./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_current_pc8736x_gpio_set.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/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_pc8736x_gpio_pc8736x_gpio_current_pc8736x_gpio_set.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.graphml --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 fe55b2f9c4aab8ef897b3db507488ea7950c808c5052f30fdbd219f5b35357b3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 17:24:30,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 17:24:30,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 17:24:30,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 17:24:30,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 17:24:30,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 17:24:30,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 17:24:30,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 17:24:30,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 17:24:30,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 17:24:30,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 17:24:30,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 17:24:30,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 17:24:30,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 17:24:30,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 17:24:30,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 17:24:30,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 17:24:30,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 17:24:30,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 17:24:30,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 17:24:30,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 17:24:30,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 17:24:30,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 17:24:30,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 17:24:30,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 17:24:30,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 17:24:30,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 17:24:30,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 17:24:30,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 17:24:30,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 17:24:30,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 17:24:30,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 17:24:30,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 17:24:30,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 17:24:30,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 17:24:30,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 17:24:30,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 17:24:30,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 17:24:30,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 17:24:30,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 17:24:30,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 17:24:30,810 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 17:24:30,840 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 17:24:30,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 17:24:30,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 17:24:30,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 17:24:30,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 17:24:30,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 17:24:30,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 17:24:30,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 17:24:30,844 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 17:24:30,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 17:24:30,845 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 17:24:30,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 17:24:30,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 17:24:30,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 17:24:30,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 17:24:30,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 17:24:30,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 17:24:30,846 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 17:24:30,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 17:24:30,847 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 17:24:30,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 17:24:30,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 17:24:30,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 17:24:30,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 17:24:30,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:24:30,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 17:24:30,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 17:24:30,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 17:24:30,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 17:24:30,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 17:24:30,849 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 17:24:30,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 17:24:30,849 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 17:24:30,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 17:24:30,850 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 17:24:30,850 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe55b2f9c4aab8ef897b3db507488ea7950c808c5052f30fdbd219f5b35357b3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 17:24:31,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 17:24:31,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 17:24:31,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 17:24:31,177 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 17:24:31,177 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 17:24:31,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_current_pc8736x_gpio_set.i [2023-08-30 17:24:32,243 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:24:32,748 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:24:32,749 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_current_pc8736x_gpio_set.i [2023-08-30 17:24:32,802 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9692e47c/79f1f17f7f0b4c1f92b866b22d04d5cc/FLAG4f0112979 [2023-08-30 17:24:32,821 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9692e47c/79f1f17f7f0b4c1f92b866b22d04d5cc [2023-08-30 17:24:32,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:24:32,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:24:32,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:24:32,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:24:32,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:24:32,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:24:32" (1/1) ... [2023-08-30 17:24:32,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224a7c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:32, skipping insertion in model container [2023-08-30 17:24:32,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:24:32" (1/1) ... [2023-08-30 17:24:32,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:24:32,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:24:33,272 WARN L247 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_pc8736x_gpio_pc8736x_gpio_current_pc8736x_gpio_set.i[5469,5482] [2023-08-30 17:24:35,601 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 17:24:36,161 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:24:36,165 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:24:36,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:24:36,254 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:24:36,278 WARN L247 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_pc8736x_gpio_pc8736x_gpio_current_pc8736x_gpio_set.i[5469,5482] [2023-08-30 17:24:36,446 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 17:24:36,551 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:24:36,551 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:24:36,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:24:37,097 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:24:37,098 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:24:37,098 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:24:37,098 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:24:37,098 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:24:37,098 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:24:37,098 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:24:37,104 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:24:37,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:37 WrapperNode [2023-08-30 17:24:37,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:24:37,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:24:37,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:24:37,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:24:37,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:37" (1/1) ... [2023-08-30 17:24:37,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:37" (1/1) ... [2023-08-30 17:24:37,362 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 51, statements flattened = 693 [2023-08-30 17:24:37,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:24:37,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:24:37,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:24:37,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:24:37,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:37" (1/1) ... [2023-08-30 17:24:37,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:37" (1/1) ... [2023-08-30 17:24:37,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:37" (1/1) ... [2023-08-30 17:24:37,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:37" (1/1) ... [2023-08-30 17:24:37,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:37" (1/1) ... [2023-08-30 17:24:37,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:37" (1/1) ... [2023-08-30 17:24:37,403 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:37" (1/1) ... [2023-08-30 17:24:37,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:37" (1/1) ... [2023-08-30 17:24:37,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:24:37,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:24:37,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:24:37,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:24:37,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:37" (1/1) ... [2023-08-30 17:24:37,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:24:37,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:24:37,444 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) [2023-08-30 17:24:37,467 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 [2023-08-30 17:24:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 17:24:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 17:24:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:24:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 17:24:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_current [2023-08-30 17:24:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_current [2023-08-30 17:24:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:24:37,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:24:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 17:24:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:24:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 17:24:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 17:24:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:24:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 17:24:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_set [2023-08-30 17:24:37,483 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_set [2023-08-30 17:24:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 17:24:37,485 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 17:24:38,032 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:24:38,034 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:24:38,871 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:24:38,883 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:24:38,883 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-08-30 17:24:38,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:24:38 BoogieIcfgContainer [2023-08-30 17:24:38,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:24:38,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:24:38,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:24:38,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:24:38,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:24:32" (1/3) ... [2023-08-30 17:24:38,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37297846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:24:38, skipping insertion in model container [2023-08-30 17:24:38,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:24:37" (2/3) ... [2023-08-30 17:24:38,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37297846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:24:38, skipping insertion in model container [2023-08-30 17:24:38,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:24:38" (3/3) ... [2023-08-30 17:24:38,893 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_current_pc8736x_gpio_set.i [2023-08-30 17:24:38,900 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:24:38,908 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:24:38,908 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-30 17:24:38,908 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:24:39,041 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 17:24:39,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 709 places, 754 transitions, 1524 flow [2023-08-30 17:24:39,352 INFO L130 PetriNetUnfolder]: 52/752 cut-off events. [2023-08-30 17:24:39,352 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 17:24:39,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 752 events. 52/752 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 988 event pairs, 0 based on Foata normal form. 0/697 useless extension candidates. Maximal degree in co-relation 705. Up to 9 conditions per place. [2023-08-30 17:24:39,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 709 places, 754 transitions, 1524 flow [2023-08-30 17:24:39,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 699 places, 744 transitions, 1497 flow [2023-08-30 17:24:39,385 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:24:39,397 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 699 places, 744 transitions, 1497 flow [2023-08-30 17:24:39,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 699 places, 744 transitions, 1497 flow [2023-08-30 17:24:39,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 699 places, 744 transitions, 1497 flow [2023-08-30 17:24:39,560 INFO L130 PetriNetUnfolder]: 52/744 cut-off events. [2023-08-30 17:24:39,560 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 17:24:39,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 744 events. 52/744 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 940 event pairs, 0 based on Foata normal form. 0/689 useless extension candidates. Maximal degree in co-relation 705. Up to 9 conditions per place. [2023-08-30 17:24:39,572 INFO L119 LiptonReduction]: Number of co-enabled transitions 9868 [2023-08-30 17:25:27,698 WARN L222 SmtUtils]: Spent 6.93s on a formula simplification that was a NOOP. DAG size: 227 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:25:57,029 WARN L222 SmtUtils]: Spent 7.21s on a formula simplification that was a NOOP. DAG size: 299 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:26:03,535 WARN L222 SmtUtils]: Spent 6.50s on a formula simplification that was a NOOP. DAG size: 285 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:26:18,955 WARN L222 SmtUtils]: Spent 15.42s on a formula simplification. DAG size of input: 305 DAG size of output: 303 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:26:25,103 WARN L222 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 288 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:27:40,740 WARN L222 SmtUtils]: Spent 1.24m on a formula simplification. DAG size of input: 655 DAG size of output: 653 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:28:11,671 WARN L222 SmtUtils]: Spent 30.90s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:30:36,431 WARN L222 SmtUtils]: Spent 2.41m on a formula simplification. DAG size of input: 658 DAG size of output: 656 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:31:40,429 WARN L222 SmtUtils]: Spent 1.07m on a formula simplification that was a NOOP. DAG size: 584 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:32:04,346 WARN L222 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 298 DAG size of output: 287 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:32:06,267 INFO L134 LiptonReduction]: Checked pairs total: 9086 [2023-08-30 17:32:06,267 INFO L136 LiptonReduction]: Total number of compositions: 836 [2023-08-30 17:32:06,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:32:06,282 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=LoopsAndPotentialCycles, 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;@1e0a355f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:32:06,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 17:32:06,292 INFO L130 PetriNetUnfolder]: 8/14 cut-off events. [2023-08-30 17:32:06,292 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:32:06,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:32:06,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 17:32:06,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:32:06,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:32:06,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2741278, now seen corresponding path program 1 times [2023-08-30 17:32:06,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:32:06,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027771505] [2023-08-30 17:32:06,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:32:06,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:32:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:32:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:32:06,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:32:06,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027771505] [2023-08-30 17:32:06,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027771505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:32:06,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:32:06,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 17:32:06,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506548766] [2023-08-30 17:32:06,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:32:06,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 17:32:06,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:32:06,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 17:32:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 17:32:06,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 718 out of 1590 [2023-08-30 17:32:06,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 52 transitions, 113 flow. Second operand has 2 states, 2 states have (on average 719.5) internal successors, (1439), 2 states have internal predecessors, (1439), 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) [2023-08-30 17:32:06,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:32:06,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 718 of 1590 [2023-08-30 17:32:06,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:32:07,456 INFO L130 PetriNetUnfolder]: 115/225 cut-off events. [2023-08-30 17:32:07,458 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 17:32:07,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 225 events. 115/225 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 668 event pairs, 105 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 394. Up to 226 conditions per place. [2023-08-30 17:32:07,462 INFO L137 encePairwiseOnDemand]: 1577/1590 looper letters, 39 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2023-08-30 17:32:07,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 165 flow [2023-08-30 17:32:07,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 17:32:07,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 17:32:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1488 transitions. [2023-08-30 17:32:07,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679245283018868 [2023-08-30 17:32:07,485 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1488 transitions. [2023-08-30 17:32:07,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1488 transitions. [2023-08-30 17:32:07,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:32:07,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1488 transitions. [2023-08-30 17:32:07,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 744.0) internal successors, (1488), 2 states have internal predecessors, (1488), 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) [2023-08-30 17:32:07,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1590.0) internal successors, (4770), 3 states have internal predecessors, (4770), 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) [2023-08-30 17:32:07,515 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1590.0) internal successors, (4770), 3 states have internal predecessors, (4770), 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) [2023-08-30 17:32:07,516 INFO L175 Difference]: Start difference. First operand has 37 places, 52 transitions, 113 flow. Second operand 2 states and 1488 transitions. [2023-08-30 17:32:07,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 165 flow [2023-08-30 17:32:07,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 17:32:07,522 INFO L231 Difference]: Finished difference. Result has 34 places, 39 transitions, 82 flow [2023-08-30 17:32:07,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1590, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=39} [2023-08-30 17:32:07,526 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-08-30 17:32:07,527 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 39 transitions, 82 flow [2023-08-30 17:32:07,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 719.5) internal successors, (1439), 2 states have internal predecessors, (1439), 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) [2023-08-30 17:32:07,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:32:07,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:32:07,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:32:07,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:32:07,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:32:07,537 INFO L85 PathProgramCache]: Analyzing trace with hash -950288402, now seen corresponding path program 1 times [2023-08-30 17:32:07,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:32:07,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193431596] [2023-08-30 17:32:07,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:32:07,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:32:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:32:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:32:08,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:32:08,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193431596] [2023-08-30 17:32:08,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193431596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:32:08,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:32:08,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:32:08,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285450212] [2023-08-30 17:32:08,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:32:08,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:32:08,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:32:08,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:32:08,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:32:08,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 710 out of 1590 [2023-08-30 17:32:08,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 39 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 712.3333333333334) internal successors, (2137), 3 states have internal predecessors, (2137), 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) [2023-08-30 17:32:08,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:32:08,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 710 of 1590 [2023-08-30 17:32:08,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:32:08,682 INFO L130 PetriNetUnfolder]: 115/226 cut-off events. [2023-08-30 17:32:08,683 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:32:08,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 226 events. 115/226 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 668 event pairs, 105 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 471. Up to 226 conditions per place. [2023-08-30 17:32:08,684 INFO L137 encePairwiseOnDemand]: 1586/1590 looper letters, 38 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-30 17:32:08,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 164 flow [2023-08-30 17:32:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:32:08,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:32:08,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2172 transitions. [2023-08-30 17:32:08,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45534591194968554 [2023-08-30 17:32:08,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2172 transitions. [2023-08-30 17:32:08,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2172 transitions. [2023-08-30 17:32:08,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:32:08,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2172 transitions. [2023-08-30 17:32:08,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 724.0) internal successors, (2172), 3 states have internal predecessors, (2172), 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) [2023-08-30 17:32:08,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1590.0) internal successors, (6360), 4 states have internal predecessors, (6360), 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) [2023-08-30 17:32:08,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1590.0) internal successors, (6360), 4 states have internal predecessors, (6360), 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) [2023-08-30 17:32:08,705 INFO L175 Difference]: Start difference. First operand has 34 places, 39 transitions, 82 flow. Second operand 3 states and 2172 transitions. [2023-08-30 17:32:08,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 164 flow [2023-08-30 17:32:08,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 17:32:08,706 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 96 flow [2023-08-30 17:32:08,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1590, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2023-08-30 17:32:08,707 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-30 17:32:08,708 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 96 flow [2023-08-30 17:32:08,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 712.3333333333334) internal successors, (2137), 3 states have internal predecessors, (2137), 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) [2023-08-30 17:32:08,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:32:08,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:32:08,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 17:32:08,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:32:08,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:32:08,710 INFO L85 PathProgramCache]: Analyzing trace with hash 222415740, now seen corresponding path program 1 times [2023-08-30 17:32:08,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:32:08,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958021966] [2023-08-30 17:32:08,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:32:08,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:32:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:32:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:32:09,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:32:09,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958021966] [2023-08-30 17:32:09,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958021966] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:32:09,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537293209] [2023-08-30 17:32:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:32:09,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:32:09,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:32:09,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:32:09,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 17:32:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:32:09,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 17:32:09,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:32:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 17:32:09,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:32:09,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537293209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:32:09,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:32:09,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 17:32:09,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011053760] [2023-08-30 17:32:09,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:32:09,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:32:09,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:32:09,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:32:09,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 17:32:09,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 700 out of 1590 [2023-08-30 17:32:09,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 702.6666666666666) internal successors, (2108), 3 states have internal predecessors, (2108), 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) [2023-08-30 17:32:09,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:32:09,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 700 of 1590 [2023-08-30 17:32:09,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:32:10,451 INFO L130 PetriNetUnfolder]: 107/222 cut-off events. [2023-08-30 17:32:10,451 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 17:32:10,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 222 events. 107/222 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 720 event pairs, 39 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 469. Up to 133 conditions per place. [2023-08-30 17:32:10,452 INFO L137 encePairwiseOnDemand]: 1587/1590 looper letters, 47 selfloop transitions, 2 changer transitions 3/52 dead transitions. [2023-08-30 17:32:10,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 225 flow [2023-08-30 17:32:10,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:32:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:32:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2152 transitions. [2023-08-30 17:32:10,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511530398322851 [2023-08-30 17:32:10,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2152 transitions. [2023-08-30 17:32:10,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2152 transitions. [2023-08-30 17:32:10,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:32:10,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2152 transitions. [2023-08-30 17:32:10,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 717.3333333333334) internal successors, (2152), 3 states have internal predecessors, (2152), 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) [2023-08-30 17:32:10,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1590.0) internal successors, (6360), 4 states have internal predecessors, (6360), 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) [2023-08-30 17:32:10,478 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1590.0) internal successors, (6360), 4 states have internal predecessors, (6360), 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) [2023-08-30 17:32:10,479 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 96 flow. Second operand 3 states and 2152 transitions. [2023-08-30 17:32:10,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 225 flow [2023-08-30 17:32:10,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 221 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 17:32:10,481 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 104 flow [2023-08-30 17:32:10,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1590, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2023-08-30 17:32:10,483 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-08-30 17:32:10,483 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 104 flow [2023-08-30 17:32:10,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 702.6666666666666) internal successors, (2108), 3 states have internal predecessors, (2108), 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) [2023-08-30 17:32:10,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:32:10,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:32:10,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 17:32:10,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:32:10,694 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:32:10,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:32:10,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1331810217, now seen corresponding path program 1 times [2023-08-30 17:32:10,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:32:10,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209859210] [2023-08-30 17:32:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:32:10,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:32:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:32:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:32:11,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:32:11,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209859210] [2023-08-30 17:32:11,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209859210] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:32:11,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335971964] [2023-08-30 17:32:11,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:32:11,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:32:11,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:32:11,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:32:11,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 17:32:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:32:12,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 17:32:12,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:32:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:32:12,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:32:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:32:13,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335971964] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:32:13,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:32:13,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 17:32:13,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467082779] [2023-08-30 17:32:13,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:32:13,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 17:32:13,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:32:13,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 17:32:13,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-08-30 17:32:13,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 706 out of 1590 [2023-08-30 17:32:13,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 104 flow. Second operand has 8 states, 8 states have (on average 708.125) internal successors, (5665), 8 states have internal predecessors, (5665), 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) [2023-08-30 17:32:13,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:32:13,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 706 of 1590 [2023-08-30 17:32:13,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:32:13,625 INFO L130 PetriNetUnfolder]: 107/227 cut-off events. [2023-08-30 17:32:13,625 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-08-30 17:32:13,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 227 events. 107/227 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 703 event pairs, 97 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 520. Up to 222 conditions per place. [2023-08-30 17:32:13,627 INFO L137 encePairwiseOnDemand]: 1582/1590 looper letters, 38 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2023-08-30 17:32:13,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 212 flow [2023-08-30 17:32:13,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:32:13,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:32:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4291 transitions. [2023-08-30 17:32:13,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44979035639412995 [2023-08-30 17:32:13,637 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4291 transitions. [2023-08-30 17:32:13,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4291 transitions. [2023-08-30 17:32:13,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:32:13,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4291 transitions. [2023-08-30 17:32:13,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 715.1666666666666) internal successors, (4291), 6 states have internal predecessors, (4291), 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) [2023-08-30 17:32:13,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1590.0) internal successors, (11130), 7 states have internal predecessors, (11130), 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) [2023-08-30 17:32:13,662 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1590.0) internal successors, (11130), 7 states have internal predecessors, (11130), 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) [2023-08-30 17:32:13,663 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 104 flow. Second operand 6 states and 4291 transitions. [2023-08-30 17:32:13,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 212 flow [2023-08-30 17:32:13,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 17:32:13,665 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 168 flow [2023-08-30 17:32:13,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1590, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-08-30 17:32:13,666 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2023-08-30 17:32:13,666 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 168 flow [2023-08-30 17:32:13,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 708.125) internal successors, (5665), 8 states have internal predecessors, (5665), 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) [2023-08-30 17:32:13,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:32:13,668 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:32:13,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 17:32:13,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 17:32:13,879 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:32:13,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:32:13,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1702325029, now seen corresponding path program 2 times [2023-08-30 17:32:13,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:32:13,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353709626] [2023-08-30 17:32:13,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:32:13,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:32:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:32:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:32:14,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:32:14,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353709626] [2023-08-30 17:32:14,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353709626] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:32:14,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945997249] [2023-08-30 17:32:14,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:32:14,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:32:14,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:32:14,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:32:14,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 17:32:15,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:32:15,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:32:15,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 17:32:15,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:32:16,142 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 17:32:16,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 41 [2023-08-30 17:32:16,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 17:32:16,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 17:32:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 17:32:16,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:32:16,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945997249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:32:16,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:32:16,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-30 17:32:16,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651525507] [2023-08-30 17:32:16,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:32:16,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 17:32:16,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:32:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 17:32:16,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 17:32:16,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 698 out of 1590 [2023-08-30 17:32:16,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 700.75) internal successors, (2803), 4 states have internal predecessors, (2803), 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) [2023-08-30 17:32:16,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:32:16,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 698 of 1590 [2023-08-30 17:32:16,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:32:17,412 INFO L130 PetriNetUnfolder]: 112/245 cut-off events. [2023-08-30 17:32:17,412 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 17:32:17,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 245 events. 112/245 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 809 event pairs, 66 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 585. Up to 107 conditions per place. [2023-08-30 17:32:17,414 INFO L137 encePairwiseOnDemand]: 1586/1590 looper letters, 48 selfloop transitions, 4 changer transitions 7/59 dead transitions. [2023-08-30 17:32:17,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 321 flow [2023-08-30 17:32:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:32:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:32:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2845 transitions. [2023-08-30 17:32:17,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473270440251572 [2023-08-30 17:32:17,420 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2845 transitions. [2023-08-30 17:32:17,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2845 transitions. [2023-08-30 17:32:17,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:32:17,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2845 transitions. [2023-08-30 17:32:17,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 711.25) internal successors, (2845), 4 states have internal predecessors, (2845), 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) [2023-08-30 17:32:17,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1590.0) internal successors, (7950), 5 states have internal predecessors, (7950), 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) [2023-08-30 17:32:17,436 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1590.0) internal successors, (7950), 5 states have internal predecessors, (7950), 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) [2023-08-30 17:32:17,437 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 168 flow. Second operand 4 states and 2845 transitions. [2023-08-30 17:32:17,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 321 flow [2023-08-30 17:32:17,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 59 transitions, 311 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 17:32:17,439 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 175 flow [2023-08-30 17:32:17,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1590, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2023-08-30 17:32:17,440 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-08-30 17:32:17,440 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 175 flow [2023-08-30 17:32:17,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 700.75) internal successors, (2803), 4 states have internal predecessors, (2803), 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) [2023-08-30 17:32:17,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:32:17,441 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:32:17,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 17:32:17,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:32:17,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:32:17,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:32:17,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1232467913, now seen corresponding path program 1 times [2023-08-30 17:32:17,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:32:17,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572661893] [2023-08-30 17:32:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:32:17,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:32:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:32:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:32:18,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:32:18,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572661893] [2023-08-30 17:32:18,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572661893] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:32:18,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111492195] [2023-08-30 17:32:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:32:18,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:32:18,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:32:18,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:32:18,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 17:32:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:32:19,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 17:32:19,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:32:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:32:19,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:32:20,047 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:32:20,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111492195] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:32:20,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:32:20,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 17:32:20,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898873230] [2023-08-30 17:32:20,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:32:20,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 17:32:20,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:32:20,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 17:32:20,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-08-30 17:32:20,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 704 out of 1590 [2023-08-30 17:32:20,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 175 flow. Second operand has 17 states, 17 states have (on average 705.5882352941177) internal successors, (11995), 17 states have internal predecessors, (11995), 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) [2023-08-30 17:32:20,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:32:20,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 704 of 1590 [2023-08-30 17:32:20,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:32:22,821 INFO L130 PetriNetUnfolder]: 112/254 cut-off events. [2023-08-30 17:32:22,821 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-08-30 17:32:22,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 254 events. 112/254 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 856 event pairs, 102 based on Foata normal form. 9/256 useless extension candidates. Maximal degree in co-relation 646. Up to 240 conditions per place. [2023-08-30 17:32:22,822 INFO L137 encePairwiseOnDemand]: 1582/1590 looper letters, 39 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2023-08-30 17:32:22,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 335 flow [2023-08-30 17:32:22,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 17:32:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 17:32:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 8520 transitions. [2023-08-30 17:32:22,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44654088050314467 [2023-08-30 17:32:22,841 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 8520 transitions. [2023-08-30 17:32:22,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 8520 transitions. [2023-08-30 17:32:22,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:32:22,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 8520 transitions. [2023-08-30 17:32:22,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 710.0) internal successors, (8520), 12 states have internal predecessors, (8520), 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) [2023-08-30 17:32:22,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1590.0) internal successors, (20670), 13 states have internal predecessors, (20670), 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) [2023-08-30 17:32:22,887 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1590.0) internal successors, (20670), 13 states have internal predecessors, (20670), 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) [2023-08-30 17:32:22,887 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 175 flow. Second operand 12 states and 8520 transitions. [2023-08-30 17:32:22,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 335 flow [2023-08-30 17:32:22,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:32:22,894 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 314 flow [2023-08-30 17:32:22,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1590, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=314, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2023-08-30 17:32:22,897 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 27 predicate places. [2023-08-30 17:32:22,897 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 314 flow [2023-08-30 17:32:22,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 705.5882352941177) internal successors, (11995), 17 states have internal predecessors, (11995), 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) [2023-08-30 17:32:22,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:32:22,900 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:32:22,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 17:32:23,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:32:23,112 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:32:23,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:32:23,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1763918583, now seen corresponding path program 2 times [2023-08-30 17:32:23,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:32:23,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089036702] [2023-08-30 17:32:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:32:23,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:32:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:32:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:32:24,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:32:24,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089036702] [2023-08-30 17:32:24,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089036702] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:32:24,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176514005] [2023-08-30 17:32:24,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:32:24,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:32:24,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:32:24,235 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:32:24,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 17:32:25,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:32:25,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:32:25,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 194 conjunts are in the unsatisfiable core [2023-08-30 17:32:25,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:32:25,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:25,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:32:26,038 INFO L217 Elim1Store]: Index analysis took 105 ms [2023-08-30 17:32:32,385 WARN L222 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 1131 DAG size of output: 308 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-30 17:32:32,390 INFO L321 Elim1Store]: treesize reduction 8561, result has 7.7 percent of original size [2023-08-30 17:32:32,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 46 case distinctions, treesize of input 300 treesize of output 941 [2023-08-30 17:32:36,782 INFO L321 Elim1Store]: treesize reduction 83, result has 27.2 percent of original size [2023-08-30 17:32:36,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 393 treesize of output 400 [2023-08-30 17:32:36,890 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 17:32:36,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 347 treesize of output 346 [2023-08-30 17:32:36,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 335 treesize of output 335 [2023-08-30 17:32:36,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 329 treesize of output 329 [2023-08-30 17:32:37,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 323 treesize of output 323 [2023-08-30 17:32:37,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-08-30 17:32:37,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 17:32:37,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 17:32:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 17:32:37,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:32:37,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176514005] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:32:37,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:32:37,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2023-08-30 17:32:37,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853702458] [2023-08-30 17:32:37,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:32:37,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:32:37,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:32:37,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:32:37,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-08-30 17:32:38,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 685 out of 1590 [2023-08-30 17:32:38,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 314 flow. Second operand has 7 states, 7 states have (on average 686.7142857142857) internal successors, (4807), 7 states have internal predecessors, (4807), 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) [2023-08-30 17:32:38,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:32:38,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 685 of 1590 [2023-08-30 17:32:38,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:32:38,691 INFO L130 PetriNetUnfolder]: 104/239 cut-off events. [2023-08-30 17:32:38,691 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-08-30 17:32:38,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 239 events. 104/239 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 773 event pairs, 65 based on Foata normal form. 7/239 useless extension candidates. Maximal degree in co-relation 643. Up to 107 conditions per place. [2023-08-30 17:32:38,692 INFO L137 encePairwiseOnDemand]: 1579/1590 looper letters, 47 selfloop transitions, 10 changer transitions 7/64 dead transitions. [2023-08-30 17:32:38,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 466 flow [2023-08-30 17:32:38,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:32:38,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:32:38,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4159 transitions. [2023-08-30 17:32:38,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4359538784067086 [2023-08-30 17:32:38,702 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4159 transitions. [2023-08-30 17:32:38,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4159 transitions. [2023-08-30 17:32:38,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:32:38,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4159 transitions. [2023-08-30 17:32:38,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 693.1666666666666) internal successors, (4159), 6 states have internal predecessors, (4159), 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) [2023-08-30 17:32:38,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1590.0) internal successors, (11130), 7 states have internal predecessors, (11130), 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) [2023-08-30 17:32:38,736 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1590.0) internal successors, (11130), 7 states have internal predecessors, (11130), 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) [2023-08-30 17:32:38,736 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 314 flow. Second operand 6 states and 4159 transitions. [2023-08-30 17:32:38,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 466 flow [2023-08-30 17:32:38,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 426 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-08-30 17:32:38,741 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 278 flow [2023-08-30 17:32:38,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1590, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2023-08-30 17:32:38,743 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 29 predicate places. [2023-08-30 17:32:38,743 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 278 flow [2023-08-30 17:32:38,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 686.7142857142857) internal successors, (4807), 7 states have internal predecessors, (4807), 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) [2023-08-30 17:32:38,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:32:38,745 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:32:38,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 17:32:38,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:32:38,953 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:32:38,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:32:38,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2055195053, now seen corresponding path program 1 times [2023-08-30 17:32:38,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:32:38,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809208373] [2023-08-30 17:32:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:32:38,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:32:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:32:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:32:40,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:32:40,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809208373] [2023-08-30 17:32:40,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809208373] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:32:40,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582673887] [2023-08-30 17:32:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:32:40,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:32:40,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:32:40,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:32:40,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 17:32:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:32:41,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 17:32:41,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:32:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:32:41,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:32:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:32:42,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582673887] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:32:42,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:32:42,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-30 17:32:42,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500888810] [2023-08-30 17:32:42,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:32:42,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 17:32:42,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:32:42,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 17:32:42,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2023-08-30 17:32:43,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 706 out of 1590 [2023-08-30 17:32:43,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 278 flow. Second operand has 25 states, 25 states have (on average 707.48) internal successors, (17687), 25 states have internal predecessors, (17687), 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) [2023-08-30 17:32:43,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:32:43,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 706 of 1590 [2023-08-30 17:32:43,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:32:53,519 WARN L222 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 17:33:02,730 WARN L222 SmtUtils]: Spent 6.67s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 17:33:11,471 INFO L130 PetriNetUnfolder]: 49/142 cut-off events. [2023-08-30 17:33:11,472 INFO L131 PetriNetUnfolder]: For 1146/1146 co-relation queries the response was YES. [2023-08-30 17:33:11,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 142 events. 49/142 cut-off events. For 1146/1146 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 299 event pairs, 39 based on Foata normal form. 30/167 useless extension candidates. Maximal degree in co-relation 441. Up to 110 conditions per place. [2023-08-30 17:33:11,473 INFO L137 encePairwiseOnDemand]: 1582/1590 looper letters, 35 selfloop transitions, 35 changer transitions 0/70 dead transitions. [2023-08-30 17:33:11,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 70 transitions, 514 flow [2023-08-30 17:33:11,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 17:33:11,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 17:33:11,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 17050 transitions. [2023-08-30 17:33:11,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468029350104822 [2023-08-30 17:33:11,506 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 17050 transitions. [2023-08-30 17:33:11,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 17050 transitions. [2023-08-30 17:33:11,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:33:11,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 17050 transitions. [2023-08-30 17:33:11,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 710.4166666666666) internal successors, (17050), 24 states have internal predecessors, (17050), 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) [2023-08-30 17:33:11,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 1590.0) internal successors, (39750), 25 states have internal predecessors, (39750), 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) [2023-08-30 17:33:11,588 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 1590.0) internal successors, (39750), 25 states have internal predecessors, (39750), 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) [2023-08-30 17:33:11,588 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 278 flow. Second operand 24 states and 17050 transitions. [2023-08-30 17:33:11,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 70 transitions, 514 flow [2023-08-30 17:33:11,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 70 transitions, 492 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 17:33:11,592 INFO L231 Difference]: Finished difference. Result has 95 places, 70 transitions, 544 flow [2023-08-30 17:33:11,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1590, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=544, PETRI_PLACES=95, PETRI_TRANSITIONS=70} [2023-08-30 17:33:11,595 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 58 predicate places. [2023-08-30 17:33:11,595 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 70 transitions, 544 flow [2023-08-30 17:33:11,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 707.48) internal successors, (17687), 25 states have internal predecessors, (17687), 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) [2023-08-30 17:33:11,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:33:11,598 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:33:11,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 17:33:11,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:33:11,812 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:33:11,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:33:11,812 INFO L85 PathProgramCache]: Analyzing trace with hash -101560109, now seen corresponding path program 2 times [2023-08-30 17:33:11,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:33:11,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905791945] [2023-08-30 17:33:11,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:33:11,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:33:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:33:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:33:13,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:33:13,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905791945] [2023-08-30 17:33:13,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905791945] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:33:13,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227035520] [2023-08-30 17:33:13,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:33:13,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:33:13,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:33:13,644 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:33:13,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 17:33:37,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 17:33:37,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:33:37,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-30 17:33:37,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:33:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:33:37,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:33:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:33:39,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227035520] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:33:39,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:33:39,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 69 [2023-08-30 17:33:39,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110477820] [2023-08-30 17:33:39,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:33:39,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-08-30 17:33:39,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:33:39,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-08-30 17:33:39,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1258, Invalid=3572, Unknown=0, NotChecked=0, Total=4830 [2023-08-30 17:33:48,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 706 out of 1590 [2023-08-30 17:33:48,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 70 transitions, 544 flow. Second operand has 70 states, 70 states have (on average 707.1714285714286) internal successors, (49502), 70 states have internal predecessors, (49502), 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) [2023-08-30 17:33:48,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:33:48,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 706 of 1590 [2023-08-30 17:33:48,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:33:56,472 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse7 (mod |c_ULTIMATE.start_external_alloc_~i~0#1| 4294967296)) (.cse5 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 14) 4294967296)) (.cse1 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 15) 4294967296)) (.cse15 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 12) 4294967296)) (.cse6 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 13) 4294967296)) (.cse3 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 8) 4294967296)) (.cse12 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 9) 4294967296)) (.cse17 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 18) 4294967296)) (.cse2 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 16) 4294967296)) (.cse19 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 17) 4294967296)) (.cse18 (mod (+ 19 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296)) (.cse8 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 20) 4294967296)) (.cse9 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 21) 4294967296)) (.cse16 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 1) 4294967296)) (.cse11 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 2) 4294967296)) (.cse21 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 5) 4294967296)) (.cse22 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 6) 4294967296)) (.cse4 (mod (+ 7 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296)) (.cse10 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 3) 4294967296)) (.cse20 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 4) 4294967296)) (.cse13 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 10) 4294967296)) (.cse14 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 11) 4294967296)) (.cse0 (mod |c_ULTIMATE.start_external_alloc_~size#1| 4294967296))) (and (or (<= .cse0 .cse1) (< .cse2 .cse0)) (or (< .cse3 .cse0) (<= .cse0 .cse4)) (or (< .cse5 .cse0) (<= .cse0 .cse6)) (< .cse7 .cse0) (or (<= .cse0 .cse8) (< .cse9 .cse0)) (or (< .cse10 .cse0) (<= .cse0 .cse11)) (or (<= .cse0 .cse12) (< .cse13 .cse0)) (or (<= .cse0 .cse14) (< .cse15 .cse0)) (or (< .cse16 .cse0) (<= .cse0 .cse7)) (or (<= .cse0 .cse5) (< .cse1 .cse0)) (or (<= .cse0 .cse15) (< .cse6 .cse0)) (or (<= .cse0 .cse3) (< .cse12 .cse0)) (or (<= .cse0 .cse17) (< .cse18 .cse0)) (or (<= .cse0 .cse19) (< .cse17 .cse0)) (or (<= .cse0 .cse2) (< .cse19 .cse0)) (or (<= .cse0 .cse20) (< .cse21 .cse0)) (or (<= .cse0 .cse18) (< .cse8 .cse0)) (or (<= .cse0 .cse9) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 22) 4294967296) .cse0)) (or (<= .cse0 .cse16) (< .cse11 .cse0)) (or (< .cse22 .cse0) (<= .cse0 .cse21)) (or (<= .cse0 .cse22) (< .cse4 .cse0)) (or (<= .cse0 .cse10) (< .cse20 .cse0)) (or (<= .cse0 .cse13) (< .cse14 .cse0)))) is different from false [2023-08-30 17:37:34,893 WARN L222 SmtUtils]: Spent 3.16m on a formula simplification. DAG size of input: 133 DAG size of output: 91 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 17:37:36,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15