./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_set.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_set.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e42125d78d2e647b04483b10b743ce53945c41f6200d87cdd62381d378c13a7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:42:41,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:42:41,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:42:41,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:42:41,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:42:41,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:42:41,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:42:41,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:42:41,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:42:41,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:42:41,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:42:41,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:42:41,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:42:41,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:42:41,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:42:41,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:42:41,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:42:41,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:42:41,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:42:41,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:42:41,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:42:41,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:42:41,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:42:41,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:42:41,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:42:41,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:42:41,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:42:41,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:42:41,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:42:41,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:42:41,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:42:41,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:42:41,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:42:41,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:42:41,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:42:41,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:42:41,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:42:41,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:42:41,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:42:41,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:42:41,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:42:41,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:42:41,153 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:42:41,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:42:41,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:42:41,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:42:41,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:42:41,156 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:42:41,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:42:41,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:42:41,157 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:42:41,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:42:41,158 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:42:41,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:42:41,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:42:41,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:42:41,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:42:41,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:42:41,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:42:41,159 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:42:41,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:42:41,160 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:42:41,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:42:41,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:42:41,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:42:41,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:42:41,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:42:41,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:42:41,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:42:41,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:42:41,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:42:41,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:42:41,162 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:42:41,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:42:41,163 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:42:41,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:42:41,163 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:42:41,163 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e42125d78d2e647b04483b10b743ce53945c41f6200d87cdd62381d378c13a7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:42:41,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:42:41,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:42:41,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:42:41,508 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:42:41,509 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:42:41,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_set.i [2023-08-30 23:42:42,761 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:42:43,210 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:42:43,210 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_set.i [2023-08-30 23:42:43,243 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45227a872/6bce40a9b9454c378c6381a39813373d/FLAGc1e9d6b21 [2023-08-30 23:42:43,263 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45227a872/6bce40a9b9454c378c6381a39813373d [2023-08-30 23:42:43,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:42:43,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:42:43,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:42:43,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:42:43,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:42:43,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:42:43" (1/1) ... [2023-08-30 23:42:43,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e65f216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:42:43, skipping insertion in model container [2023-08-30 23:42:43,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:42:43" (1/1) ... [2023-08-30 23:42:43,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:42:43,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:42:43,719 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_set.i[5469,5482] [2023-08-30 23:42:46,106 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 23:42:46,635 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:42:46,635 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:42:46,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:42:46,709 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:42:46,723 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_set.i[5469,5482] [2023-08-30 23:42:46,921 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 23:42:46,973 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:42:46,973 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:42:46,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:42:47,586 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:42:47,587 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:42:47,587 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:42:47,587 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:42:47,587 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:42:47,587 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:42:47,587 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:42:47,593 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:42:47,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:42:47 WrapperNode [2023-08-30 23:42:47,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:42:47,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:42:47,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:42:47,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:42:47,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:42:47" (1/1) ... [2023-08-30 23:42:47,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:42:47" (1/1) ... [2023-08-30 23:42:47,808 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 58, statements flattened = 791 [2023-08-30 23:42:47,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:42:47,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:42:47,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:42:47,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:42:47,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:42:47" (1/1) ... [2023-08-30 23:42:47,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:42:47" (1/1) ... [2023-08-30 23:42:47,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:42:47" (1/1) ... [2023-08-30 23:42:47,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:42:47" (1/1) ... [2023-08-30 23:42:47,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:42:47" (1/1) ... [2023-08-30 23:42:47,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:42:47" (1/1) ... [2023-08-30 23:42:47,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:42:47" (1/1) ... [2023-08-30 23:42:47,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:42:47" (1/1) ... [2023-08-30 23:42:47,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:42:47,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:42:47,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:42:47,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:42:47,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:42:47" (1/1) ... [2023-08-30 23:42:47,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:42:47,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:42:47,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 23:42:47,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 23:42:47,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 23:42:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 23:42:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:42:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 23:42:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 23:42:47,992 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 23:42:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:42:47,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:42:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 23:42:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:42:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 23:42:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:42:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:42:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 23:42:47,994 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_set [2023-08-30 23:42:47,994 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_set [2023-08-30 23:42:47,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:42:47,997 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:42:48,408 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:42:48,422 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:42:49,200 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:42:49,226 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:42:49,227 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-08-30 23:42:49,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:42:49 BoogieIcfgContainer [2023-08-30 23:42:49,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:42:49,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:42:49,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:42:49,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:42:49,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:42:43" (1/3) ... [2023-08-30 23:42:49,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2719d7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:42:49, skipping insertion in model container [2023-08-30 23:42:49,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:42:47" (2/3) ... [2023-08-30 23:42:49,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2719d7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:42:49, skipping insertion in model container [2023-08-30 23:42:49,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:42:49" (3/3) ... [2023-08-30 23:42:49,239 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_set.i [2023-08-30 23:42:49,246 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:42:49,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:42:49,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 23:42:49,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:42:49,425 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 23:42:49,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 806 places, 864 transitions, 1744 flow [2023-08-30 23:42:49,722 INFO L130 PetriNetUnfolder]: 65/862 cut-off events. [2023-08-30 23:42:49,723 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 23:42:49,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 862 events. 65/862 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1552 event pairs, 0 based on Foata normal form. 0/793 useless extension candidates. Maximal degree in co-relation 705. Up to 9 conditions per place. [2023-08-30 23:42:49,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 806 places, 864 transitions, 1744 flow [2023-08-30 23:42:49,743 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 796 places, 854 transitions, 1717 flow [2023-08-30 23:42:49,747 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:42:49,754 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 796 places, 854 transitions, 1717 flow [2023-08-30 23:42:49,757 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 796 places, 854 transitions, 1717 flow [2023-08-30 23:42:49,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 796 places, 854 transitions, 1717 flow [2023-08-30 23:42:49,955 INFO L130 PetriNetUnfolder]: 65/854 cut-off events. [2023-08-30 23:42:49,955 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 23:42:49,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 854 events. 65/854 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1380 event pairs, 0 based on Foata normal form. 0/785 useless extension candidates. Maximal degree in co-relation 705. Up to 9 conditions per place. [2023-08-30 23:42:49,981 INFO L119 LiptonReduction]: Number of co-enabled transitions 35388 [2023-08-30 23:43:55,221 WARN L222 SmtUtils]: Spent 13.11s on a formula simplification that was a NOOP. DAG size: 372 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:44:05,760 WARN L222 SmtUtils]: Spent 10.53s on a formula simplification that was a NOOP. DAG size: 316 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:44:14,502 WARN L222 SmtUtils]: Spent 8.74s on a formula simplification that was a NOOP. DAG size: 372 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:44:21,529 WARN L222 SmtUtils]: Spent 7.02s on a formula simplification that was a NOOP. DAG size: 316 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:44:35,269 WARN L222 SmtUtils]: Spent 12.66s on a formula simplification that was a NOOP. DAG size: 518 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:44:46,443 WARN L222 SmtUtils]: Spent 11.17s on a formula simplification that was a NOOP. DAG size: 509 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:45:24,939 WARN L222 SmtUtils]: Spent 38.49s on a formula simplification that was a NOOP. DAG size: 518 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:45:51,886 WARN L222 SmtUtils]: Spent 26.94s on a formula simplification that was a NOOP. DAG size: 509 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:46:12,020 WARN L222 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 311 DAG size of output: 304 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:48:24,938 WARN L222 SmtUtils]: Spent 2.18m on a formula simplification. DAG size of input: 609 DAG size of output: 607 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:49:16,946 WARN L222 SmtUtils]: Spent 51.99s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:52:09,430 WARN L222 SmtUtils]: Spent 2.87m on a formula simplification. DAG size of input: 615 DAG size of output: 611 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:53:13,619 WARN L222 SmtUtils]: Spent 1.07m on a formula simplification that was a NOOP. DAG size: 584 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:53:13,622 INFO L134 LiptonReduction]: Checked pairs total: 30501 [2023-08-30 23:53:13,622 INFO L136 LiptonReduction]: Total number of compositions: 939 [2023-08-30 23:53:13,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:53:13,637 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45b42a45, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:53:13,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 23:53:13,646 INFO L130 PetriNetUnfolder]: 6/11 cut-off events. [2023-08-30 23:53:13,646 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:53:13,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:53:13,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 23:53:13,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:53:13,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:53:13,652 INFO L85 PathProgramCache]: Analyzing trace with hash 3239691, now seen corresponding path program 1 times [2023-08-30 23:53:13,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:53:13,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922416533] [2023-08-30 23:53:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:53:13,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:53:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:53:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:53:14,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:53:14,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922416533] [2023-08-30 23:53:14,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922416533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:53:14,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:53:14,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:53:14,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037450743] [2023-08-30 23:53:14,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:53:14,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 23:53:14,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:53:14,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 23:53:14,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 23:53:14,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 820 out of 1803 [2023-08-30 23:53:14,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 64 transitions, 137 flow. Second operand has 2 states, 2 states have (on average 821.5) internal successors, (1643), 2 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:14,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:53:14,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 820 of 1803 [2023-08-30 23:53:14,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:53:14,620 INFO L130 PetriNetUnfolder]: 331/601 cut-off events. [2023-08-30 23:53:14,620 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-08-30 23:53:14,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 601 events. 331/601 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2178 event pairs, 321 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 1082. Up to 602 conditions per place. [2023-08-30 23:53:14,626 INFO L137 encePairwiseOnDemand]: 1786/1803 looper letters, 47 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2023-08-30 23:53:14,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 197 flow [2023-08-30 23:53:14,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 23:53:14,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 23:53:14,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1704 transitions. [2023-08-30 23:53:14,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47254575707154745 [2023-08-30 23:53:14,648 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1704 transitions. [2023-08-30 23:53:14,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1704 transitions. [2023-08-30 23:53:14,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:53:14,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1704 transitions. [2023-08-30 23:53:14,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 852.0) internal successors, (1704), 2 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:14,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1803.0) internal successors, (5409), 3 states have internal predecessors, (5409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:14,678 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1803.0) internal successors, (5409), 3 states have internal predecessors, (5409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:14,680 INFO L175 Difference]: Start difference. First operand has 45 places, 64 transitions, 137 flow. Second operand 2 states and 1704 transitions. [2023-08-30 23:53:14,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 197 flow [2023-08-30 23:53:14,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 23:53:14,687 INFO L231 Difference]: Finished difference. Result has 42 places, 47 transitions, 98 flow [2023-08-30 23:53:14,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2023-08-30 23:53:14,691 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2023-08-30 23:53:14,691 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 98 flow [2023-08-30 23:53:14,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 821.5) internal successors, (1643), 2 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:14,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:53:14,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:53:14,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:53:14,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:53:14,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:53:14,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1584559176, now seen corresponding path program 1 times [2023-08-30 23:53:14,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:53:14,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797313876] [2023-08-30 23:53:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:53:14,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:53:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:53:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:53:15,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:53:15,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797313876] [2023-08-30 23:53:15,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797313876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:53:15,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:53:15,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:53:15,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235261983] [2023-08-30 23:53:15,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:53:15,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:53:15,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:53:15,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:53:15,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:53:15,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 810 out of 1803 [2023-08-30 23:53:15,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 812.3333333333334) internal successors, (2437), 3 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:15,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:53:15,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 810 of 1803 [2023-08-30 23:53:15,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:53:16,010 INFO L130 PetriNetUnfolder]: 331/602 cut-off events. [2023-08-30 23:53:16,010 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 23:53:16,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 602 events. 331/602 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2175 event pairs, 321 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 1223. Up to 602 conditions per place. [2023-08-30 23:53:16,013 INFO L137 encePairwiseOnDemand]: 1799/1803 looper letters, 46 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-30 23:53:16,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 196 flow [2023-08-30 23:53:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:53:16,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:53:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2480 transitions. [2023-08-30 23:53:16,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45849510075799593 [2023-08-30 23:53:16,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2480 transitions. [2023-08-30 23:53:16,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2480 transitions. [2023-08-30 23:53:16,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:53:16,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2480 transitions. [2023-08-30 23:53:16,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 826.6666666666666) internal successors, (2480), 3 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:16,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1803.0) internal successors, (7212), 4 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:16,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1803.0) internal successors, (7212), 4 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:16,038 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 98 flow. Second operand 3 states and 2480 transitions. [2023-08-30 23:53:16,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 196 flow [2023-08-30 23:53:16,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 23:53:16,039 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 112 flow [2023-08-30 23:53:16,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2023-08-30 23:53:16,041 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2023-08-30 23:53:16,042 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 112 flow [2023-08-30 23:53:16,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 812.3333333333334) internal successors, (2437), 3 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:16,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:53:16,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:53:16,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:53:16,044 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:53:16,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:53:16,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1091993785, now seen corresponding path program 1 times [2023-08-30 23:53:16,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:53:16,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496005444] [2023-08-30 23:53:16,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:53:16,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:53:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:53:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:53:16,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:53:16,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496005444] [2023-08-30 23:53:16,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496005444] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:53:16,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047885490] [2023-08-30 23:53:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:53:16,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:53:16,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:53:16,697 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:53:16,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 23:53:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:53:17,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 23:53:17,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:53:17,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 23:53:17,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:53:17,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047885490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:53:17,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:53:17,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 23:53:17,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026522465] [2023-08-30 23:53:17,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:53:17,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:53:17,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:53:17,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:53:17,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:53:17,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 801 out of 1803 [2023-08-30 23:53:17,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 803.6666666666666) internal successors, (2411), 3 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:17,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:53:17,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 801 of 1803 [2023-08-30 23:53:17,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:53:18,120 INFO L130 PetriNetUnfolder]: 376/691 cut-off events. [2023-08-30 23:53:18,121 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 23:53:18,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 691 events. 376/691 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2822 event pairs, 135 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 1407. Up to 377 conditions per place. [2023-08-30 23:53:18,124 INFO L137 encePairwiseOnDemand]: 1799/1803 looper letters, 63 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-30 23:53:18,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 281 flow [2023-08-30 23:53:18,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:53:18,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:53:18,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2469 transitions. [2023-08-30 23:53:18,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564614531336661 [2023-08-30 23:53:18,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2469 transitions. [2023-08-30 23:53:18,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2469 transitions. [2023-08-30 23:53:18,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:53:18,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2469 transitions. [2023-08-30 23:53:18,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 823.0) internal successors, (2469), 3 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:18,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1803.0) internal successors, (7212), 4 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:18,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1803.0) internal successors, (7212), 4 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:18,149 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 112 flow. Second operand 3 states and 2469 transitions. [2023-08-30 23:53:18,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 281 flow [2023-08-30 23:53:18,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 277 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 23:53:18,151 INFO L231 Difference]: Finished difference. Result has 47 places, 50 transitions, 127 flow [2023-08-30 23:53:18,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=47, PETRI_TRANSITIONS=50} [2023-08-30 23:53:18,152 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-08-30 23:53:18,152 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 127 flow [2023-08-30 23:53:18,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 803.6666666666666) internal successors, (2411), 3 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:18,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:53:18,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:53:18,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 23:53:18,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:53:18,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:53:18,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:53:18,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1002200024, now seen corresponding path program 1 times [2023-08-30 23:53:18,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:53:18,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599823471] [2023-08-30 23:53:18,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:53:18,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:53:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:53:19,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:53:19,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:53:19,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599823471] [2023-08-30 23:53:19,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599823471] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:53:19,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64953432] [2023-08-30 23:53:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:53:19,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:53:19,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:53:19,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:53:19,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 23:53:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:53:20,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 23:53:20,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:53:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:53:20,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:53:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:53:20,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64953432] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:53:20,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:53:20,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 23:53:20,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073662314] [2023-08-30 23:53:20,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:53:20,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:53:20,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:53:20,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:53:20,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:53:20,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 806 out of 1803 [2023-08-30 23:53:20,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 50 transitions, 127 flow. Second operand has 8 states, 8 states have (on average 808.125) internal successors, (6465), 8 states have internal predecessors, (6465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:20,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:53:20,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 806 of 1803 [2023-08-30 23:53:20,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:53:21,280 INFO L130 PetriNetUnfolder]: 376/696 cut-off events. [2023-08-30 23:53:21,280 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-08-30 23:53:21,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 696 events. 376/696 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2754 event pairs, 358 based on Foata normal form. 0/626 useless extension candidates. Maximal degree in co-relation 1532. Up to 691 conditions per place. [2023-08-30 23:53:21,284 INFO L137 encePairwiseOnDemand]: 1795/1803 looper letters, 47 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2023-08-30 23:53:21,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 253 flow [2023-08-30 23:53:21,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:53:21,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:53:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4899 transitions. [2023-08-30 23:53:21,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528563505268996 [2023-08-30 23:53:21,296 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4899 transitions. [2023-08-30 23:53:21,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4899 transitions. [2023-08-30 23:53:21,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:53:21,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4899 transitions. [2023-08-30 23:53:21,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 816.5) internal successors, (4899), 6 states have internal predecessors, (4899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:21,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1803.0) internal successors, (12621), 7 states have internal predecessors, (12621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:21,335 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1803.0) internal successors, (12621), 7 states have internal predecessors, (12621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:21,336 INFO L175 Difference]: Start difference. First operand has 47 places, 50 transitions, 127 flow. Second operand 6 states and 4899 transitions. [2023-08-30 23:53:21,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 253 flow [2023-08-30 23:53:21,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:53:21,339 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 190 flow [2023-08-30 23:53:21,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2023-08-30 23:53:21,340 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2023-08-30 23:53:21,340 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 190 flow [2023-08-30 23:53:21,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 808.125) internal successors, (6465), 8 states have internal predecessors, (6465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:21,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:53:21,343 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:53:21,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 23:53:21,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 23:53:21,553 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:53:21,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:53:21,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1231745623, now seen corresponding path program 2 times [2023-08-30 23:53:21,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:53:21,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144097674] [2023-08-30 23:53:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:53:21,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:53:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:53:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:53:22,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:53:22,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144097674] [2023-08-30 23:53:22,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144097674] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:53:22,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451003301] [2023-08-30 23:53:22,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 23:53:22,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:53:22,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:53:22,518 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:53:22,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 23:53:24,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 23:53:24,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 23:53:24,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 23:53:24,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:53:24,532 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 23:53:24,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 53 [2023-08-30 23:53:24,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 23:53:24,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 23:53:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 23:53:24,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:53:24,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451003301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:53:24,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:53:24,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-30 23:53:24,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130176514] [2023-08-30 23:53:24,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:53:24,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:53:24,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:53:24,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:53:24,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-30 23:53:24,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 799 out of 1803 [2023-08-30 23:53:24,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 801.75) internal successors, (3207), 4 states have internal predecessors, (3207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:24,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:53:24,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 799 of 1803 [2023-08-30 23:53:24,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:53:25,845 INFO L130 PetriNetUnfolder]: 412/783 cut-off events. [2023-08-30 23:53:25,845 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-08-30 23:53:25,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1718 conditions, 783 events. 412/783 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3327 event pairs, 229 based on Foata normal form. 0/727 useless extension candidates. Maximal degree in co-relation 1709. Up to 291 conditions per place. [2023-08-30 23:53:25,849 INFO L137 encePairwiseOnDemand]: 1798/1803 looper letters, 76 selfloop transitions, 6 changer transitions 2/84 dead transitions. [2023-08-30 23:53:25,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 429 flow [2023-08-30 23:53:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:53:25,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:53:25,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3273 transitions. [2023-08-30 23:53:25,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4538269550748752 [2023-08-30 23:53:25,857 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3273 transitions. [2023-08-30 23:53:25,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3273 transitions. [2023-08-30 23:53:25,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:53:25,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3273 transitions. [2023-08-30 23:53:25,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 818.25) internal successors, (3273), 4 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:25,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1803.0) internal successors, (9015), 5 states have internal predecessors, (9015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:25,874 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1803.0) internal successors, (9015), 5 states have internal predecessors, (9015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:25,875 INFO L175 Difference]: Start difference. First operand has 54 places, 55 transitions, 190 flow. Second operand 4 states and 3273 transitions. [2023-08-30 23:53:25,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 429 flow [2023-08-30 23:53:25,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 419 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 23:53:25,880 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 209 flow [2023-08-30 23:53:25,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2023-08-30 23:53:25,882 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2023-08-30 23:53:25,882 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 209 flow [2023-08-30 23:53:25,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 801.75) internal successors, (3207), 4 states have internal predecessors, (3207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:25,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:53:25,883 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:53:25,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 23:53:26,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:53:26,093 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:53:26,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:53:26,094 INFO L85 PathProgramCache]: Analyzing trace with hash -470590488, now seen corresponding path program 1 times [2023-08-30 23:53:26,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:53:26,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886344998] [2023-08-30 23:53:26,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:53:26,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:53:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:53:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:53:26,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:53:26,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886344998] [2023-08-30 23:53:26,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886344998] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:53:26,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974868244] [2023-08-30 23:53:26,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:53:26,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:53:26,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:53:26,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:53:26,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 23:53:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:53:28,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 23:53:28,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:53:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:53:28,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:53:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:53:29,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974868244] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:53:29,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:53:29,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-30 23:53:29,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176843573] [2023-08-30 23:53:29,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:53:29,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 23:53:29,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:53:29,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 23:53:29,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-08-30 23:53:29,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 808 out of 1803 [2023-08-30 23:53:29,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 209 flow. Second operand has 16 states, 16 states have (on average 809.625) internal successors, (12954), 16 states have internal predecessors, (12954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:29,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:53:29,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 808 of 1803 [2023-08-30 23:53:29,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:53:31,104 INFO L130 PetriNetUnfolder]: 412/792 cut-off events. [2023-08-30 23:53:31,104 INFO L131 PetriNetUnfolder]: For 247/247 co-relation queries the response was YES. [2023-08-30 23:53:31,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 792 events. 412/792 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3327 event pairs, 388 based on Foata normal form. 9/768 useless extension candidates. Maximal degree in co-relation 1862. Up to 778 conditions per place. [2023-08-30 23:53:31,108 INFO L137 encePairwiseOnDemand]: 1795/1803 looper letters, 49 selfloop transitions, 17 changer transitions 0/66 dead transitions. [2023-08-30 23:53:31,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 66 transitions, 389 flow [2023-08-30 23:53:31,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 23:53:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 23:53:31,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 9776 transitions. [2023-08-30 23:53:31,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518395267147347 [2023-08-30 23:53:31,129 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 9776 transitions. [2023-08-30 23:53:31,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 9776 transitions. [2023-08-30 23:53:31,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:53:31,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 9776 transitions. [2023-08-30 23:53:31,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 814.6666666666666) internal successors, (9776), 12 states have internal predecessors, (9776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:31,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1803.0) internal successors, (23439), 13 states have internal predecessors, (23439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:31,178 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1803.0) internal successors, (23439), 13 states have internal predecessors, (23439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:31,178 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 209 flow. Second operand 12 states and 9776 transitions. [2023-08-30 23:53:31,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 66 transitions, 389 flow [2023-08-30 23:53:31,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:53:31,181 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 346 flow [2023-08-30 23:53:31,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=346, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2023-08-30 23:53:31,182 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2023-08-30 23:53:31,182 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 346 flow [2023-08-30 23:53:31,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 809.625) internal successors, (12954), 16 states have internal predecessors, (12954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:31,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:53:31,186 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:53:31,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 23:53:31,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:53:31,397 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:53:31,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:53:31,398 INFO L85 PathProgramCache]: Analyzing trace with hash 710289800, now seen corresponding path program 2 times [2023-08-30 23:53:31,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:53:31,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907850088] [2023-08-30 23:53:31,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:53:31,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:53:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:53:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:53:32,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:53:32,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907850088] [2023-08-30 23:53:32,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907850088] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:53:32,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726314481] [2023-08-30 23:53:32,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 23:53:32,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:53:32,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:53:32,757 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:53:32,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 23:53:33,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 23:53:33,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 23:53:33,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 243 conjunts are in the unsatisfiable core [2023-08-30 23:53:33,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:53:34,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:34,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:40,034 WARN L222 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 1202 DAG size of output: 283 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-30 23:53:40,040 INFO L321 Elim1Store]: treesize reduction 9076, result has 6.5 percent of original size [2023-08-30 23:53:40,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 77 case distinctions, treesize of input 427 treesize of output 974 [2023-08-30 23:53:49,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:49,718 INFO L321 Elim1Store]: treesize reduction 198, result has 23.6 percent of original size [2023-08-30 23:53:49,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 403 treesize of output 436 [2023-08-30 23:53:49,832 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 23:53:49,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 347 treesize of output 346 [2023-08-30 23:53:49,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 335 treesize of output 335 [2023-08-30 23:53:49,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 329 treesize of output 329 [2023-08-30 23:53:49,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 323 treesize of output 323 [2023-08-30 23:53:50,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:53:50,479 INFO L321 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2023-08-30 23:53:50,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 100 treesize of output 116 [2023-08-30 23:53:50,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 23:53:50,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 23:53:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 23:53:50,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:53:50,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726314481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:53:50,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:53:50,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2023-08-30 23:53:50,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134250290] [2023-08-30 23:53:50,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:53:50,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:53:50,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:53:50,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:53:50,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-08-30 23:53:51,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 783 out of 1803 [2023-08-30 23:53:51,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 784.7142857142857) internal successors, (5493), 7 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:51,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:53:51,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 783 of 1803 [2023-08-30 23:53:51,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:53:52,787 INFO L130 PetriNetUnfolder]: 387/750 cut-off events. [2023-08-30 23:53:52,788 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2023-08-30 23:53:52,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 750 events. 387/750 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3146 event pairs, 223 based on Foata normal form. 17/734 useless extension candidates. Maximal degree in co-relation 1763. Up to 333 conditions per place. [2023-08-30 23:53:52,792 INFO L137 encePairwiseOnDemand]: 1791/1803 looper letters, 78 selfloop transitions, 14 changer transitions 2/94 dead transitions. [2023-08-30 23:53:52,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 94 transitions, 609 flow [2023-08-30 23:53:52,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:53:52,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:53:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4775 transitions. [2023-08-30 23:53:52,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413939730079497 [2023-08-30 23:53:52,809 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4775 transitions. [2023-08-30 23:53:52,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4775 transitions. [2023-08-30 23:53:52,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:53:52,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4775 transitions. [2023-08-30 23:53:52,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 795.8333333333334) internal successors, (4775), 6 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:52,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1803.0) internal successors, (12621), 7 states have internal predecessors, (12621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:52,835 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1803.0) internal successors, (12621), 7 states have internal predecessors, (12621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:52,835 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 346 flow. Second operand 6 states and 4775 transitions. [2023-08-30 23:53:52,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 94 transitions, 609 flow [2023-08-30 23:53:52,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 94 transitions, 569 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-08-30 23:53:52,840 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 349 flow [2023-08-30 23:53:52,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=349, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2023-08-30 23:53:52,841 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2023-08-30 23:53:52,841 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 349 flow [2023-08-30 23:53:52,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 784.7142857142857) internal successors, (5493), 7 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:52,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:53:52,842 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:53:52,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 23:53:53,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:53:53,053 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:53:53,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:53:53,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1903990909, now seen corresponding path program 1 times [2023-08-30 23:53:53,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:53:53,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750852309] [2023-08-30 23:53:53,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:53:53,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:53:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:53:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:53:54,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:53:54,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750852309] [2023-08-30 23:53:54,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750852309] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:53:54,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899978667] [2023-08-30 23:53:54,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:53:54,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:53:54,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:53:54,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:53:54,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 23:53:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:53:55,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 23:53:55,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:53:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:53:56,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:53:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:53:56,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899978667] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:53:56,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:53:56,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-08-30 23:53:56,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573792565] [2023-08-30 23:53:56,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:53:56,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 23:53:56,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:53:56,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 23:53:56,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=812, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 23:53:57,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 808 out of 1803 [2023-08-30 23:53:57,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 349 flow. Second operand has 34 states, 34 states have (on average 809.3529411764706) internal successors, (27518), 34 states have internal predecessors, (27518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:53:57,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:53:57,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 808 of 1803 [2023-08-30 23:53:57,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:54:24,444 INFO L130 PetriNetUnfolder]: 387/768 cut-off events. [2023-08-30 23:54:24,444 INFO L131 PetriNetUnfolder]: For 1472/1472 co-relation queries the response was YES. [2023-08-30 23:54:24,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1938 conditions, 768 events. 387/768 cut-off events. For 1472/1472 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3197 event pairs, 365 based on Foata normal form. 30/767 useless extension candidates. Maximal degree in co-relation 1919. Up to 736 conditions per place. [2023-08-30 23:54:24,448 INFO L137 encePairwiseOnDemand]: 1795/1803 looper letters, 50 selfloop transitions, 35 changer transitions 0/85 dead transitions. [2023-08-30 23:54:24,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 85 transitions, 615 flow [2023-08-30 23:54:24,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 23:54:24,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 23:54:24,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 19508 transitions. [2023-08-30 23:54:24,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4508227029025698 [2023-08-30 23:54:24,485 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 19508 transitions. [2023-08-30 23:54:24,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 19508 transitions. [2023-08-30 23:54:24,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:54:24,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 19508 transitions. [2023-08-30 23:54:24,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 812.8333333333334) internal successors, (19508), 24 states have internal predecessors, (19508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:54:24,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 1803.0) internal successors, (45075), 25 states have internal predecessors, (45075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:54:24,560 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 1803.0) internal successors, (45075), 25 states have internal predecessors, (45075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:54:24,560 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 349 flow. Second operand 24 states and 19508 transitions. [2023-08-30 23:54:24,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 85 transitions, 615 flow [2023-08-30 23:54:24,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 85 transitions, 592 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 23:54:24,565 INFO L231 Difference]: Finished difference. Result has 107 places, 85 transitions, 614 flow [2023-08-30 23:54:24,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1803, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=614, PETRI_PLACES=107, PETRI_TRANSITIONS=85} [2023-08-30 23:54:24,567 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 62 predicate places. [2023-08-30 23:54:24,567 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 85 transitions, 614 flow [2023-08-30 23:54:24,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 809.3529411764706) internal successors, (27518), 34 states have internal predecessors, (27518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:54:24,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:54:24,570 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:54:24,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 23:54:24,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:54:24,784 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:54:24,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:54:24,784 INFO L85 PathProgramCache]: Analyzing trace with hash -39699523, now seen corresponding path program 2 times [2023-08-30 23:54:24,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:54:24,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343225561] [2023-08-30 23:54:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:54:24,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:54:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:54:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:54:27,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:54:27,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343225561] [2023-08-30 23:54:27,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343225561] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:54:27,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201776358] [2023-08-30 23:54:27,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 23:54:27,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:54:27,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:54:27,238 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:54:27,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 23:54:32,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 23:54:32,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 23:54:32,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-30 23:54:32,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:54:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:54:32,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:54:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:54:34,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201776358] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:54:34,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:54:34,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2023-08-30 23:54:34,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890667400] [2023-08-30 23:54:34,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:54:34,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-08-30 23:54:34,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:54:34,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-08-30 23:54:34,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1221, Invalid=3749, Unknown=0, NotChecked=0, Total=4970 [2023-08-30 23:54:41,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 806 out of 1803 [2023-08-30 23:54:41,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 85 transitions, 614 flow. Second operand has 71 states, 71 states have (on average 807.169014084507) internal successors, (57309), 71 states have internal predecessors, (57309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:54:41,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:54:41,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 806 of 1803 [2023-08-30 23:54:41,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15