/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 EqDomain -i ../sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:02:00,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:02:00,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:02:00,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:02:00,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:02:00,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:02:00,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:02:00,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:02:00,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:02:00,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:02:00,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:02:00,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:02:00,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:02:00,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:02:00,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:02:00,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:02:00,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:02:00,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:02:00,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:02:00,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:02:00,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:02:00,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:02:00,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:02:00,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:02:00,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:02:00,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:02:00,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:02:00,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:02:00,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:02:00,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:02:00,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:02:00,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:02:00,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:02:00,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:02:00,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:02:00,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:02:00,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:02:00,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:02:00,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:02:00,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:02:00,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:02:00,683 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 [2023-04-01 12:02:00,714 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:02:00,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:02:00,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:02:00,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:02:00,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:02:00,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:02:00,715 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:02:00,715 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:02:00,715 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:02:00,715 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:02:00,715 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:02:00,715 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:02:00,715 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:02:00,715 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:02:00,716 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:02:00,716 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:02:00,716 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:02:00,716 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:02:00,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:02:00,716 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:02:00,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:02:00,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:02:00,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:02:00,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:02:00,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:02:00,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:02:00,717 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:02:00,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:02:00,717 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:02:00,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:02:00,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:02:00,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:02:00,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:02:00,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:02:00,718 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:02:00,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:02:00,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:02:00,718 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:02:00,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:02:00,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:02:00,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:02:00,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:02:00,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:02:00,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:02:00,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:02:00,943 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:02:00,943 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:02:00,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c [2023-04-01 12:02:02,079 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:02:02,273 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:02:02,274 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c [2023-04-01 12:02:02,285 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89bb32c48/c9ba68d2a9ba4ddebc84dfe4bd757e3f/FLAGbe359d93a [2023-04-01 12:02:02,308 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89bb32c48/c9ba68d2a9ba4ddebc84dfe4bd757e3f [2023-04-01 12:02:02,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:02:02,312 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:02:02,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:02:02,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:02:02,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:02:02,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:02:02" (1/1) ... [2023-04-01 12:02:02,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122f159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:02, skipping insertion in model container [2023-04-01 12:02:02,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:02:02" (1/1) ... [2023-04-01 12:02:02,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:02:02,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:02:02,629 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_spec2_product50.cil.c[18939,18952] [2023-04-01 12:02:02,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:02:02,642 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:02:02,710 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_spec2_product50.cil.c[18939,18952] [2023-04-01 12:02:02,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:02:02,732 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:02:02,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:02 WrapperNode [2023-04-01 12:02:02,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:02:02,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:02:02,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:02:02,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:02:02,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:02" (1/1) ... [2023-04-01 12:02:02,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:02" (1/1) ... [2023-04-01 12:02:02,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:02" (1/1) ... [2023-04-01 12:02:02,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:02" (1/1) ... [2023-04-01 12:02:02,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:02" (1/1) ... [2023-04-01 12:02:02,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:02" (1/1) ... [2023-04-01 12:02:02,783 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:02" (1/1) ... [2023-04-01 12:02:02,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:02" (1/1) ... [2023-04-01 12:02:02,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:02:02,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:02:02,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:02:02,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:02:02,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:02" (1/1) ... [2023-04-01 12:02:02,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:02:02,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:02:02,831 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) [2023-04-01 12:02:02,847 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 [2023-04-01 12:02:02,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:02:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:02:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:02:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:02:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:02:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:02:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:02:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:02:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:02:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:02:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:02:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:02:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:02:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2023-04-01 12:02:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2023-04-01 12:02:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:02:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:02:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:02:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:02:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:02:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:02:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 12:02:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-01 12:02:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:02:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:02:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 12:02:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:02:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:02:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:02:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:02:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:02:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:02:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 12:02:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-01 12:02:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-01 12:02:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:02:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:02:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:02:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:02:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:02:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:02:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:02:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:02:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:02:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:02:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:02:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:02:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:02:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:02:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:02:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:02:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:02:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:02:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:02:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:02:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:02:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:02:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:02:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:02:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:02:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2023-04-01 12:02:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:02:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:02:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:02:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:02:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:02:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:02:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2023-04-01 12:02:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:02:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:02:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:02:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 12:02:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-01 12:02:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:02:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:02:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-01 12:02:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:02:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:02:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 12:02:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 12:02:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-01 12:02:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:02:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:02:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:02:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:02:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:02:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:02:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:02:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:02:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:02:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:02:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:02:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:02:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:02:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:02:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:02:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:02:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:02:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:02:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:02:03,013 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:02:03,016 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:02:03,606 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:02:03,765 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:02:03,765 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:02:03,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:02:03 BoogieIcfgContainer [2023-04-01 12:02:03,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:02:03,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:02:03,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:02:03,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:02:03,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:02:02" (1/3) ... [2023-04-01 12:02:03,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9f9354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:02:03, skipping insertion in model container [2023-04-01 12:02:03,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:02" (2/3) ... [2023-04-01 12:02:03,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9f9354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:02:03, skipping insertion in model container [2023-04-01 12:02:03,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:02:03" (3/3) ... [2023-04-01 12:02:03,776 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2023-04-01 12:02:03,792 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:02:03,792 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:02:03,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:02:03,844 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;@41d56e6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:02:03,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:02:03,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 81 states have internal predecessors, (86), 47 states have call successors, (47), 30 states have call predecessors, (47), 30 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2023-04-01 12:02:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-01 12:02:03,859 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:03,860 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] [2023-04-01 12:02:03,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:03,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:03,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1573487955, now seen corresponding path program 1 times [2023-04-01 12:02:03,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:03,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938269201] [2023-04-01 12:02:03,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:03,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:04,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:04,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938269201] [2023-04-01 12:02:04,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938269201] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:04,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:02:04,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:02:04,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811744282] [2023-04-01 12:02:04,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:04,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:02:04,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:04,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:02:04,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:02:04,133 INFO L87 Difference]: Start difference. First operand has 149 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 81 states have internal predecessors, (86), 47 states have call successors, (47), 30 states have call predecessors, (47), 30 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 12:02:04,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:04,241 INFO L93 Difference]: Finished difference Result 224 states and 269 transitions. [2023-04-01 12:02:04,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:02:04,258 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 46 [2023-04-01 12:02:04,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:04,268 INFO L225 Difference]: With dead ends: 224 [2023-04-01 12:02:04,268 INFO L226 Difference]: Without dead ends: 114 [2023-04-01 12:02:04,272 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 [2023-04-01 12:02:04,278 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:04,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:02:04,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-04-01 12:02:04,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-04-01 12:02:04,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 68 states have internal predecessors, (71), 32 states have call successors, (32), 28 states have call predecessors, (32), 23 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-01 12:02:04,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2023-04-01 12:02:04,328 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 46 [2023-04-01 12:02:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:04,329 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2023-04-01 12:02:04,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 12:02:04,329 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2023-04-01 12:02:04,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-01 12:02:04,331 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:04,331 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] [2023-04-01 12:02:04,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:02:04,332 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:04,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash -341509956, now seen corresponding path program 1 times [2023-04-01 12:02:04,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:04,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778043118] [2023-04-01 12:02:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:04,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:04,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:04,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778043118] [2023-04-01 12:02:04,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778043118] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:04,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:02:04,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:02:04,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415116548] [2023-04-01 12:02:04,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:04,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:02:04,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:04,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:02:04,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:02:04,444 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 12:02:04,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:04,481 INFO L93 Difference]: Finished difference Result 178 states and 203 transitions. [2023-04-01 12:02:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:02:04,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2023-04-01 12:02:04,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:04,483 INFO L225 Difference]: With dead ends: 178 [2023-04-01 12:02:04,483 INFO L226 Difference]: Without dead ends: 106 [2023-04-01 12:02:04,483 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 [2023-04-01 12:02:04,484 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 9 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:04,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 191 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:02:04,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-04-01 12:02:04,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-04-01 12:02:04,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 63 states have internal predecessors, (65), 29 states have call successors, (29), 27 states have call predecessors, (29), 23 states have return successors, (25), 21 states have call predecessors, (25), 25 states have call successors, (25) [2023-04-01 12:02:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2023-04-01 12:02:04,495 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 47 [2023-04-01 12:02:04,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:04,495 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2023-04-01 12:02:04,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 12:02:04,496 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2023-04-01 12:02:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-04-01 12:02:04,497 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:04,497 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] [2023-04-01 12:02:04,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:02:04,498 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:04,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:04,498 INFO L85 PathProgramCache]: Analyzing trace with hash 840546823, now seen corresponding path program 1 times [2023-04-01 12:02:04,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:04,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465189434] [2023-04-01 12:02:04,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:04,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:04,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:04,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:04,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465189434] [2023-04-01 12:02:04,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465189434] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:04,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:02:04,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:02:04,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064532603] [2023-04-01 12:02:04,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:04,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:02:04,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:04,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:02:04,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:02:04,684 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 12:02:04,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:04,984 INFO L93 Difference]: Finished difference Result 187 states and 214 transitions. [2023-04-01 12:02:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 12:02:04,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 50 [2023-04-01 12:02:04,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:04,991 INFO L225 Difference]: With dead ends: 187 [2023-04-01 12:02:04,991 INFO L226 Difference]: Without dead ends: 106 [2023-04-01 12:02:04,997 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 [2023-04-01 12:02:04,998 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 108 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:04,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 284 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:02:05,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-04-01 12:02:05,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-04-01 12:02:05,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 62 states have internal predecessors, (64), 29 states have call successors, (29), 27 states have call predecessors, (29), 23 states have return successors, (25), 21 states have call predecessors, (25), 25 states have call successors, (25) [2023-04-01 12:02:05,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2023-04-01 12:02:05,017 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 50 [2023-04-01 12:02:05,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:05,020 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2023-04-01 12:02:05,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 12:02:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2023-04-01 12:02:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-01 12:02:05,031 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:05,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:02:05,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:02:05,031 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:05,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:05,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2068632284, now seen corresponding path program 1 times [2023-04-01 12:02:05,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:05,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119788077] [2023-04-01 12:02:05,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:05,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:05,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:05,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119788077] [2023-04-01 12:02:05,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119788077] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:05,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:02:05,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:02:05,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121120652] [2023-04-01 12:02:05,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:05,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:02:05,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:05,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:02:05,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:02:05,295 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 12:02:05,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:05,634 INFO L93 Difference]: Finished difference Result 277 states and 327 transitions. [2023-04-01 12:02:05,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:02:05,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 5 states have call successors, (11) Word has length 63 [2023-04-01 12:02:05,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:05,642 INFO L225 Difference]: With dead ends: 277 [2023-04-01 12:02:05,643 INFO L226 Difference]: Without dead ends: 196 [2023-04-01 12:02:05,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:02:05,650 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 144 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:05,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 149 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:02:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-04-01 12:02:05,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 179. [2023-04-01 12:02:05,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 96 states have (on average 1.1875) internal successors, (114), 105 states have internal predecessors, (114), 41 states have call successors, (41), 40 states have call predecessors, (41), 41 states have return successors, (44), 40 states have call predecessors, (44), 37 states have call successors, (44) [2023-04-01 12:02:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2023-04-01 12:02:05,693 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 63 [2023-04-01 12:02:05,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:05,694 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2023-04-01 12:02:05,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 12:02:05,694 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2023-04-01 12:02:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-01 12:02:05,696 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:05,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:02:05,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:02:05,697 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:05,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:05,697 INFO L85 PathProgramCache]: Analyzing trace with hash -422432087, now seen corresponding path program 1 times [2023-04-01 12:02:05,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:05,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886794949] [2023-04-01 12:02:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:05,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:05,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:05,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886794949] [2023-04-01 12:02:05,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886794949] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:05,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:02:05,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:02:05,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108879417] [2023-04-01 12:02:05,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:05,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:02:05,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:05,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:02:05,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:02:05,838 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-01 12:02:05,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:05,982 INFO L93 Difference]: Finished difference Result 470 states and 538 transitions. [2023-04-01 12:02:05,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 12:02:05,983 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 72 [2023-04-01 12:02:05,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:05,985 INFO L225 Difference]: With dead ends: 470 [2023-04-01 12:02:05,986 INFO L226 Difference]: Without dead ends: 316 [2023-04-01 12:02:05,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:02:05,987 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 78 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:05,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 423 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:02:05,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-04-01 12:02:06,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 306. [2023-04-01 12:02:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 167 states have (on average 1.1616766467065869) internal successors, (194), 182 states have internal predecessors, (194), 67 states have call successors, (67), 65 states have call predecessors, (67), 71 states have return successors, (77), 69 states have call predecessors, (77), 63 states have call successors, (77) [2023-04-01 12:02:06,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 338 transitions. [2023-04-01 12:02:06,020 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 338 transitions. Word has length 72 [2023-04-01 12:02:06,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:06,020 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 338 transitions. [2023-04-01 12:02:06,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-01 12:02:06,021 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 338 transitions. [2023-04-01 12:02:06,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-01 12:02:06,022 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:06,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:02:06,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:02:06,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:06,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:06,023 INFO L85 PathProgramCache]: Analyzing trace with hash 661783035, now seen corresponding path program 1 times [2023-04-01 12:02:06,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:06,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109860310] [2023-04-01 12:02:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:06,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:06,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:06,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109860310] [2023-04-01 12:02:06,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109860310] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:06,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:02:06,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:02:06,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132445354] [2023-04-01 12:02:06,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:06,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:02:06,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:06,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:02:06,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:02:06,121 INFO L87 Difference]: Start difference. First operand 306 states and 338 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-04-01 12:02:06,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:06,178 INFO L93 Difference]: Finished difference Result 460 states and 532 transitions. [2023-04-01 12:02:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:02:06,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 75 [2023-04-01 12:02:06,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:06,184 INFO L225 Difference]: With dead ends: 460 [2023-04-01 12:02:06,185 INFO L226 Difference]: Without dead ends: 457 [2023-04-01 12:02:06,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:02:06,187 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 88 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:06,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 176 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:02:06,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-04-01 12:02:06,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2023-04-01 12:02:06,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 252 states have (on average 1.1666666666666667) internal successors, (294), 275 states have internal predecessors, (294), 98 states have call successors, (98), 95 states have call predecessors, (98), 106 states have return successors, (135), 103 states have call predecessors, (135), 94 states have call successors, (135) [2023-04-01 12:02:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 527 transitions. [2023-04-01 12:02:06,246 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 527 transitions. Word has length 75 [2023-04-01 12:02:06,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:06,246 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 527 transitions. [2023-04-01 12:02:06,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-04-01 12:02:06,247 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 527 transitions. [2023-04-01 12:02:06,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-01 12:02:06,251 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:06,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 12:02:06,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:02:06,251 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:06,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:06,251 INFO L85 PathProgramCache]: Analyzing trace with hash -290320110, now seen corresponding path program 1 times [2023-04-01 12:02:06,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:06,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150506341] [2023-04-01 12:02:06,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:06,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-01 12:02:06,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:06,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150506341] [2023-04-01 12:02:06,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150506341] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:02:06,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476325442] [2023-04-01 12:02:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:06,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:02:06,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:02:06,515 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) [2023-04-01 12:02:06,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 12:02:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:06,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 12:02:06,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:02:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 12:02:06,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 12:02:06,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476325442] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:06,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 12:02:06,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2023-04-01 12:02:06,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299654563] [2023-04-01 12:02:06,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:06,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:02:06,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:06,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:02:06,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:02:06,777 INFO L87 Difference]: Start difference. First operand 457 states and 527 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-01 12:02:06,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:06,919 INFO L93 Difference]: Finished difference Result 742 states and 870 transitions. [2023-04-01 12:02:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:02:06,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 124 [2023-04-01 12:02:06,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:06,922 INFO L225 Difference]: With dead ends: 742 [2023-04-01 12:02:06,922 INFO L226 Difference]: Without dead ends: 437 [2023-04-01 12:02:06,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-04-01 12:02:06,924 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 62 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:06,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 486 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:02:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-04-01 12:02:06,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 418. [2023-04-01 12:02:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 229 states have (on average 1.1528384279475983) internal successors, (264), 250 states have internal predecessors, (264), 90 states have call successors, (90), 88 states have call predecessors, (90), 98 states have return successors, (115), 93 states have call predecessors, (115), 86 states have call successors, (115) [2023-04-01 12:02:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 469 transitions. [2023-04-01 12:02:06,959 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 469 transitions. Word has length 124 [2023-04-01 12:02:06,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:06,959 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 469 transitions. [2023-04-01 12:02:06,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-01 12:02:06,959 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 469 transitions. [2023-04-01 12:02:06,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-01 12:02:06,961 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:06,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 12:02:06,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 12:02:07,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:02:07,169 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:07,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:07,169 INFO L85 PathProgramCache]: Analyzing trace with hash 287365010, now seen corresponding path program 1 times [2023-04-01 12:02:07,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:07,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160049908] [2023-04-01 12:02:07,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:07,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 12:02:07,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:07,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160049908] [2023-04-01 12:02:07,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160049908] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:02:07,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505127104] [2023-04-01 12:02:07,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:07,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:02:07,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:02:07,330 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) [2023-04-01 12:02:07,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 12:02:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:07,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 12:02:07,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:02:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:07,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 12:02:07,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505127104] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:07,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 12:02:07,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 12:02:07,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862214289] [2023-04-01 12:02:07,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:07,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:02:07,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:07,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:02:07,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:02:07,533 INFO L87 Difference]: Start difference. First operand 418 states and 469 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-04-01 12:02:07,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:07,587 INFO L93 Difference]: Finished difference Result 768 states and 864 transitions. [2023-04-01 12:02:07,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:02:07,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 124 [2023-04-01 12:02:07,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:07,590 INFO L225 Difference]: With dead ends: 768 [2023-04-01 12:02:07,590 INFO L226 Difference]: Without dead ends: 375 [2023-04-01 12:02:07,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:02:07,592 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 43 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:07,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 197 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:02:07,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-04-01 12:02:07,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2023-04-01 12:02:07,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 205 states have (on average 1.1365853658536584) internal successors, (233), 225 states have internal predecessors, (233), 81 states have call successors, (81), 79 states have call predecessors, (81), 88 states have return successors, (95), 84 states have call predecessors, (95), 77 states have call successors, (95) [2023-04-01 12:02:07,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 409 transitions. [2023-04-01 12:02:07,618 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 409 transitions. Word has length 124 [2023-04-01 12:02:07,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:07,618 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 409 transitions. [2023-04-01 12:02:07,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-04-01 12:02:07,619 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 409 transitions. [2023-04-01 12:02:07,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-01 12:02:07,620 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:07,621 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 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] [2023-04-01 12:02:07,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 12:02:07,828 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,SelfDestructingSolverStorable7 [2023-04-01 12:02:07,828 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:07,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:07,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1834122878, now seen corresponding path program 1 times [2023-04-01 12:02:07,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:07,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556631371] [2023-04-01 12:02:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:07,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 12:02:08,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:08,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556631371] [2023-04-01 12:02:08,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556631371] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:02:08,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820463025] [2023-04-01 12:02:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:08,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:02:08,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:02:08,211 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) [2023-04-01 12:02:08,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 12:02:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:08,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 33 conjunts are in the unsatisfiable core [2023-04-01 12:02:08,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:02:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:08,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 12:02:08,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820463025] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:08,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 12:02:08,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 22 [2023-04-01 12:02:08,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213992699] [2023-04-01 12:02:08,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:08,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 12:02:08,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:08,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 12:02:08,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-04-01 12:02:08,630 INFO L87 Difference]: Start difference. First operand 375 states and 409 transitions. Second operand has 14 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 6 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (24), 7 states have call predecessors, (24), 6 states have call successors, (24) [2023-04-01 12:02:09,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:09,420 INFO L93 Difference]: Finished difference Result 887 states and 1013 transitions. [2023-04-01 12:02:09,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 12:02:09,421 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 6 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (24), 7 states have call predecessors, (24), 6 states have call successors, (24) Word has length 127 [2023-04-01 12:02:09,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:09,423 INFO L225 Difference]: With dead ends: 887 [2023-04-01 12:02:09,423 INFO L226 Difference]: Without dead ends: 537 [2023-04-01 12:02:09,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=1160, Unknown=0, NotChecked=0, Total=1332 [2023-04-01 12:02:09,425 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 170 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:09,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 277 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:02:09,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-04-01 12:02:09,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 455. [2023-04-01 12:02:09,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 257 states have (on average 1.1361867704280155) internal successors, (292), 278 states have internal predecessors, (292), 97 states have call successors, (97), 97 states have call predecessors, (97), 100 states have return successors, (111), 96 states have call predecessors, (111), 93 states have call successors, (111) [2023-04-01 12:02:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 500 transitions. [2023-04-01 12:02:09,459 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 500 transitions. Word has length 127 [2023-04-01 12:02:09,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:09,459 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 500 transitions. [2023-04-01 12:02:09,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 6 states have call successors, (30), 5 states have call predecessors, (30), 7 states have return successors, (24), 7 states have call predecessors, (24), 6 states have call successors, (24) [2023-04-01 12:02:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 500 transitions. [2023-04-01 12:02:09,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-04-01 12:02:09,461 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:09,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 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] [2023-04-01 12:02:09,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 12:02:09,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:02:09,669 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:09,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:09,669 INFO L85 PathProgramCache]: Analyzing trace with hash -444909338, now seen corresponding path program 1 times [2023-04-01 12:02:09,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:09,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271742738] [2023-04-01 12:02:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:09,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-01 12:02:10,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:10,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271742738] [2023-04-01 12:02:10,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271742738] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:02:10,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821115532] [2023-04-01 12:02:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:10,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:02:10,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:02:10,227 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) [2023-04-01 12:02:10,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 12:02:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:10,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 54 conjunts are in the unsatisfiable core [2023-04-01 12:02:10,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:02:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:10,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:02:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-01 12:02:11,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821115532] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:02:11,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [83441475] [2023-04-01 12:02:11,328 INFO L159 IcfgInterpreter]: Started Sifa with 99 locations of interest [2023-04-01 12:02:11,329 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:02:11,333 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:02:11,336 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:02:11,337 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:02:11,815 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:02:11,861 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 131 for LOIs [2023-04-01 12:02:13,169 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 131 for LOIs [2023-04-01 12:02:13,464 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 131 for LOIs [2023-04-01 12:02:21,153 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 128 for LOIs [2023-04-01 12:02:21,209 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 202 for LOIs [2023-04-01 12:02:22,537 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 200 for LOIs [2023-04-01 12:02:22,584 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification2_spec__2 with input of size 199 for LOIs [2023-04-01 12:02:23,449 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 157 for LOIs [2023-04-01 12:02:23,470 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 164 for LOIs [2023-04-01 12:02:23,492 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 197 for LOIs [2023-04-01 12:02:23,522 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 197 for LOIs [2023-04-01 12:02:25,053 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 197 for LOIs [2023-04-01 12:02:26,472 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 196 for LOIs [2023-04-01 12:02:26,949 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 196 for LOIs [2023-04-01 12:02:26,993 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 208 for LOIs [2023-04-01 12:02:27,029 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 197 for LOIs [2023-04-01 12:02:27,057 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 197 for LOIs [2023-04-01 12:02:28,125 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 197 for LOIs [2023-04-01 12:02:28,159 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 169 for LOIs [2023-04-01 12:02:28,260 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification2_spec__1 with input of size 123 for LOIs [2023-04-01 12:02:28,274 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 121 for LOIs [2023-04-01 12:02:28,287 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 121 for LOIs [2023-04-01 12:02:28,299 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 121 for LOIs [2023-04-01 12:02:28,317 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 121 for LOIs [2023-04-01 12:02:28,329 INFO L180 IcfgInterpreter]: Interpretation finished