./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 TOGETHER --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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:48:18,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:48:18,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:48:18,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:48:18,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:48:18,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:48:18,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:48:18,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:48:18,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:48:18,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:48:18,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:48:18,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:48:18,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:48:18,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:48:18,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:48:18,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:48:18,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:48:18,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:48:18,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:48:18,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:48:18,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:48:18,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:48:18,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:48:18,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:48:18,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:48:18,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:48:18,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:48:18,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:48:18,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:48:18,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:48:18,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:48:18,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:48:18,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:48:18,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:48:18,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:48:18,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:48:18,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:48:18,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:48:18,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:48:18,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:48:18,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:48:18,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:48:18,589 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:48:18,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:48:18,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:48:18,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:48:18,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:48:18,591 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:48:18,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:48:18,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:48:18,592 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:48:18,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:48:18,593 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:48:18,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:48:18,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:48:18,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:48:18,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:48:18,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:48:18,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:48:18,594 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:48:18,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:48:18,594 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:48:18,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:48:18,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:48:18,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:48:18,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:48:18,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:48:18,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:48:18,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:48:18,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:48:18,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:48:18,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:48:18,596 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:48:18,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:48:18,596 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:48:18,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:48:18,597 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:48:18,597 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe55b2f9c4aab8ef897b3db507488ea7950c808c5052f30fdbd219f5b35357b3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:48:18,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:48:18,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:48:18,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:48:18,882 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:48:18,882 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:48:18,883 INFO L432 ainManager$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 23:48:19,920 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:48:20,286 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:48:20,286 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 23:48:20,315 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cbcdee6d/e66b37e1980f49ca8431966ef0fc51ff/FLAG9e6b63762 [2023-08-30 23:48:20,324 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cbcdee6d/e66b37e1980f49ca8431966ef0fc51ff [2023-08-30 23:48:20,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:48:20,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:48:20,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:48:20,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:48:20,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:48:20,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:48:20" (1/1) ... [2023-08-30 23:48:20,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332a81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:20, skipping insertion in model container [2023-08-30 23:48:20,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:48:20" (1/1) ... [2023-08-30 23:48:20,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:48:20,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:48:20,645 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 23:48:22,660 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 23:48:23,100 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:48:23,101 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:48:23,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:48:23,174 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:48:23,200 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 23:48:23,336 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 23:48:23,393 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:48:23,394 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:48:23,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:48:23,928 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:48:23,928 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:48:23,928 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:48:23,928 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:48:23,928 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:48:23,929 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:48:23,929 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:48:23,933 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:48:23,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:23 WrapperNode [2023-08-30 23:48:23,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:48:23,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:48:23,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:48:23,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:48:23,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:23" (1/1) ... [2023-08-30 23:48:24,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:23" (1/1) ... [2023-08-30 23:48:24,083 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 51, statements flattened = 693 [2023-08-30 23:48:24,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:48:24,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:48:24,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:48:24,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:48:24,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:23" (1/1) ... [2023-08-30 23:48:24,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:23" (1/1) ... [2023-08-30 23:48:24,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:23" (1/1) ... [2023-08-30 23:48:24,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:23" (1/1) ... [2023-08-30 23:48:24,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:23" (1/1) ... [2023-08-30 23:48:24,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:23" (1/1) ... [2023-08-30 23:48:24,123 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:23" (1/1) ... [2023-08-30 23:48:24,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:23" (1/1) ... [2023-08-30 23:48:24,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:48:24,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:48:24,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:48:24,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:48:24,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:23" (1/1) ... [2023-08-30 23:48:24,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:48:24,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:48:24,153 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 23:48:24,168 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 23:48:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 23:48:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 23:48:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:48:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 23:48:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_current [2023-08-30 23:48:24,180 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_current [2023-08-30 23:48:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:48:24,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:48:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 23:48:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:48:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 23:48:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:48:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:48:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 23:48:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_set [2023-08-30 23:48:24,181 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_set [2023-08-30 23:48:24,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:48:24,183 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 23:48:24,556 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:48:24,557 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:48:25,164 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:48:25,173 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:48:25,173 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-08-30 23:48:25,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:48:25 BoogieIcfgContainer [2023-08-30 23:48:25,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:48:25,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:48:25,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:48:25,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:48:25,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:48:20" (1/3) ... [2023-08-30 23:48:25,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7c1307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:48:25, skipping insertion in model container [2023-08-30 23:48:25,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:23" (2/3) ... [2023-08-30 23:48:25,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7c1307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:48:25, skipping insertion in model container [2023-08-30 23:48:25,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:48:25" (3/3) ... [2023-08-30 23:48:25,181 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_current_pc8736x_gpio_set.i [2023-08-30 23:48:25,186 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:48:25,201 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:48:25,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-30 23:48:25,201 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:48:25,387 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 23:48:25,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 709 places, 754 transitions, 1524 flow [2023-08-30 23:48:25,590 INFO L130 PetriNetUnfolder]: 52/752 cut-off events. [2023-08-30 23:48:25,590 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 23:48:25,598 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 23:48:25,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 709 places, 754 transitions, 1524 flow [2023-08-30 23:48:25,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 699 places, 744 transitions, 1497 flow [2023-08-30 23:48:25,612 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:48:25,622 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 699 places, 744 transitions, 1497 flow [2023-08-30 23:48:25,628 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 699 places, 744 transitions, 1497 flow [2023-08-30 23:48:25,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 699 places, 744 transitions, 1497 flow [2023-08-30 23:48:25,710 INFO L130 PetriNetUnfolder]: 52/744 cut-off events. [2023-08-30 23:48:25,711 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 23:48:25,714 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 23:48:25,719 INFO L119 LiptonReduction]: Number of co-enabled transitions 9868 [2023-08-30 23:49:07,543 WARN L222 SmtUtils]: Spent 6.89s 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 23:49:36,718 WARN L222 SmtUtils]: Spent 7.37s 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 23:49:43,106 WARN L222 SmtUtils]: Spent 6.39s 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 23:49:58,459 WARN L222 SmtUtils]: Spent 15.35s 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 23:50:04,650 WARN L222 SmtUtils]: Spent 6.19s 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 23:51:20,955 WARN L222 SmtUtils]: Spent 1.25m 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 23:51:51,439 WARN L222 SmtUtils]: Spent 30.47s 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 23:54:13,549 WARN L222 SmtUtils]: Spent 2.37m 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 23:55:15,288 WARN L222 SmtUtils]: Spent 1.03m 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 23:55:37,741 WARN L222 SmtUtils]: Spent 6.40s 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 23:55:39,600 INFO L134 LiptonReduction]: Checked pairs total: 9086 [2023-08-30 23:55:39,600 INFO L136 LiptonReduction]: Total number of compositions: 836 [2023-08-30 23:55:39,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:55:39,611 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;@68a5e3d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:55:39,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 23:55:39,617 INFO L130 PetriNetUnfolder]: 8/14 cut-off events. [2023-08-30 23:55:39,618 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:55:39,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:55:39,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 23:55:39,618 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 23:55:39,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:55:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2741278, now seen corresponding path program 1 times [2023-08-30 23:55:39,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:55:39,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021106751] [2023-08-30 23:55:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:55:39,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:55:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:55:39,968 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 23:55:39,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:55:39,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021106751] [2023-08-30 23:55:39,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021106751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:55:39,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:55:39,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:55:39,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419500687] [2023-08-30 23:55:39,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:55:39,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 23:55:39,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:55:39,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 23:55:39,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 23:55:40,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 718 out of 1590 [2023-08-30 23:55:40,030 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 23:55:40,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:55:40,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 718 of 1590 [2023-08-30 23:55:40,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:55:40,439 INFO L130 PetriNetUnfolder]: 115/225 cut-off events. [2023-08-30 23:55:40,440 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 23:55:40,440 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 23:55:40,441 INFO L137 encePairwiseOnDemand]: 1577/1590 looper letters, 39 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2023-08-30 23:55:40,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 165 flow [2023-08-30 23:55:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 23:55:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 23:55:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1488 transitions. [2023-08-30 23:55:40,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679245283018868 [2023-08-30 23:55:40,456 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1488 transitions. [2023-08-30 23:55:40,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1488 transitions. [2023-08-30 23:55:40,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:55:40,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1488 transitions. [2023-08-30 23:55:40,468 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 23:55:40,476 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 23:55:40,478 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 23:55:40,479 INFO L175 Difference]: Start difference. First operand has 37 places, 52 transitions, 113 flow. Second operand 2 states and 1488 transitions. [2023-08-30 23:55:40,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 165 flow [2023-08-30 23:55:40,481 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 23:55:40,482 INFO L231 Difference]: Finished difference. Result has 34 places, 39 transitions, 82 flow [2023-08-30 23:55:40,483 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 23:55:40,486 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-08-30 23:55:40,486 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 39 transitions, 82 flow [2023-08-30 23:55:40,487 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 23:55:40,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:55:40,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:55:40,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:55:40,487 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 23:55:40,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:55:40,488 INFO L85 PathProgramCache]: Analyzing trace with hash -950288402, now seen corresponding path program 1 times [2023-08-30 23:55:40,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:55:40,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705609778] [2023-08-30 23:55:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:55:40,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:55:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:55:40,995 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 23:55:40,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:55:40,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705609778] [2023-08-30 23:55:40,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705609778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:55:40,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:55:40,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:55:40,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197786352] [2023-08-30 23:55:40,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:55:40,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:55:40,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:55:41,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:55:41,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:55:41,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 710 out of 1590 [2023-08-30 23:55:41,037 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 23:55:41,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:55:41,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 710 of 1590 [2023-08-30 23:55:41,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:55:41,236 INFO L130 PetriNetUnfolder]: 115/226 cut-off events. [2023-08-30 23:55:41,237 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:55:41,237 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 23:55:41,238 INFO L137 encePairwiseOnDemand]: 1586/1590 looper letters, 38 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-30 23:55:41,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 164 flow [2023-08-30 23:55:41,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:55:41,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:55:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2172 transitions. [2023-08-30 23:55:41,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45534591194968554 [2023-08-30 23:55:41,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2172 transitions. [2023-08-30 23:55:41,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2172 transitions. [2023-08-30 23:55:41,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:55:41,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2172 transitions. [2023-08-30 23:55:41,247 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 23:55:41,253 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 23:55:41,255 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 23:55:41,255 INFO L175 Difference]: Start difference. First operand has 34 places, 39 transitions, 82 flow. Second operand 3 states and 2172 transitions. [2023-08-30 23:55:41,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 164 flow [2023-08-30 23:55:41,255 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 23:55:41,256 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 96 flow [2023-08-30 23:55:41,256 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 23:55:41,257 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-30 23:55:41,257 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 96 flow [2023-08-30 23:55:41,259 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 23:55:41,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:55:41,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:55:41,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:55:41,260 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 23:55:41,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:55:41,262 INFO L85 PathProgramCache]: Analyzing trace with hash 222415740, now seen corresponding path program 1 times [2023-08-30 23:55:41,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:55:41,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155040472] [2023-08-30 23:55:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:55:41,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:55:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:55:41,659 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 23:55:41,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:55:41,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155040472] [2023-08-30 23:55:41,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155040472] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:55:41,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384742312] [2023-08-30 23:55:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:55:41,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:55:41,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:55:41,662 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 23:55:41,663 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 23:55:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:55:42,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 23:55:42,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:55:42,119 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 23:55:42,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:55:42,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384742312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:55:42,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:55:42,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 23:55:42,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845845565] [2023-08-30 23:55:42,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:55:42,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:55:42,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:55:42,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:55:42,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:55:42,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 700 out of 1590 [2023-08-30 23:55:42,215 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 23:55:42,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:55:42,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 700 of 1590 [2023-08-30 23:55:42,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:55:42,534 INFO L130 PetriNetUnfolder]: 107/222 cut-off events. [2023-08-30 23:55:42,534 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 23:55:42,535 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 23:55:42,535 INFO L137 encePairwiseOnDemand]: 1587/1590 looper letters, 47 selfloop transitions, 2 changer transitions 3/52 dead transitions. [2023-08-30 23:55:42,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 225 flow [2023-08-30 23:55:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:55:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:55:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2152 transitions. [2023-08-30 23:55:42,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511530398322851 [2023-08-30 23:55:42,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2152 transitions. [2023-08-30 23:55:42,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2152 transitions. [2023-08-30 23:55:42,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:55:42,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2152 transitions. [2023-08-30 23:55:42,543 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 23:55:42,549 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 23:55:42,551 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 23:55:42,551 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 96 flow. Second operand 3 states and 2152 transitions. [2023-08-30 23:55:42,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 225 flow [2023-08-30 23:55:42,552 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 23:55:42,553 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 104 flow [2023-08-30 23:55:42,553 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 23:55:42,553 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-08-30 23:55:42,553 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 104 flow [2023-08-30 23:55:42,555 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 23:55:42,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:55:42,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:55:42,565 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 23:55:42,762 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 23:55:42,763 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 23:55:42,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:55:42,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1331810217, now seen corresponding path program 1 times [2023-08-30 23:55:42,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:55:42,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712426673] [2023-08-30 23:55:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:55:42,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:55:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:55:43,195 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 23:55:43,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:55:43,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712426673] [2023-08-30 23:55:43,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712426673] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:55:43,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545155455] [2023-08-30 23:55:43,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:55:43,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:55:43,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:55:43,201 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 23:55:43,203 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 23:55:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:55:44,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 23:55:44,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:55:44,152 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 23:55:44,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:55:44,367 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 23:55:44,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545155455] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:55:44,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:55:44,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 23:55:44,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723303407] [2023-08-30 23:55:44,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:55:44,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:55:44,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:55:44,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:55:44,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:55:44,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 706 out of 1590 [2023-08-30 23:55:44,444 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 23:55:44,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:55:44,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 706 of 1590 [2023-08-30 23:55:44,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:55:44,819 INFO L130 PetriNetUnfolder]: 107/227 cut-off events. [2023-08-30 23:55:44,820 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-08-30 23:55:44,820 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 23:55:44,821 INFO L137 encePairwiseOnDemand]: 1582/1590 looper letters, 38 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2023-08-30 23:55:44,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 212 flow [2023-08-30 23:55:44,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:55:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:55:44,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4291 transitions. [2023-08-30 23:55:44,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44979035639412995 [2023-08-30 23:55:44,828 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4291 transitions. [2023-08-30 23:55:44,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4291 transitions. [2023-08-30 23:55:44,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:55:44,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4291 transitions. [2023-08-30 23:55:44,835 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 23:55:44,843 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 23:55:44,845 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 23:55:44,845 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 104 flow. Second operand 6 states and 4291 transitions. [2023-08-30 23:55:44,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 212 flow [2023-08-30 23:55:44,846 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 23:55:44,846 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 168 flow [2023-08-30 23:55:44,846 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 23:55:44,847 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2023-08-30 23:55:44,847 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 168 flow [2023-08-30 23:55:44,849 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 23:55:44,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:55:44,849 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:55:44,860 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 23:55:45,058 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 23:55:45,058 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 23:55:45,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:55:45,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1702325029, now seen corresponding path program 2 times [2023-08-30 23:55:45,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:55:45,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61715892] [2023-08-30 23:55:45,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:55:45,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:55:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:55:45,558 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 23:55:45,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:55:45,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61715892] [2023-08-30 23:55:45,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61715892] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:55:45,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790294353] [2023-08-30 23:55:45,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 23:55:45,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:55:45,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:55:45,562 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 23:55:45,564 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 23:55:46,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 23:55:46,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 23:55:46,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 23:55:46,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:55:46,515 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 23:55:46,516 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 23:55:46,521 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 23:55:46,635 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 23:55:46,699 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 23:55:46,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:55:46,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790294353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:55:46,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:55:46,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-30 23:55:46,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033869963] [2023-08-30 23:55:46,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:55:46,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:55:46,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:55:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:55:46,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 23:55:46,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 698 out of 1590 [2023-08-30 23:55:46,847 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 23:55:46,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:55:46,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 698 of 1590 [2023-08-30 23:55:46,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:55:47,487 INFO L130 PetriNetUnfolder]: 112/245 cut-off events. [2023-08-30 23:55:47,488 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 23:55:47,488 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 23:55:47,489 INFO L137 encePairwiseOnDemand]: 1586/1590 looper letters, 48 selfloop transitions, 4 changer transitions 7/59 dead transitions. [2023-08-30 23:55:47,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 321 flow [2023-08-30 23:55:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:55:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:55:47,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2845 transitions. [2023-08-30 23:55:47,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473270440251572 [2023-08-30 23:55:47,494 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2845 transitions. [2023-08-30 23:55:47,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2845 transitions. [2023-08-30 23:55:47,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:55:47,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2845 transitions. [2023-08-30 23:55:47,498 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 23:55:47,503 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 23:55:47,504 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 23:55:47,504 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 168 flow. Second operand 4 states and 2845 transitions. [2023-08-30 23:55:47,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 321 flow [2023-08-30 23:55:47,505 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 23:55:47,506 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 175 flow [2023-08-30 23:55:47,506 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 23:55:47,506 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-08-30 23:55:47,507 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 175 flow [2023-08-30 23:55:47,507 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 23:55:47,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:55:47,507 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:55:47,519 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 23:55:47,716 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 23:55:47,716 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 23:55:47,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:55:47,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1232467913, now seen corresponding path program 1 times [2023-08-30 23:55:47,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:55:47,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393481022] [2023-08-30 23:55:47,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:55:47,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:55:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:55:48,325 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 23:55:48,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:55:48,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393481022] [2023-08-30 23:55:48,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393481022] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:55:48,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753991733] [2023-08-30 23:55:48,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:55:48,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:55:48,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:55:48,327 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 23:55:48,329 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 23:55:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:55:49,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 23:55:49,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:55:49,160 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 23:55:49,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:55:49,389 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 23:55:49,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753991733] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:55:49,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:55:49,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 23:55:49,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629355106] [2023-08-30 23:55:49,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:55:49,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 23:55:49,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:55:49,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 23:55:49,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-08-30 23:55:49,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 704 out of 1590 [2023-08-30 23:55:49,860 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 23:55:49,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:55:49,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 704 of 1590 [2023-08-30 23:55:49,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:55:51,585 INFO L130 PetriNetUnfolder]: 112/254 cut-off events. [2023-08-30 23:55:51,585 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-08-30 23:55:51,586 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 23:55:51,586 INFO L137 encePairwiseOnDemand]: 1582/1590 looper letters, 39 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2023-08-30 23:55:51,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 335 flow [2023-08-30 23:55:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 23:55:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 23:55:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 8520 transitions. [2023-08-30 23:55:51,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44654088050314467 [2023-08-30 23:55:51,599 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 8520 transitions. [2023-08-30 23:55:51,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 8520 transitions. [2023-08-30 23:55:51,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:55:51,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 8520 transitions. [2023-08-30 23:55:51,611 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 23:55:51,624 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 23:55:51,626 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 23:55:51,627 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 175 flow. Second operand 12 states and 8520 transitions. [2023-08-30 23:55:51,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 335 flow [2023-08-30 23:55:51,628 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 23:55:51,629 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 314 flow [2023-08-30 23:55:51,629 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 23:55:51,630 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 27 predicate places. [2023-08-30 23:55:51,630 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 314 flow [2023-08-30 23:55:51,632 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 23:55:51,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:55:51,632 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:55:51,655 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 23:55:51,845 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 23:55:51,845 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 23:55:51,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:55:51,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1763918583, now seen corresponding path program 2 times [2023-08-30 23:55:51,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:55:51,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312830437] [2023-08-30 23:55:51,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:55:51,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:55:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:55:52,742 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 23:55:52,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:55:52,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312830437] [2023-08-30 23:55:52,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312830437] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:55:52,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361122692] [2023-08-30 23:55:52,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 23:55:52,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:55:52,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:55:52,745 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 23:55:52,747 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 23:55:54,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 23:55:54,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 23:55:54,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 194 conjunts are in the unsatisfiable core [2023-08-30 23:55:54,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:55:54,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:54,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:55:59,230 INFO L321 Elim1Store]: treesize reduction 8561, result has 7.7 percent of original size [2023-08-30 23:55:59,232 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 23:56:02,813 INFO L321 Elim1Store]: treesize reduction 83, result has 27.2 percent of original size [2023-08-30 23:56:02,813 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 23:56:02,893 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 23:56:02,893 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 23:56:02,922 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 23:56:02,953 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 23:56:02,982 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 23:56:03,213 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 23:56:03,400 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 23:56:03,454 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 23:56:03,489 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 23:56:03,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:56:03,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361122692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:56:03,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:56:03,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2023-08-30 23:56:03,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135950783] [2023-08-30 23:56:03,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:56:03,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:56:03,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:56:03,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:56:03,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-08-30 23:56:03,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 685 out of 1590 [2023-08-30 23:56:03,957 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 23:56:03,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:56:03,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 685 of 1590 [2023-08-30 23:56:03,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:56:04,341 INFO L130 PetriNetUnfolder]: 104/239 cut-off events. [2023-08-30 23:56:04,342 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-08-30 23:56:04,342 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 23:56:04,343 INFO L137 encePairwiseOnDemand]: 1579/1590 looper letters, 47 selfloop transitions, 10 changer transitions 7/64 dead transitions. [2023-08-30 23:56:04,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 466 flow [2023-08-30 23:56:04,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:56:04,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:56:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4159 transitions. [2023-08-30 23:56:04,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4359538784067086 [2023-08-30 23:56:04,349 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4159 transitions. [2023-08-30 23:56:04,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4159 transitions. [2023-08-30 23:56:04,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:56:04,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4159 transitions. [2023-08-30 23:56:04,356 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 23:56:04,362 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 23:56:04,363 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 23:56:04,363 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 314 flow. Second operand 6 states and 4159 transitions. [2023-08-30 23:56:04,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 466 flow [2023-08-30 23:56:04,365 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 23:56:04,366 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 278 flow [2023-08-30 23:56:04,366 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 23:56:04,366 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 29 predicate places. [2023-08-30 23:56:04,366 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 278 flow [2023-08-30 23:56:04,367 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 23:56:04,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:56:04,367 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:56:04,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 23:56:04,576 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 23:56:04,577 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 23:56:04,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:56:04,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2055195053, now seen corresponding path program 1 times [2023-08-30 23:56:04,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:56:04,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126519384] [2023-08-30 23:56:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:56:04,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:56:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:56:05,478 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 23:56:05,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:56:05,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126519384] [2023-08-30 23:56:05,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126519384] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:56:05,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305396938] [2023-08-30 23:56:05,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:56:05,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:56:05,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:56:05,480 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 23:56:05,482 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 23:56:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:56:06,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 23:56:06,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:56:06,791 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 23:56:06,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:56:07,101 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 23:56:07,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305396938] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:56:07,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:56:07,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-30 23:56:07,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913543452] [2023-08-30 23:56:07,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:56:07,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 23:56:07,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:56:07,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 23:56:07,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2023-08-30 23:56:07,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 706 out of 1590 [2023-08-30 23:56:07,907 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 23:56:07,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:56:07,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 706 of 1590 [2023-08-30 23:56:07,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:56:18,051 WARN L222 SmtUtils]: Spent 5.75s 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 23:56:31,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 23:56:32,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 23:56:33,783 INFO L130 PetriNetUnfolder]: 49/142 cut-off events. [2023-08-30 23:56:33,783 INFO L131 PetriNetUnfolder]: For 1146/1146 co-relation queries the response was YES. [2023-08-30 23:56:33,783 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 23:56:33,784 INFO L137 encePairwiseOnDemand]: 1582/1590 looper letters, 35 selfloop transitions, 35 changer transitions 0/70 dead transitions. [2023-08-30 23:56:33,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 70 transitions, 514 flow [2023-08-30 23:56:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 23:56:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 23:56:33,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 17050 transitions. [2023-08-30 23:56:33,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468029350104822 [2023-08-30 23:56:33,803 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 17050 transitions. [2023-08-30 23:56:33,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 17050 transitions. [2023-08-30 23:56:33,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:56:33,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 17050 transitions. [2023-08-30 23:56:33,826 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 23:56:33,848 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 23:56:33,851 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 23:56:33,851 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 278 flow. Second operand 24 states and 17050 transitions. [2023-08-30 23:56:33,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 70 transitions, 514 flow [2023-08-30 23:56:33,854 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 23:56:33,855 INFO L231 Difference]: Finished difference. Result has 95 places, 70 transitions, 544 flow [2023-08-30 23:56:33,855 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 23:56:33,857 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 58 predicate places. [2023-08-30 23:56:33,857 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 70 transitions, 544 flow [2023-08-30 23:56:33,860 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 23:56:33,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:56:33,860 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:56:33,877 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 23:56:34,077 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 23:56:34,077 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 23:56:34,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:56:34,078 INFO L85 PathProgramCache]: Analyzing trace with hash -101560109, now seen corresponding path program 2 times [2023-08-30 23:56:34,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:56:34,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547757647] [2023-08-30 23:56:34,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:56:34,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:56:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:56:35,572 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 23:56:35,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:56:35,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547757647] [2023-08-30 23:56:35,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547757647] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:56:35,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428435607] [2023-08-30 23:56:35,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 23:56:35,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:56:35,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:56:35,576 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 23:56:35,593 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 23:56:56,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 23:56:56,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 23:56:56,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-30 23:56:56,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:56:56,903 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 23:56:56,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:56:58,467 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 23:56:58,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428435607] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:56:58,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:56:58,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 69 [2023-08-30 23:56:58,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492888652] [2023-08-30 23:56:58,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:56:58,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-08-30 23:56:58,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:56:58,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-08-30 23:56:58,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1258, Invalid=3572, Unknown=0, NotChecked=0, Total=4830 [2023-08-30 23:57:07,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 706 out of 1590 [2023-08-30 23:57:07,331 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 23:57:07,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:57:07,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 706 of 1590 [2023-08-30 23:57:07,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:57:13,480 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 23:57:15,491 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)) (.cse14 (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)) (.cse11 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 9) 4294967296)) (.cse16 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 18) 4294967296)) (.cse2 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 16) 4294967296)) (.cse18 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 17) 4294967296)) (.cse17 (mod (+ 19 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296)) (.cse8 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 20) 4294967296)) (.cse15 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 1) 4294967296)) (.cse10 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 2) 4294967296)) (.cse20 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 5) 4294967296)) (.cse21 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 6) 4294967296)) (.cse4 (mod (+ 7 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296)) (.cse9 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 3) 4294967296)) (.cse19 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 4) 4294967296)) (.cse12 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 10) 4294967296)) (.cse13 (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) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 21) 4294967296) .cse0)) (or (< .cse9 .cse0) (<= .cse0 .cse10)) (or (<= .cse0 .cse11) (< .cse12 .cse0)) (or (<= .cse0 .cse13) (< .cse14 .cse0)) (or (< .cse15 .cse0) (<= .cse0 .cse7)) (or (<= .cse0 .cse5) (< .cse1 .cse0)) (or (<= .cse0 .cse14) (< .cse6 .cse0)) (or (<= .cse0 .cse3) (< .cse11 .cse0)) (or (<= .cse0 .cse16) (< .cse17 .cse0)) (or (<= .cse0 .cse18) (< .cse16 .cse0)) (or (<= .cse0 .cse2) (< .cse18 .cse0)) (or (<= .cse0 .cse19) (< .cse20 .cse0)) (or (<= .cse0 .cse17) (< .cse8 .cse0)) (or (<= .cse0 .cse15) (< .cse10 .cse0)) (or (< .cse21 .cse0) (<= .cse0 .cse20)) (or (<= .cse0 .cse21) (< .cse4 .cse0)) (or (<= .cse0 .cse9) (< .cse19 .cse0)) (or (<= .cse0 .cse12) (< .cse13 .cse0)))) is different from false [2023-08-30 23:57:17,502 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)) (.cse13 (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)) (.cse10 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 9) 4294967296)) (.cse15 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 18) 4294967296)) (.cse2 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 16) 4294967296)) (.cse17 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 17) 4294967296)) (.cse16 (mod (+ 19 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296)) (.cse14 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 1) 4294967296)) (.cse9 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 2) 4294967296)) (.cse19 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 5) 4294967296)) (.cse20 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 6) 4294967296)) (.cse4 (mod (+ 7 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296)) (.cse8 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 3) 4294967296)) (.cse18 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 4) 4294967296)) (.cse11 (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 10) 4294967296)) (.cse12 (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 (< .cse8 .cse0) (<= .cse0 .cse9)) (or (<= .cse0 .cse10) (< .cse11 .cse0)) (or (<= .cse0 .cse12) (< .cse13 .cse0)) (or (< .cse14 .cse0) (<= .cse0 .cse7)) (or (<= .cse0 .cse5) (< .cse1 .cse0)) (or (<= .cse0 .cse13) (< .cse6 .cse0)) (or (<= .cse0 .cse3) (< .cse10 .cse0)) (or (<= .cse0 .cse15) (< .cse16 .cse0)) (or (<= .cse0 .cse17) (< .cse15 .cse0)) (or (<= .cse0 .cse2) (< .cse17 .cse0)) (or (<= .cse0 .cse18) (< .cse19 .cse0)) (or (<= .cse0 .cse16) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 20) 4294967296) .cse0)) (or (<= .cse0 .cse14) (< .cse9 .cse0)) (or (< .cse20 .cse0) (<= .cse0 .cse19)) (or (<= .cse0 .cse20) (< .cse4 .cse0)) (or (<= .cse0 .cse8) (< .cse18 .cse0)) (or (<= .cse0 .cse11) (< .cse12 .cse0)))) is different from false [2023-08-31 00:01:39,650 WARN L222 SmtUtils]: Spent 3.81m on a formula simplification. DAG size of input: 136 DAG size of output: 106 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Killed by 15