2023-11-23 15:23:49,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3730, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6706, PETRI_PLACES=240, PETRI_TRANSITIONS=460} [2023-11-23 15:23:49,505 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 194 predicate places. [2023-11-23 15:23:49,505 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 460 transitions, 6706 flow [2023-11-23 15:23:49,506 INFO L496 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) [2023-11-23 15:23:49,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:23:49,506 INFO L208 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] [2023-11-23 15:23:49,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 15:23:49,506 INFO L420 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)] === [2023-11-23 15:23:49,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:23:49,507 INFO L85 PathProgramCache]: Analyzing trace with hash 356017341, now seen corresponding path program 2 times [2023-11-23 15:23:49,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:23:49,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900613839] [2023-11-23 15:23:49,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:23:49,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:23:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:23:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:23:51,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:23:51,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900613839] [2023-11-23 15:23:51,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900613839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:23:51,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:23:51,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 15:23:51,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279613476] [2023-11-23 15:23:51,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:23:51,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 15:23:51,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:23:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 15:23:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-23 15:23:51,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 53 [2023-11-23 15:23:51,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 460 transitions, 6706 flow. Second operand has 18 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 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) [2023-11-23 15:23:51,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:23:51,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 53 [2023-11-23 15:23:51,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:24:00,028 INFO L124 PetriNetUnfolderBase]: 11321/20440 cut-off events. [2023-11-23 15:24:00,028 INFO L125 PetriNetUnfolderBase]: For 173556/173564 co-relation queries the response was YES. [2023-11-23 15:24:00,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105904 conditions, 20440 events. 11321/20440 cut-off events. For 173556/173564 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 170982 event pairs, 734 based on Foata normal form. 12/20442 useless extension candidates. Maximal degree in co-relation 104348. Up to 4645 conditions per place. [2023-11-23 15:24:00,225 INFO L140 encePairwiseOnDemand]: 29/53 looper letters, 611 selfloop transitions, 324 changer transitions 309/1254 dead transitions. [2023-11-23 15:24:00,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 1254 transitions, 17603 flow [2023-11-23 15:24:00,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-23 15:24:00,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-23 15:24:00,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 580 transitions. [2023-11-23 15:24:00,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419811320754717 [2023-11-23 15:24:00,228 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 580 transitions. [2023-11-23 15:24:00,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 580 transitions. [2023-11-23 15:24:00,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:24:00,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 580 transitions. [2023-11-23 15:24:00,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 18.125) internal successors, (580), 32 states have internal predecessors, (580), 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) [2023-11-23 15:24:00,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 53.0) internal successors, (1749), 33 states have internal predecessors, (1749), 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) [2023-11-23 15:24:00,231 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 53.0) internal successors, (1749), 33 states have internal predecessors, (1749), 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) [2023-11-23 15:24:00,231 INFO L175 Difference]: Start difference. First operand has 240 places, 460 transitions, 6706 flow. Second operand 32 states and 580 transitions. [2023-11-23 15:24:00,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 1254 transitions, 17603 flow [2023-11-23 15:24:01,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 1254 transitions, 17029 flow, removed 144 selfloop flow, removed 7 redundant places. [2023-11-23 15:24:02,010 INFO L231 Difference]: Finished difference. Result has 273 places, 549 transitions, 8603 flow [2023-11-23 15:24:02,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=6433, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=8603, PETRI_PLACES=273, PETRI_TRANSITIONS=549} [2023-11-23 15:24:02,011 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 227 predicate places. [2023-11-23 15:24:02,011 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 549 transitions, 8603 flow [2023-11-23 15:24:02,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 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) [2023-11-23 15:24:02,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:24:02,012 INFO L208 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] [2023-11-23 15:24:02,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 15:24:02,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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)] === [2023-11-23 15:24:02,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:24:02,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2006607263, now seen corresponding path program 3 times [2023-11-23 15:24:02,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:24:02,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427821264] [2023-11-23 15:24:02,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:24:02,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:24:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:24:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:24:04,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:24:04,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427821264] [2023-11-23 15:24:04,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427821264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:24:04,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:24:04,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 15:24:04,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117866464] [2023-11-23 15:24:04,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:24:04,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 15:24:04,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:24:04,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 15:24:04,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-23 15:24:04,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2023-11-23 15:24:04,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 549 transitions, 8603 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) [2023-11-23 15:24:04,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:24:04,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2023-11-23 15:24:04,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:24:11,250 INFO L124 PetriNetUnfolderBase]: 10657/19688 cut-off events. [2023-11-23 15:24:11,251 INFO L125 PetriNetUnfolderBase]: For 195438/195550 co-relation queries the response was YES. [2023-11-23 15:24:11,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107421 conditions, 19688 events. 10657/19688 cut-off events. For 195438/195550 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 168681 event pairs, 306 based on Foata normal form. 22/19690 useless extension candidates. Maximal degree in co-relation 106966. Up to 6281 conditions per place. [2023-11-23 15:24:11,499 INFO L140 encePairwiseOnDemand]: 33/53 looper letters, 473 selfloop transitions, 416 changer transitions 195/1103 dead transitions. [2023-11-23 15:24:11,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 1103 transitions, 17119 flow [2023-11-23 15:24:11,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-23 15:24:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-23 15:24:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 506 transitions. [2023-11-23 15:24:11,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671988388969521 [2023-11-23 15:24:11,501 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 506 transitions. [2023-11-23 15:24:11,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 506 transitions. [2023-11-23 15:24:11,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:24:11,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 506 transitions. [2023-11-23 15:24:11,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 19.46153846153846) internal successors, (506), 26 states have internal predecessors, (506), 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) [2023-11-23 15:24:11,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 53.0) internal successors, (1431), 27 states have internal predecessors, (1431), 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) [2023-11-23 15:24:11,504 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 53.0) internal successors, (1431), 27 states have internal predecessors, (1431), 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) [2023-11-23 15:24:11,504 INFO L175 Difference]: Start difference. First operand has 273 places, 549 transitions, 8603 flow. Second operand 26 states and 506 transitions. [2023-11-23 15:24:11,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 1103 transitions, 17119 flow [2023-11-23 15:24:13,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 1103 transitions, 16417 flow, removed 195 selfloop flow, removed 9 redundant places. [2023-11-23 15:24:13,297 INFO L231 Difference]: Finished difference. Result has 298 places, 706 transitions, 11644 flow [2023-11-23 15:24:13,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=8187, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=11644, PETRI_PLACES=298, PETRI_TRANSITIONS=706} [2023-11-23 15:24:13,298 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 252 predicate places. [2023-11-23 15:24:13,298 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 706 transitions, 11644 flow [2023-11-23 15:24:13,299 INFO L496 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) [2023-11-23 15:24:13,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:24:13,299 INFO L208 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] [2023-11-23 15:24:13,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 15:24:13,299 INFO L420 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)] === [2023-11-23 15:24:13,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:24:13,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1941543225, now seen corresponding path program 3 times [2023-11-23 15:24:13,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:24:13,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737329273] [2023-11-23 15:24:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:24:13,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:24:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:24:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:24:15,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:24:15,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737329273] [2023-11-23 15:24:15,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737329273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:24:15,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:24:15,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 15:24:15,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124660963] [2023-11-23 15:24:15,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:24:15,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 15:24:15,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:24:15,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 15:24:15,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-23 15:24:15,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2023-11-23 15:24:15,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 706 transitions, 11644 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) [2023-11-23 15:24:15,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:24:15,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2023-11-23 15:24:15,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:24:23,641 INFO L124 PetriNetUnfolderBase]: 10938/20382 cut-off events. [2023-11-23 15:24:23,641 INFO L125 PetriNetUnfolderBase]: For 236912/237014 co-relation queries the response was YES. [2023-11-23 15:24:23,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117013 conditions, 20382 events. 10938/20382 cut-off events. For 236912/237014 co-relation queries the response was YES. Maximal size of possible extension queue 983. Compared 176569 event pairs, 432 based on Foata normal form. 50/20381 useless extension candidates. Maximal degree in co-relation 116760. Up to 3914 conditions per place. [2023-11-23 15:24:23,859 INFO L140 encePairwiseOnDemand]: 34/53 looper letters, 458 selfloop transitions, 701 changer transitions 282/1465 dead transitions. [2023-11-23 15:24:23,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 1465 transitions, 24368 flow [2023-11-23 15:24:23,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-23 15:24:23,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-11-23 15:24:23,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 808 transitions. [2023-11-23 15:24:23,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36298292902066487 [2023-11-23 15:24:23,861 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 808 transitions. [2023-11-23 15:24:23,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 808 transitions. [2023-11-23 15:24:23,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:24:23,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 808 transitions. [2023-11-23 15:24:23,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 19.238095238095237) internal successors, (808), 42 states have internal predecessors, (808), 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) [2023-11-23 15:24:23,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 53.0) internal successors, (2279), 43 states have internal predecessors, (2279), 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) [2023-11-23 15:24:23,866 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 53.0) internal successors, (2279), 43 states have internal predecessors, (2279), 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) [2023-11-23 15:24:23,866 INFO L175 Difference]: Start difference. First operand has 298 places, 706 transitions, 11644 flow. Second operand 42 states and 808 transitions. [2023-11-23 15:24:23,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 1465 transitions, 24368 flow [2023-11-23 15:24:26,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 1465 transitions, 23465 flow, removed 320 selfloop flow, removed 9 redundant places. [2023-11-23 15:24:26,090 INFO L231 Difference]: Finished difference. Result has 350 places, 908 transitions, 16697 flow [2023-11-23 15:24:26,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=11302, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=504, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=16697, PETRI_PLACES=350, PETRI_TRANSITIONS=908} [2023-11-23 15:24:26,091 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 304 predicate places. [2023-11-23 15:24:26,091 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 908 transitions, 16697 flow [2023-11-23 15:24:26,092 INFO L496 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) [2023-11-23 15:24:26,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:24:26,092 INFO L208 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] [2023-11-23 15:24:26,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 15:24:26,092 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-23 15:24:26,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:24:26,093 INFO L85 PathProgramCache]: Analyzing trace with hash 786455443, now seen corresponding path program 4 times [2023-11-23 15:24:26,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:24:26,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719778509] [2023-11-23 15:24:26,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:24:26,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:24:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:24:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:24:27,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:24:27,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719778509] [2023-11-23 15:24:27,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719778509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:24:27,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:24:27,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 15:24:27,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981891074] [2023-11-23 15:24:27,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:24:27,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 15:24:27,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:24:27,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 15:24:27,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-23 15:24:27,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2023-11-23 15:24:27,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 908 transitions, 16697 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) [2023-11-23 15:24:27,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:24:27,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2023-11-23 15:24:27,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:24:37,267 INFO L124 PetriNetUnfolderBase]: 9976/18943 cut-off events. [2023-11-23 15:24:37,267 INFO L125 PetriNetUnfolderBase]: For 224367/224429 co-relation queries the response was YES. [2023-11-23 15:24:37,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113482 conditions, 18943 events. 9976/18943 cut-off events. For 224367/224429 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 165878 event pairs, 537 based on Foata normal form. 40/18965 useless extension candidates. Maximal degree in co-relation 113248. Up to 4515 conditions per place. [2023-11-23 15:24:37,508 INFO L140 encePairwiseOnDemand]: 34/53 looper letters, 519 selfloop transitions, 731 changer transitions 194/1463 dead transitions. [2023-11-23 15:24:37,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 1463 transitions, 26310 flow [2023-11-23 15:24:37,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-23 15:24:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-23 15:24:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 662 transitions. [2023-11-23 15:24:37,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3469601677148847 [2023-11-23 15:24:37,511 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 662 transitions. [2023-11-23 15:24:37,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 662 transitions. [2023-11-23 15:24:37,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:24:37,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 662 transitions. [2023-11-23 15:24:37,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 18.38888888888889) internal successors, (662), 36 states have internal predecessors, (662), 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) [2023-11-23 15:24:37,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 53.0) internal successors, (1961), 37 states have internal predecessors, (1961), 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) [2023-11-23 15:24:37,514 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 53.0) internal successors, (1961), 37 states have internal predecessors, (1961), 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) [2023-11-23 15:24:37,515 INFO L175 Difference]: Start difference. First operand has 350 places, 908 transitions, 16697 flow. Second operand 36 states and 662 transitions. [2023-11-23 15:24:37,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 1463 transitions, 26310 flow [2023-11-23 15:24:40,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 1463 transitions, 25072 flow, removed 546 selfloop flow, removed 12 redundant places. [2023-11-23 15:24:40,252 INFO L231 Difference]: Finished difference. Result has 384 places, 1023 transitions, 19899 flow [2023-11-23 15:24:40,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=15842, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=607, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=19899, PETRI_PLACES=384, PETRI_TRANSITIONS=1023} [2023-11-23 15:24:40,253 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 338 predicate places. [2023-11-23 15:24:40,253 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 1023 transitions, 19899 flow [2023-11-23 15:24:40,254 INFO L496 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) [2023-11-23 15:24:40,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:24:40,254 INFO L208 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] [2023-11-23 15:24:40,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 15:24:40,254 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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)] === [2023-11-23 15:24:40,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:24:40,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1004188029, now seen corresponding path program 4 times [2023-11-23 15:24:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:24:40,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413994364] [2023-11-23 15:24:40,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:24:40,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:24:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:24:41,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:24:41,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:24:41,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413994364] [2023-11-23 15:24:41,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413994364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:24:41,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:24:41,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 15:24:41,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135592841] [2023-11-23 15:24:41,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:24:41,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 15:24:41,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:24:41,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 15:24:41,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 15:24:41,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2023-11-23 15:24:41,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1023 transitions, 19899 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) [2023-11-23 15:24:41,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:24:41,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2023-11-23 15:24:41,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:24:48,346 INFO L124 PetriNetUnfolderBase]: 9750/18707 cut-off events. [2023-11-23 15:24:48,346 INFO L125 PetriNetUnfolderBase]: For 235264/235306 co-relation queries the response was YES. [2023-11-23 15:24:48,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116415 conditions, 18707 events. 9750/18707 cut-off events. For 235264/235306 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 164346 event pairs, 1220 based on Foata normal form. 14/18677 useless extension candidates. Maximal degree in co-relation 116130. Up to 5463 conditions per place. [2023-11-23 15:24:48,780 INFO L140 encePairwiseOnDemand]: 35/53 looper letters, 620 selfloop transitions, 535 changer transitions 60/1239 dead transitions. [2023-11-23 15:24:48,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1239 transitions, 25231 flow [2023-11-23 15:24:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 15:24:48,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-23 15:24:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 320 transitions. [2023-11-23 15:24:48,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37735849056603776 [2023-11-23 15:24:48,782 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 320 transitions. [2023-11-23 15:24:48,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 320 transitions. [2023-11-23 15:24:48,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:24:48,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 320 transitions. [2023-11-23 15:24:48,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 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) [2023-11-23 15:24:48,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 53.0) internal successors, (901), 17 states have internal predecessors, (901), 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) [2023-11-23 15:24:48,784 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 53.0) internal successors, (901), 17 states have internal predecessors, (901), 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) [2023-11-23 15:24:48,784 INFO L175 Difference]: Start difference. First operand has 384 places, 1023 transitions, 19899 flow. Second operand 16 states and 320 transitions. [2023-11-23 15:24:48,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1239 transitions, 25231 flow [2023-11-23 15:24:51,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1239 transitions, 23602 flow, removed 225 selfloop flow, removed 16 redundant places. [2023-11-23 15:24:52,016 INFO L231 Difference]: Finished difference. Result has 386 places, 1024 transitions, 19937 flow [2023-11-23 15:24:52,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=18545, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1023, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=530, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=19937, PETRI_PLACES=386, PETRI_TRANSITIONS=1024} [2023-11-23 15:24:52,017 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 340 predicate places. [2023-11-23 15:24:52,017 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 1024 transitions, 19937 flow [2023-11-23 15:24:52,017 INFO L496 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) [2023-11-23 15:24:52,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:24:52,017 INFO L208 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] [2023-11-23 15:24:52,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 15:24:52,018 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-23 15:24:52,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:24:52,018 INFO L85 PathProgramCache]: Analyzing trace with hash 723593221, now seen corresponding path program 5 times [2023-11-23 15:24:52,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:24:52,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196136318] [2023-11-23 15:24:52,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:24:52,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:24:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:24:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:24:53,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:24:53,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196136318] [2023-11-23 15:24:53,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196136318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:24:53,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:24:53,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 15:24:53,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475437659] [2023-11-23 15:24:53,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:24:53,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 15:24:53,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:24:53,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 15:24:53,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-23 15:24:53,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 53 [2023-11-23 15:24:53,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 1024 transitions, 19937 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) [2023-11-23 15:24:53,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:24:53,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 53 [2023-11-23 15:24:53,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand