/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_open_pc8736x_gpio_change.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:31:51,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:31:51,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:31:51,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:31:51,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:31:51,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:31:51,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:31:51,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:31:51,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:31:51,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:31:51,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:31:51,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:31:51,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:31:51,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:31:51,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:31:51,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:31:51,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:31:51,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:31:51,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:31:51,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:31:51,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:31:51,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:31:51,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:31:51,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:31:51,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:31:51,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:31:51,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:31:51,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:31:51,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:31:51,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:31:51,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:31:51,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:31:51,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:31:51,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:31:51,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:31:51,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:31:51,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:31:51,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:31:51,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:31:51,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:31:51,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:31:51,172 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 07:31:51,192 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:31:51,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:31:51,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:31:51,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:31:51,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:31:51,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:31:51,194 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:31:51,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:31:51,194 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:31:51,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:31:51,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:31:51,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:31:51,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:31:51,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:31:51,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:31:51,195 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:31:51,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:31:51,195 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:31:51,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:31:51,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:31:51,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:31:51,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:31:51,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:31:51,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:31:51,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:31:51,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:31:51,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:31:51,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:31:51,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:31:51,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:31:51,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:31:51,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:31:51,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:31:51,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:31:51,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:31:51,408 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:31:51,408 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:31:51,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i [2023-01-28 07:31:52,317 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:31:52,688 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:31:52,688 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i [2023-01-28 07:31:52,713 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/960d4a330/56c41e3e215f4d90929ead261e3cc304/FLAG1a8ebb635 [2023-01-28 07:31:52,920 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/960d4a330/56c41e3e215f4d90929ead261e3cc304 [2023-01-28 07:31:52,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:31:52,922 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:31:52,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:31:52,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:31:52,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:31:52,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:31:52" (1/1) ... [2023-01-28 07:31:52,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b840145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:31:52, skipping insertion in model container [2023-01-28 07:31:52,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:31:52" (1/1) ... [2023-01-28 07:31:52,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:31:53,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:31:53,269 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i[5469,5482] [2023-01-28 07:31:55,626 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-01-28 07:31:56,127 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-28 07:31:56,130 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-28 07:31:56,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:31:56,221 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:31:56,258 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i[5469,5482] [2023-01-28 07:31:56,341 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-01-28 07:31:56,370 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-28 07:31:56,371 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-28 07:31:56,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:31:56,768 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:31:56,768 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:31:56,769 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:31:56,769 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:31:56,769 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:31:56,769 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:31:56,769 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:31:56,773 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:31:56,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:31:56 WrapperNode [2023-01-28 07:31:56,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:31:56,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:31:56,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:31:56,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:31:56,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:31:56" (1/1) ... [2023-01-28 07:31:56,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:31:56" (1/1) ... [2023-01-28 07:31:56,958 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 56, statements flattened = 737 [2023-01-28 07:31:56,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:31:56,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:31:56,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:31:56,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:31:56,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:31:56" (1/1) ... [2023-01-28 07:31:56,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:31:56" (1/1) ... [2023-01-28 07:31:56,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:31:56" (1/1) ... [2023-01-28 07:31:56,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:31:56" (1/1) ... [2023-01-28 07:31:57,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:31:56" (1/1) ... [2023-01-28 07:31:57,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:31:56" (1/1) ... [2023-01-28 07:31:57,023 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:31:56" (1/1) ... [2023-01-28 07:31:57,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:31:56" (1/1) ... [2023-01-28 07:31:57,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:31:57,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:31:57,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:31:57,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:31:57,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:31:56" (1/1) ... [2023-01-28 07:31:57,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:31:57,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:31:57,065 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 07:31:57,082 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 07:31:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 07:31:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 07:31:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:31:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 07:31:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2023-01-28 07:31:57,093 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2023-01-28 07:31:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:31:57,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:31:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_open [2023-01-28 07:31:57,093 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_open [2023-01-28 07:31:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-01-28 07:31:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:31:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 07:31:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:31:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:31:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-01-28 07:31:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:31:57,095 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 07:31:57,501 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:31:57,502 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:31:58,120 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:31:58,128 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:31:58,128 INFO L302 CfgBuilder]: Removed 27 assume(true) statements. [2023-01-28 07:31:58,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:31:58 BoogieIcfgContainer [2023-01-28 07:31:58,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:31:58,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:31:58,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:31:58,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:31:58,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:31:52" (1/3) ... [2023-01-28 07:31:58,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef02e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:31:58, skipping insertion in model container [2023-01-28 07:31:58,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:31:56" (2/3) ... [2023-01-28 07:31:58,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef02e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:31:58, skipping insertion in model container [2023-01-28 07:31:58,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:31:58" (3/3) ... [2023-01-28 07:31:58,134 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i [2023-01-28 07:31:58,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:31:58,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-01-28 07:31:58,145 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:31:58,239 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 07:31:58,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 756 places, 805 transitions, 1626 flow [2023-01-28 07:31:58,415 INFO L130 PetriNetUnfolder]: 56/803 cut-off events. [2023-01-28 07:31:58,415 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 07:31:58,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 803 events. 56/803 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1170 event pairs, 0 based on Foata normal form. 0/743 useless extension candidates. Maximal degree in co-relation 646. Up to 9 conditions per place. [2023-01-28 07:31:58,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 756 places, 805 transitions, 1626 flow [2023-01-28 07:31:58,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 746 places, 795 transitions, 1599 flow [2023-01-28 07:31:58,431 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:31:58,436 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 746 places, 795 transitions, 1599 flow [2023-01-28 07:31:58,438 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 746 places, 795 transitions, 1599 flow [2023-01-28 07:31:58,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 746 places, 795 transitions, 1599 flow [2023-01-28 07:31:58,571 INFO L130 PetriNetUnfolder]: 56/795 cut-off events. [2023-01-28 07:31:58,572 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 07:31:58,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 795 events. 56/795 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1105 event pairs, 0 based on Foata normal form. 0/735 useless extension candidates. Maximal degree in co-relation 646. Up to 9 conditions per place. [2023-01-28 07:31:58,581 INFO L119 LiptonReduction]: Number of co-enabled transitions 17334 [2023-01-28 07:33:23,519 WARN L222 SmtUtils]: Spent 13.78s on a formula simplification. DAG size of input: 292 DAG size of output: 289 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 07:33:30,001 WARN L222 SmtUtils]: Spent 6.48s 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 07:33:43,924 WARN L222 SmtUtils]: Spent 13.92s on a formula simplification. DAG size of input: 298 DAG size of output: 293 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 07:33:50,428 WARN L222 SmtUtils]: Spent 6.50s 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 07:36:08,084 WARN L222 SmtUtils]: Spent 2.20m on a formula simplification. DAG size of input: 669 DAG size of output: 667 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 07:37:09,916 WARN L222 SmtUtils]: Spent 1.03m 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 07:38:12,331 WARN L222 SmtUtils]: Spent 1.04m on a formula simplification. DAG size of input: 672 DAG size of output: 670 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 07:38:37,674 WARN L222 SmtUtils]: Spent 25.33s 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 07:38:44,438 INFO L134 LiptonReduction]: Checked pairs total: 16655 [2023-01-28 07:38:44,438 INFO L136 LiptonReduction]: Total number of compositions: 878 [2023-01-28 07:38:44,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:38:44,450 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;@714a34db, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:38:44,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-01-28 07:38:44,456 INFO L130 PetriNetUnfolder]: 4/9 cut-off events. [2023-01-28 07:38:44,456 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:38:44,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:38:44,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-01-28 07:38:44,457 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:38:44,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:38:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2965003, now seen corresponding path program 1 times [2023-01-28 07:38:44,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:38:44,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784121095] [2023-01-28 07:38:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:38:44,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:38:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:38:44,783 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 07:38:44,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:38:44,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784121095] [2023-01-28 07:38:44,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784121095] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:38:44,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:38:44,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:38:44,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835677604] [2023-01-28 07:38:44,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:38:44,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 07:38:44,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:38:44,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 07:38:44,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 07:38:44,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 765 out of 1683 [2023-01-28 07:38:44,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 59 transitions, 127 flow. Second operand has 2 states, 2 states have (on average 766.5) internal successors, (1533), 2 states have internal predecessors, (1533), 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 07:38:44,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:38:44,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 765 of 1683 [2023-01-28 07:38:44,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:38:45,329 INFO L130 PetriNetUnfolder]: 223/415 cut-off events. [2023-01-28 07:38:45,330 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-01-28 07:38:45,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 415 events. 223/415 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1376 event pairs, 213 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 704. Up to 416 conditions per place. [2023-01-28 07:38:45,332 INFO L137 encePairwiseOnDemand]: 1668/1683 looper letters, 44 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2023-01-28 07:38:45,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 185 flow [2023-01-28 07:38:45,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 07:38:45,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 07:38:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1589 transitions. [2023-01-28 07:38:45,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720736779560309 [2023-01-28 07:38:45,347 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1589 transitions. [2023-01-28 07:38:45,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1589 transitions. [2023-01-28 07:38:45,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:38:45,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1589 transitions. [2023-01-28 07:38:45,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 794.5) internal successors, (1589), 2 states have internal predecessors, (1589), 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 07:38:45,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1683.0) internal successors, (5049), 3 states have internal predecessors, (5049), 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 07:38:45,366 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1683.0) internal successors, (5049), 3 states have internal predecessors, (5049), 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 07:38:45,367 INFO L175 Difference]: Start difference. First operand has 42 places, 59 transitions, 127 flow. Second operand 2 states and 1589 transitions. [2023-01-28 07:38:45,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 185 flow [2023-01-28 07:38:45,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:38:45,376 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 92 flow [2023-01-28 07:38:45,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=92, PETRI_PLACES=39, PETRI_TRANSITIONS=44} [2023-01-28 07:38:45,385 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-01-28 07:38:45,386 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 92 flow [2023-01-28 07:38:45,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 766.5) internal successors, (1533), 2 states have internal predecessors, (1533), 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 07:38:45,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:38:45,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 07:38:45,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:38:45,387 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:38:45,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:38:45,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1838204332, now seen corresponding path program 1 times [2023-01-28 07:38:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:38:45,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390284950] [2023-01-28 07:38:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:38:45,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:38:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:38:45,990 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 07:38:45,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:38:45,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390284950] [2023-01-28 07:38:45,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390284950] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:38:45,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:38:45,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:38:45,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809820793] [2023-01-28 07:38:45,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:38:45,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:38:45,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:38:45,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:38:45,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:38:45,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 733 out of 1683 [2023-01-28 07:38:45,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 735.0) internal successors, (2205), 3 states have internal predecessors, (2205), 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 07:38:45,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:38:45,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 733 of 1683 [2023-01-28 07:38:45,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:38:46,515 INFO L130 PetriNetUnfolder]: 324/614 cut-off events. [2023-01-28 07:38:46,515 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-01-28 07:38:46,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 614 events. 324/614 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2643 event pairs, 129 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 1247. Up to 369 conditions per place. [2023-01-28 07:38:46,518 INFO L137 encePairwiseOnDemand]: 1678/1683 looper letters, 57 selfloop transitions, 4 changer transitions 1/62 dead transitions. [2023-01-28 07:38:46,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 255 flow [2023-01-28 07:38:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:38:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:38:46,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2262 transitions. [2023-01-28 07:38:46,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44800950683303625 [2023-01-28 07:38:46,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2262 transitions. [2023-01-28 07:38:46,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2262 transitions. [2023-01-28 07:38:46,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:38:46,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2262 transitions. [2023-01-28 07:38:46,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 754.0) internal successors, (2262), 3 states have internal predecessors, (2262), 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 07:38:46,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1683.0) internal successors, (6732), 4 states have internal predecessors, (6732), 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 07:38:46,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1683.0) internal successors, (6732), 4 states have internal predecessors, (6732), 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 07:38:46,537 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 92 flow. Second operand 3 states and 2262 transitions. [2023-01-28 07:38:46,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 255 flow [2023-01-28 07:38:46,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 255 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:38:46,539 INFO L231 Difference]: Finished difference. Result has 43 places, 47 transitions, 122 flow [2023-01-28 07:38:46,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=47} [2023-01-28 07:38:46,539 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-01-28 07:38:46,539 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 122 flow [2023-01-28 07:38:46,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 735.0) internal successors, (2205), 3 states have internal predecessors, (2205), 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 07:38:46,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:38:46,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:38:46,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:38:46,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:38:46,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:38:46,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1149757591, now seen corresponding path program 1 times [2023-01-28 07:38:46,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:38:46,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604020792] [2023-01-28 07:38:46,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:38:46,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:38:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:38:47,197 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 07:38:47,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:38:47,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604020792] [2023-01-28 07:38:47,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604020792] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:38:47,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:38:47,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 07:38:47,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531227734] [2023-01-28 07:38:47,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:38:47,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 07:38:47,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:38:47,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 07:38:47,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 07:38:47,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 699 out of 1683 [2023-01-28 07:38:47,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 700.0) internal successors, (4900), 7 states have internal predecessors, (4900), 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 07:38:47,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:38:47,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 699 of 1683 [2023-01-28 07:38:47,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:38:48,244 INFO L130 PetriNetUnfolder]: 296/567 cut-off events. [2023-01-28 07:38:48,245 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2023-01-28 07:38:48,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1326 conditions, 567 events. 296/567 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2472 event pairs, 74 based on Foata normal form. 19/534 useless extension candidates. Maximal degree in co-relation 1321. Up to 380 conditions per place. [2023-01-28 07:38:48,247 INFO L137 encePairwiseOnDemand]: 1670/1683 looper letters, 63 selfloop transitions, 13 changer transitions 2/78 dead transitions. [2023-01-28 07:38:48,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 78 transitions, 355 flow [2023-01-28 07:38:48,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:38:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:38:48,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4271 transitions. [2023-01-28 07:38:48,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42295504060209943 [2023-01-28 07:38:48,255 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4271 transitions. [2023-01-28 07:38:48,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4271 transitions. [2023-01-28 07:38:48,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:38:48,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4271 transitions. [2023-01-28 07:38:48,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 711.8333333333334) internal successors, (4271), 6 states have internal predecessors, (4271), 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 07:38:48,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 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 07:38:48,277 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 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 07:38:48,277 INFO L175 Difference]: Start difference. First operand has 43 places, 47 transitions, 122 flow. Second operand 6 states and 4271 transitions. [2023-01-28 07:38:48,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 78 transitions, 355 flow [2023-01-28 07:38:48,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 78 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:38:48,281 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 163 flow [2023-01-28 07:38:48,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2023-01-28 07:38:48,282 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-01-28 07:38:48,282 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 163 flow [2023-01-28 07:38:48,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 700.0) internal successors, (4900), 7 states have internal predecessors, (4900), 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 07:38:48,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:38:48,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:38:48,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:38:48,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:38:48,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:38:48,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1154154743, now seen corresponding path program 1 times [2023-01-28 07:38:48,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:38:48,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282823684] [2023-01-28 07:38:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:38:48,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:38:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:38:48,785 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 07:38:48,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:38:48,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282823684] [2023-01-28 07:38:48,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282823684] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:38:48,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:38:48,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:38:48,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859383478] [2023-01-28 07:38:48,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:38:48,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:38:48,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:38:48,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:38:48,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:38:48,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 743 out of 1683 [2023-01-28 07:38:48,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 745.3333333333334) internal successors, (2236), 3 states have internal predecessors, (2236), 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 07:38:48,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:38:48,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 743 of 1683 [2023-01-28 07:38:48,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:38:49,105 INFO L130 PetriNetUnfolder]: 296/568 cut-off events. [2023-01-28 07:38:49,105 INFO L131 PetriNetUnfolder]: For 393/393 co-relation queries the response was YES. [2023-01-28 07:38:49,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1427 conditions, 568 events. 296/568 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2256 event pairs, 253 based on Foata normal form. 1/519 useless extension candidates. Maximal degree in co-relation 1420. Up to 568 conditions per place. [2023-01-28 07:38:49,107 INFO L137 encePairwiseOnDemand]: 1679/1683 looper letters, 48 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-01-28 07:38:49,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 265 flow [2023-01-28 07:38:49,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:38:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:38:49,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2276 transitions. [2023-01-28 07:38:49,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507823331352743 [2023-01-28 07:38:49,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2276 transitions. [2023-01-28 07:38:49,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2276 transitions. [2023-01-28 07:38:49,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:38:49,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2276 transitions. [2023-01-28 07:38:49,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 758.6666666666666) internal successors, (2276), 3 states have internal predecessors, (2276), 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 07:38:49,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1683.0) internal successors, (6732), 4 states have internal predecessors, (6732), 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 07:38:49,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1683.0) internal successors, (6732), 4 states have internal predecessors, (6732), 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 07:38:49,130 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 163 flow. Second operand 3 states and 2276 transitions. [2023-01-28 07:38:49,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 265 flow [2023-01-28 07:38:49,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:38:49,133 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 160 flow [2023-01-28 07:38:49,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2023-01-28 07:38:49,134 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-01-28 07:38:49,134 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 160 flow [2023-01-28 07:38:49,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 745.3333333333334) internal successors, (2236), 3 states have internal predecessors, (2236), 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 07:38:49,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:38:49,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:38:49,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:38:49,135 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:38:49,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:38:49,135 INFO L85 PathProgramCache]: Analyzing trace with hash 849000484, now seen corresponding path program 1 times [2023-01-28 07:38:49,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:38:49,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801637912] [2023-01-28 07:38:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:38:49,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:38:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:38:49,677 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 07:38:49,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:38:49,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801637912] [2023-01-28 07:38:49,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801637912] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:38:49,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316890276] [2023-01-28 07:38:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:38:49,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:38:49,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:38:49,683 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 07:38:49,684 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 07:38:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:38:50,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 07:38:50,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:38:50,120 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 07:38:50,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 07:38:50,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316890276] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:38:50,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 07:38:50,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-01-28 07:38:50,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796368450] [2023-01-28 07:38:50,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:38:50,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:38:50,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:38:50,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:38:50,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:38:50,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 712 out of 1683 [2023-01-28 07:38:50,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 714.6666666666666) internal successors, (2144), 3 states have internal predecessors, (2144), 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 07:38:50,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:38:50,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 712 of 1683 [2023-01-28 07:38:50,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:38:51,067 INFO L130 PetriNetUnfolder]: 344/660 cut-off events. [2023-01-28 07:38:51,068 INFO L131 PetriNetUnfolder]: For 359/359 co-relation queries the response was YES. [2023-01-28 07:38:51,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1636 conditions, 660 events. 344/660 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2931 event pairs, 107 based on Foata normal form. 0/620 useless extension candidates. Maximal degree in co-relation 1628. Up to 367 conditions per place. [2023-01-28 07:38:51,070 INFO L137 encePairwiseOnDemand]: 1679/1683 looper letters, 60 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2023-01-28 07:38:51,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 341 flow [2023-01-28 07:38:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:38:51,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:38:51,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2195 transitions. [2023-01-28 07:38:51,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4347395523866112 [2023-01-28 07:38:51,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2195 transitions. [2023-01-28 07:38:51,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2195 transitions. [2023-01-28 07:38:51,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:38:51,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2195 transitions. [2023-01-28 07:38:51,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 731.6666666666666) internal successors, (2195), 3 states have internal predecessors, (2195), 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 07:38:51,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1683.0) internal successors, (6732), 4 states have internal predecessors, (6732), 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 07:38:51,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1683.0) internal successors, (6732), 4 states have internal predecessors, (6732), 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 07:38:51,082 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 160 flow. Second operand 3 states and 2195 transitions. [2023-01-28 07:38:51,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 341 flow [2023-01-28 07:38:51,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 337 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 07:38:51,085 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 193 flow [2023-01-28 07:38:51,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-01-28 07:38:51,085 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-01-28 07:38:51,085 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 193 flow [2023-01-28 07:38:51,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 714.6666666666666) internal successors, (2144), 3 states have internal predecessors, (2144), 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 07:38:51,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:38:51,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:38:51,095 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 07:38:51,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:38:51,293 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:38:51,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:38:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash -185362531, now seen corresponding path program 1 times [2023-01-28 07:38:51,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:38:51,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411604686] [2023-01-28 07:38:51,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:38:51,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:38:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:38:51,762 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 07:38:51,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:38:51,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411604686] [2023-01-28 07:38:51,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411604686] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:38:51,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342510654] [2023-01-28 07:38:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:38:51,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:38:51,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:38:51,764 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 07:38:51,766 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 07:38:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:38:52,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-28 07:38:52,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:38:52,305 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 07:38:52,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2023-01-28 07:38:52,372 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 07:38:52,383 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 07:38:52,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 07:38:52,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342510654] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:38:52,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 07:38:52,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-01-28 07:38:52,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503446535] [2023-01-28 07:38:52,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:38:52,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:38:52,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:38:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:38:52,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 07:38:52,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 705 out of 1683 [2023-01-28 07:38:52,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 706.6666666666666) internal successors, (4240), 6 states have internal predecessors, (4240), 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 07:38:52,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:38:52,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 705 of 1683 [2023-01-28 07:38:52,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:38:52,953 INFO L130 PetriNetUnfolder]: 335/643 cut-off events. [2023-01-28 07:38:52,953 INFO L131 PetriNetUnfolder]: For 530/530 co-relation queries the response was YES. [2023-01-28 07:38:52,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 643 events. 335/643 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2807 event pairs, 70 based on Foata normal form. 8/619 useless extension candidates. Maximal degree in co-relation 1696. Up to 398 conditions per place. [2023-01-28 07:38:52,956 INFO L137 encePairwiseOnDemand]: 1678/1683 looper letters, 61 selfloop transitions, 10 changer transitions 1/72 dead transitions. [2023-01-28 07:38:52,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 72 transitions, 398 flow [2023-01-28 07:38:52,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:38:52,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:38:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4295 transitions. [2023-01-28 07:38:52,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42533174886116065 [2023-01-28 07:38:52,962 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4295 transitions. [2023-01-28 07:38:52,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4295 transitions. [2023-01-28 07:38:52,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:38:52,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4295 transitions. [2023-01-28 07:38:52,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 715.8333333333334) internal successors, (4295), 6 states have internal predecessors, (4295), 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 07:38:52,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 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 07:38:52,979 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 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 07:38:52,979 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 193 flow. Second operand 6 states and 4295 transitions. [2023-01-28 07:38:52,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 72 transitions, 398 flow [2023-01-28 07:38:52,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 72 transitions, 391 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:38:52,982 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 220 flow [2023-01-28 07:38:52,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2023-01-28 07:38:52,984 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-01-28 07:38:52,985 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 220 flow [2023-01-28 07:38:52,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 706.6666666666666) internal successors, (4240), 6 states have internal predecessors, (4240), 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 07:38:52,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:38:52,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:38:52,994 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 07:38:53,194 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,SelfDestructingSolverStorable5 [2023-01-28 07:38:53,195 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:38:53,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:38:53,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1114404398, now seen corresponding path program 1 times [2023-01-28 07:38:53,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:38:53,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341584255] [2023-01-28 07:38:53,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:38:53,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:38:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:38:53,868 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 07:38:53,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:38:53,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341584255] [2023-01-28 07:38:53,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341584255] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:38:53,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175637091] [2023-01-28 07:38:53,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:38:53,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:38:53,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:38:53,870 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 07:38:53,875 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 07:38:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:38:54,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 07:38:54,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:38:54,849 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 07:38:54,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 07:38:55,061 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 07:38:55,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175637091] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 07:38:55,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 07:38:55,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-01-28 07:38:55,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092206013] [2023-01-28 07:38:55,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 07:38:55,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 07:38:55,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:38:55,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 07:38:55,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-01-28 07:38:55,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 743 out of 1683 [2023-01-28 07:38:55,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 220 flow. Second operand has 8 states, 8 states have (on average 745.625) internal successors, (5965), 8 states have internal predecessors, (5965), 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 07:38:55,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:38:55,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 743 of 1683 [2023-01-28 07:38:55,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:38:55,632 INFO L130 PetriNetUnfolder]: 335/648 cut-off events. [2023-01-28 07:38:55,632 INFO L131 PetriNetUnfolder]: For 716/716 co-relation queries the response was YES. [2023-01-28 07:38:55,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1757 conditions, 648 events. 335/648 cut-off events. For 716/716 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2739 event pairs, 270 based on Foata normal form. 0/616 useless extension candidates. Maximal degree in co-relation 1748. Up to 643 conditions per place. [2023-01-28 07:38:55,634 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 51 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2023-01-28 07:38:55,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 354 flow [2023-01-28 07:38:55,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:38:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:38:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4517 transitions. [2023-01-28 07:38:55,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473163002574767 [2023-01-28 07:38:55,641 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4517 transitions. [2023-01-28 07:38:55,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4517 transitions. [2023-01-28 07:38:55,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:38:55,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4517 transitions. [2023-01-28 07:38:55,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 752.8333333333334) internal successors, (4517), 6 states have internal predecessors, (4517), 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 07:38:55,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 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 07:38:55,657 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 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 07:38:55,657 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 220 flow. Second operand 6 states and 4517 transitions. [2023-01-28 07:38:55,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 354 flow [2023-01-28 07:38:55,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 349 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 07:38:55,659 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 281 flow [2023-01-28 07:38:55,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2023-01-28 07:38:55,660 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-01-28 07:38:55,660 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 281 flow [2023-01-28 07:38:55,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 745.625) internal successors, (5965), 8 states have internal predecessors, (5965), 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 07:38:55,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:38:55,661 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:38:55,674 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 07:38:55,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:38:55,875 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:38:55,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:38:55,875 INFO L85 PathProgramCache]: Analyzing trace with hash 781361293, now seen corresponding path program 2 times [2023-01-28 07:38:55,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:38:55,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463915834] [2023-01-28 07:38:55,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:38:55,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:38:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:38:56,785 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 07:38:56,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:38:56,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463915834] [2023-01-28 07:38:56,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463915834] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:38:56,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389466444] [2023-01-28 07:38:56,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 07:38:56,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:38:56,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:38:56,787 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 07:38:56,789 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 07:38:57,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 07:38:57,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 07:38:57,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-28 07:38:57,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:38:58,031 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 07:38:58,059 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 07:38:58,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 07:38:58,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389466444] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:38:58,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 07:38:58,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-01-28 07:38:58,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867054657] [2023-01-28 07:38:58,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:38:58,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:38:58,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:38:58,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:38:58,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-01-28 07:38:58,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 709 out of 1683 [2023-01-28 07:38:58,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 712.75) internal successors, (2851), 4 states have internal predecessors, (2851), 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 07:38:58,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:38:58,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 709 of 1683 [2023-01-28 07:38:58,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:38:58,870 INFO L130 PetriNetUnfolder]: 323/634 cut-off events. [2023-01-28 07:38:58,871 INFO L131 PetriNetUnfolder]: For 656/656 co-relation queries the response was YES. [2023-01-28 07:38:58,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 634 events. 323/634 cut-off events. For 656/656 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2685 event pairs, 163 based on Foata normal form. 0/619 useless extension candidates. Maximal degree in co-relation 1719. Up to 374 conditions per place. [2023-01-28 07:38:58,873 INFO L137 encePairwiseOnDemand]: 1677/1683 looper letters, 54 selfloop transitions, 9 changer transitions 11/74 dead transitions. [2023-01-28 07:38:58,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 491 flow [2023-01-28 07:38:58,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:38:58,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:38:58,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2895 transitions. [2023-01-28 07:38:58,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43003565062388593 [2023-01-28 07:38:58,877 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2895 transitions. [2023-01-28 07:38:58,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2895 transitions. [2023-01-28 07:38:58,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:38:58,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2895 transitions. [2023-01-28 07:38:58,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 723.75) internal successors, (2895), 4 states have internal predecessors, (2895), 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 07:38:58,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1683.0) internal successors, (8415), 5 states have internal predecessors, (8415), 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 07:38:58,888 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1683.0) internal successors, (8415), 5 states have internal predecessors, (8415), 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 07:38:58,888 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 281 flow. Second operand 4 states and 2895 transitions. [2023-01-28 07:38:58,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 491 flow [2023-01-28 07:38:58,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 74 transitions, 481 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 07:38:58,891 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 295 flow [2023-01-28 07:38:58,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-01-28 07:38:58,892 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-01-28 07:38:58,892 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 295 flow [2023-01-28 07:38:58,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 712.75) internal successors, (2851), 4 states have internal predecessors, (2851), 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 07:38:58,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:38:58,893 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:38:58,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 07:38:59,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:38:59,103 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:38:59,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:38:59,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1766874052, now seen corresponding path program 1 times [2023-01-28 07:38:59,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:38:59,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162554362] [2023-01-28 07:38:59,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:38:59,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:38:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:38:59,766 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 07:38:59,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:38:59,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162554362] [2023-01-28 07:38:59,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162554362] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:38:59,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852084020] [2023-01-28 07:38:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:38:59,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:38:59,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:38:59,768 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 07:38:59,770 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 07:39:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:39:00,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 57 conjunts are in the unsatisfiable core [2023-01-28 07:39:00,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:39:00,373 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 07:39:00,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2023-01-28 07:39:00,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-01-28 07:39:00,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-01-28 07:39:00,830 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 07:39:00,836 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 07:39:00,851 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 07:39:00,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 07:39:00,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852084020] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:39:00,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 07:39:00,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-01-28 07:39:00,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173457369] [2023-01-28 07:39:00,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:39:00,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:39:00,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:39:00,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:39:00,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-01-28 07:39:00,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 722 out of 1683 [2023-01-28 07:39:00,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 724.8333333333334) internal successors, (4349), 6 states have internal predecessors, (4349), 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 07:39:00,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:39:00,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 722 of 1683 [2023-01-28 07:39:00,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:39:01,796 INFO L130 PetriNetUnfolder]: 302/617 cut-off events. [2023-01-28 07:39:01,797 INFO L131 PetriNetUnfolder]: For 804/804 co-relation queries the response was YES. [2023-01-28 07:39:01,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 617 events. 302/617 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2783 event pairs, 114 based on Foata normal form. 4/614 useless extension candidates. Maximal degree in co-relation 1766. Up to 349 conditions per place. [2023-01-28 07:39:01,799 INFO L137 encePairwiseOnDemand]: 1678/1683 looper letters, 59 selfloop transitions, 6 changer transitions 16/81 dead transitions. [2023-01-28 07:39:01,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 526 flow [2023-01-28 07:39:01,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:39:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:39:01,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3681 transitions. [2023-01-28 07:39:01,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4374331550802139 [2023-01-28 07:39:01,805 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3681 transitions. [2023-01-28 07:39:01,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3681 transitions. [2023-01-28 07:39:01,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:39:01,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3681 transitions. [2023-01-28 07:39:01,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 736.2) internal successors, (3681), 5 states have internal predecessors, (3681), 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 07:39:01,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1683.0) internal successors, (10098), 6 states have internal predecessors, (10098), 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 07:39:01,816 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1683.0) internal successors, (10098), 6 states have internal predecessors, (10098), 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 07:39:01,817 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 295 flow. Second operand 5 states and 3681 transitions. [2023-01-28 07:39:01,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 526 flow [2023-01-28 07:39:01,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 81 transitions, 484 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-01-28 07:39:01,821 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 250 flow [2023-01-28 07:39:01,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2023-01-28 07:39:01,822 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-01-28 07:39:01,822 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 250 flow [2023-01-28 07:39:01,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 724.8333333333334) internal successors, (4349), 6 states have internal predecessors, (4349), 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 07:39:01,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:39:01,823 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:39:01,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 07:39:02,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:39:02,032 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:39:02,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:39:02,032 INFO L85 PathProgramCache]: Analyzing trace with hash -730774836, now seen corresponding path program 1 times [2023-01-28 07:39:02,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:39:02,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183031122] [2023-01-28 07:39:02,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:39:02,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:39:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:39:02,979 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 07:39:02,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:39:02,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183031122] [2023-01-28 07:39:02,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183031122] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:39:02,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827993585] [2023-01-28 07:39:02,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:39:02,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:39:02,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:39:02,981 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 07:39:02,983 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 07:39:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:39:04,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 07:39:04,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:39:04,488 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 07:39:04,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 07:39:04,674 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 07:39:04,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827993585] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 07:39:04,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 07:39:04,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-28 07:39:04,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352393481] [2023-01-28 07:39:04,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 07:39:04,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 07:39:04,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:39:04,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 07:39:04,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-01-28 07:39:04,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 1683 [2023-01-28 07:39:04,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 250 flow. Second operand has 14 states, 14 states have (on average 749.0714285714286) internal successors, (10487), 14 states have internal predecessors, (10487), 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 07:39:04,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:39:04,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 1683 [2023-01-28 07:39:04,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:39:05,847 INFO L130 PetriNetUnfolder]: 211/463 cut-off events. [2023-01-28 07:39:05,847 INFO L131 PetriNetUnfolder]: For 404/404 co-relation queries the response was YES. [2023-01-28 07:39:05,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1232 conditions, 463 events. 211/463 cut-off events. For 404/404 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1890 event pairs, 185 based on Foata normal form. 9/465 useless extension candidates. Maximal degree in co-relation 1218. Up to 449 conditions per place. [2023-01-28 07:39:05,849 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 47 selfloop transitions, 17 changer transitions 0/64 dead transitions. [2023-01-28 07:39:05,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 426 flow [2023-01-28 07:39:05,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 07:39:05,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 07:39:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 9040 transitions. [2023-01-28 07:39:05,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476133887898594 [2023-01-28 07:39:05,859 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 9040 transitions. [2023-01-28 07:39:05,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 9040 transitions. [2023-01-28 07:39:05,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:39:05,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 9040 transitions. [2023-01-28 07:39:05,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 753.3333333333334) internal successors, (9040), 12 states have internal predecessors, (9040), 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 07:39:05,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1683.0) internal successors, (21879), 13 states have internal predecessors, (21879), 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 07:39:05,889 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1683.0) internal successors, (21879), 13 states have internal predecessors, (21879), 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 07:39:05,889 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 250 flow. Second operand 12 states and 9040 transitions. [2023-01-28 07:39:05,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 426 flow [2023-01-28 07:39:05,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 404 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-01-28 07:39:05,891 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 372 flow [2023-01-28 07:39:05,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=372, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2023-01-28 07:39:05,892 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2023-01-28 07:39:05,892 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 372 flow [2023-01-28 07:39:05,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 749.0714285714286) internal successors, (10487), 14 states have internal predecessors, (10487), 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 07:39:05,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:39:05,894 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:39:05,910 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 07:39:06,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:39:06,107 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:39:06,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:39:06,107 INFO L85 PathProgramCache]: Analyzing trace with hash 638604460, now seen corresponding path program 2 times [2023-01-28 07:39:06,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:39:06,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772850652] [2023-01-28 07:39:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:39:06,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:39:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:39:07,259 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 07:39:07,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:39:07,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772850652] [2023-01-28 07:39:07,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772850652] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:39:07,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779759739] [2023-01-28 07:39:07,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 07:39:07,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:39:07,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:39:07,260 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 07:39:07,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 07:39:08,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 07:39:08,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 07:39:08,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 55 conjunts are in the unsatisfiable core [2023-01-28 07:39:08,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:39:08,348 INFO L321 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2023-01-28 07:39:08,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 62 [2023-01-28 07:39:08,773 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 07:39:08,875 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 07:39:08,908 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 07:39:08,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 07:39:08,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779759739] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:39:08,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 07:39:08,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2023-01-28 07:39:08,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900018075] [2023-01-28 07:39:08,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:39:08,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 07:39:08,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:39:08,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 07:39:08,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-01-28 07:39:08,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 702 out of 1683 [2023-01-28 07:39:08,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 704.4285714285714) internal successors, (4931), 7 states have internal predecessors, (4931), 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 07:39:08,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:39:08,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 702 of 1683 [2023-01-28 07:39:08,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:39:09,675 INFO L130 PetriNetUnfolder]: 225/497 cut-off events. [2023-01-28 07:39:09,675 INFO L131 PetriNetUnfolder]: For 276/276 co-relation queries the response was YES. [2023-01-28 07:39:09,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 497 events. 225/497 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2083 event pairs, 110 based on Foata normal form. 8/498 useless extension candidates. Maximal degree in co-relation 1289. Up to 282 conditions per place. [2023-01-28 07:39:09,677 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 59 selfloop transitions, 7 changer transitions 17/83 dead transitions. [2023-01-28 07:39:09,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 593 flow [2023-01-28 07:39:09,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:39:09,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:39:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4276 transitions. [2023-01-28 07:39:09,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4234501881560705 [2023-01-28 07:39:09,682 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4276 transitions. [2023-01-28 07:39:09,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4276 transitions. [2023-01-28 07:39:09,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:39:09,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4276 transitions. [2023-01-28 07:39:09,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 712.6666666666666) internal successors, (4276), 6 states have internal predecessors, (4276), 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 07:39:09,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 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 07:39:09,692 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 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 07:39:09,692 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 372 flow. Second operand 6 states and 4276 transitions. [2023-01-28 07:39:09,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 593 flow [2023-01-28 07:39:09,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 553 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-01-28 07:39:09,695 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 346 flow [2023-01-28 07:39:09,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=346, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2023-01-28 07:39:09,695 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2023-01-28 07:39:09,695 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 346 flow [2023-01-28 07:39:09,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 704.4285714285714) internal successors, (4931), 7 states have internal predecessors, (4931), 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 07:39:09,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:39:09,696 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:39:09,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 07:39:09,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:39:09,906 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:39:09,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:39:09,907 INFO L85 PathProgramCache]: Analyzing trace with hash 81689220, now seen corresponding path program 3 times [2023-01-28 07:39:09,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:39:09,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761944665] [2023-01-28 07:39:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:39:09,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:39:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:39:10,858 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 07:39:10,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:39:10,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761944665] [2023-01-28 07:39:10,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761944665] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:39:10,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281681687] [2023-01-28 07:39:10,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 07:39:10,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:39:10,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:39:10,859 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 07:39:10,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 07:39:11,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 07:39:11,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 07:39:11,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 48 conjunts are in the unsatisfiable core [2023-01-28 07:39:11,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:39:11,701 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 07:39:11,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2023-01-28 07:39:12,207 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 07:39:12,261 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 07:39:12,287 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 07:39:12,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 07:39:12,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281681687] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:39:12,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 07:39:12,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2023-01-28 07:39:12,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183270796] [2023-01-28 07:39:12,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:39:12,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 07:39:12,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:39:12,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 07:39:12,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-01-28 07:39:12,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 702 out of 1683 [2023-01-28 07:39:12,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 704.4285714285714) internal successors, (4931), 7 states have internal predecessors, (4931), 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 07:39:12,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:39:12,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 702 of 1683 [2023-01-28 07:39:12,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:39:13,745 INFO L130 PetriNetUnfolder]: 221/493 cut-off events. [2023-01-28 07:39:13,746 INFO L131 PetriNetUnfolder]: For 397/397 co-relation queries the response was YES. [2023-01-28 07:39:13,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 493 events. 221/493 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2085 event pairs, 91 based on Foata normal form. 8/494 useless extension candidates. Maximal degree in co-relation 1364. Up to 265 conditions per place. [2023-01-28 07:39:13,747 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 66 selfloop transitions, 7 changer transitions 14/87 dead transitions. [2023-01-28 07:39:13,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 616 flow [2023-01-28 07:39:13,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:39:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:39:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4281 transitions. [2023-01-28 07:39:13,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4239453357100416 [2023-01-28 07:39:13,752 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4281 transitions. [2023-01-28 07:39:13,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4281 transitions. [2023-01-28 07:39:13,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:39:13,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4281 transitions. [2023-01-28 07:39:13,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 713.5) internal successors, (4281), 6 states have internal predecessors, (4281), 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 07:39:13,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 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 07:39:13,761 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 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 07:39:13,761 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 346 flow. Second operand 6 states and 4281 transitions. [2023-01-28 07:39:13,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 87 transitions, 616 flow [2023-01-28 07:39:13,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 87 transitions, 578 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-01-28 07:39:13,764 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 367 flow [2023-01-28 07:39:13,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=367, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2023-01-28 07:39:13,765 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-01-28 07:39:13,765 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 367 flow [2023-01-28 07:39:13,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 704.4285714285714) internal successors, (4931), 7 states have internal predecessors, (4931), 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 07:39:13,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:39:13,765 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:39:13,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 07:39:13,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 07:39:13,975 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:39:13,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:39:13,976 INFO L85 PathProgramCache]: Analyzing trace with hash 901640040, now seen corresponding path program 2 times [2023-01-28 07:39:13,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:39:13,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877775335] [2023-01-28 07:39:13,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:39:13,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:39:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:39:14,825 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 07:39:14,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:39:14,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877775335] [2023-01-28 07:39:14,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877775335] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:39:14,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152164377] [2023-01-28 07:39:14,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 07:39:14,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:39:14,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:39:14,826 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 07:39:14,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 07:39:15,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 07:39:15,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 07:39:15,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 58 conjunts are in the unsatisfiable core [2023-01-28 07:39:15,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:39:15,508 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 07:39:15,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2023-01-28 07:39:15,921 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 07:39:15,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 53 [2023-01-28 07:39:15,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 07:39:15,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 07:39:16,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-01-28 07:39:16,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-01-28 07:39:16,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 07:39:16,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 07:39:16,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 07:39:16,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 07:39:16,239 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 07:39:16,244 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 07:39:16,267 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 07:39:16,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 07:39:16,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152164377] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:39:16,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 07:39:16,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 18 [2023-01-28 07:39:16,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813862057] [2023-01-28 07:39:16,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:39:16,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 07:39:16,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:39:16,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 07:39:16,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-01-28 07:39:16,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 691 out of 1683 [2023-01-28 07:39:16,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 367 flow. Second operand has 8 states, 8 states have (on average 693.125) internal successors, (5545), 8 states have internal predecessors, (5545), 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 07:39:16,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:39:16,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 691 of 1683 [2023-01-28 07:39:16,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:39:17,228 INFO L130 PetriNetUnfolder]: 189/427 cut-off events. [2023-01-28 07:39:17,229 INFO L131 PetriNetUnfolder]: For 423/423 co-relation queries the response was YES. [2023-01-28 07:39:17,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 427 events. 189/427 cut-off events. For 423/423 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1723 event pairs, 121 based on Foata normal form. 4/424 useless extension candidates. Maximal degree in co-relation 1256. Up to 316 conditions per place. [2023-01-28 07:39:17,230 INFO L137 encePairwiseOnDemand]: 1672/1683 looper letters, 48 selfloop transitions, 10 changer transitions 23/81 dead transitions. [2023-01-28 07:39:17,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 81 transitions, 578 flow [2023-01-28 07:39:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:39:17,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:39:17,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4210 transitions. [2023-01-28 07:39:17,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169142404436522 [2023-01-28 07:39:17,236 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4210 transitions. [2023-01-28 07:39:17,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4210 transitions. [2023-01-28 07:39:17,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:39:17,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4210 transitions. [2023-01-28 07:39:17,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 701.6666666666666) internal successors, (4210), 6 states have internal predecessors, (4210), 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 07:39:17,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 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 07:39:17,245 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 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 07:39:17,245 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 367 flow. Second operand 6 states and 4210 transitions. [2023-01-28 07:39:17,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 81 transitions, 578 flow [2023-01-28 07:39:17,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 571 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-28 07:39:17,248 INFO L231 Difference]: Finished difference. Result has 82 places, 56 transitions, 313 flow [2023-01-28 07:39:17,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=313, PETRI_PLACES=82, PETRI_TRANSITIONS=56} [2023-01-28 07:39:17,249 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2023-01-28 07:39:17,249 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 56 transitions, 313 flow [2023-01-28 07:39:17,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 693.125) internal successors, (5545), 8 states have internal predecessors, (5545), 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 07:39:17,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:39:17,250 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:39:17,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 07:39:17,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 07:39:17,457 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:39:17,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:39:17,457 INFO L85 PathProgramCache]: Analyzing trace with hash 651318490, now seen corresponding path program 4 times [2023-01-28 07:39:17,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:39:17,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690903632] [2023-01-28 07:39:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:39:17,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:39:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:39:18,388 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 07:39:18,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:39:18,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690903632] [2023-01-28 07:39:18,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690903632] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:39:18,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304219842] [2023-01-28 07:39:18,389 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 07:39:18,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:39:18,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:39:18,390 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 07:39:18,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 07:39:19,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 07:39:19,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 07:39:19,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 07:39:19,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:39:20,096 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 07:39:20,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 07:39:20,416 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 07:39:20,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304219842] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 07:39:20,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 07:39:20,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2023-01-28 07:39:20,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410672688] [2023-01-28 07:39:20,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 07:39:20,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-28 07:39:20,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:39:20,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-28 07:39:20,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=676, Unknown=0, NotChecked=0, Total=992 [2023-01-28 07:39:20,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 1683 [2023-01-28 07:39:20,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 56 transitions, 313 flow. Second operand has 32 states, 32 states have (on average 748.46875) internal successors, (23951), 32 states have internal predecessors, (23951), 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 07:39:20,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:39:20,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 1683 [2023-01-28 07:39:20,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:39:32,022 WARN L222 SmtUtils]: Spent 7.13s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 07:39:45,130 INFO L130 PetriNetUnfolder]: 45/140 cut-off events. [2023-01-28 07:39:45,130 INFO L131 PetriNetUnfolder]: For 1226/1226 co-relation queries the response was YES. [2023-01-28 07:39:45,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 140 events. 45/140 cut-off events. For 1226/1226 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 257 event pairs, 35 based on Foata normal form. 30/165 useless extension candidates. Maximal degree in co-relation 477. Up to 108 conditions per place. [2023-01-28 07:39:45,131 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 39 selfloop transitions, 35 changer transitions 0/74 dead transitions. [2023-01-28 07:39:45,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 74 transitions, 557 flow [2023-01-28 07:39:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 07:39:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 07:39:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 18038 transitions. [2023-01-28 07:39:45,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4465735789265201 [2023-01-28 07:39:45,149 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 18038 transitions. [2023-01-28 07:39:45,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 18038 transitions. [2023-01-28 07:39:45,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:39:45,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 18038 transitions. [2023-01-28 07:39:45,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 751.5833333333334) internal successors, (18038), 24 states have internal predecessors, (18038), 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 07:39:45,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 1683.0) internal successors, (42075), 25 states have internal predecessors, (42075), 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 07:39:45,192 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 1683.0) internal successors, (42075), 25 states have internal predecessors, (42075), 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 07:39:45,192 INFO L175 Difference]: Start difference. First operand has 82 places, 56 transitions, 313 flow. Second operand 24 states and 18038 transitions. [2023-01-28 07:39:45,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 74 transitions, 557 flow [2023-01-28 07:39:45,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 74 transitions, 515 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-01-28 07:39:45,195 INFO L231 Difference]: Finished difference. Result has 102 places, 74 transitions, 559 flow [2023-01-28 07:39:45,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=559, PETRI_PLACES=102, PETRI_TRANSITIONS=74} [2023-01-28 07:39:45,195 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2023-01-28 07:39:45,195 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 559 flow [2023-01-28 07:39:45,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 748.46875) internal successors, (23951), 32 states have internal predecessors, (23951), 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 07:39:45,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:39:45,197 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:39:45,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 07:39:45,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 07:39:45,409 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 07:39:45,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:39:45,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1506263194, now seen corresponding path program 5 times [2023-01-28 07:39:45,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:39:45,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993079978] [2023-01-28 07:39:45,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:39:45,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:39:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:39:46,714 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:39:46,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:39:46,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993079978] [2023-01-28 07:39:46,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993079978] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:39:46,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677033343] [2023-01-28 07:39:46,714 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 07:39:46,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:39:46,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:39:46,715 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 07:39:46,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process Received shutdown request... [2023-01-28 07:45:57,456 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 07:45:57,456 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 07:45:58,490 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 [2023-01-28 07:45:58,661 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forcibly destroying the process [2023-01-28 07:45:58,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 07:45:58,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-01-28 07:45:58,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2023-01-28 07:45:58,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961421705] [2023-01-28 07:45:58,679 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-01-28 07:45:58,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 07:45:58,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:45:58,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 07:45:58,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2023-01-28 07:45:58,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 137 [2023-01-28 07:45:58,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 1683 [2023-01-28 07:45:58,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 74 transitions, 559 flow. Second operand has 25 states, 25 states have (on average 748.52) internal successors, (18713), 25 states have internal predecessors, (18713), 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 07:45:58,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:45:58,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 1683 [2023-01-28 07:45:58,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:45:58,694 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2023-01-28 07:45:58,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 07:45:58,694 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-28 07:45:58,695 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-01-28 07:45:58,695 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-01-28 07:45:58,695 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 9 remaining) [2023-01-28 07:45:58,695 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-01-28 07:45:58,695 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-01-28 07:45:58,695 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-01-28 07:45:58,695 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-01-28 07:45:58,695 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-01-28 07:45:58,696 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1, 1, 1, 1] [2023-01-28 07:45:58,698 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:45:58,699 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:45:58,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:45:58 BasicIcfg [2023-01-28 07:45:58,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:45:58,700 INFO L158 Benchmark]: Toolchain (without parser) took 845777.98ms. Allocated memory was 591.4MB in the beginning and 1.1GB in the end (delta: 522.2MB). Free memory was 536.7MB in the beginning and 874.0MB in the end (delta: -337.3MB). Peak memory consumption was 186.2MB. Max. memory is 16.0GB. [2023-01-28 07:45:58,701 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 381.7MB. Free memory is still 327.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:45:58,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3850.93ms. Allocated memory was 591.4MB in the beginning and 769.7MB in the end (delta: 178.3MB). Free memory was 536.1MB in the beginning and 670.9MB in the end (delta: -134.7MB). Peak memory consumption was 151.5MB. Max. memory is 16.0GB. [2023-01-28 07:45:58,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 183.47ms. Allocated memory is still 769.7MB. Free memory was 670.9MB in the beginning and 659.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 07:45:58,701 INFO L158 Benchmark]: Boogie Preprocessor took 82.30ms. Allocated memory is still 769.7MB. Free memory was 659.4MB in the beginning and 653.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. [2023-01-28 07:45:58,701 INFO L158 Benchmark]: RCFGBuilder took 1088.10ms. Allocated memory is still 769.7MB. Free memory was 653.1MB in the beginning and 583.9MB in the end (delta: 69.2MB). Peak memory consumption was 69.2MB. Max. memory is 16.0GB. [2023-01-28 07:45:58,701 INFO L158 Benchmark]: TraceAbstraction took 840569.36ms. Allocated memory was 769.7MB in the beginning and 1.1GB in the end (delta: 343.9MB). Free memory was 582.8MB in the beginning and 874.0MB in the end (delta: -291.2MB). Peak memory consumption was 52.7MB. Max. memory is 16.0GB. [2023-01-28 07:45:58,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 381.7MB. Free memory is still 327.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 3850.93ms. Allocated memory was 591.4MB in the beginning and 769.7MB in the end (delta: 178.3MB). Free memory was 536.1MB in the beginning and 670.9MB in the end (delta: -134.7MB). Peak memory consumption was 151.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 183.47ms. Allocated memory is still 769.7MB. Free memory was 670.9MB in the beginning and 659.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Preprocessor took 82.30ms. Allocated memory is still 769.7MB. Free memory was 659.4MB in the beginning and 653.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. * RCFGBuilder took 1088.10ms. Allocated memory is still 769.7MB. Free memory was 653.1MB in the beginning and 583.9MB in the end (delta: 69.2MB). Peak memory consumption was 69.2MB. Max. memory is 16.0GB. * TraceAbstraction took 840569.36ms. Allocated memory was 769.7MB in the beginning and 1.1GB in the end (delta: 343.9MB). Free memory was 582.8MB in the beginning and 874.0MB in the end (delta: -291.2MB). Peak memory consumption was 52.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 406.0s, 746 PlacesBefore, 42 PlacesAfterwards, 795 TransitionsBefore, 59 TransitionsAfterwards, 17334 CoEnabledTransitionPairs, 10 FixpointIterations, 556 TrivialSequentialCompositions, 182 ConcurrentSequentialCompositions, 81 TrivialYvCompositions, 27 ConcurrentYvCompositions, 32 ChoiceCompositions, 878 TotalNumberOfCompositions, 16655 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13585, independent: 13383, independent conditional: 0, independent unconditional: 13383, dependent: 202, dependent conditional: 0, dependent unconditional: 202, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9246, independent: 9198, independent conditional: 0, independent unconditional: 9198, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13585, independent: 4185, independent conditional: 0, independent unconditional: 4185, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 9246, unknown conditional: 0, unknown unconditional: 9246] , Statistics on independence cache: Total cache size (in pairs): 87, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 7069]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 7068]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 930 locations, 9 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: 840.4s, OverallIterations: 15, TraceHistogramMax: 22, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 35.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 406.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 498 SdHoareTripleChecker+Valid, 13.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 498 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 12.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 160 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2945 IncrementalHoareTripleChecker+Invalid, 3106 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 160 mSolverCounterUnsat, 0 mSDtfsCounter, 2945 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 383 GetRequests, 195 SyntacticMatches, 5 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 22.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=559occurred in iteration=14, InterpolantAutomatonStates: 92, 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: 0.6s SsaConstructionTime, 6.8s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 451 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 484 ConstructedInterpolants, 3 QuantifiedInterpolants, 3589 SizeOfPredicates, 318 NumberOfNonLiveVariables, 11983 ConjunctsInSsa, 337 ConjunctsInUnsatCore, 28 InterpolantComputations, 11 PerfectInterpolantSequences, 187/825 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown