./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_set.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_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 7e42125d78d2e647b04483b10b743ce53945c41f6200d87cdd62381d378c13a7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 17:18:47,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 17:18:47,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 17:18:47,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 17:18:47,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 17:18:47,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 17:18:47,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 17:18:47,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 17:18:47,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 17:18:47,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 17:18:47,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 17:18:47,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 17:18:47,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 17:18:47,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 17:18:47,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 17:18:47,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 17:18:47,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 17:18:47,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 17:18:47,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 17:18:47,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 17:18:47,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 17:18:47,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 17:18:47,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 17:18:47,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 17:18:47,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 17:18:47,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 17:18:47,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 17:18:47,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 17:18:47,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 17:18:47,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 17:18:47,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 17:18:47,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 17:18:47,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 17:18:47,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 17:18:47,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 17:18:47,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 17:18:47,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 17:18:47,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 17:18:47,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 17:18:47,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 17:18:47,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 17:18:47,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 17:18:47,759 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 17:18:47,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 17:18:47,760 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 17:18:47,760 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 17:18:47,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 17:18:47,761 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 17:18:47,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 17:18:47,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 17:18:47,762 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 17:18:47,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 17:18:47,763 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 17:18:47,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 17:18:47,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 17:18:47,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 17:18:47,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 17:18:47,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 17:18:47,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 17:18:47,764 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 17:18:47,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 17:18:47,765 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 17:18:47,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 17:18:47,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 17:18:47,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 17:18:47,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 17:18:47,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:18:47,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 17:18:47,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 17:18:47,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 17:18:47,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 17:18:47,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 17:18:47,767 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 17:18:47,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 17:18:47,768 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 17:18:47,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 17:18:47,768 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 17:18:47,773 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e42125d78d2e647b04483b10b743ce53945c41f6200d87cdd62381d378c13a7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 17:18:48,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 17:18:48,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 17:18:48,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 17:18:48,107 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 17:18:48,108 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 17:18:48,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_set.i [2023-08-30 17:18:49,248 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:18:50,178 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:18:50,178 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_set.i [2023-08-30 17:18:50,216 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad5d31f73/195d1cfe15174848822c268edda58eca/FLAGda12f25de [2023-08-30 17:18:50,241 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad5d31f73/195d1cfe15174848822c268edda58eca [2023-08-30 17:18:50,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:18:50,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:18:50,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:18:50,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:18:50,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:18:50,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:18:50" (1/1) ... [2023-08-30 17:18:50,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fbd4dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:50, skipping insertion in model container [2023-08-30 17:18:50,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:18:50" (1/1) ... [2023-08-30 17:18:50,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:18:50,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:18:50,697 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_change_pc8736x_gpio_set.i[5469,5482] [2023-08-30 17:18:53,168 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 17:18:53,622 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:18:53,623 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:18:53,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:18:53,685 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:18:53,697 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_change_pc8736x_gpio_set.i[5469,5482] [2023-08-30 17:18:53,847 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 17:18:53,901 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:18:53,902 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:18:53,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:18:54,609 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:18:54,609 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:18:54,610 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:18:54,610 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:18:54,610 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:18:54,610 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:18:54,610 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:18:54,616 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:18:54,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:54 WrapperNode [2023-08-30 17:18:54,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:18:54,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:18:54,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:18:54,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:18:54,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:54" (1/1) ... [2023-08-30 17:18:54,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:54" (1/1) ... [2023-08-30 17:18:54,774 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 58, statements flattened = 791 [2023-08-30 17:18:54,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:18:54,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:18:54,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:18:54,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:18:54,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:54" (1/1) ... [2023-08-30 17:18:54,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:54" (1/1) ... [2023-08-30 17:18:54,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:54" (1/1) ... [2023-08-30 17:18:54,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:54" (1/1) ... [2023-08-30 17:18:54,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:54" (1/1) ... [2023-08-30 17:18:54,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:54" (1/1) ... [2023-08-30 17:18:54,829 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:54" (1/1) ... [2023-08-30 17:18:54,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:54" (1/1) ... [2023-08-30 17:18:54,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:18:54,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:18:54,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:18:54,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:18:54,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:54" (1/1) ... [2023-08-30 17:18:54,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:18:54,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:18:54,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 17:18:54,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 17:18:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 17:18:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 17:18:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:18:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 17:18:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 17:18:54,941 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 17:18:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:18:54,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:18:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 17:18:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:18:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 17:18:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 17:18:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:18:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 17:18:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_set [2023-08-30 17:18:54,943 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_set [2023-08-30 17:18:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 17:18:54,945 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 17:18:55,432 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:18:55,434 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:18:56,243 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:18:56,257 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:18:56,258 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-08-30 17:18:56,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:18:56 BoogieIcfgContainer [2023-08-30 17:18:56,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:18:56,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:18:56,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:18:56,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:18:56,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:18:50" (1/3) ... [2023-08-30 17:18:56,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2c1f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:18:56, skipping insertion in model container [2023-08-30 17:18:56,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:54" (2/3) ... [2023-08-30 17:18:56,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2c1f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:18:56, skipping insertion in model container [2023-08-30 17:18:56,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:18:56" (3/3) ... [2023-08-30 17:18:56,269 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_set.i [2023-08-30 17:18:56,276 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:18:56,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:18:56,284 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 17:18:56,284 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:18:56,417 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 17:18:56,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 806 places, 864 transitions, 1744 flow [2023-08-30 17:18:56,710 INFO L130 PetriNetUnfolder]: 65/862 cut-off events. [2023-08-30 17:18:56,711 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 17:18:56,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 862 events. 65/862 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1552 event pairs, 0 based on Foata normal form. 0/793 useless extension candidates. Maximal degree in co-relation 705. Up to 9 conditions per place. [2023-08-30 17:18:56,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 806 places, 864 transitions, 1744 flow [2023-08-30 17:18:56,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 796 places, 854 transitions, 1717 flow [2023-08-30 17:18:56,756 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:18:56,763 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 796 places, 854 transitions, 1717 flow [2023-08-30 17:18:56,765 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 796 places, 854 transitions, 1717 flow [2023-08-30 17:18:56,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 796 places, 854 transitions, 1717 flow [2023-08-30 17:18:56,902 INFO L130 PetriNetUnfolder]: 65/854 cut-off events. [2023-08-30 17:18:56,903 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 17:18:56,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 854 events. 65/854 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1380 event pairs, 0 based on Foata normal form. 0/785 useless extension candidates. Maximal degree in co-relation 705. Up to 9 conditions per place. [2023-08-30 17:18:56,922 INFO L119 LiptonReduction]: Number of co-enabled transitions 35388 [2023-08-30 17:20:01,262 WARN L222 SmtUtils]: Spent 12.91s on a formula simplification that was a NOOP. DAG size: 372 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:20:11,533 WARN L222 SmtUtils]: Spent 10.26s on a formula simplification that was a NOOP. DAG size: 316 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:20:20,105 WARN L222 SmtUtils]: Spent 8.57s on a formula simplification that was a NOOP. DAG size: 372 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:20:26,989 WARN L222 SmtUtils]: Spent 6.88s on a formula simplification that was a NOOP. DAG size: 316 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:20:40,438 WARN L222 SmtUtils]: Spent 12.42s on a formula simplification that was a NOOP. DAG size: 518 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:20:51,575 WARN L222 SmtUtils]: Spent 11.14s on a formula simplification that was a NOOP. DAG size: 509 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:21:29,834 WARN L222 SmtUtils]: Spent 38.26s on a formula simplification that was a NOOP. DAG size: 518 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:21:56,502 WARN L222 SmtUtils]: Spent 26.67s on a formula simplification that was a NOOP. DAG size: 509 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:22:16,265 WARN L222 SmtUtils]: Spent 7.58s on a formula simplification. DAG size of input: 311 DAG size of output: 304 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:24:26,286 WARN L222 SmtUtils]: Spent 2.13m on a formula simplification. DAG size of input: 609 DAG size of output: 607 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:25:17,204 WARN L222 SmtUtils]: Spent 50.91s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:28:05,917 WARN L222 SmtUtils]: Spent 2.81m on a formula simplification. DAG size of input: 615 DAG size of output: 611 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:29:09,492 WARN L222 SmtUtils]: Spent 1.06m on a formula simplification that was a NOOP. DAG size: 584 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:29:09,495 INFO L134 LiptonReduction]: Checked pairs total: 30501 [2023-08-30 17:29:09,496 INFO L136 LiptonReduction]: Total number of compositions: 939 [2023-08-30 17:29:09,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:29:09,523 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;@5d70402a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:29:09,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 17:29:09,533 INFO L130 PetriNetUnfolder]: 6/11 cut-off events. [2023-08-30 17:29:09,534 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:29:09,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:29:09,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 17:29:09,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 17:29:09,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:29:09,541 INFO L85 PathProgramCache]: Analyzing trace with hash 3239691, now seen corresponding path program 1 times [2023-08-30 17:29:09,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:29:09,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418403437] [2023-08-30 17:29:09,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:29:09,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:29:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:29:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:29:10,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:29:10,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418403437] [2023-08-30 17:29:10,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418403437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:29:10,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:29:10,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 17:29:10,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821386170] [2023-08-30 17:29:10,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:29:10,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 17:29:10,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:29:10,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 17:29:10,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 17:29:10,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 820 out of 1803 [2023-08-30 17:29:10,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 64 transitions, 137 flow. Second operand has 2 states, 2 states have (on average 821.5) internal successors, (1643), 2 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:10,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:29:10,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 820 of 1803 [2023-08-30 17:29:10,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:29:10,413 INFO L130 PetriNetUnfolder]: 331/601 cut-off events. [2023-08-30 17:29:10,414 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-08-30 17:29:10,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 601 events. 331/601 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2178 event pairs, 321 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 1082. Up to 602 conditions per place. [2023-08-30 17:29:10,421 INFO L137 encePairwiseOnDemand]: 1786/1803 looper letters, 47 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2023-08-30 17:29:10,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 197 flow [2023-08-30 17:29:10,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 17:29:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 17:29:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1704 transitions. [2023-08-30 17:29:10,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47254575707154745 [2023-08-30 17:29:10,443 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1704 transitions. [2023-08-30 17:29:10,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1704 transitions. [2023-08-30 17:29:10,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:29:10,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1704 transitions. [2023-08-30 17:29:10,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 852.0) internal successors, (1704), 2 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:10,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1803.0) internal successors, (5409), 3 states have internal predecessors, (5409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:10,474 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1803.0) internal successors, (5409), 3 states have internal predecessors, (5409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:10,476 INFO L175 Difference]: Start difference. First operand has 45 places, 64 transitions, 137 flow. Second operand 2 states and 1704 transitions. [2023-08-30 17:29:10,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 197 flow [2023-08-30 17:29:10,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 17:29:10,482 INFO L231 Difference]: Finished difference. Result has 42 places, 47 transitions, 98 flow [2023-08-30 17:29:10,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2023-08-30 17:29:10,487 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2023-08-30 17:29:10,487 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 98 flow [2023-08-30 17:29:10,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 821.5) internal successors, (1643), 2 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:10,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:29:10,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:29:10,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:29:10,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 17:29:10,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:29:10,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1584559176, now seen corresponding path program 1 times [2023-08-30 17:29:10,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:29:10,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984091256] [2023-08-30 17:29:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:29:10,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:29:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:29:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:29:11,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:29:11,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984091256] [2023-08-30 17:29:11,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984091256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:29:11,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:29:11,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:29:11,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158946720] [2023-08-30 17:29:11,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:29:11,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:29:11,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:29:11,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:29:11,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:29:11,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 810 out of 1803 [2023-08-30 17:29:11,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 812.3333333333334) internal successors, (2437), 3 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:11,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:29:11,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 810 of 1803 [2023-08-30 17:29:11,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:29:11,840 INFO L130 PetriNetUnfolder]: 331/602 cut-off events. [2023-08-30 17:29:11,841 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 17:29:11,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 602 events. 331/602 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2175 event pairs, 321 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 1223. Up to 602 conditions per place. [2023-08-30 17:29:11,844 INFO L137 encePairwiseOnDemand]: 1799/1803 looper letters, 46 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-30 17:29:11,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 196 flow [2023-08-30 17:29:11,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:29:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:29:11,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2480 transitions. [2023-08-30 17:29:11,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45849510075799593 [2023-08-30 17:29:11,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2480 transitions. [2023-08-30 17:29:11,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2480 transitions. [2023-08-30 17:29:11,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:29:11,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2480 transitions. [2023-08-30 17:29:11,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 826.6666666666666) internal successors, (2480), 3 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:11,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1803.0) internal successors, (7212), 4 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:11,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1803.0) internal successors, (7212), 4 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:11,871 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 98 flow. Second operand 3 states and 2480 transitions. [2023-08-30 17:29:11,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 196 flow [2023-08-30 17:29:11,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 17:29:11,873 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 112 flow [2023-08-30 17:29:11,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2023-08-30 17:29:11,874 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2023-08-30 17:29:11,875 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 112 flow [2023-08-30 17:29:11,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 812.3333333333334) internal successors, (2437), 3 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:11,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:29:11,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:29:11,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 17:29:11,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 17:29:11,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:29:11,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1091993785, now seen corresponding path program 1 times [2023-08-30 17:29:11,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:29:11,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351802728] [2023-08-30 17:29:11,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:29:11,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:29:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:29:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:29:12,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:29:12,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351802728] [2023-08-30 17:29:12,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351802728] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:29:12,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967040628] [2023-08-30 17:29:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:29:12,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:29:12,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:29:12,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:29:12,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 17:29:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:29:13,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 17:29:13,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:29:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 17:29:13,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:29:13,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967040628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:29:13,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:29:13,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 17:29:13,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768903246] [2023-08-30 17:29:13,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:29:13,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:29:13,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:29:13,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:29:13,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 17:29:13,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 801 out of 1803 [2023-08-30 17:29:13,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 803.6666666666666) internal successors, (2411), 3 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:13,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:29:13,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 801 of 1803 [2023-08-30 17:29:13,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:29:13,963 INFO L130 PetriNetUnfolder]: 376/691 cut-off events. [2023-08-30 17:29:13,963 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 17:29:13,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 691 events. 376/691 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2822 event pairs, 135 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 1407. Up to 377 conditions per place. [2023-08-30 17:29:13,967 INFO L137 encePairwiseOnDemand]: 1799/1803 looper letters, 63 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-30 17:29:13,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 281 flow [2023-08-30 17:29:13,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:29:13,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:29:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2469 transitions. [2023-08-30 17:29:13,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564614531336661 [2023-08-30 17:29:13,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2469 transitions. [2023-08-30 17:29:13,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2469 transitions. [2023-08-30 17:29:13,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:29:13,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2469 transitions. [2023-08-30 17:29:13,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 823.0) internal successors, (2469), 3 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:13,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1803.0) internal successors, (7212), 4 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:13,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1803.0) internal successors, (7212), 4 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:13,997 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 112 flow. Second operand 3 states and 2469 transitions. [2023-08-30 17:29:13,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 281 flow [2023-08-30 17:29:13,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 277 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 17:29:14,000 INFO L231 Difference]: Finished difference. Result has 47 places, 50 transitions, 127 flow [2023-08-30 17:29:14,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=47, PETRI_TRANSITIONS=50} [2023-08-30 17:29:14,003 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-08-30 17:29:14,004 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 127 flow [2023-08-30 17:29:14,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 803.6666666666666) internal successors, (2411), 3 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:14,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:29:14,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:29:14,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 17:29:14,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:29:14,215 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 17:29:14,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:29:14,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1002200024, now seen corresponding path program 1 times [2023-08-30 17:29:14,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:29:14,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549540251] [2023-08-30 17:29:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:29:14,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:29:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:29:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:29:15,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:29:15,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549540251] [2023-08-30 17:29:15,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549540251] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:29:15,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234856648] [2023-08-30 17:29:15,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:29:15,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:29:15,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:29:15,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:29:15,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 17:29:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:29:16,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 17:29:16,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:29:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:29:16,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:29:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:29:16,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234856648] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:29:16,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:29:16,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 17:29:16,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040596174] [2023-08-30 17:29:16,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:29:16,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 17:29:16,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:29:16,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 17:29:16,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-30 17:29:16,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 806 out of 1803 [2023-08-30 17:29:16,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 50 transitions, 127 flow. Second operand has 8 states, 8 states have (on average 808.125) internal successors, (6465), 8 states have internal predecessors, (6465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:16,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:29:16,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 806 of 1803 [2023-08-30 17:29:16,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:29:17,185 INFO L130 PetriNetUnfolder]: 376/696 cut-off events. [2023-08-30 17:29:17,185 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-08-30 17:29:17,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 696 events. 376/696 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2754 event pairs, 358 based on Foata normal form. 0/626 useless extension candidates. Maximal degree in co-relation 1532. Up to 691 conditions per place. [2023-08-30 17:29:17,189 INFO L137 encePairwiseOnDemand]: 1795/1803 looper letters, 47 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2023-08-30 17:29:17,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 253 flow [2023-08-30 17:29:17,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:29:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:29:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4899 transitions. [2023-08-30 17:29:17,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528563505268996 [2023-08-30 17:29:17,202 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4899 transitions. [2023-08-30 17:29:17,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4899 transitions. [2023-08-30 17:29:17,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:29:17,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4899 transitions. [2023-08-30 17:29:17,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 816.5) internal successors, (4899), 6 states have internal predecessors, (4899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:17,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1803.0) internal successors, (12621), 7 states have internal predecessors, (12621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:17,268 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1803.0) internal successors, (12621), 7 states have internal predecessors, (12621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:17,269 INFO L175 Difference]: Start difference. First operand has 47 places, 50 transitions, 127 flow. Second operand 6 states and 4899 transitions. [2023-08-30 17:29:17,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 253 flow [2023-08-30 17:29:17,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 17:29:17,271 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 190 flow [2023-08-30 17:29:17,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2023-08-30 17:29:17,271 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2023-08-30 17:29:17,272 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 190 flow [2023-08-30 17:29:17,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 808.125) internal successors, (6465), 8 states have internal predecessors, (6465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:17,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:29:17,274 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:29:17,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 17:29:17,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 17:29:17,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 17:29:17,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:29:17,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1231745623, now seen corresponding path program 2 times [2023-08-30 17:29:17,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:29:17,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291010450] [2023-08-30 17:29:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:29:17,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:29:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:29:18,481 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:29:18,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:29:18,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291010450] [2023-08-30 17:29:18,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291010450] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:29:18,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259462028] [2023-08-30 17:29:18,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:29:18,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:29:18,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:29:18,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:29:18,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 17:29:20,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:29:20,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:29:20,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 17:29:20,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:29:20,658 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 17:29:20,659 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 57 treesize of output 53 [2023-08-30 17:29:20,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 17:29:20,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 17:29:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 17:29:20,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:29:20,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259462028] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:29:20,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:29:20,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-30 17:29:20,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058110590] [2023-08-30 17:29:20,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:29:20,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 17:29:20,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:29:20,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 17:29:20,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-30 17:29:21,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 799 out of 1803 [2023-08-30 17:29:21,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 801.75) internal successors, (3207), 4 states have internal predecessors, (3207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:21,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:29:21,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 799 of 1803 [2023-08-30 17:29:21,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:29:22,040 INFO L130 PetriNetUnfolder]: 412/783 cut-off events. [2023-08-30 17:29:22,040 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-08-30 17:29:22,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1718 conditions, 783 events. 412/783 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3327 event pairs, 229 based on Foata normal form. 0/727 useless extension candidates. Maximal degree in co-relation 1709. Up to 291 conditions per place. [2023-08-30 17:29:22,044 INFO L137 encePairwiseOnDemand]: 1798/1803 looper letters, 76 selfloop transitions, 6 changer transitions 2/84 dead transitions. [2023-08-30 17:29:22,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 429 flow [2023-08-30 17:29:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:29:22,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:29:22,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3273 transitions. [2023-08-30 17:29:22,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4538269550748752 [2023-08-30 17:29:22,052 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3273 transitions. [2023-08-30 17:29:22,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3273 transitions. [2023-08-30 17:29:22,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:29:22,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3273 transitions. [2023-08-30 17:29:22,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 818.25) internal successors, (3273), 4 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:22,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1803.0) internal successors, (9015), 5 states have internal predecessors, (9015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:22,069 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1803.0) internal successors, (9015), 5 states have internal predecessors, (9015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:22,070 INFO L175 Difference]: Start difference. First operand has 54 places, 55 transitions, 190 flow. Second operand 4 states and 3273 transitions. [2023-08-30 17:29:22,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 429 flow [2023-08-30 17:29:22,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 419 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 17:29:22,075 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 209 flow [2023-08-30 17:29:22,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2023-08-30 17:29:22,076 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2023-08-30 17:29:22,076 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 209 flow [2023-08-30 17:29:22,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 801.75) internal successors, (3207), 4 states have internal predecessors, (3207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:22,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:29:22,078 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:29:22,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 17:29:22,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:29:22,288 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 17:29:22,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:29:22,289 INFO L85 PathProgramCache]: Analyzing trace with hash -470590488, now seen corresponding path program 1 times [2023-08-30 17:29:22,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:29:22,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160995207] [2023-08-30 17:29:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:29:22,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:29:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:29:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:29:22,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:29:22,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160995207] [2023-08-30 17:29:22,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160995207] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:29:22,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407158837] [2023-08-30 17:29:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:29:22,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:29:22,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:29:22,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:29:23,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 17:29:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:29:24,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 17:29:24,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:29:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:29:25,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:29:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:29:25,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407158837] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:29:25,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:29:25,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-30 17:29:25,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798204399] [2023-08-30 17:29:25,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:29:25,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 17:29:25,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:29:25,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 17:29:25,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-08-30 17:29:25,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 808 out of 1803 [2023-08-30 17:29:25,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 209 flow. Second operand has 16 states, 16 states have (on average 809.625) internal successors, (12954), 16 states have internal predecessors, (12954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:25,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:29:25,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 808 of 1803 [2023-08-30 17:29:25,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:29:27,495 INFO L130 PetriNetUnfolder]: 412/792 cut-off events. [2023-08-30 17:29:27,495 INFO L131 PetriNetUnfolder]: For 247/247 co-relation queries the response was YES. [2023-08-30 17:29:27,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 792 events. 412/792 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3327 event pairs, 388 based on Foata normal form. 9/768 useless extension candidates. Maximal degree in co-relation 1862. Up to 778 conditions per place. [2023-08-30 17:29:27,499 INFO L137 encePairwiseOnDemand]: 1795/1803 looper letters, 49 selfloop transitions, 17 changer transitions 0/66 dead transitions. [2023-08-30 17:29:27,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 66 transitions, 389 flow [2023-08-30 17:29:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 17:29:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 17:29:27,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 9776 transitions. [2023-08-30 17:29:27,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518395267147347 [2023-08-30 17:29:27,520 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 9776 transitions. [2023-08-30 17:29:27,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 9776 transitions. [2023-08-30 17:29:27,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:29:27,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 9776 transitions. [2023-08-30 17:29:27,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 814.6666666666666) internal successors, (9776), 12 states have internal predecessors, (9776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:27,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1803.0) internal successors, (23439), 13 states have internal predecessors, (23439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:27,571 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1803.0) internal successors, (23439), 13 states have internal predecessors, (23439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:27,571 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 209 flow. Second operand 12 states and 9776 transitions. [2023-08-30 17:29:27,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 66 transitions, 389 flow [2023-08-30 17:29:27,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:29:27,577 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 346 flow [2023-08-30 17:29:27,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=346, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2023-08-30 17:29:27,580 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2023-08-30 17:29:27,580 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 346 flow [2023-08-30 17:29:27,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 809.625) internal successors, (12954), 16 states have internal predecessors, (12954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:27,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:29:27,583 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:29:27,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 17:29:27,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:29:27,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 17:29:27,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:29:27,795 INFO L85 PathProgramCache]: Analyzing trace with hash 710289800, now seen corresponding path program 2 times [2023-08-30 17:29:27,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:29:27,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283488267] [2023-08-30 17:29:27,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:29:27,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:29:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:29:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:29:29,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:29:29,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283488267] [2023-08-30 17:29:29,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283488267] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:29:29,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51971836] [2023-08-30 17:29:29,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:29:29,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:29:29,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:29:29,213 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:29:29,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 17:29:30,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:29:30,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:29:30,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 243 conjunts are in the unsatisfiable core [2023-08-30 17:29:30,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:29:30,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:30,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:36,928 WARN L222 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 1202 DAG size of output: 283 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-30 17:29:36,934 INFO L321 Elim1Store]: treesize reduction 9076, result has 6.5 percent of original size [2023-08-30 17:29:36,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 77 case distinctions, treesize of input 427 treesize of output 974 [2023-08-30 17:29:47,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:47,294 INFO L321 Elim1Store]: treesize reduction 198, result has 23.6 percent of original size [2023-08-30 17:29:47,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 403 treesize of output 436 [2023-08-30 17:29:47,417 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 17:29:47,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 347 treesize of output 346 [2023-08-30 17:29:47,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 335 treesize of output 335 [2023-08-30 17:29:47,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 329 treesize of output 329 [2023-08-30 17:29:47,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 323 treesize of output 323 [2023-08-30 17:29:48,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:29:48,037 INFO L321 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2023-08-30 17:29:48,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 100 treesize of output 116 [2023-08-30 17:29:48,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 17:29:48,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 17:29:48,479 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 17:29:48,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:29:48,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51971836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:29:48,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:29:48,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2023-08-30 17:29:48,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379704192] [2023-08-30 17:29:48,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:29:48,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:29:48,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:29:48,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:29:48,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-08-30 17:29:49,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 783 out of 1803 [2023-08-30 17:29:49,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 784.7142857142857) internal successors, (5493), 7 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:49,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:29:49,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 783 of 1803 [2023-08-30 17:29:49,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:29:50,282 INFO L130 PetriNetUnfolder]: 387/750 cut-off events. [2023-08-30 17:29:50,282 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2023-08-30 17:29:50,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 750 events. 387/750 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3146 event pairs, 223 based on Foata normal form. 17/734 useless extension candidates. Maximal degree in co-relation 1763. Up to 333 conditions per place. [2023-08-30 17:29:50,287 INFO L137 encePairwiseOnDemand]: 1791/1803 looper letters, 78 selfloop transitions, 14 changer transitions 2/94 dead transitions. [2023-08-30 17:29:50,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 94 transitions, 609 flow [2023-08-30 17:29:50,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:29:50,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:29:50,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4775 transitions. [2023-08-30 17:29:50,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413939730079497 [2023-08-30 17:29:50,301 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4775 transitions. [2023-08-30 17:29:50,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4775 transitions. [2023-08-30 17:29:50,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:29:50,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4775 transitions. [2023-08-30 17:29:50,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 795.8333333333334) internal successors, (4775), 6 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:50,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1803.0) internal successors, (12621), 7 states have internal predecessors, (12621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:50,324 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1803.0) internal successors, (12621), 7 states have internal predecessors, (12621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:50,325 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 346 flow. Second operand 6 states and 4775 transitions. [2023-08-30 17:29:50,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 94 transitions, 609 flow [2023-08-30 17:29:50,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 94 transitions, 569 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-08-30 17:29:50,330 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 349 flow [2023-08-30 17:29:50,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=349, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2023-08-30 17:29:50,331 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2023-08-30 17:29:50,331 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 349 flow [2023-08-30 17:29:50,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 784.7142857142857) internal successors, (5493), 7 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:50,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:29:50,333 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:29:50,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 17:29:50,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:29:50,544 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 17:29:50,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:29:50,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1903990909, now seen corresponding path program 1 times [2023-08-30 17:29:50,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:29:50,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236733415] [2023-08-30 17:29:50,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:29:50,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:29:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:29:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:29:51,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:29:51,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236733415] [2023-08-30 17:29:51,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236733415] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:29:51,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320989664] [2023-08-30 17:29:51,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:29:51,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:29:51,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:29:51,841 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:29:51,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 17:29:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:29:53,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 17:29:53,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:29:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:29:53,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:29:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:29:54,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320989664] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:29:54,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:29:54,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-08-30 17:29:54,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156880075] [2023-08-30 17:29:54,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:29:54,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 17:29:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:29:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 17:29:54,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=812, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 17:29:55,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 808 out of 1803 [2023-08-30 17:29:55,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 349 flow. Second operand has 34 states, 34 states have (on average 809.3529411764706) internal successors, (27518), 34 states have internal predecessors, (27518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:29:55,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:29:55,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 808 of 1803 [2023-08-30 17:29:55,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:30:10,906 WARN L222 SmtUtils]: Spent 7.49s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 17:30:22,861 INFO L130 PetriNetUnfolder]: 387/768 cut-off events. [2023-08-30 17:30:22,862 INFO L131 PetriNetUnfolder]: For 1472/1472 co-relation queries the response was YES. [2023-08-30 17:30:22,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1938 conditions, 768 events. 387/768 cut-off events. For 1472/1472 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3197 event pairs, 365 based on Foata normal form. 30/767 useless extension candidates. Maximal degree in co-relation 1919. Up to 736 conditions per place. [2023-08-30 17:30:22,868 INFO L137 encePairwiseOnDemand]: 1795/1803 looper letters, 50 selfloop transitions, 35 changer transitions 0/85 dead transitions. [2023-08-30 17:30:22,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 85 transitions, 615 flow [2023-08-30 17:30:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 17:30:22,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 17:30:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 19508 transitions. [2023-08-30 17:30:22,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4508227029025698 [2023-08-30 17:30:22,908 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 19508 transitions. [2023-08-30 17:30:22,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 19508 transitions. [2023-08-30 17:30:22,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:30:22,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 19508 transitions. [2023-08-30 17:30:22,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 812.8333333333334) internal successors, (19508), 24 states have internal predecessors, (19508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:30:22,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 1803.0) internal successors, (45075), 25 states have internal predecessors, (45075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:30:23,000 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 1803.0) internal successors, (45075), 25 states have internal predecessors, (45075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:30:23,000 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 349 flow. Second operand 24 states and 19508 transitions. [2023-08-30 17:30:23,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 85 transitions, 615 flow [2023-08-30 17:30:23,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 85 transitions, 592 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 17:30:23,007 INFO L231 Difference]: Finished difference. Result has 107 places, 85 transitions, 614 flow [2023-08-30 17:30:23,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=614, PETRI_PLACES=107, PETRI_TRANSITIONS=85} [2023-08-30 17:30:23,010 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 62 predicate places. [2023-08-30 17:30:23,010 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 85 transitions, 614 flow [2023-08-30 17:30:23,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 809.3529411764706) internal successors, (27518), 34 states have internal predecessors, (27518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:30:23,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:30:23,014 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:30:23,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 17:30:23,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:30:23,225 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 17:30:23,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:30:23,226 INFO L85 PathProgramCache]: Analyzing trace with hash -39699523, now seen corresponding path program 2 times [2023-08-30 17:30:23,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:30:23,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153464916] [2023-08-30 17:30:23,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:30:23,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:30:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:30:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:30:25,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:30:25,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153464916] [2023-08-30 17:30:25,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153464916] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:30:25,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189294140] [2023-08-30 17:30:25,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:30:25,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:30:25,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:30:25,741 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:30:25,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 17:30:30,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 17:30:30,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:30:30,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-30 17:30:30,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:30:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:30:31,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:30:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:30:33,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189294140] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:30:33,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:30:33,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2023-08-30 17:30:33,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344573573] [2023-08-30 17:30:33,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:30:33,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-08-30 17:30:33,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:30:33,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-08-30 17:30:33,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1221, Invalid=3749, Unknown=0, NotChecked=0, Total=4970 [2023-08-30 17:30:40,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 806 out of 1803 [2023-08-30 17:30:40,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 85 transitions, 614 flow. Second operand has 71 states, 71 states have (on average 807.169014084507) internal successors, (57309), 71 states have internal predecessors, (57309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:30:40,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:30:40,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 806 of 1803 [2023-08-30 17:30:40,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:30:51,614 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_external_alloc_~size#1| 4294967296))) (and (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 8) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 14) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 5) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 1) 4294967296) .cse0) (< (mod |c_ULTIMATE.start_external_alloc_~i~0#1| 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 3) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 6) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 2) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 21) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 15) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 16) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 18) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 13) 4294967296) .cse0) (< (mod (+ 19 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 22) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 12) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 17) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 20) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 9) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 10) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 4) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 11) 4294967296) .cse0) (< (mod (+ 7 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0))) is different from false Killed by 15