/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/minepump_spec4_product08.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:02:58,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:02:58,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:02:58,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:02:58,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:02:58,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:02:58,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:02:58,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:02:58,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:02:58,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:02:58,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:02:58,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:02:58,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:02:58,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:02:58,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:02:58,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:02:58,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:02:58,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:02:58,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:02:58,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:02:58,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:02:58,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:02:58,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:02:58,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:02:58,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:02:58,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:02:58,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:02:58,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:02:58,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:02:58,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:02:58,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:02:58,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:02:58,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:02:58,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:02:58,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:02:58,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:02:58,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:02:58,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:02:58,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:02:58,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:02:58,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:02:58,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 01:02:58,684 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:02:58,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:02:58,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:02:58,685 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:02:58,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:02:58,686 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:02:58,686 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:02:58,686 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:02:58,686 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:02:58,686 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:02:58,687 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:02:58,687 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:02:58,687 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:02:58,687 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:02:58,687 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:02:58,687 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:02:58,687 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:02:58,687 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:02:58,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:02:58,688 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:02:58,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:02:58,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:02:58,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:02:58,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:02:58,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:02:58,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:02:58,689 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:02:58,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:02:58,689 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:02:58,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:02:58,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:02:58,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:02:58,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:02:58,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:02:58,690 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:02:58,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:02:58,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:02:58,690 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:02:58,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:02:58,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:02:58,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:02:58,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:02:58,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:02:58,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:02:58,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:02:58,937 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:02:58,938 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:02:58,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product08.cil.c [2023-04-03 01:03:00,138 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:03:00,428 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:03:00,429 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product08.cil.c [2023-04-03 01:03:00,439 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96889ccb9/bbbd91d7bf2d463c8b72037ff922150d/FLAGa8f9b08ad [2023-04-03 01:03:00,451 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96889ccb9/bbbd91d7bf2d463c8b72037ff922150d [2023-04-03 01:03:00,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:03:00,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:03:00,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:03:00,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:03:00,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:03:00,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:03:00" (1/1) ... [2023-04-03 01:03:00,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ea47b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:03:00, skipping insertion in model container [2023-04-03 01:03:00,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:03:00" (1/1) ... [2023-04-03 01:03:00,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:03:00,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:03:00,658 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product08.cil.c[17389,17402] [2023-04-03 01:03:00,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:03:00,669 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:03:00,707 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product08.cil.c[17389,17402] [2023-04-03 01:03:00,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:03:00,736 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:03:00,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:03:00 WrapperNode [2023-04-03 01:03:00,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:03:00,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:03:00,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:03:00,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:03:00,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:03:00" (1/1) ... [2023-04-03 01:03:00,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:03:00" (1/1) ... [2023-04-03 01:03:00,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:03:00" (1/1) ... [2023-04-03 01:03:00,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:03:00" (1/1) ... [2023-04-03 01:03:00,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:03:00" (1/1) ... [2023-04-03 01:03:00,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:03:00" (1/1) ... [2023-04-03 01:03:00,779 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:03:00" (1/1) ... [2023-04-03 01:03:00,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:03:00" (1/1) ... [2023-04-03 01:03:00,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:03:00,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:03:00,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:03:00,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:03:00,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:03:00" (1/1) ... [2023-04-03 01:03:00,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:03:00,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:03:00,824 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) [2023-04-03 01:03:00,841 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 [2023-04-03 01:03:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:03:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:03:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-03 01:03:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:03:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-03 01:03:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-03 01:03:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-03 01:03:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-03 01:03:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-03 01:03:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-03 01:03:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-03 01:03:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-03 01:03:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-03 01:03:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-03 01:03:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-03 01:03:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-03 01:03:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-03 01:03:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-03 01:03:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:03:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-03 01:03:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-03 01:03:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-03 01:03:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-03 01:03:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-03 01:03:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-03 01:03:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2023-04-03 01:03:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-03 01:03:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-03 01:03:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-03 01:03:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-03 01:03:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-03 01:03:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-03 01:03:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-03 01:03:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-03 01:03:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-03 01:03:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-03 01:03:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-03 01:03:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-03 01:03:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:03:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:03:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:03:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:03:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 01:03:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-03 01:03:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-03 01:03:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-03 01:03:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-03 01:03:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-03 01:03:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-03 01:03:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-03 01:03:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-03 01:03:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-03 01:03:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-03 01:03:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-03 01:03:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-03 01:03:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-03 01:03:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-03 01:03:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-03 01:03:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-03 01:03:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-03 01:03:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-03 01:03:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:03:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 01:03:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 01:03:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-03 01:03:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 01:03:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 01:03:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:03:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 01:03:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-03 01:03:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:03:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-03 01:03:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-03 01:03:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:03:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-03 01:03:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-03 01:03:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-03 01:03:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-03 01:03:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-03 01:03:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2023-04-03 01:03:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-03 01:03:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-03 01:03:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-03 01:03:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-03 01:03:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-03 01:03:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-03 01:03:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-03 01:03:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:03:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:03:00,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:03:00,971 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:03:00,973 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:03:01,480 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:03:01,554 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:03:01,554 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-03 01:03:01,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:03:01 BoogieIcfgContainer [2023-04-03 01:03:01,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:03:01,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:03:01,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:03:01,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:03:01,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:03:00" (1/3) ... [2023-04-03 01:03:01,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e59adf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:03:01, skipping insertion in model container [2023-04-03 01:03:01,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:03:00" (2/3) ... [2023-04-03 01:03:01,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e59adf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:03:01, skipping insertion in model container [2023-04-03 01:03:01,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:03:01" (3/3) ... [2023-04-03 01:03:01,562 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product08.cil.c [2023-04-03 01:03:01,574 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:03:01,575 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:03:01,628 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:03:01,633 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=FINITE_AUTOMATA, 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;@1b3b064e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:03:01,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:03:01,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 72 states have internal predecessors, (76), 43 states have call successors, (43), 26 states have call predecessors, (43), 26 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2023-04-03 01:03:01,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-03 01:03:01,644 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:03:01,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:03:01,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:03:01,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:03:01,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1940902790, now seen corresponding path program 1 times [2023-04-03 01:03:01,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:03:01,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885814394] [2023-04-03 01:03:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:03:01,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:03:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:03:01,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:03:01,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:03:01,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885814394] [2023-04-03 01:03:01,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885814394] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:03:01,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:03:01,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-03 01:03:01,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259980361] [2023-04-03 01:03:01,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:03:01,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-03 01:03:01,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:03:01,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-03 01:03:01,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-03 01:03:01,922 INFO L87 Difference]: Start difference. First operand has 131 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 72 states have internal predecessors, (76), 43 states have call successors, (43), 26 states have call predecessors, (43), 26 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 01:03:01,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:03:01,988 INFO L93 Difference]: Finished difference Result 195 states and 238 transitions. [2023-04-03 01:03:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-03 01:03:01,990 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-04-03 01:03:01,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:03:01,998 INFO L225 Difference]: With dead ends: 195 [2023-04-03 01:03:01,998 INFO L226 Difference]: Without dead ends: 98 [2023-04-03 01:03:02,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-03 01:03:02,004 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 01:03:02,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 01:03:02,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-04-03 01:03:02,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-04-03 01:03:02,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 50 states have (on average 1.24) internal successors, (62), 60 states have internal predecessors, (62), 28 states have call successors, (28), 24 states have call predecessors, (28), 19 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2023-04-03 01:03:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2023-04-03 01:03:02,055 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 42 [2023-04-03 01:03:02,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:03:02,056 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2023-04-03 01:03:02,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 01:03:02,057 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2023-04-03 01:03:02,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-03 01:03:02,061 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:03:02,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:03:02,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:03:02,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:03:02,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:03:02,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1426869940, now seen corresponding path program 1 times [2023-04-03 01:03:02,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:03:02,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156230271] [2023-04-03 01:03:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:03:02,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:03:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:03:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:03:02,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:03:02,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156230271] [2023-04-03 01:03:02,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156230271] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:03:02,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:03:02,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 01:03:02,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538190656] [2023-04-03 01:03:02,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:03:02,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:03:02,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:03:02,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:03:02,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 01:03:02,194 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 01:03:02,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:03:02,231 INFO L93 Difference]: Finished difference Result 143 states and 163 transitions. [2023-04-03 01:03:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:03:02,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-04-03 01:03:02,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:03:02,233 INFO L225 Difference]: With dead ends: 143 [2023-04-03 01:03:02,233 INFO L226 Difference]: Without dead ends: 90 [2023-04-03 01:03:02,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 01:03:02,234 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 11 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 01:03:02,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 161 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 01:03:02,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-04-03 01:03:02,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-04-03 01:03:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 55 states have internal predecessors, (56), 25 states have call successors, (25), 23 states have call predecessors, (25), 19 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2023-04-03 01:03:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2023-04-03 01:03:02,242 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 43 [2023-04-03 01:03:02,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:03:02,243 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2023-04-03 01:03:02,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 01:03:02,243 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2023-04-03 01:03:02,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-03 01:03:02,244 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:03:02,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:03:02,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 01:03:02,244 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:03:02,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:03:02,245 INFO L85 PathProgramCache]: Analyzing trace with hash -909583024, now seen corresponding path program 1 times [2023-04-03 01:03:02,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:03:02,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088978422] [2023-04-03 01:03:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:03:02,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:03:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:03:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:03:02,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:03:02,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088978422] [2023-04-03 01:03:02,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088978422] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:03:02,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:03:02,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 01:03:02,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263515033] [2023-04-03 01:03:02,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:03:02,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 01:03:02,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:03:02,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 01:03:02,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:03:02,422 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-03 01:03:02,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:03:02,637 INFO L93 Difference]: Finished difference Result 271 states and 322 transitions. [2023-04-03 01:03:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:03:02,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 47 [2023-04-03 01:03:02,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:03:02,639 INFO L225 Difference]: With dead ends: 271 [2023-04-03 01:03:02,639 INFO L226 Difference]: Without dead ends: 203 [2023-04-03 01:03:02,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:03:02,641 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 155 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:03:02,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 450 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 01:03:02,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-04-03 01:03:02,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 191. [2023-04-03 01:03:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 121 states have internal predecessors, (131), 49 states have call successors, (49), 45 states have call predecessors, (49), 39 states have return successors, (46), 37 states have call predecessors, (46), 45 states have call successors, (46) [2023-04-03 01:03:02,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 226 transitions. [2023-04-03 01:03:02,660 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 226 transitions. Word has length 47 [2023-04-03 01:03:02,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:03:02,660 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 226 transitions. [2023-04-03 01:03:02,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-03 01:03:02,660 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 226 transitions. [2023-04-03 01:03:02,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-03 01:03:02,662 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:03:02,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:03:02,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 01:03:02,662 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:03:02,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:03:02,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1867758761, now seen corresponding path program 1 times [2023-04-03 01:03:02,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:03:02,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210229417] [2023-04-03 01:03:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:03:02,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:03:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:03:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:03:02,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:03:02,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210229417] [2023-04-03 01:03:02,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210229417] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:03:02,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:03:02,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 01:03:02,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564561398] [2023-04-03 01:03:02,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:03:02,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 01:03:02,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:03:02,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 01:03:02,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:03:02,810 INFO L87 Difference]: Start difference. First operand 191 states and 226 transitions. Second operand has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-03 01:03:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:03:03,132 INFO L93 Difference]: Finished difference Result 659 states and 826 transitions. [2023-04-03 01:03:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:03:03,133 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 51 [2023-04-03 01:03:03,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:03:03,136 INFO L225 Difference]: With dead ends: 659 [2023-04-03 01:03:03,136 INFO L226 Difference]: Without dead ends: 490 [2023-04-03 01:03:03,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-04-03 01:03:03,138 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 135 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:03:03,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 580 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 01:03:03,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-04-03 01:03:03,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 466. [2023-04-03 01:03:03,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 259 states have (on average 1.2895752895752897) internal successors, (334), 305 states have internal predecessors, (334), 114 states have call successors, (114), 102 states have call predecessors, (114), 92 states have return successors, (121), 86 states have call predecessors, (121), 110 states have call successors, (121) [2023-04-03 01:03:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 569 transitions. [2023-04-03 01:03:03,173 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 569 transitions. Word has length 51 [2023-04-03 01:03:03,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:03:03,174 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 569 transitions. [2023-04-03 01:03:03,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-03 01:03:03,174 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 569 transitions. [2023-04-03 01:03:03,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-03 01:03:03,176 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:03:03,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:03:03,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 01:03:03,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:03:03,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:03:03,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1226242192, now seen corresponding path program 1 times [2023-04-03 01:03:03,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:03:03,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181284288] [2023-04-03 01:03:03,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:03:03,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:03:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:03:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:03:03,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:03:03,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181284288] [2023-04-03 01:03:03,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181284288] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:03:03,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:03:03,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 01:03:03,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767692059] [2023-04-03 01:03:03,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:03:03,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 01:03:03,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:03:03,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 01:03:03,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 01:03:03,252 INFO L87 Difference]: Start difference. First operand 466 states and 569 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-03 01:03:03,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:03:03,374 INFO L93 Difference]: Finished difference Result 808 states and 1021 transitions. [2023-04-03 01:03:03,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 01:03:03,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 54 [2023-04-03 01:03:03,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:03:03,378 INFO L225 Difference]: With dead ends: 808 [2023-04-03 01:03:03,378 INFO L226 Difference]: Without dead ends: 364 [2023-04-03 01:03:03,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-03 01:03:03,380 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 74 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:03:03,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 38 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:03:03,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-04-03 01:03:03,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 352. [2023-04-03 01:03:03,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 211 states have (on average 1.2132701421800949) internal successors, (256), 233 states have internal predecessors, (256), 72 states have call successors, (72), 72 states have call predecessors, (72), 68 states have return successors, (71), 68 states have call predecessors, (71), 68 states have call successors, (71) [2023-04-03 01:03:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 399 transitions. [2023-04-03 01:03:03,407 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 399 transitions. Word has length 54 [2023-04-03 01:03:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:03:03,407 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 399 transitions. [2023-04-03 01:03:03,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-03 01:03:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 399 transitions. [2023-04-03 01:03:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-03 01:03:03,409 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:03:03,409 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:03:03,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 01:03:03,410 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:03:03,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:03:03,410 INFO L85 PathProgramCache]: Analyzing trace with hash -478893927, now seen corresponding path program 1 times [2023-04-03 01:03:03,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:03:03,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737329026] [2023-04-03 01:03:03,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:03:03,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:03:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:03:03,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-03 01:03:03,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:03:03,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737329026] [2023-04-03 01:03:03,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737329026] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:03:03,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135547736] [2023-04-03 01:03:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:03:03,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:03:03,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:03:03,588 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) [2023-04-03 01:03:03,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 01:03:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:03:03,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-03 01:03:03,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:03:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-03 01:03:04,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:03:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:03:04,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135547736] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 01:03:04,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [809203496] [2023-04-03 01:03:04,516 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2023-04-03 01:03:04,516 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 01:03:04,522 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 01:03:04,525 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 01:03:04,526 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 01:03:04,726 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-03 01:03:04,769 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-03 01:03:04,960 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-03 01:03:04,975 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-03 01:03:04,978 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-03 01:03:04,981 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-04-03 01:03:09,525 INFO L197 IcfgInterpreter]: Interpreting procedure stopSystem with input of size 47 for LOIs [2023-04-03 01:03:09,549 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 46 for LOIs [2023-04-03 01:03:09,572 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 32 for LOIs [2023-04-03 01:03:09,683 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 22 for LOIs [2023-04-03 01:03:09,712 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 24 for LOIs [2023-04-03 01:03:09,714 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 22 for LOIs [2023-04-03 01:03:09,715 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-04-03 01:03:09,717 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-04-03 01:03:09,718 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-03 01:03:12,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [809203496] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:03:12,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-03 01:03:12,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [7, 14, 12] total 62 [2023-04-03 01:03:12,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686485674] [2023-04-03 01:03:12,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:03:12,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-04-03 01:03:12,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:03:12,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-04-03 01:03:12,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=3398, Unknown=0, NotChecked=0, Total=3782 [2023-04-03 01:03:12,530 INFO L87 Difference]: Start difference. First operand 352 states and 399 transitions. Second operand has 36 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 28 states have internal predecessors, (34), 11 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-03 01:03:24,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:03:24,854 INFO L93 Difference]: Finished difference Result 1159 states and 1399 transitions. [2023-04-03 01:03:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-04-03 01:03:24,854 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 28 states have internal predecessors, (34), 11 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) Word has length 79 [2023-04-03 01:03:24,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:03:24,857 INFO L225 Difference]: With dead ends: 1159 [2023-04-03 01:03:24,857 INFO L226 Difference]: Without dead ends: 829 [2023-04-03 01:03:24,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 188 SyntacticMatches, 2 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5575 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=2403, Invalid=15957, Unknown=0, NotChecked=0, Total=18360 [2023-04-03 01:03:24,862 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 835 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 4461 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 5112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 4461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-03 01:03:24,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 539 Invalid, 5112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 4461 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-03 01:03:24,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-04-03 01:03:24,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 678. [2023-04-03 01:03:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 424 states have (on average 1.2169811320754718) internal successors, (516), 463 states have internal predecessors, (516), 130 states have call successors, (130), 127 states have call predecessors, (130), 123 states have return successors, (131), 124 states have call predecessors, (131), 126 states have call successors, (131) [2023-04-03 01:03:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 777 transitions. [2023-04-03 01:03:24,926 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 777 transitions. Word has length 79 [2023-04-03 01:03:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:03:24,927 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 777 transitions. [2023-04-03 01:03:24,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 28 states have internal predecessors, (34), 11 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-03 01:03:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 777 transitions. [2023-04-03 01:03:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 01:03:24,928 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:03:24,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:03:24,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-03 01:03:25,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-03 01:03:25,136 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:03:25,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:03:25,136 INFO L85 PathProgramCache]: Analyzing trace with hash 918883530, now seen corresponding path program 1 times [2023-04-03 01:03:25,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:03:25,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225121614] [2023-04-03 01:03:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:03:25,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:03:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:03:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-03 01:03:25,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:03:25,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225121614] [2023-04-03 01:03:25,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225121614] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:03:25,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518341699] [2023-04-03 01:03:25,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:03:25,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:03:25,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:03:25,282 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) [2023-04-03 01:03:25,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-03 01:03:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:03:25,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-03 01:03:25,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:03:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-03 01:03:25,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:03:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:03:26,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518341699] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 01:03:26,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1277821568] [2023-04-03 01:03:26,020 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2023-04-03 01:03:26,020 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 01:03:26,020 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 01:03:26,021 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 01:03:26,021 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 01:03:26,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-03 01:03:26,097 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-03 01:03:26,162 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-03 01:03:26,168 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-03 01:03:26,170 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-03 01:03:26,171 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-04-03 01:03:32,738 INFO L197 IcfgInterpreter]: Interpreting procedure stopSystem with input of size 63 for LOIs [2023-04-03 01:03:32,748 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 66 for LOIs [2023-04-03 01:03:32,755 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 41 for LOIs [2023-04-03 01:03:32,845 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 26 for LOIs [2023-04-03 01:03:32,891 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 28 for LOIs [2023-04-03 01:03:32,893 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 26 for LOIs [2023-04-03 01:03:32,895 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 39 for LOIs [2023-04-03 01:03:32,899 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-04-03 01:03:32,901 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-04-03 01:03:32,902 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-03 01:03:36,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1277821568] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:03:36,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-03 01:03:36,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [7, 14, 12] total 65 [2023-04-03 01:03:36,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677047141] [2023-04-03 01:03:36,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:03:36,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-04-03 01:03:36,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:03:36,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-04-03 01:03:36,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=3763, Unknown=0, NotChecked=0, Total=4160 [2023-04-03 01:03:36,409 INFO L87 Difference]: Start difference. First operand 678 states and 777 transitions. Second operand has 39 states, 25 states have (on average 1.44) internal successors, (36), 30 states have internal predecessors, (36), 12 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2023-04-03 01:04:19,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:04:19,153 INFO L93 Difference]: Finished difference Result 2735 states and 3966 transitions. [2023-04-03 01:04:19,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2023-04-03 01:04:19,153 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 25 states have (on average 1.44) internal successors, (36), 30 states have internal predecessors, (36), 12 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) Word has length 82 [2023-04-03 01:04:19,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:04:19,162 INFO L225 Difference]: With dead ends: 2735 [2023-04-03 01:04:19,162 INFO L226 Difference]: Without dead ends: 2405 [2023-04-03 01:04:19,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32053 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=7623, Invalid=76187, Unknown=0, NotChecked=0, Total=83810 [2023-04-03 01:04:19,189 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 2232 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 11819 mSolverCounterSat, 1778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2237 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 13597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1778 IncrementalHoareTripleChecker+Valid, 11819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-03 01:04:19,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2237 Valid, 2108 Invalid, 13597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1778 Valid, 11819 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-03 01:04:19,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2023-04-03 01:04:19,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 959. [2023-04-03 01:04:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 602 states have (on average 1.2491694352159468) internal successors, (752), 684 states have internal predecessors, (752), 199 states have call successors, (199), 161 states have call predecessors, (199), 157 states have return successors, (204), 183 states have call predecessors, (204), 195 states have call successors, (204) [2023-04-03 01:04:19,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1155 transitions. [2023-04-03 01:04:19,363 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1155 transitions. Word has length 82 [2023-04-03 01:04:19,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:04:19,364 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1155 transitions. [2023-04-03 01:04:19,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 25 states have (on average 1.44) internal successors, (36), 30 states have internal predecessors, (36), 12 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2023-04-03 01:04:19,364 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1155 transitions. [2023-04-03 01:04:19,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-03 01:04:19,371 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:04:19,371 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:04:19,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-03 01:04:19,576 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,SelfDestructingSolverStorable6 [2023-04-03 01:04:19,576 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:04:19,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:04:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash -371910502, now seen corresponding path program 1 times [2023-04-03 01:04:19,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:04:19,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032535358] [2023-04-03 01:04:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:04:19,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:04:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:04:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 01:04:19,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:04:19,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032535358] [2023-04-03 01:04:19,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032535358] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:04:19,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629023415] [2023-04-03 01:04:19,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:04:19,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:04:19,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:04:19,883 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) [2023-04-03 01:04:19,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-03 01:04:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:04:19,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-03 01:04:19,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:04:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-03 01:04:20,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:04:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:04:20,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629023415] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 01:04:20,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [757318710] [2023-04-03 01:04:20,441 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2023-04-03 01:04:20,441 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 01:04:20,441 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 01:04:20,441 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 01:04:20,441 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 01:04:20,500 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-03 01:04:20,516 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-03 01:04:20,577 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-03 01:04:20,582 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-03 01:04:20,584 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-03 01:04:20,585 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-04-03 01:04:26,567 INFO L197 IcfgInterpreter]: Interpreting procedure stopSystem with input of size 40 for LOIs [2023-04-03 01:04:26,571 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 41 for LOIs [2023-04-03 01:04:26,575 INFO L197 IcfgInterpreter]: Interpreting procedure startSystem with input of size 40 for LOIs [2023-04-03 01:04:26,579 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 33 for LOIs [2023-04-03 01:04:26,783 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 24 for LOIs [2023-04-03 01:04:26,806 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 26 for LOIs [2023-04-03 01:04:26,808 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 24 for LOIs [2023-04-03 01:04:26,810 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-04-03 01:04:26,811 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-04-03 01:04:26,812 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 32 for LOIs [2023-04-03 01:04:26,856 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 30 for LOIs [2023-04-03 01:04:26,859 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-03 01:04:29,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [757318710] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:04:29,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-03 01:04:29,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [15, 14, 12] total 66 [2023-04-03 01:04:29,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629220190] [2023-04-03 01:04:29,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:04:29,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-04-03 01:04:29,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:04:29,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-04-03 01:04:29,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=3848, Unknown=0, NotChecked=0, Total=4290 [2023-04-03 01:04:29,441 INFO L87 Difference]: Start difference. First operand 959 states and 1155 transitions. Second operand has 41 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 31 states have internal predecessors, (40), 14 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-04-03 01:04:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:04:40,190 INFO L93 Difference]: Finished difference Result 1922 states and 2405 transitions. [2023-04-03 01:04:40,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-04-03 01:04:40,191 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 31 states have internal predecessors, (40), 14 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) Word has length 89 [2023-04-03 01:04:40,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:04:40,202 INFO L225 Difference]: With dead ends: 1922 [2023-04-03 01:04:40,202 INFO L226 Difference]: Without dead ends: 1361 [2023-04-03 01:04:40,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 219 SyntacticMatches, 6 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7315 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=3067, Invalid=18689, Unknown=0, NotChecked=0, Total=21756 [2023-04-03 01:04:40,206 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 1160 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 4172 mSolverCounterSat, 892 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 5064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 892 IncrementalHoareTripleChecker+Valid, 4172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-03 01:04:40,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 324 Invalid, 5064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [892 Valid, 4172 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-03 01:04:40,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2023-04-03 01:04:40,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1105. [2023-04-03 01:04:40,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 696 states have (on average 1.2399425287356323) internal successors, (863), 787 states have internal predecessors, (863), 225 states have call successors, (225), 187 states have call predecessors, (225), 183 states have return successors, (228), 210 states have call predecessors, (228), 221 states have call successors, (228) [2023-04-03 01:04:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1316 transitions. [2023-04-03 01:04:40,372 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1316 transitions. Word has length 89 [2023-04-03 01:04:40,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:04:40,373 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1316 transitions. [2023-04-03 01:04:40,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 31 states have internal predecessors, (40), 14 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-04-03 01:04:40,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1316 transitions. [2023-04-03 01:04:40,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-03 01:04:40,376 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:04:40,376 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:04:40,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-03 01:04:40,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:04:40,580 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:04:40,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:04:40,581 INFO L85 PathProgramCache]: Analyzing trace with hash 784249739, now seen corresponding path program 1 times [2023-04-03 01:04:40,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:04:40,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748039300] [2023-04-03 01:04:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:04:40,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:04:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:04:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 01:04:40,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:04:40,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748039300] [2023-04-03 01:04:40,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748039300] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:04:40,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923264835] [2023-04-03 01:04:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:04:40,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:04:40,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:04:40,878 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) [2023-04-03 01:04:40,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-03 01:04:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:04:40,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-03 01:04:40,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:04:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-03 01:04:41,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:04:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:04:41,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923264835] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 01:04:41,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1112781428] [2023-04-03 01:04:41,454 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-04-03 01:04:41,454 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 01:04:41,455 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 01:04:41,455 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 01:04:41,455 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 01:04:41,520 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-03 01:04:41,542 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-03 01:04:41,615 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-03 01:04:41,620 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-03 01:04:41,621 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-03 01:04:41,622 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs