./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_set.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_set.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ed9526537bcdfa3a373273dd87f938e4c25e1fe3854b24ed96c7c81db808c7a7 --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 [2023-08-31 00:00:34,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 00:00:34,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 00:00:34,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 00:00:34,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 00:00:34,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 00:00:34,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 00:00:34,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 00:00:34,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 00:00:34,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 00:00:34,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 00:00:34,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 00:00:34,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 00:00:34,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 00:00:34,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 00:00:34,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 00:00:34,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 00:00:34,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 00:00:34,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 00:00:34,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 00:00:34,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 00:00:34,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 00:00:34,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 00:00:34,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 00:00:34,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 00:00:34,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 00:00:34,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 00:00:34,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 00:00:34,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 00:00:34,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 00:00:34,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 00:00:34,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 00:00:34,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 00:00:34,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 00:00:34,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 00:00:34,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 00:00:34,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 00:00:34,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 00:00:34,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 00:00:34,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 00:00:34,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 00:00:34,284 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 00:00:34,309 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 00:00:34,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 00:00:34,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 00:00:34,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 00:00:34,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 00:00:34,311 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 00:00:34,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 00:00:34,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 00:00:34,312 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 00:00:34,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 00:00:34,313 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 00:00:34,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 00:00:34,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 00:00:34,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 00:00:34,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 00:00:34,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 00:00:34,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 00:00:34,314 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 00:00:34,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 00:00:34,314 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 00:00:34,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 00:00:34,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 00:00:34,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 00:00:34,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 00:00:34,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 00:00:34,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 00:00:34,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 00:00:34,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 00:00:34,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 00:00:34,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 00:00:34,316 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 00:00:34,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 00:00:34,316 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 00:00:34,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 00:00:34,316 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 00:00:34,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed9526537bcdfa3a373273dd87f938e4c25e1fe3854b24ed96c7c81db808c7a7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 00:00:34,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 00:00:34,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 00:00:34,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 00:00:34,556 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 00:00:34,556 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 00:00:34,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_set.i [2023-08-31 00:00:35,444 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 00:00:35,779 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 00:00:35,780 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_set.i [2023-08-31 00:00:35,805 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1180a7ec/b5fc8def75d94b20994e72b879bcba52/FLAG9327d2e3c [2023-08-31 00:00:35,814 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1180a7ec/b5fc8def75d94b20994e72b879bcba52 [2023-08-31 00:00:35,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 00:00:35,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 00:00:35,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 00:00:35,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 00:00:35,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 00:00:35,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:00:35" (1/1) ... [2023-08-31 00:00:35,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@719ef4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:00:35, skipping insertion in model container [2023-08-31 00:00:35,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:00:35" (1/1) ... [2023-08-31 00:00:35,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 00:00:35,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 00:00:36,084 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_open_pc8736x_gpio_set.i[5469,5482] [2023-08-31 00:00:37,901 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-31 00:00:38,264 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-31 00:00:38,264 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-31 00:00:38,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 00:00:38,316 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 00:00:38,326 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_open_pc8736x_gpio_set.i[5469,5482] [2023-08-31 00:00:38,446 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-31 00:00:38,487 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-31 00:00:38,488 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-31 00:00:38,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 00:00:38,903 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 00:00:38,904 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 00:00:38,904 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 00:00:38,904 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 00:00:38,904 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 00:00:38,904 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 00:00:38,904 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 00:00:38,909 INFO L208 MainTranslator]: Completed translation [2023-08-31 00:00:38,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:00:38 WrapperNode [2023-08-31 00:00:38,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 00:00:38,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 00:00:38,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 00:00:38,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 00:00:38,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:00:38" (1/1) ... [2023-08-31 00:00:38,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:00:38" (1/1) ... [2023-08-31 00:00:39,037 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 53, statements flattened = 708 [2023-08-31 00:00:39,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 00:00:39,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 00:00:39,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 00:00:39,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 00:00:39,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:00:38" (1/1) ... [2023-08-31 00:00:39,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:00:38" (1/1) ... [2023-08-31 00:00:39,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:00:38" (1/1) ... [2023-08-31 00:00:39,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:00:38" (1/1) ... [2023-08-31 00:00:39,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:00:38" (1/1) ... [2023-08-31 00:00:39,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:00:38" (1/1) ... [2023-08-31 00:00:39,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:00:38" (1/1) ... [2023-08-31 00:00:39,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:00:38" (1/1) ... [2023-08-31 00:00:39,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 00:00:39,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 00:00:39,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 00:00:39,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 00:00:39,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:00:38" (1/1) ... [2023-08-31 00:00:39,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 00:00:39,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:00:39,124 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) [2023-08-31 00:00:39,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 00:00:39,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 00:00:39,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 00:00:39,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 00:00:39,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 00:00:39,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 00:00:39,149 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_open [2023-08-31 00:00:39,149 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_open [2023-08-31 00:00:39,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-31 00:00:39,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 00:00:39,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-31 00:00:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 00:00:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 00:00:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-31 00:00:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_set [2023-08-31 00:00:39,150 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_set [2023-08-31 00:00:39,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 00:00:39,152 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 00:00:39,141 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 [2023-08-31 00:00:39,619 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 00:00:39,620 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 00:00:40,285 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 00:00:40,296 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 00:00:40,296 INFO L302 CfgBuilder]: Removed 27 assume(true) statements. [2023-08-31 00:00:40,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:00:40 BoogieIcfgContainer [2023-08-31 00:00:40,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 00:00:40,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 00:00:40,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 00:00:40,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 00:00:40,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 12:00:35" (1/3) ... [2023-08-31 00:00:40,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e54462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 12:00:40, skipping insertion in model container [2023-08-31 00:00:40,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:00:38" (2/3) ... [2023-08-31 00:00:40,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e54462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 12:00:40, skipping insertion in model container [2023-08-31 00:00:40,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:00:40" (3/3) ... [2023-08-31 00:00:40,305 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_set.i [2023-08-31 00:00:40,310 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 00:00:40,316 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 00:00:40,316 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-31 00:00:40,316 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 00:00:40,416 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 00:00:40,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 724 places, 771 transitions, 1558 flow [2023-08-31 00:00:40,603 INFO L130 PetriNetUnfolder]: 54/769 cut-off events. [2023-08-31 00:00:40,603 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 00:00:40,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 769 events. 54/769 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1093 event pairs, 0 based on Foata normal form. 0/712 useless extension candidates. Maximal degree in co-relation 705. Up to 9 conditions per place. [2023-08-31 00:00:40,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 724 places, 771 transitions, 1558 flow [2023-08-31 00:00:40,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 714 places, 761 transitions, 1531 flow [2023-08-31 00:00:40,619 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 00:00:40,624 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 714 places, 761 transitions, 1531 flow [2023-08-31 00:00:40,626 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 714 places, 761 transitions, 1531 flow [2023-08-31 00:00:40,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 714 places, 761 transitions, 1531 flow [2023-08-31 00:00:40,735 INFO L130 PetriNetUnfolder]: 54/761 cut-off events. [2023-08-31 00:00:40,735 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 00:00:40,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 761 events. 54/761 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1043 event pairs, 0 based on Foata normal form. 0/704 useless extension candidates. Maximal degree in co-relation 705. Up to 9 conditions per place. [2023-08-31 00:00:40,745 INFO L119 LiptonReduction]: Number of co-enabled transitions 13812 [2023-08-31 00:01:34,998 WARN L222 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 336 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 00:01:45,289 WARN L222 SmtUtils]: Spent 6.21s on a formula simplification that was a NOOP. DAG size: 336 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 00:02:34,876 WARN L222 SmtUtils]: Spent 42.76s on a formula simplification that was a NOOP. DAG size: 534 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 00:03:16,928 WARN L222 SmtUtils]: Spent 42.05s on a formula simplification that was a NOOP. DAG size: 534 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 00:03:57,311 WARN L222 SmtUtils]: Spent 40.38s on a formula simplification that was a NOOP. DAG size: 534 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 00:04:37,457 WARN L222 SmtUtils]: Spent 40.14s on a formula simplification that was a NOOP. DAG size: 534 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 00:06:23,224 WARN L222 SmtUtils]: Spent 1.54m on a formula simplification. DAG size of input: 590 DAG size of output: 585 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 00:07:12,624 WARN L222 SmtUtils]: Spent 49.39s 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) [2023-08-31 00:09:12,713 WARN L222 SmtUtils]: Spent 2.00m on a formula simplification. DAG size of input: 596 DAG size of output: 589 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 00:09:42,205 WARN L222 SmtUtils]: Spent 29.49s 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) [2023-08-31 00:09:51,154 INFO L134 LiptonReduction]: Checked pairs total: 13470 [2023-08-31 00:09:51,154 INFO L136 LiptonReduction]: Total number of compositions: 845 [2023-08-31 00:09:51,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 00:09:51,167 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;@523ce5d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 00:09:51,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-31 00:09:51,174 INFO L130 PetriNetUnfolder]: 6/11 cut-off events. [2023-08-31 00:09:51,174 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 00:09:51,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:09:51,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 00:09:51,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 00:09:51,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:09:51,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2815618, now seen corresponding path program 1 times [2023-08-31 00:09:51,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:09:51,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235280165] [2023-08-31 00:09:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:09:51,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:09:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:09:51,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:09:51,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:09:51,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235280165] [2023-08-31 00:09:51,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235280165] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:09:51,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:09:51,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 00:09:51,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223423925] [2023-08-31 00:09:51,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:09:51,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 00:09:51,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:09:51,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 00:09:51,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 00:09:51,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 733 out of 1616 [2023-08-31 00:09:51,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 56 transitions, 121 flow. Second operand has 2 states, 2 states have (on average 734.5) internal successors, (1469), 2 states have internal predecessors, (1469), 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) [2023-08-31 00:09:51,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:09:51,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 733 of 1616 [2023-08-31 00:09:51,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:09:51,802 INFO L130 PetriNetUnfolder]: 169/319 cut-off events. [2023-08-31 00:09:51,803 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-31 00:09:51,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 319 events. 169/319 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1048 event pairs, 159 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 566. Up to 320 conditions per place. [2023-08-31 00:09:51,808 INFO L137 encePairwiseOnDemand]: 1601/1616 looper letters, 41 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-08-31 00:09:51,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 173 flow [2023-08-31 00:09:51,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 00:09:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 00:09:51,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1522 transitions. [2023-08-31 00:09:51,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4709158415841584 [2023-08-31 00:09:51,827 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1522 transitions. [2023-08-31 00:09:51,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1522 transitions. [2023-08-31 00:09:51,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:09:51,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1522 transitions. [2023-08-31 00:09:51,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 761.0) internal successors, (1522), 2 states have internal predecessors, (1522), 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) [2023-08-31 00:09:51,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1616.0) internal successors, (4848), 3 states have internal predecessors, (4848), 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) [2023-08-31 00:09:51,851 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1616.0) internal successors, (4848), 3 states have internal predecessors, (4848), 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) [2023-08-31 00:09:51,853 INFO L175 Difference]: Start difference. First operand has 39 places, 56 transitions, 121 flow. Second operand 2 states and 1522 transitions. [2023-08-31 00:09:51,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 173 flow [2023-08-31 00:09:51,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 00:09:51,857 INFO L231 Difference]: Finished difference. Result has 36 places, 41 transitions, 86 flow [2023-08-31 00:09:51,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1616, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=36, PETRI_TRANSITIONS=41} [2023-08-31 00:09:51,861 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-08-31 00:09:51,861 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 41 transitions, 86 flow [2023-08-31 00:09:51,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 734.5) internal successors, (1469), 2 states have internal predecessors, (1469), 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) [2023-08-31 00:09:51,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:09:51,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:09:51,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 00:09:51,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 00:09:51,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:09:51,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1633786917, now seen corresponding path program 1 times [2023-08-31 00:09:51,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:09:51,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198434126] [2023-08-31 00:09:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:09:51,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:09:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:09:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:09:52,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:09:52,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198434126] [2023-08-31 00:09:52,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198434126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:09:52,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:09:52,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 00:09:52,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497219122] [2023-08-31 00:09:52,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:09:52,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 00:09:52,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:09:52,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 00:09:52,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 00:09:52,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 715 out of 1616 [2023-08-31 00:09:52,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 41 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 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) [2023-08-31 00:09:52,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:09:52,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 715 of 1616 [2023-08-31 00:09:52,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:09:52,952 INFO L130 PetriNetUnfolder]: 170/332 cut-off events. [2023-08-31 00:09:52,952 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 00:09:52,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 332 events. 170/332 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1191 event pairs, 69 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 683. Up to 190 conditions per place. [2023-08-31 00:09:52,954 INFO L137 encePairwiseOnDemand]: 1612/1616 looper letters, 48 selfloop transitions, 3 changer transitions 3/54 dead transitions. [2023-08-31 00:09:52,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 221 flow [2023-08-31 00:09:52,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 00:09:52,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 00:09:52,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2200 transitions. [2023-08-31 00:09:52,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537953795379538 [2023-08-31 00:09:52,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2200 transitions. [2023-08-31 00:09:52,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2200 transitions. [2023-08-31 00:09:52,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:09:52,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2200 transitions. [2023-08-31 00:09:52,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 733.3333333333334) internal successors, (2200), 3 states have internal predecessors, (2200), 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) [2023-08-31 00:09:52,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1616.0) internal successors, (6464), 4 states have internal predecessors, (6464), 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) [2023-08-31 00:09:52,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1616.0) internal successors, (6464), 4 states have internal predecessors, (6464), 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) [2023-08-31 00:09:52,971 INFO L175 Difference]: Start difference. First operand has 36 places, 41 transitions, 86 flow. Second operand 3 states and 2200 transitions. [2023-08-31 00:09:52,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 221 flow [2023-08-31 00:09:52,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 221 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 00:09:52,972 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 108 flow [2023-08-31 00:09:52,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1616, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2023-08-31 00:09:52,973 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-08-31 00:09:52,973 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 108 flow [2023-08-31 00:09:52,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 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) [2023-08-31 00:09:52,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:09:52,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:09:52,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 00:09:52,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 00:09:52,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:09:52,975 INFO L85 PathProgramCache]: Analyzing trace with hash 375739505, now seen corresponding path program 1 times [2023-08-31 00:09:52,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:09:52,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165859589] [2023-08-31 00:09:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:09:52,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:09:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:09:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:09:53,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:09:53,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165859589] [2023-08-31 00:09:53,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165859589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:09:53,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:09:53,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 00:09:53,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861151413] [2023-08-31 00:09:53,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:09:53,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 00:09:53,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:09:53,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 00:09:53,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 00:09:53,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 725 out of 1616 [2023-08-31 00:09:53,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 728.3333333333334) internal successors, (2185), 3 states have internal predecessors, (2185), 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) [2023-08-31 00:09:53,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:09:53,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 725 of 1616 [2023-08-31 00:09:53,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:09:53,855 INFO L130 PetriNetUnfolder]: 170/333 cut-off events. [2023-08-31 00:09:53,855 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-08-31 00:09:53,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 333 events. 170/333 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1141 event pairs, 152 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 787. Up to 333 conditions per place. [2023-08-31 00:09:53,857 INFO L137 encePairwiseOnDemand]: 1612/1616 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-31 00:09:53,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 198 flow [2023-08-31 00:09:53,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 00:09:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 00:09:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2219 transitions. [2023-08-31 00:09:53,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577145214521452 [2023-08-31 00:09:53,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2219 transitions. [2023-08-31 00:09:53,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2219 transitions. [2023-08-31 00:09:53,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:09:53,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2219 transitions. [2023-08-31 00:09:53,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 739.6666666666666) internal successors, (2219), 3 states have internal predecessors, (2219), 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) [2023-08-31 00:09:53,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1616.0) internal successors, (6464), 4 states have internal predecessors, (6464), 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) [2023-08-31 00:09:53,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1616.0) internal successors, (6464), 4 states have internal predecessors, (6464), 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) [2023-08-31 00:09:53,873 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 108 flow. Second operand 3 states and 2219 transitions. [2023-08-31 00:09:53,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 198 flow [2023-08-31 00:09:53,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 00:09:53,877 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 116 flow [2023-08-31 00:09:53,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1616, PETRI_DIFFERENCE_MINUEND_FLOW=102, 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=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2023-08-31 00:09:53,878 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-31 00:09:53,878 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 116 flow [2023-08-31 00:09:53,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 728.3333333333334) internal successors, (2185), 3 states have internal predecessors, (2185), 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) [2023-08-31 00:09:53,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:09:53,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:09:53,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 00:09:53,882 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 00:09:53,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:09:53,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1338763587, now seen corresponding path program 1 times [2023-08-31 00:09:53,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:09:53,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803595432] [2023-08-31 00:09:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:09:53,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:09:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:09:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:09:54,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:09:54,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803595432] [2023-08-31 00:09:54,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803595432] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:09:54,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032219028] [2023-08-31 00:09:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:09:54,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:09:54,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:09:54,522 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) [2023-08-31 00:09:54,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 00:09:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:09:55,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 00:09:55,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:09:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:09:55,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 00:09:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:09:55,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032219028] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 00:09:55,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 00:09:55,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-31 00:09:55,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051952420] [2023-08-31 00:09:55,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 00:09:55,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 00:09:55,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:09:55,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 00:09:55,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-31 00:09:56,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 721 out of 1616 [2023-08-31 00:09:56,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 723.2857142857143) internal successors, (5063), 7 states have internal predecessors, (5063), 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) [2023-08-31 00:09:56,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:09:56,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 721 of 1616 [2023-08-31 00:09:56,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:09:56,386 INFO L130 PetriNetUnfolder]: 170/338 cut-off events. [2023-08-31 00:09:56,386 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-08-31 00:09:56,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 338 events. 170/338 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1167 event pairs, 152 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 772. Up to 333 conditions per place. [2023-08-31 00:09:56,388 INFO L137 encePairwiseOnDemand]: 1608/1616 looper letters, 41 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2023-08-31 00:09:56,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 230 flow [2023-08-31 00:09:56,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 00:09:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 00:09:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4383 transitions. [2023-08-31 00:09:56,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520420792079208 [2023-08-31 00:09:56,396 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4383 transitions. [2023-08-31 00:09:56,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4383 transitions. [2023-08-31 00:09:56,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:09:56,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4383 transitions. [2023-08-31 00:09:56,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 730.5) internal successors, (4383), 6 states have internal predecessors, (4383), 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) [2023-08-31 00:09:56,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1616.0) internal successors, (11312), 7 states have internal predecessors, (11312), 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) [2023-08-31 00:09:56,416 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1616.0) internal successors, (11312), 7 states have internal predecessors, (11312), 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) [2023-08-31 00:09:56,416 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 116 flow. Second operand 6 states and 4383 transitions. [2023-08-31 00:09:56,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 230 flow [2023-08-31 00:09:56,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 226 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 00:09:56,418 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 178 flow [2023-08-31 00:09:56,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1616, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=178, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2023-08-31 00:09:56,418 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-08-31 00:09:56,418 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 178 flow [2023-08-31 00:09:56,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 723.2857142857143) internal successors, (5063), 7 states have internal predecessors, (5063), 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) [2023-08-31 00:09:56,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:09:56,420 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:09:56,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 00:09:56,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:09:56,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 00:09:56,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:09:56,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2050164495, now seen corresponding path program 2 times [2023-08-31 00:09:56,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:09:56,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85855783] [2023-08-31 00:09:56,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:09:56,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:09:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:09:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:09:57,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:09:57,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85855783] [2023-08-31 00:09:57,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85855783] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:09:57,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842875374] [2023-08-31 00:09:57,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 00:09:57,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:09:57,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:09:57,269 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) [2023-08-31 00:09:57,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 00:09:58,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 00:09:58,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 00:09:58,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-31 00:09:58,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:09:58,327 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 00:09:58,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 53 [2023-08-31 00:09:58,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 00:09:58,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-31 00:09:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 00:09:58,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 00:09:58,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842875374] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:09:58,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 00:09:58,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-31 00:09:58,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623915579] [2023-08-31 00:09:58,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:09:58,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 00:09:58,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:09:58,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 00:09:58,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-31 00:09:58,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 712 out of 1616 [2023-08-31 00:09:58,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 714.75) internal successors, (2859), 4 states have internal predecessors, (2859), 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) [2023-08-31 00:09:58,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:09:58,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 712 of 1616 [2023-08-31 00:09:58,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:09:58,922 INFO L130 PetriNetUnfolder]: 178/363 cut-off events. [2023-08-31 00:09:58,922 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-08-31 00:09:58,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 363 events. 178/363 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1335 event pairs, 89 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 851. Up to 153 conditions per place. [2023-08-31 00:09:58,924 INFO L137 encePairwiseOnDemand]: 1611/1616 looper letters, 53 selfloop transitions, 5 changer transitions 7/65 dead transitions. [2023-08-31 00:09:58,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 351 flow [2023-08-31 00:09:58,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 00:09:58,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 00:09:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2907 transitions. [2023-08-31 00:09:58,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44972153465346537 [2023-08-31 00:09:58,929 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2907 transitions. [2023-08-31 00:09:58,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2907 transitions. [2023-08-31 00:09:58,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:09:58,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2907 transitions. [2023-08-31 00:09:58,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 726.75) internal successors, (2907), 4 states have internal predecessors, (2907), 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) [2023-08-31 00:09:58,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1616.0) internal successors, (8080), 5 states have internal predecessors, (8080), 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) [2023-08-31 00:09:58,941 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1616.0) internal successors, (8080), 5 states have internal predecessors, (8080), 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) [2023-08-31 00:09:58,941 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 178 flow. Second operand 4 states and 2907 transitions. [2023-08-31 00:09:58,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 351 flow [2023-08-31 00:09:58,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 65 transitions, 341 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-31 00:09:58,943 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 190 flow [2023-08-31 00:09:58,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1616, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-08-31 00:09:58,944 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-08-31 00:09:58,944 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 190 flow [2023-08-31 00:09:58,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 714.75) internal successors, (2859), 4 states have internal predecessors, (2859), 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) [2023-08-31 00:09:58,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:09:58,945 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:09:58,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 00:09:59,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:09:59,154 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 00:09:59,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:09:59,155 INFO L85 PathProgramCache]: Analyzing trace with hash 869410682, now seen corresponding path program 1 times [2023-08-31 00:09:59,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:09:59,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308848352] [2023-08-31 00:09:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:09:59,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:09:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:09:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:09:59,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:09:59,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308848352] [2023-08-31 00:09:59,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308848352] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:09:59,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353801496] [2023-08-31 00:09:59,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:09:59,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:09:59,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:09:59,975 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) [2023-08-31 00:09:59,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 00:10:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:10:00,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-31 00:10:00,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:10:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:10:01,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 00:10:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:10:01,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353801496] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 00:10:01,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 00:10:01,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-31 00:10:01,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845746059] [2023-08-31 00:10:01,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 00:10:01,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-31 00:10:01,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:10:01,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-31 00:10:01,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-08-31 00:10:01,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 719 out of 1616 [2023-08-31 00:10:01,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 190 flow. Second operand has 17 states, 17 states have (on average 720.5882352941177) internal successors, (12250), 17 states have internal predecessors, (12250), 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) [2023-08-31 00:10:01,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:10:01,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 719 of 1616 [2023-08-31 00:10:01,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:10:03,921 INFO L130 PetriNetUnfolder]: 166/348 cut-off events. [2023-08-31 00:10:03,922 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-08-31 00:10:03,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 348 events. 166/348 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1236 event pairs, 148 based on Foata normal form. 9/350 useless extension candidates. Maximal degree in co-relation 902. Up to 334 conditions per place. [2023-08-31 00:10:03,924 INFO L137 encePairwiseOnDemand]: 1608/1616 looper letters, 42 selfloop transitions, 17 changer transitions 0/59 dead transitions. [2023-08-31 00:10:03,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 356 flow [2023-08-31 00:10:03,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 00:10:03,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 00:10:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 8702 transitions. [2023-08-31 00:10:03,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4487417491749175 [2023-08-31 00:10:03,938 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 8702 transitions. [2023-08-31 00:10:03,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 8702 transitions. [2023-08-31 00:10:03,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:10:03,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 8702 transitions. [2023-08-31 00:10:03,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 725.1666666666666) internal successors, (8702), 12 states have internal predecessors, (8702), 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) [2023-08-31 00:10:03,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1616.0) internal successors, (21008), 13 states have internal predecessors, (21008), 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) [2023-08-31 00:10:03,971 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1616.0) internal successors, (21008), 13 states have internal predecessors, (21008), 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) [2023-08-31 00:10:03,971 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 190 flow. Second operand 12 states and 8702 transitions. [2023-08-31 00:10:03,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 356 flow [2023-08-31 00:10:03,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 00:10:03,976 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 328 flow [2023-08-31 00:10:03,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1616, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=328, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-31 00:10:03,978 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2023-08-31 00:10:03,978 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 328 flow [2023-08-31 00:10:03,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 720.5882352941177) internal successors, (12250), 17 states have internal predecessors, (12250), 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) [2023-08-31 00:10:03,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:10:03,982 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:10:03,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 00:10:04,193 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 [2023-08-31 00:10:04,196 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 00:10:04,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:10:04,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1641300154, now seen corresponding path program 2 times [2023-08-31 00:10:04,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:10:04,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910771860] [2023-08-31 00:10:04,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:10:04,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:10:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:10:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:10:05,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:10:05,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910771860] [2023-08-31 00:10:05,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910771860] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:10:05,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083556876] [2023-08-31 00:10:05,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 00:10:05,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:10:05,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:10:05,430 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) [2023-08-31 00:10:05,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 00:10:06,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 00:10:06,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 00:10:06,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 123 conjunts are in the unsatisfiable core [2023-08-31 00:10:06,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:10:06,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:06,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:10:11,629 WARN L222 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 1048 DAG size of output: 277 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-31 00:10:11,634 INFO L321 Elim1Store]: treesize reduction 8778, result has 6.9 percent of original size [2023-08-31 00:10:11,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 30 case distinctions, treesize of input 153 treesize of output 731 Killed by 15