/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:17:18,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:17:18,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:17:18,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:17:18,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:17:18,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:17:18,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:17:18,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:17:18,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:17:18,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:17:18,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:17:18,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:17:18,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:17:18,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:17:18,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:17:18,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:17:18,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:17:18,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:17:18,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:17:18,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:17:18,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:17:18,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:17:18,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:17:18,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:17:18,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:17:18,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:17:18,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:17:18,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:17:18,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:17:18,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:17:18,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:17:18,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:17:18,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:17:18,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:17:18,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:17:18,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:17:18,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:17:18,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:17:18,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:17:18,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:17:18,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:17:18,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 07:17:18,139 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:17:18,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:17:18,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:17:18,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:17:18,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:17:18,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:17:18,141 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:17:18,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:17:18,141 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:17:18,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:17:18,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:17:18,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:17:18,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:17:18,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:17:18,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:17:18,142 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:17:18,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:17:18,142 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:17:18,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:17:18,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:17:18,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:17:18,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:17:18,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:17:18,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:17:18,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:17:18,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:17:18,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:17:18,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:17:18,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:17:18,143 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:17:18,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:17:18,144 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:17:18,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:17:18,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:17:18,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:17:18,357 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:17:18,357 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:17:18,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i [2023-01-28 07:17:19,213 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:17:19,634 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:17:19,634 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i [2023-01-28 07:17:19,669 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bf5522a8/83d2907dadc24d3d86533cc01a9639bb/FLAG80966cc30 [2023-01-28 07:17:19,818 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bf5522a8/83d2907dadc24d3d86533cc01a9639bb [2023-01-28 07:17:19,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:17:19,821 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:17:19,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:17:19,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:17:19,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:17:19,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:17:19" (1/1) ... [2023-01-28 07:17:19,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18db98c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:17:19, skipping insertion in model container [2023-01-28 07:17:19,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:17:19" (1/1) ... [2023-01-28 07:17:19,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:17:19,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:17:20,142 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i[5469,5482] [2023-01-28 07:17:23,397 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-01-28 07:17:23,749 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-28 07:17:23,749 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-28 07:17:23,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:17:23,799 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:17:23,816 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i[5469,5482] [2023-01-28 07:17:23,935 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-01-28 07:17:23,973 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-28 07:17:23,973 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-28 07:17:23,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:17:24,312 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:17:24,312 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:17:24,312 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:17:24,312 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:17:24,312 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:17:24,313 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:17:24,313 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:17:24,317 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:17:24,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:17:24 WrapperNode [2023-01-28 07:17:24,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:17:24,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:17:24,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:17:24,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:17:24,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:17:24" (1/1) ... [2023-01-28 07:17:24,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:17:24" (1/1) ... [2023-01-28 07:17:24,462 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 75, statements flattened = 829 [2023-01-28 07:17:24,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:17:24,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:17:24,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:17:24,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:17:24,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:17:24" (1/1) ... [2023-01-28 07:17:24,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:17:24" (1/1) ... [2023-01-28 07:17:24,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:17:24" (1/1) ... [2023-01-28 07:17:24,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:17:24" (1/1) ... [2023-01-28 07:17:24,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:17:24" (1/1) ... [2023-01-28 07:17:24,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:17:24" (1/1) ... [2023-01-28 07:17:24,531 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:17:24" (1/1) ... [2023-01-28 07:17:24,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:17:24" (1/1) ... [2023-01-28 07:17:24,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:17:24,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:17:24,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:17:24,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:17:24,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:17:24" (1/1) ... [2023-01-28 07:17:24,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:17:24,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:17:24,571 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) [2023-01-28 07:17:24,578 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 [2023-01-28 07:17:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 07:17:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 07:17:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:17:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 07:17:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2023-01-28 07:17:24,604 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2023-01-28 07:17:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:17:24,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:17:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-01-28 07:17:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:17:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 07:17:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:17:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_configure [2023-01-28 07:17:24,605 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_configure [2023-01-28 07:17:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:17:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:17:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:17:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-01-28 07:17:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:17:24,607 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:17:24,943 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:17:24,944 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:17:25,550 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:17:25,619 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:17:25,619 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-01-28 07:17:25,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:17:25 BoogieIcfgContainer [2023-01-28 07:17:25,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:17:25,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:17:25,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:17:25,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:17:25,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:17:19" (1/3) ... [2023-01-28 07:17:25,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1eca95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:17:25, skipping insertion in model container [2023-01-28 07:17:25,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:17:24" (2/3) ... [2023-01-28 07:17:25,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1eca95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:17:25, skipping insertion in model container [2023-01-28 07:17:25,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:17:25" (3/3) ... [2023-01-28 07:17:25,627 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i [2023-01-28 07:17:25,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:17:25,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-01-28 07:17:25,653 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:17:25,767 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 07:17:25,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 858 places, 911 transitions, 1838 flow [2023-01-28 07:17:25,972 INFO L130 PetriNetUnfolder]: 60/909 cut-off events. [2023-01-28 07:17:25,972 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 07:17:25,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 909 events. 60/909 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1669 event pairs, 0 based on Foata normal form. 0/846 useless extension candidates. Maximal degree in co-relation 752. Up to 9 conditions per place. [2023-01-28 07:17:25,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 858 places, 911 transitions, 1838 flow [2023-01-28 07:17:25,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 848 places, 901 transitions, 1811 flow [2023-01-28 07:17:25,997 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:17:26,009 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 848 places, 901 transitions, 1811 flow [2023-01-28 07:17:26,017 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 848 places, 901 transitions, 1811 flow [2023-01-28 07:17:26,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 848 places, 901 transitions, 1811 flow [2023-01-28 07:17:26,198 INFO L130 PetriNetUnfolder]: 60/901 cut-off events. [2023-01-28 07:17:26,198 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 07:17:26,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 901 events. 60/901 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1537 event pairs, 0 based on Foata normal form. 0/838 useless extension candidates. Maximal degree in co-relation 752. Up to 9 conditions per place. [2023-01-28 07:17:26,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 49770 [2023-01-28 07:18:57,808 WARN L222 SmtUtils]: Spent 8.37s on a formula simplification that was a NOOP. DAG size: 303 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 07:19:04,498 WARN L222 SmtUtils]: Spent 6.69s on a formula simplification that was a NOOP. DAG size: 285 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 07:19:22,097 WARN L222 SmtUtils]: Spent 17.60s on a formula simplification. DAG size of input: 309 DAG size of output: 307 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 07:19:28,905 WARN L222 SmtUtils]: Spent 6.80s on a formula simplification that was a NOOP. DAG size: 288 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 07:20:06,096 WARN L222 SmtUtils]: Spent 33.09s on a formula simplification. DAG size of input: 659 DAG size of output: 657 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 07:20:19,694 WARN L222 SmtUtils]: Spent 13.58s 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) [2023-01-28 07:22:27,920 WARN L222 SmtUtils]: Spent 2.14m on a formula simplification. DAG size of input: 662 DAG size of output: 660 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 07:23:24,383 WARN L222 SmtUtils]: Spent 56.45s 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) [2023-01-28 07:23:33,491 INFO L134 LiptonReduction]: Checked pairs total: 39117 [2023-01-28 07:23:33,491 INFO L136 LiptonReduction]: Total number of compositions: 1006 [2023-01-28 07:23:33,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:23:33,513 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=false, 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;@b403e6e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:23:33,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-28 07:23:33,520 INFO L130 PetriNetUnfolder]: 4/9 cut-off events. [2023-01-28 07:23:33,520 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:23:33,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:23:33,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-01-28 07:23:33,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 07:23:33,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:23:33,525 INFO L85 PathProgramCache]: Analyzing trace with hash 3454771, now seen corresponding path program 1 times [2023-01-28 07:23:33,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:23:33,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100567793] [2023-01-28 07:23:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:23:33,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:23:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:23:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:23:33,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:23:33,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100567793] [2023-01-28 07:23:33,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100567793] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:23:33,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:23:33,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:23:33,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562935196] [2023-01-28 07:23:33,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:23:33,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 07:23:33,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:23:33,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 07:23:33,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 07:23:33,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 874 out of 1917 [2023-01-28 07:23:33,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 54 transitions, 117 flow. Second operand has 2 states, 2 states have (on average 875.5) internal successors, (1751), 2 states have internal predecessors, (1751), 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) [2023-01-28 07:23:33,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:23:33,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 874 of 1917 [2023-01-28 07:23:33,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:23:34,197 INFO L130 PetriNetUnfolder]: 115/229 cut-off events. [2023-01-28 07:23:34,198 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-01-28 07:23:34,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 229 events. 115/229 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 649 event pairs, 105 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 326. Up to 230 conditions per place. [2023-01-28 07:23:34,200 INFO L137 encePairwiseOnDemand]: 1904/1917 looper letters, 40 selfloop transitions, 0 changer transitions 1/41 dead transitions. [2023-01-28 07:23:34,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 173 flow [2023-01-28 07:23:34,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 07:23:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 07:23:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1802 transitions. [2023-01-28 07:23:34,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700052164840897 [2023-01-28 07:23:34,219 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1802 transitions. [2023-01-28 07:23:34,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1802 transitions. [2023-01-28 07:23:34,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:23:34,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1802 transitions. [2023-01-28 07:23:34,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 901.0) internal successors, (1802), 2 states have internal predecessors, (1802), 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) [2023-01-28 07:23:34,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1917.0) internal successors, (5751), 3 states have internal predecessors, (5751), 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) [2023-01-28 07:23:34,242 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1917.0) internal successors, (5751), 3 states have internal predecessors, (5751), 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) [2023-01-28 07:23:34,245 INFO L175 Difference]: Start difference. First operand has 39 places, 54 transitions, 117 flow. Second operand 2 states and 1802 transitions. [2023-01-28 07:23:34,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 173 flow [2023-01-28 07:23:34,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:23:34,253 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 84 flow [2023-01-28 07:23:34,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, 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=84, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2023-01-28 07:23:34,257 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-01-28 07:23:34,257 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 84 flow [2023-01-28 07:23:34,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 875.5) internal successors, (1751), 2 states have internal predecessors, (1751), 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) [2023-01-28 07:23:34,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:23:34,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:23:34,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:23:34,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 07:23:34,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:23:34,267 INFO L85 PathProgramCache]: Analyzing trace with hash 739763751, now seen corresponding path program 1 times [2023-01-28 07:23:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:23:34,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669208304] [2023-01-28 07:23:34,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:23:34,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:23:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:23:34,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:23:34,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:23:34,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669208304] [2023-01-28 07:23:34,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669208304] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:23:34,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:23:34,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:23:34,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930587552] [2023-01-28 07:23:34,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:23:34,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:23:34,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:23:34,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:23:34,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:23:34,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 856 out of 1917 [2023-01-28 07:23:34,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 858.3333333333334) internal successors, (2575), 3 states have internal predecessors, (2575), 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) [2023-01-28 07:23:34,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:23:34,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 856 of 1917 [2023-01-28 07:23:34,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:23:35,302 INFO L130 PetriNetUnfolder]: 106/213 cut-off events. [2023-01-28 07:23:35,303 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 07:23:35,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 213 events. 106/213 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 588 event pairs, 96 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 433. Up to 213 conditions per place. [2023-01-28 07:23:35,304 INFO L137 encePairwiseOnDemand]: 1913/1917 looper letters, 39 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-01-28 07:23:35,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 168 flow [2023-01-28 07:23:35,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:23:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:23:35,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2611 transitions. [2023-01-28 07:23:35,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540079986089376 [2023-01-28 07:23:35,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2611 transitions. [2023-01-28 07:23:35,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2611 transitions. [2023-01-28 07:23:35,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:23:35,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2611 transitions. [2023-01-28 07:23:35,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 870.3333333333334) internal successors, (2611), 3 states have internal predecessors, (2611), 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) [2023-01-28 07:23:35,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1917.0) internal successors, (7668), 4 states have internal predecessors, (7668), 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) [2023-01-28 07:23:35,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1917.0) internal successors, (7668), 4 states have internal predecessors, (7668), 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) [2023-01-28 07:23:35,324 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 84 flow. Second operand 3 states and 2611 transitions. [2023-01-28 07:23:35,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 168 flow [2023-01-28 07:23:35,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:23:35,325 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 98 flow [2023-01-28 07:23:35,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2023-01-28 07:23:35,326 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -1 predicate places. [2023-01-28 07:23:35,326 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 98 flow [2023-01-28 07:23:35,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 858.3333333333334) internal successors, (2575), 3 states have internal predecessors, (2575), 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) [2023-01-28 07:23:35,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:23:35,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:23:35,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:23:35,329 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 07:23:35,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:23:35,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1340012363, now seen corresponding path program 1 times [2023-01-28 07:23:35,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:23:35,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283001040] [2023-01-28 07:23:35,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:23:35,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:23:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:23:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:23:35,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:23:35,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283001040] [2023-01-28 07:23:35,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283001040] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:23:35,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863107576] [2023-01-28 07:23:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:23:35,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:23:35,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:23:35,946 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) [2023-01-28 07:23:35,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 07:23:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:23:36,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 07:23:36,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:23:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 07:23:36,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 07:23:36,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863107576] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:23:36,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 07:23:36,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-01-28 07:23:36,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802088819] [2023-01-28 07:23:36,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:23:36,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:23:36,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:23:36,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:23:36,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:23:36,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 822 out of 1917 [2023-01-28 07:23:36,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 824.6666666666666) internal successors, (2474), 3 states have internal predecessors, (2474), 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) [2023-01-28 07:23:36,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:23:36,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 822 of 1917 [2023-01-28 07:23:36,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:23:36,801 INFO L130 PetriNetUnfolder]: 145/292 cut-off events. [2023-01-28 07:23:36,801 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 07:23:36,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 292 events. 145/292 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1051 event pairs, 42 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 597. Up to 202 conditions per place. [2023-01-28 07:23:36,802 INFO L137 encePairwiseOnDemand]: 1912/1917 looper letters, 49 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-01-28 07:23:36,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 229 flow [2023-01-28 07:23:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:23:36,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:23:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2519 transitions. [2023-01-28 07:23:36,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380107807337854 [2023-01-28 07:23:36,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2519 transitions. [2023-01-28 07:23:36,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2519 transitions. [2023-01-28 07:23:36,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:23:36,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2519 transitions. [2023-01-28 07:23:36,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 839.6666666666666) internal successors, (2519), 3 states have internal predecessors, (2519), 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) [2023-01-28 07:23:36,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1917.0) internal successors, (7668), 4 states have internal predecessors, (7668), 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) [2023-01-28 07:23:36,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1917.0) internal successors, (7668), 4 states have internal predecessors, (7668), 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) [2023-01-28 07:23:36,821 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 98 flow. Second operand 3 states and 2519 transitions. [2023-01-28 07:23:36,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 229 flow [2023-01-28 07:23:36,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 225 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 07:23:36,823 INFO L231 Difference]: Finished difference. Result has 40 places, 44 transitions, 120 flow [2023-01-28 07:23:36,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2023-01-28 07:23:36,824 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-01-28 07:23:36,824 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 120 flow [2023-01-28 07:23:36,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 824.6666666666666) internal successors, (2474), 3 states have internal predecessors, (2474), 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) [2023-01-28 07:23:36,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:23:36,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:23:36,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 07:23:37,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:23:37,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 07:23:37,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:23:37,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1409301911, now seen corresponding path program 1 times [2023-01-28 07:23:37,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:23:37,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911719753] [2023-01-28 07:23:37,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:23:37,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:23:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:23:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:23:37,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:23:37,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911719753] [2023-01-28 07:23:37,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911719753] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:23:37,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599599512] [2023-01-28 07:23:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:23:37,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:23:37,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:23:37,677 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) [2023-01-28 07:23:37,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 07:23:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:23:38,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 07:23:38,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:23:38,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 07:23:38,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-28 07:23:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 07:23:38,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 07:23:38,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599599512] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:23:38,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 07:23:38,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-01-28 07:23:38,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896098753] [2023-01-28 07:23:38,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:23:38,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:23:38,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:23:38,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:23:38,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 07:23:38,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 819 out of 1917 [2023-01-28 07:23:38,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 820.8) internal successors, (4104), 5 states have internal predecessors, (4104), 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) [2023-01-28 07:23:38,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:23:38,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 819 of 1917 [2023-01-28 07:23:38,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:23:38,840 INFO L130 PetriNetUnfolder]: 139/280 cut-off events. [2023-01-28 07:23:38,840 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-28 07:23:38,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 280 events. 139/280 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 957 event pairs, 60 based on Foata normal form. 6/276 useless extension candidates. Maximal degree in co-relation 687. Up to 197 conditions per place. [2023-01-28 07:23:38,842 INFO L137 encePairwiseOnDemand]: 1913/1917 looper letters, 43 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-01-28 07:23:38,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 221 flow [2023-01-28 07:23:38,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:23:38,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:23:38,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3321 transitions. [2023-01-28 07:23:38,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43309859154929575 [2023-01-28 07:23:38,848 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3321 transitions. [2023-01-28 07:23:38,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3321 transitions. [2023-01-28 07:23:38,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:23:38,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3321 transitions. [2023-01-28 07:23:38,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 830.25) internal successors, (3321), 4 states have internal predecessors, (3321), 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) [2023-01-28 07:23:38,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1917.0) internal successors, (9585), 5 states have internal predecessors, (9585), 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) [2023-01-28 07:23:38,871 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1917.0) internal successors, (9585), 5 states have internal predecessors, (9585), 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) [2023-01-28 07:23:38,872 INFO L175 Difference]: Start difference. First operand has 40 places, 44 transitions, 120 flow. Second operand 4 states and 3321 transitions. [2023-01-28 07:23:38,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 221 flow [2023-01-28 07:23:38,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:23:38,874 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 120 flow [2023-01-28 07:23:38,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2023-01-28 07:23:38,875 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-01-28 07:23:38,875 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 120 flow [2023-01-28 07:23:38,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 820.8) internal successors, (4104), 5 states have internal predecessors, (4104), 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) [2023-01-28 07:23:38,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:23:38,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:23:38,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 07:23:39,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-28 07:23:39,087 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 07:23:39,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:23:39,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1332905514, now seen corresponding path program 1 times [2023-01-28 07:23:39,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:23:39,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816651362] [2023-01-28 07:23:39,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:23:39,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:23:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:23:39,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:23:39,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:23:39,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816651362] [2023-01-28 07:23:39,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816651362] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:23:39,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234958308] [2023-01-28 07:23:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:23:39,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:23:39,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:23:39,705 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) [2023-01-28 07:23:39,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 07:23:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:23:40,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 07:23:40,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:23:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:23:40,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 07:23:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:23:40,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234958308] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 07:23:40,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 07:23:40,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-01-28 07:23:40,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201926675] [2023-01-28 07:23:40,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 07:23:40,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 07:23:40,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:23:40,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 07:23:40,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-01-28 07:23:40,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 852 out of 1917 [2023-01-28 07:23:40,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 120 flow. Second operand has 8 states, 8 states have (on average 854.625) internal successors, (6837), 8 states have internal predecessors, (6837), 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) [2023-01-28 07:23:40,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:23:40,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 852 of 1917 [2023-01-28 07:23:40,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:23:41,193 INFO L130 PetriNetUnfolder]: 139/285 cut-off events. [2023-01-28 07:23:41,194 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-01-28 07:23:41,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 285 events. 139/285 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 942 event pairs, 109 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 687. Up to 275 conditions per place. [2023-01-28 07:23:41,195 INFO L137 encePairwiseOnDemand]: 1909/1917 looper letters, 36 selfloop transitions, 12 changer transitions 0/48 dead transitions. [2023-01-28 07:23:41,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 232 flow [2023-01-28 07:23:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:23:41,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:23:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6019 transitions. [2023-01-28 07:23:41,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485431105149415 [2023-01-28 07:23:41,204 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6019 transitions. [2023-01-28 07:23:41,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6019 transitions. [2023-01-28 07:23:41,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:23:41,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6019 transitions. [2023-01-28 07:23:41,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 859.8571428571429) internal successors, (6019), 7 states have internal predecessors, (6019), 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) [2023-01-28 07:23:41,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1917.0) internal successors, (15336), 8 states have internal predecessors, (15336), 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) [2023-01-28 07:23:41,226 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1917.0) internal successors, (15336), 8 states have internal predecessors, (15336), 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) [2023-01-28 07:23:41,226 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 120 flow. Second operand 7 states and 6019 transitions. [2023-01-28 07:23:41,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 232 flow [2023-01-28 07:23:41,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:23:41,228 INFO L231 Difference]: Finished difference. Result has 44 places, 48 transitions, 156 flow [2023-01-28 07:23:41,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=44, PETRI_TRANSITIONS=48} [2023-01-28 07:23:41,228 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-01-28 07:23:41,228 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 48 transitions, 156 flow [2023-01-28 07:23:41,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 854.625) internal successors, (6837), 8 states have internal predecessors, (6837), 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) [2023-01-28 07:23:41,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:23:41,230 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:23:41,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 07:23:41,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:23:41,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 07:23:41,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:23:41,442 INFO L85 PathProgramCache]: Analyzing trace with hash 174776568, now seen corresponding path program 2 times [2023-01-28 07:23:41,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:23:41,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175757404] [2023-01-28 07:23:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:23:41,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:23:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:23:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:23:42,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:23:42,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175757404] [2023-01-28 07:23:42,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175757404] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:23:42,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009778275] [2023-01-28 07:23:42,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 07:23:42,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:23:42,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:23:42,014 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) [2023-01-28 07:23:42,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 07:23:42,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 07:23:42,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 07:23:42,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 07:23:43,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:23:43,282 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 [2023-01-28 07:23:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 07:23:43,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 07:23:43,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009778275] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:23:43,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 07:23:43,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-01-28 07:23:43,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845898413] [2023-01-28 07:23:43,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:23:43,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:23:43,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:23:43,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:23:43,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-01-28 07:23:43,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 819 out of 1917 [2023-01-28 07:23:43,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 822.75) internal successors, (3291), 4 states have internal predecessors, (3291), 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) [2023-01-28 07:23:43,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:23:43,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 819 of 1917 [2023-01-28 07:23:43,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:23:43,984 INFO L130 PetriNetUnfolder]: 136/286 cut-off events. [2023-01-28 07:23:43,984 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-01-28 07:23:43,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 286 events. 136/286 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 989 event pairs, 54 based on Foata normal form. 8/285 useless extension candidates. Maximal degree in co-relation 680. Up to 159 conditions per place. [2023-01-28 07:23:43,985 INFO L137 encePairwiseOnDemand]: 1910/1917 looper letters, 45 selfloop transitions, 7 changer transitions 7/59 dead transitions. [2023-01-28 07:23:43,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 308 flow [2023-01-28 07:23:43,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:23:43,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:23:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3326 transitions. [2023-01-28 07:23:43,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337506520605112 [2023-01-28 07:23:43,991 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3326 transitions. [2023-01-28 07:23:43,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3326 transitions. [2023-01-28 07:23:43,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:23:43,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3326 transitions. [2023-01-28 07:23:43,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 831.5) internal successors, (3326), 4 states have internal predecessors, (3326), 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) [2023-01-28 07:23:44,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1917.0) internal successors, (9585), 5 states have internal predecessors, (9585), 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) [2023-01-28 07:23:44,006 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1917.0) internal successors, (9585), 5 states have internal predecessors, (9585), 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) [2023-01-28 07:23:44,006 INFO L175 Difference]: Start difference. First operand has 44 places, 48 transitions, 156 flow. Second operand 4 states and 3326 transitions. [2023-01-28 07:23:44,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 308 flow [2023-01-28 07:23:44,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 285 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-01-28 07:23:44,008 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 161 flow [2023-01-28 07:23:44,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2023-01-28 07:23:44,009 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-01-28 07:23:44,009 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 161 flow [2023-01-28 07:23:44,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 822.75) internal successors, (3291), 4 states have internal predecessors, (3291), 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) [2023-01-28 07:23:44,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:23:44,010 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:23:44,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 07:23:44,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:23:44,219 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 07:23:44,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:23:44,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1123117706, now seen corresponding path program 1 times [2023-01-28 07:23:44,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:23:44,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724999165] [2023-01-28 07:23:44,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:23:44,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:23:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:23:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:23:45,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:23:45,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724999165] [2023-01-28 07:23:45,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724999165] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:23:45,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523292642] [2023-01-28 07:23:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:23:45,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:23:45,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:23:45,126 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 07:23:45,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 07:23:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:23:47,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 07:23:47,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:23:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:23:47,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 07:23:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:23:47,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523292642] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 07:23:47,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 07:23:47,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-01-28 07:23:47,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007427615] [2023-01-28 07:23:47,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 07:23:47,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 07:23:47,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:23:47,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 07:23:47,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2023-01-28 07:23:47,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 856 out of 1917 [2023-01-28 07:23:47,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 161 flow. Second operand has 17 states, 17 states have (on average 857.8235294117648) internal successors, (14583), 17 states have internal predecessors, (14583), 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) [2023-01-28 07:23:47,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:23:47,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 856 of 1917 [2023-01-28 07:23:47,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:23:49,467 INFO L130 PetriNetUnfolder]: 122/281 cut-off events. [2023-01-28 07:23:49,467 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 07:23:49,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 281 events. 122/281 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 983 event pairs, 102 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 748. Up to 267 conditions per place. [2023-01-28 07:23:49,468 INFO L137 encePairwiseOnDemand]: 1909/1917 looper letters, 41 selfloop transitions, 17 changer transitions 0/58 dead transitions. [2023-01-28 07:23:49,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 313 flow [2023-01-28 07:23:49,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 07:23:49,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 07:23:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 10344 transitions. [2023-01-28 07:23:49,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44966092853416795 [2023-01-28 07:23:49,482 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 10344 transitions. [2023-01-28 07:23:49,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 10344 transitions. [2023-01-28 07:23:49,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:23:49,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 10344 transitions. [2023-01-28 07:23:49,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 862.0) internal successors, (10344), 12 states have internal predecessors, (10344), 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) [2023-01-28 07:23:49,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1917.0) internal successors, (24921), 13 states have internal predecessors, (24921), 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) [2023-01-28 07:23:49,540 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1917.0) internal successors, (24921), 13 states have internal predecessors, (24921), 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) [2023-01-28 07:23:49,540 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 161 flow. Second operand 12 states and 10344 transitions. [2023-01-28 07:23:49,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 313 flow [2023-01-28 07:23:49,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 299 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 07:23:49,545 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 279 flow [2023-01-28 07:23:49,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=279, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-01-28 07:23:49,546 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2023-01-28 07:23:49,547 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 279 flow [2023-01-28 07:23:49,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 857.8235294117648) internal successors, (14583), 17 states have internal predecessors, (14583), 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) [2023-01-28 07:23:49,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:23:49,550 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:23:49,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 07:23:49,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:23:49,761 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 07:23:49,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:23:49,762 INFO L85 PathProgramCache]: Analyzing trace with hash 8662986, now seen corresponding path program 2 times [2023-01-28 07:23:49,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:23:49,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665936652] [2023-01-28 07:23:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:23:49,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:23:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:23:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:23:50,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:23:50,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665936652] [2023-01-28 07:23:50,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665936652] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:23:50,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990993366] [2023-01-28 07:23:50,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 07:23:50,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:23:50,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:23:50,727 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 07:23:50,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 07:23:51,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 07:23:51,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 07:23:51,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 07:23:51,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:23:52,315 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 [2023-01-28 07:23:52,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 07:23:52,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2023-01-28 07:23:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-01-28 07:23:52,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 07:23:52,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990993366] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:23:52,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 07:23:52,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 16 [2023-01-28 07:23:52,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637525610] [2023-01-28 07:23:52,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:23:52,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:23:52,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:23:52,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:23:52,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-01-28 07:23:52,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 816 out of 1917 [2023-01-28 07:23:52,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 818.6666666666666) internal successors, (4912), 6 states have internal predecessors, (4912), 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) [2023-01-28 07:23:52,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:23:52,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 816 of 1917 [2023-01-28 07:23:52,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:23:53,189 INFO L130 PetriNetUnfolder]: 116/269 cut-off events. [2023-01-28 07:23:53,189 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-01-28 07:23:53,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 269 events. 116/269 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 963 event pairs, 52 based on Foata normal form. 6/268 useless extension candidates. Maximal degree in co-relation 712. Up to 159 conditions per place. [2023-01-28 07:23:53,189 INFO L137 encePairwiseOnDemand]: 1911/1917 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2023-01-28 07:23:53,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 437 flow [2023-01-28 07:23:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:23:53,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:23:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4129 transitions. [2023-01-28 07:23:53,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307772561293688 [2023-01-28 07:23:53,196 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4129 transitions. [2023-01-28 07:23:53,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4129 transitions. [2023-01-28 07:23:53,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:23:53,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4129 transitions. [2023-01-28 07:23:53,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 825.8) internal successors, (4129), 5 states have internal predecessors, (4129), 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) [2023-01-28 07:23:53,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1917.0) internal successors, (11502), 6 states have internal predecessors, (11502), 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) [2023-01-28 07:23:53,209 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1917.0) internal successors, (11502), 6 states have internal predecessors, (11502), 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) [2023-01-28 07:23:53,209 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 279 flow. Second operand 5 states and 4129 transitions. [2023-01-28 07:23:53,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 437 flow [2023-01-28 07:23:53,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 413 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-28 07:23:53,211 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-01-28 07:23:53,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-01-28 07:23:53,211 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2023-01-28 07:23:53,211 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-01-28 07:23:53,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 818.6666666666666) internal successors, (4912), 6 states have internal predecessors, (4912), 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) [2023-01-28 07:23:53,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-01-28 07:23:53,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-01-28 07:23:53,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-01-28 07:23:53,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-01-28 07:23:53,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-01-28 07:23:53,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-01-28 07:23:53,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-01-28 07:23:53,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 07:23:53,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:23:53,423 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-01-28 07:23:53,427 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:23:53,427 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:23:53,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:23:53 BasicIcfg [2023-01-28 07:23:53,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:23:53,429 INFO L158 Benchmark]: Toolchain (without parser) took 393607.75ms. Allocated memory was 339.7MB in the beginning and 589.3MB in the end (delta: 249.6MB). Free memory was 296.7MB in the beginning and 402.2MB in the end (delta: -105.6MB). Peak memory consumption was 400.4MB. Max. memory is 16.0GB. [2023-01-28 07:23:53,429 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:23:53,429 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4495.38ms. Allocated memory was 339.7MB in the beginning and 408.9MB in the end (delta: 69.2MB). Free memory was 296.7MB in the beginning and 350.9MB in the end (delta: -54.2MB). Peak memory consumption was 128.7MB. Max. memory is 16.0GB. [2023-01-28 07:23:53,429 INFO L158 Benchmark]: Boogie Procedure Inliner took 144.66ms. Allocated memory is still 408.9MB. Free memory was 350.9MB in the beginning and 339.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 07:23:53,429 INFO L158 Benchmark]: Boogie Preprocessor took 82.90ms. Allocated memory is still 408.9MB. Free memory was 339.3MB in the beginning and 333.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. [2023-01-28 07:23:53,430 INFO L158 Benchmark]: RCFGBuilder took 1071.86ms. Allocated memory is still 408.9MB. Free memory was 333.0MB in the beginning and 252.3MB in the end (delta: 80.7MB). Peak memory consumption was 79.7MB. Max. memory is 16.0GB. [2023-01-28 07:23:53,430 INFO L158 Benchmark]: TraceAbstraction took 387805.36ms. Allocated memory was 408.9MB in the beginning and 589.3MB in the end (delta: 180.4MB). Free memory was 251.2MB in the beginning and 402.2MB in the end (delta: -151.0MB). Peak memory consumption was 283.1MB. Max. memory is 16.0GB. [2023-01-28 07:23:53,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 4495.38ms. Allocated memory was 339.7MB in the beginning and 408.9MB in the end (delta: 69.2MB). Free memory was 296.7MB in the beginning and 350.9MB in the end (delta: -54.2MB). Peak memory consumption was 128.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 144.66ms. Allocated memory is still 408.9MB. Free memory was 350.9MB in the beginning and 339.3MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Preprocessor took 82.90ms. Allocated memory is still 408.9MB. Free memory was 339.3MB in the beginning and 333.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. * RCFGBuilder took 1071.86ms. Allocated memory is still 408.9MB. Free memory was 333.0MB in the beginning and 252.3MB in the end (delta: 80.7MB). Peak memory consumption was 79.7MB. Max. memory is 16.0GB. * TraceAbstraction took 387805.36ms. Allocated memory was 408.9MB in the beginning and 589.3MB in the end (delta: 180.4MB). Free memory was 251.2MB in the beginning and 402.2MB in the end (delta: -151.0MB). Peak memory consumption was 283.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 367.5s, 848 PlacesBefore, 39 PlacesAfterwards, 901 TransitionsBefore, 54 TransitionsAfterwards, 49770 CoEnabledTransitionPairs, 11 FixpointIterations, 559 TrivialSequentialCompositions, 280 ConcurrentSequentialCompositions, 85 TrivialYvCompositions, 44 ConcurrentYvCompositions, 38 ChoiceCompositions, 1006 TotalNumberOfCompositions, 39117 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36303, independent: 36127, independent conditional: 0, independent unconditional: 36127, dependent: 176, dependent conditional: 0, dependent unconditional: 176, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 26140, independent: 26076, independent conditional: 0, independent unconditional: 26076, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 36303, independent: 10051, independent conditional: 0, independent unconditional: 10051, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 26140, unknown conditional: 0, unknown unconditional: 26140] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 174]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 174]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 174]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 1134 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 387.6s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 367.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1018 IncrementalHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 0 mSDtfsCounter, 1018 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=279occurred in iteration=7, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 5.4s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 198 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 216 ConstructedInterpolants, 2 QuantifiedInterpolants, 1057 SizeOfPredicates, 92 NumberOfNonLiveVariables, 7017 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 67/167 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 07:23:53,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...