./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 200a1054abe3180675ad7323ac963ef4172b7cd0baaabe20a569e3117ba88111 --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 13:31:32,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 13:31:32,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 13:31:32,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 13:31:32,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 13:31:32,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 13:31:32,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 13:31:32,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 13:31:32,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 13:31:32,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 13:31:32,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 13:31:32,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 13:31:32,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 13:31:32,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 13:31:32,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 13:31:32,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 13:31:32,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 13:31:32,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 13:31:32,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 13:31:32,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 13:31:32,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 13:31:32,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 13:31:32,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 13:31:32,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 13:31:32,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 13:31:32,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 13:31:32,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 13:31:32,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 13:31:32,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 13:31:32,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 13:31:32,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 13:31:32,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 13:31:32,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 13:31:32,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 13:31:32,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 13:31:32,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 13:31:32,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 13:31:32,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 13:31:32,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 13:31:32,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 13:31:32,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 13:31:32,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 13:31:32,488 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 13:31:32,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 13:31:32,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 13:31:32,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 13:31:32,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 13:31:32,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 13:31:32,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 13:31:32,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 13:31:32,492 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 13:31:32,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 13:31:32,493 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 13:31:32,493 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 13:31:32,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 13:31:32,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 13:31:32,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 13:31:32,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 13:31:32,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 13:31:32,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 13:31:32,494 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 13:31:32,494 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 13:31:32,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 13:31:32,494 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 13:31:32,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 13:31:32,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 13:31:32,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 13:31:32,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 13:31:32,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:31:32,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 13:31:32,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 13:31:32,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 13:31:32,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 13:31:32,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 13:31:32,496 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 13:31:32,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 13:31:32,497 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 13:31:32,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 13:31:32,497 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 13:31:32,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 200a1054abe3180675ad7323ac963ef4172b7cd0baaabe20a569e3117ba88111 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 13:31:32,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 13:31:32,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 13:31:32,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 13:31:32,793 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 13:31:32,793 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 13:31:32,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i [2023-08-30 13:31:33,988 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 13:31:34,503 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 13:31:34,503 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i [2023-08-30 13:31:34,546 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aeb5dffa/ddade1bfa20d447aac01c2b90e1d54b6/FLAGf618a018b [2023-08-30 13:31:34,568 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aeb5dffa/ddade1bfa20d447aac01c2b90e1d54b6 [2023-08-30 13:31:34,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 13:31:34,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 13:31:34,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 13:31:34,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 13:31:34,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 13:31:34,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:31:34" (1/1) ... [2023-08-30 13:31:34,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77466c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:31:34, skipping insertion in model container [2023-08-30 13:31:34,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:31:34" (1/1) ... [2023-08-30 13:31:34,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 13:31:34,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 13:31:35,012 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i[5469,5482] [2023-08-30 13:31:37,393 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 13:31:37,980 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 13:31:37,983 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 13:31:38,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:31:38,075 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 13:31:38,099 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i[5469,5482] [2023-08-30 13:31:38,269 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 13:31:38,321 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 13:31:38,321 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 13:31:38,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:31:38,657 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:31:38,657 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:31:38,657 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:31:38,657 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:31:38,657 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:31:38,657 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:31:38,658 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:31:38,664 INFO L208 MainTranslator]: Completed translation [2023-08-30 13:31:38,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:31:38 WrapperNode [2023-08-30 13:31:38,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 13:31:38,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 13:31:38,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 13:31:38,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 13:31:38,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:31:38" (1/1) ... [2023-08-30 13:31:38,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:31:38" (1/1) ... [2023-08-30 13:31:38,820 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 56, statements flattened = 765 [2023-08-30 13:31:38,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 13:31:38,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 13:31:38,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 13:31:38,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 13:31:38,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:31:38" (1/1) ... [2023-08-30 13:31:38,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:31:38" (1/1) ... [2023-08-30 13:31:38,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:31:38" (1/1) ... [2023-08-30 13:31:38,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:31:38" (1/1) ... [2023-08-30 13:31:38,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:31:38" (1/1) ... [2023-08-30 13:31:38,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:31:38" (1/1) ... [2023-08-30 13:31:38,871 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:31:38" (1/1) ... [2023-08-30 13:31:38,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:31:38" (1/1) ... [2023-08-30 13:31:38,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 13:31:38,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 13:31:38,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 13:31:38,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 13:31:38,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:31:38" (1/1) ... [2023-08-30 13:31:38,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:31:38,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:31:38,922 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 13:31:38,943 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 13:31:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 13:31:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 13:31:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 13:31:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 13:31:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 13:31:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 13:31:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 13:31:38,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 13:31:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_open [2023-08-30 13:31:38,958 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_open [2023-08-30 13:31:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 13:31:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 13:31:38,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 13:31:38,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 13:31:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 13:31:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 13:31:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 13:31:38,962 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 13:31:39,422 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 13:31:39,424 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 13:31:40,271 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 13:31:40,286 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 13:31:40,286 INFO L302 CfgBuilder]: Removed 27 assume(true) statements. [2023-08-30 13:31:40,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:31:40 BoogieIcfgContainer [2023-08-30 13:31:40,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 13:31:40,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 13:31:40,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 13:31:40,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 13:31:40,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:31:34" (1/3) ... [2023-08-30 13:31:40,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44289dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:31:40, skipping insertion in model container [2023-08-30 13:31:40,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:31:38" (2/3) ... [2023-08-30 13:31:40,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44289dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:31:40, skipping insertion in model container [2023-08-30 13:31:40,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:31:40" (3/3) ... [2023-08-30 13:31:40,298 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i [2023-08-30 13:31:40,305 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 13:31:40,313 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 13:31:40,313 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-08-30 13:31:40,314 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 13:31:40,481 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 13:31:40,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 815 places, 864 transitions, 1744 flow [2023-08-30 13:31:40,853 INFO L130 PetriNetUnfolder]: 56/862 cut-off events. [2023-08-30 13:31:40,853 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 13:31:40,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 862 events. 56/862 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1252 event pairs, 0 based on Foata normal form. 0/778 useless extension candidates. Maximal degree in co-relation 695. Up to 9 conditions per place. [2023-08-30 13:31:40,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 815 places, 864 transitions, 1744 flow [2023-08-30 13:31:40,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 805 places, 854 transitions, 1717 flow [2023-08-30 13:31:40,877 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:31:40,888 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 805 places, 854 transitions, 1717 flow [2023-08-30 13:31:40,892 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 805 places, 854 transitions, 1717 flow [2023-08-30 13:31:40,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 805 places, 854 transitions, 1717 flow [2023-08-30 13:31:41,062 INFO L130 PetriNetUnfolder]: 56/854 cut-off events. [2023-08-30 13:31:41,062 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 13:31:41,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 854 events. 56/854 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1183 event pairs, 0 based on Foata normal form. 0/770 useless extension candidates. Maximal degree in co-relation 695. Up to 9 conditions per place. [2023-08-30 13:31:41,076 INFO L119 LiptonReduction]: Number of co-enabled transitions 18148 [2023-08-30 13:32:50,622 WARN L222 SmtUtils]: Spent 7.30s on a formula simplification that was a NOOP. DAG size: 305 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:33:02,279 WARN L222 SmtUtils]: Spent 6.78s on a formula simplification that was a NOOP. DAG size: 308 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:34:54,226 WARN L222 SmtUtils]: Spent 1.76m on a formula simplification. DAG size of input: 597 DAG size of output: 595 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:35:46,135 WARN L222 SmtUtils]: Spent 51.90s on a formula simplification that was a NOOP. DAG size: 551 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:36:42,557 WARN L222 SmtUtils]: Spent 56.42s on a formula simplification. DAG size of input: 600 DAG size of output: 598 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:37:08,119 WARN L222 SmtUtils]: Spent 25.55s on a formula simplification that was a NOOP. DAG size: 554 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:38:03,329 WARN L222 SmtUtils]: Spent 51.42s on a formula simplification that was a NOOP. DAG size: 585 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:38:23,392 WARN L222 SmtUtils]: Spent 20.06s 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 13:39:25,951 WARN L222 SmtUtils]: Spent 1.04m on a formula simplification that was a NOOP. DAG size: 588 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:39:53,673 WARN L222 SmtUtils]: Spent 27.72s 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 13:40:05,625 INFO L134 LiptonReduction]: Checked pairs total: 17243 [2023-08-30 13:40:05,626 INFO L136 LiptonReduction]: Total number of compositions: 1011 [2023-08-30 13:40:05,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:40:05,641 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;@40bb681b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:40:05,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-30 13:40:05,648 INFO L130 PetriNetUnfolder]: 2/5 cut-off events. [2023-08-30 13:40:05,649 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:40:05,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:05,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 13:40:05,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:40:05,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:05,654 INFO L85 PathProgramCache]: Analyzing trace with hash 3206001, now seen corresponding path program 1 times [2023-08-30 13:40:05,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:05,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901938395] [2023-08-30 13:40:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:05,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:06,117 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 13:40:06,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:06,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901938395] [2023-08-30 13:40:06,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901938395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:06,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:40:06,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:40:06,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777152570] [2023-08-30 13:40:06,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:06,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 13:40:06,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:06,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 13:40:06,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 13:40:06,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 810 out of 1875 [2023-08-30 13:40:06,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 173 flow. Second operand has 2 states, 2 states have (on average 811.5) internal successors, (1623), 2 states have internal predecessors, (1623), 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 13:40:06,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:06,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 810 of 1875 [2023-08-30 13:40:06,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:06,563 INFO L130 PetriNetUnfolder]: 217/410 cut-off events. [2023-08-30 13:40:06,565 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-30 13:40:06,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 410 events. 217/410 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1444 event pairs, 207 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 670. Up to 411 conditions per place. [2023-08-30 13:40:06,568 INFO L137 encePairwiseOnDemand]: 1841/1875 looper letters, 42 selfloop transitions, 0 changer transitions 6/48 dead transitions. [2023-08-30 13:40:06,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 201 flow [2023-08-30 13:40:06,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 13:40:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 13:40:06,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1702 transitions. [2023-08-30 13:40:06,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45386666666666664 [2023-08-30 13:40:06,592 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1702 transitions. [2023-08-30 13:40:06,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1702 transitions. [2023-08-30 13:40:06,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:06,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1702 transitions. [2023-08-30 13:40:06,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 851.0) internal successors, (1702), 2 states have internal predecessors, (1702), 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 13:40:06,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1875.0) internal successors, (5625), 3 states have internal predecessors, (5625), 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 13:40:06,624 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1875.0) internal successors, (5625), 3 states have internal predecessors, (5625), 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 13:40:06,625 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 173 flow. Second operand 2 states and 1702 transitions. [2023-08-30 13:40:06,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 201 flow [2023-08-30 13:40:06,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 13:40:06,631 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 88 flow [2023-08-30 13:40:06,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-30 13:40:06,635 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -23 predicate places. [2023-08-30 13:40:06,636 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 88 flow [2023-08-30 13:40:06,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 811.5) internal successors, (1623), 2 states have internal predecessors, (1623), 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 13:40:06,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:06,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 13:40:06,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 13:40:06,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:40:06,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:06,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1213780977, now seen corresponding path program 1 times [2023-08-30 13:40:06,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:06,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261278825] [2023-08-30 13:40:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:06,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:06,986 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 13:40:06,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:06,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261278825] [2023-08-30 13:40:06,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261278825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:06,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:40:06,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:40:06,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336937989] [2023-08-30 13:40:06,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:06,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:40:06,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:06,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:40:06,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:40:07,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 800 out of 1875 [2023-08-30 13:40:07,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 801.6666666666666) internal successors, (2405), 3 states have internal predecessors, (2405), 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 13:40:07,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:07,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 800 of 1875 [2023-08-30 13:40:07,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:07,367 INFO L130 PetriNetUnfolder]: 243/469 cut-off events. [2023-08-30 13:40:07,367 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 13:40:07,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 469 events. 243/469 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1814 event pairs, 234 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 960. Up to 238 conditions per place. [2023-08-30 13:40:07,370 INFO L137 encePairwiseOnDemand]: 1869/1875 looper letters, 53 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2023-08-30 13:40:07,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 57 transitions, 236 flow [2023-08-30 13:40:07,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:40:07,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:40:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2459 transitions. [2023-08-30 13:40:07,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371555555555556 [2023-08-30 13:40:07,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2459 transitions. [2023-08-30 13:40:07,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2459 transitions. [2023-08-30 13:40:07,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:07,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2459 transitions. [2023-08-30 13:40:07,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 819.6666666666666) internal successors, (2459), 3 states have internal predecessors, (2459), 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 13:40:07,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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 13:40:07,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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 13:40:07,396 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 88 flow. Second operand 3 states and 2459 transitions. [2023-08-30 13:40:07,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 57 transitions, 236 flow [2023-08-30 13:40:07,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 13:40:07,399 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 92 flow [2023-08-30 13:40:07,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2023-08-30 13:40:07,400 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -29 predicate places. [2023-08-30 13:40:07,400 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 92 flow [2023-08-30 13:40:07,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 801.6666666666666) internal successors, (2405), 3 states have internal predecessors, (2405), 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 13:40:07,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:07,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:40:07,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 13:40:07,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:40:07,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:07,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1027508655, now seen corresponding path program 1 times [2023-08-30 13:40:07,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:07,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415204799] [2023-08-30 13:40:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:07,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:07,630 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 13:40:07,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:07,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415204799] [2023-08-30 13:40:07,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415204799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:07,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:40:07,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:40:07,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547777385] [2023-08-30 13:40:07,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:07,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:40:07,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:07,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:40:07,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:40:07,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 803 out of 1875 [2023-08-30 13:40:07,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 805.0) internal successors, (2415), 3 states have internal predecessors, (2415), 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 13:40:07,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:07,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 803 of 1875 [2023-08-30 13:40:07,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:08,257 INFO L130 PetriNetUnfolder]: 243/470 cut-off events. [2023-08-30 13:40:08,257 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 13:40:08,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 470 events. 243/470 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1829 event pairs, 234 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 966. Up to 469 conditions per place. [2023-08-30 13:40:08,260 INFO L137 encePairwiseOnDemand]: 1870/1875 looper letters, 38 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-08-30 13:40:08,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 176 flow [2023-08-30 13:40:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:40:08,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:40:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2452 transitions. [2023-08-30 13:40:08,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43591111111111114 [2023-08-30 13:40:08,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2452 transitions. [2023-08-30 13:40:08,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2452 transitions. [2023-08-30 13:40:08,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:08,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2452 transitions. [2023-08-30 13:40:08,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 817.3333333333334) internal successors, (2452), 3 states have internal predecessors, (2452), 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 13:40:08,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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 13:40:08,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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 13:40:08,285 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 92 flow. Second operand 3 states and 2452 transitions. [2023-08-30 13:40:08,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 176 flow [2023-08-30 13:40:08,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:40:08,286 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 101 flow [2023-08-30 13:40:08,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2023-08-30 13:40:08,287 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -28 predicate places. [2023-08-30 13:40:08,287 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 101 flow [2023-08-30 13:40:08,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 805.0) internal successors, (2415), 3 states have internal predecessors, (2415), 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 13:40:08,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:08,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:40:08,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 13:40:08,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:40:08,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:08,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1788000405, now seen corresponding path program 1 times [2023-08-30 13:40:08,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:08,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108057855] [2023-08-30 13:40:08,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:08,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:08,530 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 13:40:08,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:08,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108057855] [2023-08-30 13:40:08,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108057855] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:40:08,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762651294] [2023-08-30 13:40:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:08,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:08,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:40:08,537 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 13:40:08,563 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 13:40:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:09,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 13:40:09,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:40:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:40:09,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:40:09,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762651294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:09,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:40:09,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 13:40:09,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323755944] [2023-08-30 13:40:09,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:09,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:40:09,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:09,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:40:09,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:40:09,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 803 out of 1875 [2023-08-30 13:40:09,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 804.75) internal successors, (3219), 4 states have internal predecessors, (3219), 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 13:40:09,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:09,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 803 of 1875 [2023-08-30 13:40:09,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:09,578 INFO L130 PetriNetUnfolder]: 243/469 cut-off events. [2023-08-30 13:40:09,579 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 13:40:09,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 469 events. 243/469 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1776 event pairs, 234 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 966. Up to 242 conditions per place. [2023-08-30 13:40:09,581 INFO L137 encePairwiseOnDemand]: 1871/1875 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-30 13:40:09,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 249 flow [2023-08-30 13:40:09,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:40:09,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:40:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3270 transitions. [2023-08-30 13:40:09,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436 [2023-08-30 13:40:09,589 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3270 transitions. [2023-08-30 13:40:09,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3270 transitions. [2023-08-30 13:40:09,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:09,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3270 transitions. [2023-08-30 13:40:09,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 817.5) internal successors, (3270), 4 states have internal predecessors, (3270), 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 13:40:09,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1875.0) internal successors, (9375), 5 states have internal predecessors, (9375), 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 13:40:09,608 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1875.0) internal successors, (9375), 5 states have internal predecessors, (9375), 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 13:40:09,608 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 101 flow. Second operand 4 states and 3270 transitions. [2023-08-30 13:40:09,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 249 flow [2023-08-30 13:40:09,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 244 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 13:40:09,610 INFO L231 Difference]: Finished difference. Result has 39 places, 40 transitions, 98 flow [2023-08-30 13:40:09,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=39, PETRI_TRANSITIONS=40} [2023-08-30 13:40:09,611 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -27 predicate places. [2023-08-30 13:40:09,611 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 40 transitions, 98 flow [2023-08-30 13:40:09,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 804.75) internal successors, (3219), 4 states have internal predecessors, (3219), 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 13:40:09,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:09,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:40:09,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 13:40:09,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:09,828 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:40:09,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:09,829 INFO L85 PathProgramCache]: Analyzing trace with hash 401961888, now seen corresponding path program 1 times [2023-08-30 13:40:09,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:09,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610747508] [2023-08-30 13:40:09,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:09,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:10,995 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 13:40:10,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:10,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610747508] [2023-08-30 13:40:10,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610747508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:10,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:40:10,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:40:10,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261484217] [2023-08-30 13:40:10,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:10,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:40:10,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:10,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:40:10,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:40:11,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 800 out of 1875 [2023-08-30 13:40:11,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 40 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 803.0) internal successors, (2409), 3 states have internal predecessors, (2409), 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 13:40:11,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:11,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 800 of 1875 [2023-08-30 13:40:11,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:11,383 INFO L130 PetriNetUnfolder]: 243/470 cut-off events. [2023-08-30 13:40:11,383 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 13:40:11,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 470 events. 243/470 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1779 event pairs, 234 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 969. Up to 470 conditions per place. [2023-08-30 13:40:11,385 INFO L137 encePairwiseOnDemand]: 1871/1875 looper letters, 39 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-30 13:40:11,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 182 flow [2023-08-30 13:40:11,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:40:11,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:40:11,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2442 transitions. [2023-08-30 13:40:11,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341333333333333 [2023-08-30 13:40:11,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2442 transitions. [2023-08-30 13:40:11,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2442 transitions. [2023-08-30 13:40:11,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:11,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2442 transitions. [2023-08-30 13:40:11,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 814.0) internal successors, (2442), 3 states have internal predecessors, (2442), 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 13:40:11,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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 13:40:11,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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 13:40:11,405 INFO L175 Difference]: Start difference. First operand has 39 places, 40 transitions, 98 flow. Second operand 3 states and 2442 transitions. [2023-08-30 13:40:11,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 182 flow [2023-08-30 13:40:11,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:40:11,408 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 107 flow [2023-08-30 13:40:11,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2023-08-30 13:40:11,411 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -26 predicate places. [2023-08-30 13:40:11,411 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 107 flow [2023-08-30 13:40:11,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 803.0) internal successors, (2409), 3 states have internal predecessors, (2409), 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 13:40:11,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:11,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:40:11,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 13:40:11,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:40:11,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash -615678914, now seen corresponding path program 1 times [2023-08-30 13:40:11,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:11,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35673327] [2023-08-30 13:40:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:11,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:12,263 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 13:40:12,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:12,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35673327] [2023-08-30 13:40:12,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35673327] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:40:12,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985311016] [2023-08-30 13:40:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:12,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:12,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:40:12,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:40:12,294 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 13:40:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:13,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 13:40:13,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:40:13,192 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 13:40:13,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:40:13,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985311016] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:40:13,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:40:13,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 13:40:13,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272279544] [2023-08-30 13:40:13,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:40:13,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:40:13,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:13,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:40:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:40:13,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 805 out of 1875 [2023-08-30 13:40:13,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 808.3333333333334) internal successors, (2425), 3 states have internal predecessors, (2425), 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 13:40:13,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:13,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 805 of 1875 [2023-08-30 13:40:13,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:13,595 INFO L130 PetriNetUnfolder]: 213/416 cut-off events. [2023-08-30 13:40:13,595 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 13:40:13,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 416 events. 213/416 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1540 event pairs, 84 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 865. Up to 216 conditions per place. [2023-08-30 13:40:13,598 INFO L137 encePairwiseOnDemand]: 1873/1875 looper letters, 46 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-08-30 13:40:13,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 214 flow [2023-08-30 13:40:13,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:40:13,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:40:13,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2461 transitions. [2023-08-30 13:40:13,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43751111111111113 [2023-08-30 13:40:13,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2461 transitions. [2023-08-30 13:40:13,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2461 transitions. [2023-08-30 13:40:13,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:13,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2461 transitions. [2023-08-30 13:40:13,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 820.3333333333334) internal successors, (2461), 3 states have internal predecessors, (2461), 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 13:40:13,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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 13:40:13,618 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1875.0) internal successors, (7500), 4 states have internal predecessors, (7500), 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 13:40:13,618 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 107 flow. Second operand 3 states and 2461 transitions. [2023-08-30 13:40:13,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 214 flow [2023-08-30 13:40:13,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 210 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 13:40:13,623 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 103 flow [2023-08-30 13:40:13,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-08-30 13:40:13,626 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -26 predicate places. [2023-08-30 13:40:13,626 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 103 flow [2023-08-30 13:40:13,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 808.3333333333334) internal successors, (2425), 3 states have internal predecessors, (2425), 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 13:40:13,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:13,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:40:13,640 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 13:40:13,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 13:40:13,841 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_changeErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:40:13,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:13,857 INFO L85 PathProgramCache]: Analyzing trace with hash -615678587, now seen corresponding path program 1 times [2023-08-30 13:40:13,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:13,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652843236] [2023-08-30 13:40:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:13,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:14,461 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 13:40:14,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:14,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652843236] [2023-08-30 13:40:14,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652843236] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:40:14,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124915283] [2023-08-30 13:40:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:14,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:14,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:40:14,464 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 13:40:14,495 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 13:40:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:15,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 13:40:15,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:40:15,493 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 13:40:15,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:40:15,727 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 13:40:15,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124915283] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:40:15,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:40:15,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 13:40:15,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740655219] [2023-08-30 13:40:15,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:40:15,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 13:40:15,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:15,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 13:40:15,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-08-30 13:40:15,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 798 out of 1875 [2023-08-30 13:40:15,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 103 flow. Second operand has 8 states, 8 states have (on average 800.0) internal successors, (6400), 8 states have internal predecessors, (6400), 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 13:40:15,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:15,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 798 of 1875 [2023-08-30 13:40:15,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:16,477 INFO L130 PetriNetUnfolder]: 213/421 cut-off events. [2023-08-30 13:40:16,477 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 13:40:16,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 421 events. 213/421 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1439 event pairs, 204 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 900. Up to 416 conditions per place. [2023-08-30 13:40:16,479 INFO L137 encePairwiseOnDemand]: 1867/1875 looper letters, 37 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2023-08-30 13:40:16,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 209 flow [2023-08-30 13:40:16,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:40:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:40:16,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4842 transitions. [2023-08-30 13:40:16,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4304 [2023-08-30 13:40:16,490 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4842 transitions. [2023-08-30 13:40:16,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4842 transitions. [2023-08-30 13:40:16,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:16,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4842 transitions. [2023-08-30 13:40:16,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 807.0) internal successors, (4842), 6 states have internal predecessors, (4842), 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 13:40:16,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1875.0) internal successors, (13125), 7 states have internal predecessors, (13125), 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 13:40:16,515 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1875.0) internal successors, (13125), 7 states have internal predecessors, (13125), 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 13:40:16,515 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 103 flow. Second operand 6 states and 4842 transitions. [2023-08-30 13:40:16,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 209 flow [2023-08-30 13:40:16,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:40:16,517 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 168 flow [2023-08-30 13:40:16,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-08-30 13:40:16,518 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -19 predicate places. [2023-08-30 13:40:16,518 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 168 flow [2023-08-30 13:40:16,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 800.0) internal successors, (6400), 8 states have internal predecessors, (6400), 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 13:40:16,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:16,520 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:40:16,535 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 13:40:16,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:16,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_pc8736x_gpio_changeErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:40:16,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:16,732 INFO L85 PathProgramCache]: Analyzing trace with hash 838970471, now seen corresponding path program 2 times [2023-08-30 13:40:16,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:16,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125148787] [2023-08-30 13:40:16,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:16,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:17,712 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 13:40:17,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:17,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125148787] [2023-08-30 13:40:17,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125148787] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:40:17,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699813357] [2023-08-30 13:40:17,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:40:17,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:17,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:40:17,717 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 13:40:17,752 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 13:40:20,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 13:40:20,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:40:20,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 13:40:20,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:40:20,260 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 13:40:20,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:40:20,540 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 13:40:20,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699813357] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:40:20,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:40:20,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 13:40:20,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754122694] [2023-08-30 13:40:20,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:40:20,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 13:40:20,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:40:20,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 13:40:20,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-08-30 13:40:21,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 796 out of 1875 [2023-08-30 13:40:21,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 168 flow. Second operand has 17 states, 17 states have (on average 797.4705882352941) internal successors, (13557), 17 states have internal predecessors, (13557), 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 13:40:21,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:40:21,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 796 of 1875 [2023-08-30 13:40:21,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:40:23,226 INFO L130 PetriNetUnfolder]: 213/430 cut-off events. [2023-08-30 13:40:23,226 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-08-30 13:40:23,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 430 events. 213/430 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1382 event pairs, 204 based on Foata normal form. 9/385 useless extension candidates. Maximal degree in co-relation 958. Up to 416 conditions per place. [2023-08-30 13:40:23,228 INFO L137 encePairwiseOnDemand]: 1867/1875 looper letters, 37 selfloop transitions, 17 changer transitions 0/54 dead transitions. [2023-08-30 13:40:23,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 324 flow [2023-08-30 13:40:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 13:40:23,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 13:40:23,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 9623 transitions. [2023-08-30 13:40:23,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276888888888889 [2023-08-30 13:40:23,249 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 9623 transitions. [2023-08-30 13:40:23,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 9623 transitions. [2023-08-30 13:40:23,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:40:23,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 9623 transitions. [2023-08-30 13:40:23,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 801.9166666666666) internal successors, (9623), 12 states have internal predecessors, (9623), 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 13:40:23,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1875.0) internal successors, (24375), 13 states have internal predecessors, (24375), 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 13:40:23,303 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1875.0) internal successors, (24375), 13 states have internal predecessors, (24375), 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 13:40:23,303 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 168 flow. Second operand 12 states and 9623 transitions. [2023-08-30 13:40:23,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 324 flow [2023-08-30 13:40:23,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 314 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 13:40:23,308 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 302 flow [2023-08-30 13:40:23,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=302, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2023-08-30 13:40:23,309 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -3 predicate places. [2023-08-30 13:40:23,310 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 302 flow [2023-08-30 13:40:23,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 797.4705882352941) internal successors, (13557), 17 states have internal predecessors, (13557), 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 13:40:23,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:40:23,314 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:40:23,326 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 13:40:23,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:23,526 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_pc8736x_gpio_changeErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:40:23,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:40:23,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1783138393, now seen corresponding path program 3 times [2023-08-30 13:40:23,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:40:23,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027299142] [2023-08-30 13:40:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:40:23,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:40:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:40:24,705 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 13:40:24,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:40:24,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027299142] [2023-08-30 13:40:24,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027299142] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:40:24,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474449265] [2023-08-30 13:40:24,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 13:40:24,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:40:24,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:40:24,709 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 13:40:24,723 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 13:41:02,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 13:41:02,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:41:02,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-30 13:41:02,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:41:02,590 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 13:41:02,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:41:03,444 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 13:41:03,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474449265] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:41:03,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:41:03,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-08-30 13:41:03,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456559738] [2023-08-30 13:41:03,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:41:03,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 13:41:03,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:41:03,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 13:41:03,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2023-08-30 13:41:06,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 796 out of 1875 [2023-08-30 13:41:06,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 302 flow. Second operand has 35 states, 35 states have (on average 797.2285714285714) internal successors, (27903), 35 states have internal predecessors, (27903), 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 13:41:06,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:41:06,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 796 of 1875 [2023-08-30 13:41:06,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:41:27,158 WARN L222 SmtUtils]: Spent 13.53s on a formula simplification. DAG size of input: 67 DAG size of output: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 13:41:44,261 WARN L222 SmtUtils]: Spent 8.95s on a formula simplification. DAG size of input: 61 DAG size of output: 43 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 13:42:00,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 13:42:02,262 INFO L130 PetriNetUnfolder]: 213/448 cut-off events. [2023-08-30 13:42:02,262 INFO L131 PetriNetUnfolder]: For 538/538 co-relation queries the response was YES. [2023-08-30 13:42:02,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 448 events. 213/448 cut-off events. For 538/538 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1352 event pairs, 204 based on Foata normal form. 18/412 useless extension candidates. Maximal degree in co-relation 1085. Up to 411 conditions per place. [2023-08-30 13:42:02,288 INFO L137 encePairwiseOnDemand]: 1867/1875 looper letters, 33 selfloop transitions, 39 changer transitions 0/72 dead transitions. [2023-08-30 13:42:02,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 72 transitions, 578 flow [2023-08-30 13:42:02,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 13:42:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 13:42:02,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 20007 transitions. [2023-08-30 13:42:02,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.426816 [2023-08-30 13:42:02,323 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 20007 transitions. [2023-08-30 13:42:02,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 20007 transitions. [2023-08-30 13:42:02,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:42:02,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 20007 transitions. [2023-08-30 13:42:02,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 800.28) internal successors, (20007), 25 states have internal predecessors, (20007), 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 13:42:02,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 1875.0) internal successors, (48750), 26 states have internal predecessors, (48750), 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 13:42:02,405 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 1875.0) internal successors, (48750), 26 states have internal predecessors, (48750), 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 13:42:02,405 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 302 flow. Second operand 25 states and 20007 transitions. [2023-08-30 13:42:02,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 72 transitions, 578 flow [2023-08-30 13:42:02,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 72 transitions, 502 flow, removed 36 selfloop flow, removed 2 redundant places. [2023-08-30 13:42:02,411 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 440 flow [2023-08-30 13:42:02,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1875, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=440, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2023-08-30 13:42:02,412 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 19 predicate places. [2023-08-30 13:42:02,412 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 440 flow [2023-08-30 13:42:02,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 797.2285714285714) internal successors, (27903), 35 states have internal predecessors, (27903), 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 13:42:02,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:42:02,417 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:42:02,435 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 13:42:02,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:42:02,633 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting whoop_wrapper_pc8736x_gpio_changeErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:42:02,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:42:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1800846887, now seen corresponding path program 4 times [2023-08-30 13:42:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:42:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615362602] [2023-08-30 13:42:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:42:02,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:42:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:42:04,826 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 13:42:04,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:42:04,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615362602] [2023-08-30 13:42:04,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615362602] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:42:04,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671415812] [2023-08-30 13:42:04,827 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 13:42:04,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:42:04,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:42:04,829 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 13:42:04,830 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 13:42:08,114 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 13:42:08,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:42:08,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-30 13:42:08,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:42:09,308 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 13:42:09,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:42:10,629 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 13:42:10,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671415812] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:42:10,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:42:10,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 69 [2023-08-30 13:42:10,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464034792] [2023-08-30 13:42:10,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:42:10,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-08-30 13:42:10,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:42:10,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-08-30 13:42:10,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1202, Invalid=3628, Unknown=0, NotChecked=0, Total=4830 [2023-08-30 13:42:15,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 798 out of 1875 [2023-08-30 13:42:15,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 440 flow. Second operand has 70 states, 70 states have (on average 799.1142857142858) internal successors, (55938), 70 states have internal predecessors, (55938), 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 13:42:15,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:42:15,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 798 of 1875 [2023-08-30 13:42:15,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:44:20,294 WARN L222 SmtUtils]: Spent 1.15m on a formula simplification that was a NOOP. DAG size: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 13:44:22,384 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_external_alloc_~size#1| 4294967296))) (and (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 8) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 14) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 5) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 1) 4294967296) .cse0) (< (mod |c_ULTIMATE.start_external_alloc_~i~0#1| 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 3) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 6) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 2) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 21) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 15) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 16) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 18) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 13) 4294967296) .cse0) (< (mod (+ 19 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 12) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 17) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 20) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 9) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 10) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 4) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 11) 4294967296) .cse0) (< (mod (+ 7 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0))) is different from false [2023-08-30 13:44:24,396 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_external_alloc_~size#1| 4294967296))) (and (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 8) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 14) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 5) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 1) 4294967296) .cse0) (< (mod |c_ULTIMATE.start_external_alloc_~i~0#1| 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 3) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 6) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 2) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 15) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 16) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 18) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 13) 4294967296) .cse0) (< (mod (+ 19 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 12) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 17) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 20) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 9) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 10) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 4) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 11) 4294967296) .cse0) (< (mod (+ 7 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0))) is different from false Killed by 15