./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_current.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_current.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 51c838f928ac384d8fdc78da2570bfd8622730962319208ac7b8c7e3db94de0f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:40:36,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:40:36,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:40:36,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:40:36,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:40:36,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:40:36,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:40:36,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:40:36,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:40:36,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:40:36,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:40:36,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:40:36,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:40:36,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:40:36,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:40:36,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:40:36,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:40:36,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:40:36,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:40:36,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:40:36,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:40:36,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:40:36,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:40:36,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:40:36,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:40:36,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:40:36,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:40:36,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:40:36,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:40:36,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:40:36,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:40:36,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:40:36,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:40:36,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:40:36,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:40:36,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:40:36,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:40:36,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:40:36,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:40:36,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:40:36,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:40:36,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:40:36,650 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:40:36,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:40:36,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:40:36,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:40:36,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:40:36,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:40:36,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:40:36,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:40:36,655 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:40:36,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:40:36,656 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:40:36,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:40:36,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:40:36,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:40:36,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:40:36,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:40:36,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:40:36,657 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:40:36,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:40:36,657 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:40:36,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:40:36,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:40:36,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:40:36,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:40:36,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:40:36,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:40:36,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:40:36,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:40:36,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:40:36,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:40:36,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:40:36,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:40:36,660 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:40:36,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:40:36,660 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:40:36,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51c838f928ac384d8fdc78da2570bfd8622730962319208ac7b8c7e3db94de0f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:40:36,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:40:36,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:40:36,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:40:36,965 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:40:36,965 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:40:36,966 INFO L432 ainManager$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_current.i [2023-08-30 23:40:38,150 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:40:38,671 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:40:38,672 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_current.i [2023-08-30 23:40:38,707 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1c2df72a/58a125675df343b09857839f519e4604/FLAGaf22ac1a8 [2023-08-30 23:40:38,723 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1c2df72a/58a125675df343b09857839f519e4604 [2023-08-30 23:40:38,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:40:38,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:40:38,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:40:38,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:40:38,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:40:38,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:40:38" (1/1) ... [2023-08-30 23:40:38,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f78e016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:38, skipping insertion in model container [2023-08-30 23:40:38,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:40:38" (1/1) ... [2023-08-30 23:40:38,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:40:38,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:40:39,229 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_current.i[5469,5482] [2023-08-30 23:40:41,612 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 23:40:42,074 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:40:42,075 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:40:42,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:40:42,163 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:40:42,185 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_current.i[5469,5482] [2023-08-30 23:40:42,367 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 23:40:42,423 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:40:42,423 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:40:42,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:40:42,983 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:40:42,984 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:40:42,984 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:40:42,984 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:40:42,984 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:40:42,984 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:40:42,984 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:40:42,990 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:40:42,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:42 WrapperNode [2023-08-30 23:40:42,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:40:42,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:40:42,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:40:42,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:40:42,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:42" (1/1) ... [2023-08-30 23:40:43,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:42" (1/1) ... [2023-08-30 23:40:43,176 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 54, statements flattened = 722 [2023-08-30 23:40:43,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:40:43,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:40:43,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:40:43,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:40:43,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:42" (1/1) ... [2023-08-30 23:40:43,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:42" (1/1) ... [2023-08-30 23:40:43,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:42" (1/1) ... [2023-08-30 23:40:43,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:42" (1/1) ... [2023-08-30 23:40:43,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:42" (1/1) ... [2023-08-30 23:40:43,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:42" (1/1) ... [2023-08-30 23:40:43,262 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:42" (1/1) ... [2023-08-30 23:40:43,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:42" (1/1) ... [2023-08-30 23:40:43,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:40:43,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:40:43,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:40:43,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:40:43,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:42" (1/1) ... [2023-08-30 23:40:43,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:40:43,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:40:43,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 23:40:43,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 23:40:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 23:40:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 23:40:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:40:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 23:40:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 23:40:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 23:40:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_current [2023-08-30 23:40:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_current [2023-08-30 23:40:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:40:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:40:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 23:40:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:40:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 23:40:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:40:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:40:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 23:40:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:40:43,366 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:40:43,885 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:40:43,887 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:40:44,579 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:40:44,597 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:40:44,597 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-08-30 23:40:44,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:40:44 BoogieIcfgContainer [2023-08-30 23:40:44,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:40:44,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:40:44,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:40:44,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:40:44,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:40:38" (1/3) ... [2023-08-30 23:40:44,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d5650e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:40:44, skipping insertion in model container [2023-08-30 23:40:44,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:42" (2/3) ... [2023-08-30 23:40:44,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d5650e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:40:44, skipping insertion in model container [2023-08-30 23:40:44,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:40:44" (3/3) ... [2023-08-30 23:40:44,609 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_current.i [2023-08-30 23:40:44,616 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:40:44,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:40:44,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 23:40:44,624 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:40:44,797 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 23:40:44,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 741 places, 788 transitions, 1592 flow [2023-08-30 23:40:45,146 INFO L130 PetriNetUnfolder]: 54/786 cut-off events. [2023-08-30 23:40:45,147 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 23:40:45,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 786 events. 54/786 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1067 event pairs, 0 based on Foata normal form. 0/728 useless extension candidates. Maximal degree in co-relation 629. Up to 9 conditions per place. [2023-08-30 23:40:45,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 741 places, 788 transitions, 1592 flow [2023-08-30 23:40:45,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 731 places, 778 transitions, 1565 flow [2023-08-30 23:40:45,166 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:40:45,174 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 731 places, 778 transitions, 1565 flow [2023-08-30 23:40:45,176 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 731 places, 778 transitions, 1565 flow [2023-08-30 23:40:45,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 731 places, 778 transitions, 1565 flow [2023-08-30 23:40:45,337 INFO L130 PetriNetUnfolder]: 54/778 cut-off events. [2023-08-30 23:40:45,338 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 23:40:45,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 778 events. 54/778 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1007 event pairs, 0 based on Foata normal form. 0/720 useless extension candidates. Maximal degree in co-relation 629. Up to 9 conditions per place. [2023-08-30 23:40:45,347 INFO L119 LiptonReduction]: Number of co-enabled transitions 12132 [2023-08-30 23:42:14,326 WARN L222 SmtUtils]: Spent 27.84s on a formula simplification that was a NOOP. DAG size: 511 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:42:42,980 WARN L222 SmtUtils]: Spent 28.65s on a formula simplification that was a NOOP. DAG size: 511 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:43:05,905 WARN L222 SmtUtils]: Spent 22.92s on a formula simplification that was a NOOP. DAG size: 511 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:43:25,421 WARN L222 SmtUtils]: Spent 19.51s on a formula simplification that was a NOOP. DAG size: 511 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:44:49,969 WARN L222 SmtUtils]: Spent 1.34m on a formula simplification. DAG size of input: 601 DAG size of output: 599 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:45:34,325 WARN L222 SmtUtils]: Spent 44.35s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:47:54,188 WARN L222 SmtUtils]: Spent 2.33m on a formula simplification. DAG size of input: 604 DAG size of output: 602 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:48:29,682 WARN L222 SmtUtils]: Spent 35.48s on a formula simplification that was a NOOP. DAG size: 584 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:48:40,899 INFO L134 LiptonReduction]: Checked pairs total: 10811 [2023-08-30 23:48:40,899 INFO L136 LiptonReduction]: Total number of compositions: 873 [2023-08-30 23:48:40,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:48:40,918 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;@5ba10c15, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:48:40,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 23:48:40,927 INFO L130 PetriNetUnfolder]: 6/11 cut-off events. [2023-08-30 23:48:40,927 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:48:40,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:48:40,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 23:48:40,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:48:40,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:48:40,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2899248, now seen corresponding path program 1 times [2023-08-30 23:48:40,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:48:40,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909111252] [2023-08-30 23:48:40,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:48:40,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:48:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:48:41,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:48:41,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:48:41,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909111252] [2023-08-30 23:48:41,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909111252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:48:41,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:48:41,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:48:41,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006144184] [2023-08-30 23:48:41,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:48:41,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 23:48:41,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:48:41,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 23:48:41,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 23:48:41,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 750 out of 1661 [2023-08-30 23:48:41,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 49 transitions, 107 flow. Second operand has 2 states, 2 states have (on average 751.5) internal successors, (1503), 2 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:41,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:48:41,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 750 of 1661 [2023-08-30 23:48:41,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:48:41,766 INFO L130 PetriNetUnfolder]: 79/159 cut-off events. [2023-08-30 23:48:41,766 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 23:48:41,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 159 events. 79/159 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 450 event pairs, 69 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 236. Up to 160 conditions per place. [2023-08-30 23:48:41,769 INFO L137 encePairwiseOnDemand]: 1648/1661 looper letters, 36 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2023-08-30 23:48:41,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 153 flow [2023-08-30 23:48:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 23:48:41,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 23:48:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1549 transitions. [2023-08-30 23:48:41,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46628537025888017 [2023-08-30 23:48:41,794 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1549 transitions. [2023-08-30 23:48:41,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1549 transitions. [2023-08-30 23:48:41,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:48:41,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1549 transitions. [2023-08-30 23:48:41,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 774.5) internal successors, (1549), 2 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:41,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1661.0) internal successors, (4983), 3 states have internal predecessors, (4983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:41,823 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1661.0) internal successors, (4983), 3 states have internal predecessors, (4983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:41,824 INFO L175 Difference]: Start difference. First operand has 35 places, 49 transitions, 107 flow. Second operand 2 states and 1549 transitions. [2023-08-30 23:48:41,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 153 flow [2023-08-30 23:48:41,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 148 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 23:48:41,829 INFO L231 Difference]: Finished difference. Result has 31 places, 36 transitions, 76 flow [2023-08-30 23:48:41,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1661, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=31, PETRI_TRANSITIONS=36} [2023-08-30 23:48:41,834 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -4 predicate places. [2023-08-30 23:48:41,834 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 36 transitions, 76 flow [2023-08-30 23:48:41,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 751.5) internal successors, (1503), 2 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:41,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:48:41,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 23:48:41,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:48:41,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:48:41,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:48:41,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1507659460, now seen corresponding path program 1 times [2023-08-30 23:48:41,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:48:41,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319995661] [2023-08-30 23:48:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:48:41,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:48:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:48:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:48:42,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:48:42,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319995661] [2023-08-30 23:48:42,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319995661] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:48:42,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:48:42,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:48:42,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048787228] [2023-08-30 23:48:42,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:48:42,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:48:42,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:48:42,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:48:42,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:48:42,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 742 out of 1661 [2023-08-30 23:48:42,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 36 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 743.6666666666666) internal successors, (2231), 3 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:42,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:48:42,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 742 of 1661 [2023-08-30 23:48:42,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:48:42,982 INFO L130 PetriNetUnfolder]: 79/160 cut-off events. [2023-08-30 23:48:42,982 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 23:48:42,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 160 events. 79/160 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 450 event pairs, 69 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 329. Up to 160 conditions per place. [2023-08-30 23:48:42,984 INFO L137 encePairwiseOnDemand]: 1657/1661 looper letters, 35 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-30 23:48:42,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 152 flow [2023-08-30 23:48:42,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:48:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:48:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2265 transitions. [2023-08-30 23:48:42,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-08-30 23:48:42,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2265 transitions. [2023-08-30 23:48:42,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2265 transitions. [2023-08-30 23:48:42,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:48:42,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2265 transitions. [2023-08-30 23:48:42,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 755.0) internal successors, (2265), 3 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:43,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1661.0) internal successors, (6644), 4 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:43,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1661.0) internal successors, (6644), 4 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:43,008 INFO L175 Difference]: Start difference. First operand has 31 places, 36 transitions, 76 flow. Second operand 3 states and 2265 transitions. [2023-08-30 23:48:43,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 152 flow [2023-08-30 23:48:43,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 23:48:43,010 INFO L231 Difference]: Finished difference. Result has 34 places, 37 transitions, 90 flow [2023-08-30 23:48:43,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1661, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=37} [2023-08-30 23:48:43,011 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-08-30 23:48:43,011 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 37 transitions, 90 flow [2023-08-30 23:48:43,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 743.6666666666666) internal successors, (2231), 3 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:43,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:48:43,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 23:48:43,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:48:43,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:48:43,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:48:43,017 INFO L85 PathProgramCache]: Analyzing trace with hash 406583551, now seen corresponding path program 1 times [2023-08-30 23:48:43,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:48:43,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723579828] [2023-08-30 23:48:43,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:48:43,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:48:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:48:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:48:43,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:48:43,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723579828] [2023-08-30 23:48:43,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723579828] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:48:43,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764027600] [2023-08-30 23:48:43,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:48:43,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:48:43,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:48:43,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:48:43,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 23:48:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:48:44,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 23:48:44,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:48:44,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 23:48:44,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:48:44,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764027600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:48:44,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:48:44,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 23:48:44,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464267094] [2023-08-30 23:48:44,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:48:44,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:48:44,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:48:44,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:48:44,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:48:44,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 732 out of 1661 [2023-08-30 23:48:44,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 37 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 734.0) internal successors, (2202), 3 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:44,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:48:44,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 732 of 1661 [2023-08-30 23:48:44,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:48:45,174 INFO L130 PetriNetUnfolder]: 109/227 cut-off events. [2023-08-30 23:48:45,175 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 23:48:45,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 227 events. 109/227 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 836 event pairs, 34 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 473. Up to 156 conditions per place. [2023-08-30 23:48:45,176 INFO L137 encePairwiseOnDemand]: 1656/1661 looper letters, 44 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2023-08-30 23:48:45,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 211 flow [2023-08-30 23:48:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:48:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:48:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2244 transitions. [2023-08-30 23:48:45,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503311258278146 [2023-08-30 23:48:45,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2244 transitions. [2023-08-30 23:48:45,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2244 transitions. [2023-08-30 23:48:45,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:48:45,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2244 transitions. [2023-08-30 23:48:45,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 748.0) internal successors, (2244), 3 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:45,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1661.0) internal successors, (6644), 4 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:45,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1661.0) internal successors, (6644), 4 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:45,198 INFO L175 Difference]: Start difference. First operand has 34 places, 37 transitions, 90 flow. Second operand 3 states and 2244 transitions. [2023-08-30 23:48:45,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 211 flow [2023-08-30 23:48:45,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 207 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 23:48:45,200 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 112 flow [2023-08-30 23:48:45,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1661, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2023-08-30 23:48:45,201 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-30 23:48:45,201 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 112 flow [2023-08-30 23:48:45,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 734.0) internal successors, (2202), 3 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:48:45,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:48:45,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:48:45,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 23:48:45,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:48:45,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:48:45,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:48:45,416 INFO L85 PathProgramCache]: Analyzing trace with hash -280812396, now seen corresponding path program 1 times [2023-08-30 23:48:45,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:48:45,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378965125] [2023-08-30 23:48:45,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:48:45,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:48:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:48:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:48:45,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:48:45,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378965125] [2023-08-30 23:48:45,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378965125] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:48:45,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777882690] [2023-08-30 23:48:45,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:48:45,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:48:45,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:48:45,971 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:48:45,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 23:48:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:48:46,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 284 conjunts are in the unsatisfiable core [2023-08-30 23:48:46,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:48:47,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:48:47,527 INFO L217 Elim1Store]: Index analysis took 154 ms [2023-08-30 23:48:54,195 WARN L222 SmtUtils]: Spent 6.60s on a formula simplification. DAG size of input: 1211 DAG size of output: 275 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-30 23:48:54,199 INFO L321 Elim1Store]: treesize reduction 8656, result has 6.5 percent of original size [2023-08-30 23:48:54,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 18 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 70 case distinctions, treesize of input 710 treesize of output 1213 [2023-08-30 23:48:59,849 INFO L321 Elim1Store]: treesize reduction 83, result has 27.2 percent of original size [2023-08-30 23:48:59,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 393 treesize of output 400 [2023-08-30 23:48:59,982 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 23:48:59,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 347 treesize of output 346 [2023-08-30 23:49:00,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 335 treesize of output 335 [2023-08-30 23:49:00,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 329 treesize of output 329 [2023-08-30 23:49:00,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 323 treesize of output 323 [2023-08-30 23:49:00,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2023-08-30 23:49:00,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 23:49:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 23:49:00,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:49:00,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777882690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:49:00,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:49:00,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 23:49:00,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663435409] [2023-08-30 23:49:00,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:49:00,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:49:00,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:49:00,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:49:00,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:49:00,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 718 out of 1661 [2023-08-30 23:49:00,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 719.1666666666666) internal successors, (4315), 6 states have internal predecessors, (4315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:00,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:49:00,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 718 of 1661 [2023-08-30 23:49:00,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:49:01,373 INFO L130 PetriNetUnfolder]: 192/407 cut-off events. [2023-08-30 23:49:01,374 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2023-08-30 23:49:01,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 407 events. 192/407 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1810 event pairs, 115 based on Foata normal form. 9/376 useless extension candidates. Maximal degree in co-relation 981. Up to 217 conditions per place. [2023-08-30 23:49:01,376 INFO L137 encePairwiseOnDemand]: 1651/1661 looper letters, 55 selfloop transitions, 11 changer transitions 1/67 dead transitions. [2023-08-30 23:49:01,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 67 transitions, 331 flow [2023-08-30 23:49:01,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:49:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:49:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3652 transitions. [2023-08-30 23:49:01,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43973509933774835 [2023-08-30 23:49:01,385 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3652 transitions. [2023-08-30 23:49:01,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3652 transitions. [2023-08-30 23:49:01,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:49:01,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3652 transitions. [2023-08-30 23:49:01,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 730.4) internal successors, (3652), 5 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:01,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1661.0) internal successors, (9966), 6 states have internal predecessors, (9966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:01,407 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1661.0) internal successors, (9966), 6 states have internal predecessors, (9966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:01,407 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 112 flow. Second operand 5 states and 3652 transitions. [2023-08-30 23:49:01,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 67 transitions, 331 flow [2023-08-30 23:49:01,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 67 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:49:01,410 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 176 flow [2023-08-30 23:49:01,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1661, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2023-08-30 23:49:01,411 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-30 23:49:01,411 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 176 flow [2023-08-30 23:49:01,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 719.1666666666666) internal successors, (4315), 6 states have internal predecessors, (4315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:01,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:49:01,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:49:01,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 23:49:01,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 23:49:01,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:49:01,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:49:01,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1253748659, now seen corresponding path program 1 times [2023-08-30 23:49:01,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:49:01,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717558019] [2023-08-30 23:49:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:49:01,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:49:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:49:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 23:49:01,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:49:01,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717558019] [2023-08-30 23:49:01,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717558019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:49:01,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:49:01,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:49:01,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142544982] [2023-08-30 23:49:01,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:49:01,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:49:01,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:49:01,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:49:01,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:49:01,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 746 out of 1661 [2023-08-30 23:49:01,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 749.3333333333334) internal successors, (2248), 3 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:01,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:49:01,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 746 of 1661 [2023-08-30 23:49:01,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:49:02,286 INFO L130 PetriNetUnfolder]: 191/405 cut-off events. [2023-08-30 23:49:02,286 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-30 23:49:02,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 405 events. 191/405 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1701 event pairs, 155 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 1098. Up to 405 conditions per place. [2023-08-30 23:49:02,288 INFO L137 encePairwiseOnDemand]: 1659/1661 looper letters, 42 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 23:49:02,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 258 flow [2023-08-30 23:49:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:49:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:49:02,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2273 transitions. [2023-08-30 23:49:02,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45615091310455547 [2023-08-30 23:49:02,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2273 transitions. [2023-08-30 23:49:02,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2273 transitions. [2023-08-30 23:49:02,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:49:02,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2273 transitions. [2023-08-30 23:49:02,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 757.6666666666666) internal successors, (2273), 3 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:02,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1661.0) internal successors, (6644), 4 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:02,308 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1661.0) internal successors, (6644), 4 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:02,308 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 176 flow. Second operand 3 states and 2273 transitions. [2023-08-30 23:49:02,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 258 flow [2023-08-30 23:49:02,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:49:02,313 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 166 flow [2023-08-30 23:49:02,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1661, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2023-08-30 23:49:02,316 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-08-30 23:49:02,316 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 166 flow [2023-08-30 23:49:02,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 749.3333333333334) internal successors, (2248), 3 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:02,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:49:02,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:49:02,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:49:02,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:49:02,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:49:02,318 INFO L85 PathProgramCache]: Analyzing trace with hash 194489575, now seen corresponding path program 1 times [2023-08-30 23:49:02,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:49:02,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710261973] [2023-08-30 23:49:02,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:49:02,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:49:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:49:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:49:03,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:49:03,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710261973] [2023-08-30 23:49:03,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710261973] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:49:03,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649865293] [2023-08-30 23:49:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:49:03,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:49:03,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:49:03,073 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:49:03,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 23:49:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:49:04,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 23:49:04,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:49:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:49:04,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:49:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:49:04,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649865293] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:49:04,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:49:04,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 23:49:04,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200750066] [2023-08-30 23:49:04,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:49:04,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:49:04,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:49:04,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:49:04,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:49:04,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 736 out of 1661 [2023-08-30 23:49:04,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 166 flow. Second operand has 8 states, 8 states have (on average 738.0) internal successors, (5904), 8 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:04,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:49:04,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 736 of 1661 [2023-08-30 23:49:04,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:49:05,034 INFO L130 PetriNetUnfolder]: 191/410 cut-off events. [2023-08-30 23:49:05,035 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2023-08-30 23:49:05,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1118 conditions, 410 events. 191/410 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1614 event pairs, 155 based on Foata normal form. 3/375 useless extension candidates. Maximal degree in co-relation 1110. Up to 400 conditions per place. [2023-08-30 23:49:05,037 INFO L137 encePairwiseOnDemand]: 1654/1661 looper letters, 37 selfloop transitions, 11 changer transitions 0/48 dead transitions. [2023-08-30 23:49:05,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 278 flow [2023-08-30 23:49:05,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:49:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:49:05,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 5200 transitions. [2023-08-30 23:49:05,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.447234884320977 [2023-08-30 23:49:05,049 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 5200 transitions. [2023-08-30 23:49:05,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 5200 transitions. [2023-08-30 23:49:05,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:49:05,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 5200 transitions. [2023-08-30 23:49:05,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 742.8571428571429) internal successors, (5200), 7 states have internal predecessors, (5200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:05,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1661.0) internal successors, (13288), 8 states have internal predecessors, (13288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:05,076 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1661.0) internal successors, (13288), 8 states have internal predecessors, (13288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:05,077 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 166 flow. Second operand 7 states and 5200 transitions. [2023-08-30 23:49:05,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 278 flow [2023-08-30 23:49:05,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:49:05,080 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 207 flow [2023-08-30 23:49:05,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1661, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=207, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2023-08-30 23:49:05,083 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2023-08-30 23:49:05,083 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 207 flow [2023-08-30 23:49:05,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 738.0) internal successors, (5904), 8 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:05,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:49:05,085 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:49:05,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 23:49:05,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:49:05,298 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:49:05,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:49:05,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1968621724, now seen corresponding path program 2 times [2023-08-30 23:49:05,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:49:05,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806588431] [2023-08-30 23:49:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:49:05,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:49:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:49:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:49:06,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:49:06,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806588431] [2023-08-30 23:49:06,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806588431] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:49:06,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917258134] [2023-08-30 23:49:06,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 23:49:06,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:49:06,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:49:06,541 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:49:06,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 23:49:07,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 23:49:07,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 23:49:07,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 23:49:07,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:49:08,224 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 23:49:08,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:49:08,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917258134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:49:08,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:49:08,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-08-30 23:49:08,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318790869] [2023-08-30 23:49:08,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:49:08,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:49:08,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:49:08,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:49:08,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:49:08,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 746 out of 1661 [2023-08-30 23:49:08,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 749.3333333333334) internal successors, (2248), 3 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:08,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:49:08,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 746 of 1661 [2023-08-30 23:49:08,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:49:09,227 INFO L130 PetriNetUnfolder]: 157/344 cut-off events. [2023-08-30 23:49:09,228 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2023-08-30 23:49:09,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 344 events. 157/344 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1293 event pairs, 49 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 901. Up to 192 conditions per place. [2023-08-30 23:49:09,229 INFO L137 encePairwiseOnDemand]: 1657/1661 looper letters, 42 selfloop transitions, 3 changer transitions 6/51 dead transitions. [2023-08-30 23:49:09,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 310 flow [2023-08-30 23:49:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:49:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:49:09,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2278 transitions. [2023-08-30 23:49:09,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571543247039936 [2023-08-30 23:49:09,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2278 transitions. [2023-08-30 23:49:09,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2278 transitions. [2023-08-30 23:49:09,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:49:09,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2278 transitions. [2023-08-30 23:49:09,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 759.3333333333334) internal successors, (2278), 3 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:09,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1661.0) internal successors, (6644), 4 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:09,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1661.0) internal successors, (6644), 4 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:09,246 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 207 flow. Second operand 3 states and 2278 transitions. [2023-08-30 23:49:09,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 310 flow [2023-08-30 23:49:09,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 288 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-30 23:49:09,250 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 156 flow [2023-08-30 23:49:09,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1661, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-08-30 23:49:09,252 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-08-30 23:49:09,252 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 156 flow [2023-08-30 23:49:09,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 749.3333333333334) internal successors, (2248), 3 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:09,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:49:09,253 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:49:09,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 23:49:09,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:49:09,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:49:09,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:49:09,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1705656848, now seen corresponding path program 1 times [2023-08-30 23:49:09,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:49:09,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300623959] [2023-08-30 23:49:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:49:09,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:49:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:49:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:49:10,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:49:10,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300623959] [2023-08-30 23:49:10,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300623959] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:49:10,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533236729] [2023-08-30 23:49:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:49:10,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:49:10,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:49:10,821 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:49:10,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 23:49:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:49:11,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 23:49:11,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:49:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:49:12,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:49:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:49:12,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533236729] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:49:12,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:49:12,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 23:49:12,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176327385] [2023-08-30 23:49:12,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:49:12,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 23:49:12,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:49:12,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 23:49:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-08-30 23:49:12,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 736 out of 1661 [2023-08-30 23:49:12,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 156 flow. Second operand has 17 states, 17 states have (on average 737.5882352941177) internal successors, (12539), 17 states have internal predecessors, (12539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:12,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:49:12,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 736 of 1661 [2023-08-30 23:49:12,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:49:15,465 INFO L130 PetriNetUnfolder]: 67/177 cut-off events. [2023-08-30 23:49:15,465 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2023-08-30 23:49:15,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 177 events. 67/177 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 463 event pairs, 53 based on Foata normal form. 6/175 useless extension candidates. Maximal degree in co-relation 556. Up to 163 conditions per place. [2023-08-30 23:49:15,467 INFO L137 encePairwiseOnDemand]: 1654/1661 looper letters, 33 selfloop transitions, 17 changer transitions 0/50 dead transitions. [2023-08-30 23:49:15,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 292 flow [2023-08-30 23:49:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 23:49:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 23:49:15,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 8892 transitions. [2023-08-30 23:49:15,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461167971101746 [2023-08-30 23:49:15,487 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 8892 transitions. [2023-08-30 23:49:15,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 8892 transitions. [2023-08-30 23:49:15,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:49:15,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 8892 transitions. [2023-08-30 23:49:15,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 741.0) internal successors, (8892), 12 states have internal predecessors, (8892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:15,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1661.0) internal successors, (21593), 13 states have internal predecessors, (21593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:15,528 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1661.0) internal successors, (21593), 13 states have internal predecessors, (21593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:15,529 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 156 flow. Second operand 12 states and 8892 transitions. [2023-08-30 23:49:15,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 292 flow [2023-08-30 23:49:15,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:49:15,532 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 276 flow [2023-08-30 23:49:15,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1661, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=276, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-08-30 23:49:15,533 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2023-08-30 23:49:15,534 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 276 flow [2023-08-30 23:49:15,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 737.5882352941177) internal successors, (12539), 17 states have internal predecessors, (12539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:15,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:49:15,536 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:49:15,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 23:49:15,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:49:15,748 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:49:15,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:49:15,749 INFO L85 PathProgramCache]: Analyzing trace with hash 580811568, now seen corresponding path program 2 times [2023-08-30 23:49:15,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:49:15,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912205827] [2023-08-30 23:49:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:49:15,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:49:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:49:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:49:17,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:49:17,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912205827] [2023-08-30 23:49:17,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912205827] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:49:17,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113990214] [2023-08-30 23:49:17,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 23:49:17,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:49:17,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:49:17,295 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:49:17,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 23:49:19,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 23:49:19,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 23:49:19,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 23:49:19,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:49:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:49:19,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:49:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:49:20,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113990214] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:49:20,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:49:20,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-08-30 23:49:20,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318547249] [2023-08-30 23:49:20,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:49:20,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 23:49:20,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:49:20,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 23:49:20,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=871, Unknown=0, NotChecked=0, Total=1190 [2023-08-30 23:49:22,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 736 out of 1661 [2023-08-30 23:49:22,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 276 flow. Second operand has 35 states, 35 states have (on average 737.2857142857143) internal successors, (25805), 35 states have internal predecessors, (25805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:22,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:49:22,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 736 of 1661 [2023-08-30 23:49:22,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:49:39,267 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_external_alloc_~size#1| 4294967296))) (and (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 8) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 5) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 1) 4294967296) .cse0) (< (mod |c_ULTIMATE.start_external_alloc_~i~0#1| 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 3) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 6) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 2) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 9) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 4) 4294967296) .cse0) (< (mod (+ 7 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0))) is different from false [2023-08-30 23:49:49,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 23:49:51,823 INFO L130 PetriNetUnfolder]: 68/190 cut-off events. [2023-08-30 23:49:51,823 INFO L131 PetriNetUnfolder]: For 587/587 co-relation queries the response was YES. [2023-08-30 23:49:51,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 190 events. 68/190 cut-off events. For 587/587 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 522 event pairs, 53 based on Foata normal form. 23/208 useless extension candidates. Maximal degree in co-relation 615. Up to 167 conditions per place. [2023-08-30 23:49:51,825 INFO L137 encePairwiseOnDemand]: 1655/1661 looper letters, 36 selfloop transitions, 27 changer transitions 0/63 dead transitions. [2023-08-30 23:49:51,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 63 transitions, 489 flow [2023-08-30 23:49:51,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 23:49:51,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 23:49:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 17742 transitions. [2023-08-30 23:49:51,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4450632149307646 [2023-08-30 23:49:51,852 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 17742 transitions. [2023-08-30 23:49:51,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 17742 transitions. [2023-08-30 23:49:51,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:49:51,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 17742 transitions. [2023-08-30 23:49:51,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 739.25) internal successors, (17742), 24 states have internal predecessors, (17742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:51,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 1661.0) internal successors, (41525), 25 states have internal predecessors, (41525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:51,913 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 1661.0) internal successors, (41525), 25 states have internal predecessors, (41525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:51,913 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 276 flow. Second operand 24 states and 17742 transitions. [2023-08-30 23:49:51,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 63 transitions, 489 flow [2023-08-30 23:49:51,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 63 transitions, 465 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 23:49:51,917 INFO L231 Difference]: Finished difference. Result has 88 places, 63 transitions, 472 flow [2023-08-30 23:49:51,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1661, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=472, PETRI_PLACES=88, PETRI_TRANSITIONS=63} [2023-08-30 23:49:51,918 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 53 predicate places. [2023-08-30 23:49:51,918 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 63 transitions, 472 flow [2023-08-30 23:49:51,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 737.2857142857143) internal successors, (25805), 35 states have internal predecessors, (25805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:49:51,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:49:51,922 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:49:51,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 23:49:52,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:49:52,133 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:49:52,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:49:52,133 INFO L85 PathProgramCache]: Analyzing trace with hash -38732603, now seen corresponding path program 1 times [2023-08-30 23:49:52,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:49:52,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381003645] [2023-08-30 23:49:52,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:49:52,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:49:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:49:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:49:53,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:49:53,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381003645] [2023-08-30 23:49:53,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381003645] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:49:53,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869906502] [2023-08-30 23:49:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:49:53,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:49:53,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:49:53,604 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:49:53,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 23:49:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:49:57,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 23:49:57,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:49:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:49:58,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:49:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:49:58,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869906502] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:49:58,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:49:58,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2023-08-30 23:49:58,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657622106] [2023-08-30 23:49:58,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:49:58,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-30 23:49:58,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:49:58,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-30 23:49:58,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2023-08-30 23:50:00,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 738 out of 1661 [2023-08-30 23:50:00,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 63 transitions, 472 flow. Second operand has 40 states, 40 states have (on average 739.3) internal successors, (29572), 40 states have internal predecessors, (29572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:50:00,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:50:00,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 738 of 1661 [2023-08-30 23:50:00,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:50:18,304 WARN L222 SmtUtils]: Spent 10.54s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 23:50:52,317 INFO L130 PetriNetUnfolder]: 67/201 cut-off events. [2023-08-30 23:50:52,317 INFO L131 PetriNetUnfolder]: For 1762/1762 co-relation queries the response was YES. [2023-08-30 23:50:52,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 201 events. 67/201 cut-off events. For 1762/1762 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 450 event pairs, 53 based on Foata normal form. 17/213 useless extension candidates. Maximal degree in co-relation 712. Up to 163 conditions per place. [2023-08-30 23:50:52,319 INFO L137 encePairwiseOnDemand]: 1654/1661 looper letters, 33 selfloop transitions, 41 changer transitions 0/74 dead transitions. [2023-08-30 23:50:52,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 74 transitions, 682 flow [2023-08-30 23:50:52,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-30 23:50:52,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-30 23:50:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 20750 transitions. [2023-08-30 23:50:52,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461598004644362 [2023-08-30 23:50:52,347 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 20750 transitions. [2023-08-30 23:50:52,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 20750 transitions. [2023-08-30 23:50:52,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:50:52,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 20750 transitions. [2023-08-30 23:50:52,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 741.0714285714286) internal successors, (20750), 28 states have internal predecessors, (20750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:50:52,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 1661.0) internal successors, (48169), 29 states have internal predecessors, (48169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:50:52,414 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 1661.0) internal successors, (48169), 29 states have internal predecessors, (48169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:50:52,414 INFO L175 Difference]: Start difference. First operand has 88 places, 63 transitions, 472 flow. Second operand 28 states and 20750 transitions. [2023-08-30 23:50:52,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 74 transitions, 682 flow [2023-08-30 23:50:52,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 74 transitions, 598 flow, removed 37 selfloop flow, removed 5 redundant places. [2023-08-30 23:50:52,421 INFO L231 Difference]: Finished difference. Result has 118 places, 74 transitions, 600 flow [2023-08-30 23:50:52,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1661, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=600, PETRI_PLACES=118, PETRI_TRANSITIONS=74} [2023-08-30 23:50:52,422 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 83 predicate places. [2023-08-30 23:50:52,422 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 74 transitions, 600 flow [2023-08-30 23:50:52,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 739.3) internal successors, (29572), 40 states have internal predecessors, (29572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:50:52,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:50:52,426 INFO L208 CegarLoopForPetriNet]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:50:52,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 23:50:52,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:50:52,647 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_currentErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:50:52,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:50:52,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1087398352, now seen corresponding path program 3 times [2023-08-30 23:50:52,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:50:52,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091307560] [2023-08-30 23:50:52,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:50:52,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:50:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:50:55,081 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:50:55,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:50:55,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091307560] [2023-08-30 23:50:55,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091307560] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:50:55,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741612854] [2023-08-30 23:50:55,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 23:50:55,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:50:55,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:50:55,089 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:50:55,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Killed by 15