/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 IntervalDomain -i ../sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:32:02,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:32:02,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:32:02,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:32:02,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:32:02,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:32:02,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:32:02,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:32:02,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:32:02,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:32:02,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:32:02,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:32:02,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:32:02,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:32:02,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:32:02,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:32:02,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:32:02,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:32:02,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:32:02,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:32:02,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:32:02,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:32:02,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:32:02,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:32:02,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:32:02,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:32:02,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:32:02,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:32:02,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:32:02,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:32:02,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:32:02,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:32:02,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:32:02,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:32:02,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:32:02,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:32:02,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:32:02,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:32:02,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:32:02,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:32:02,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:32:02,981 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 [2023-03-31 23:32:03,014 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:32:03,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:32:03,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:32:03,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:32:03,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:32:03,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:32:03,016 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:32:03,016 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:32:03,016 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:32:03,016 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:32:03,016 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:32:03,019 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:32:03,019 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:32:03,019 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:32:03,019 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:32:03,020 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:32:03,020 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:32:03,020 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:32:03,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:32:03,021 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:32:03,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:32:03,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:32:03,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:32:03,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:32:03,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:32:03,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:32:03,022 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:32:03,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:32:03,023 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:32:03,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:32:03,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:32:03,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:32:03,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:32:03,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:32:03,024 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:32:03,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:32:03,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:32:03,025 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:32:03,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:32:03,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:32:03,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:32:03,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:32:03,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:32:03,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:32:03,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:32:03,272 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:32:03,273 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:32:03,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c [2023-03-31 23:32:04,506 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:32:04,809 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:32:04,809 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product31.cil.c [2023-03-31 23:32:04,842 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e8847273/63cf18d42dcc49d1853527457e33155c/FLAG33d4ddc11 [2023-03-31 23:32:04,853 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e8847273/63cf18d42dcc49d1853527457e33155c [2023-03-31 23:32:04,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:32:04,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:32:04,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:32:04,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:32:04,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:32:04,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:32:04" (1/1) ... [2023-03-31 23:32:04,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ccf1ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:32:04, skipping insertion in model container [2023-03-31 23:32:04,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:32:04" (1/1) ... [2023-03-31 23:32:04,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:32:04,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:32:05,387 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/elevator_spec14_product31.cil.c[71150,71163] [2023-03-31 23:32:05,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:32:05,401 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:32:05,486 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/elevator_spec14_product31.cil.c[71150,71163] [2023-03-31 23:32:05,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:32:05,510 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:32:05,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:32:05 WrapperNode [2023-03-31 23:32:05,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:32:05,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:32:05,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:32:05,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:32:05,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:32:05" (1/1) ... [2023-03-31 23:32:05,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:32:05" (1/1) ... [2023-03-31 23:32:05,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:32:05" (1/1) ... [2023-03-31 23:32:05,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:32:05" (1/1) ... [2023-03-31 23:32:05,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:32:05" (1/1) ... [2023-03-31 23:32:05,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:32:05" (1/1) ... [2023-03-31 23:32:05,634 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:32:05" (1/1) ... [2023-03-31 23:32:05,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:32:05" (1/1) ... [2023-03-31 23:32:05,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:32:05,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:32:05,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:32:05,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:32:05,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:32:05" (1/1) ... [2023-03-31 23:32:05,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:32:05,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:32:05,698 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) [2023-03-31 23:32:05,715 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 [2023-03-31 23:32:05,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:32:05,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:32:05,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 23:32:05,734 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:32:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-03-31 23:32:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-03-31 23:32:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-03-31 23:32:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-03-31 23:32:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-03-31 23:32:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-03-31 23:32:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-03-31 23:32:05,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-03-31 23:32:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 23:32:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 23:32:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 23:32:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 23:32:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 23:32:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 23:32:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-03-31 23:32:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-03-31 23:32:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 23:32:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 23:32:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 23:32:05,736 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 23:32:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-03-31 23:32:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-03-31 23:32:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-03-31 23:32:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-03-31 23:32:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-03-31 23:32:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-03-31 23:32:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-03-31 23:32:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-03-31 23:32:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-03-31 23:32:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2023-03-31 23:32:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-03-31 23:32:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-03-31 23:32:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-03-31 23:32:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-03-31 23:32:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-03-31 23:32:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-03-31 23:32:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-03-31 23:32:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-03-31 23:32:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-03-31 23:32:05,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-03-31 23:32:05,739 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-03-31 23:32:05,740 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2023-03-31 23:32:05,740 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-03-31 23:32:05,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-03-31 23:32:05,740 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-03-31 23:32:05,740 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-03-31 23:32:05,740 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-03-31 23:32:05,740 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-03-31 23:32:05,740 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-03-31 23:32:05,741 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-03-31 23:32:05,741 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 23:32:05,741 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-03-31 23:32:05,741 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-03-31 23:32:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-03-31 23:32:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-03-31 23:32:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-03-31 23:32:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-03-31 23:32:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-03-31 23:32:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-03-31 23:32:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-03-31 23:32:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-03-31 23:32:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-03-31 23:32:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-03-31 23:32:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 23:32:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-03-31 23:32:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-03-31 23:32:05,743 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-03-31 23:32:05,744 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 23:32:05,744 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-03-31 23:32:05,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 23:32:05,744 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 23:32:05,744 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:32:05,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2023-03-31 23:32:05,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 23:32:05,744 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 23:32:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:32:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:32:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:32:05,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:32:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:32:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-03-31 23:32:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-03-31 23:32:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-03-31 23:32:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-03-31 23:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-03-31 23:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-03-31 23:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-03-31 23:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-03-31 23:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 23:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 23:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 23:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 23:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 23:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 23:32:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 23:32:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:32:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 23:32:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 23:32:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:32:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 23:32:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 23:32:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 23:32:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-03-31 23:32:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 23:32:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-03-31 23:32:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-03-31 23:32:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-03-31 23:32:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-03-31 23:32:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-03-31 23:32:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-03-31 23:32:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 23:32:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 23:32:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 23:32:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 23:32:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-03-31 23:32:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-03-31 23:32:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 23:32:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-03-31 23:32:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-03-31 23:32:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-03-31 23:32:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-03-31 23:32:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-03-31 23:32:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-03-31 23:32:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-03-31 23:32:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-03-31 23:32:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-03-31 23:32:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-03-31 23:32:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-03-31 23:32:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2023-03-31 23:32:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-03-31 23:32:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-03-31 23:32:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-03-31 23:32:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-03-31 23:32:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-03-31 23:32:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-03-31 23:32:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2023-03-31 23:32:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-03-31 23:32:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-03-31 23:32:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-03-31 23:32:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-03-31 23:32:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-03-31 23:32:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-03-31 23:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-03-31 23:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-03-31 23:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 23:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-03-31 23:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 23:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 23:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 23:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 23:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:32:06,039 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:32:06,042 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:32:07,307 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:32:08,072 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:32:08,072 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-03-31 23:32:08,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:32:08 BoogieIcfgContainer [2023-03-31 23:32:08,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:32:08,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:32:08,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:32:08,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:32:08,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:32:04" (1/3) ... [2023-03-31 23:32:08,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d29cca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:32:08, skipping insertion in model container [2023-03-31 23:32:08,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:32:05" (2/3) ... [2023-03-31 23:32:08,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d29cca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:32:08, skipping insertion in model container [2023-03-31 23:32:08,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:32:08" (3/3) ... [2023-03-31 23:32:08,082 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product31.cil.c [2023-03-31 23:32:08,100 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:32:08,100 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:32:08,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:32:08,157 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;@4bd52551, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:32:08,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:32:08,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 572 states, 330 states have (on average 1.4545454545454546) internal successors, (480), 353 states have internal predecessors, (480), 176 states have call successors, (176), 54 states have call predecessors, (176), 54 states have return successors, (176), 171 states have call predecessors, (176), 176 states have call successors, (176) [2023-03-31 23:32:08,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-03-31 23:32:08,185 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:32:08,185 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:32:08,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:32:08,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:32:08,190 INFO L85 PathProgramCache]: Analyzing trace with hash -916783381, now seen corresponding path program 1 times [2023-03-31 23:32:08,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:32:08,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413297726] [2023-03-31 23:32:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:08,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:32:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-03-31 23:32:09,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:32:09,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413297726] [2023-03-31 23:32:09,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413297726] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:32:09,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:32:09,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 23:32:09,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045565631] [2023-03-31 23:32:09,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:32:09,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 23:32:09,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:32:09,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 23:32:09,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 23:32:09,335 INFO L87 Difference]: Start difference. First operand has 572 states, 330 states have (on average 1.4545454545454546) internal successors, (480), 353 states have internal predecessors, (480), 176 states have call successors, (176), 54 states have call predecessors, (176), 54 states have return successors, (176), 171 states have call predecessors, (176), 176 states have call successors, (176) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-03-31 23:32:10,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:32:10,141 INFO L93 Difference]: Finished difference Result 1318 states and 1966 transitions. [2023-03-31 23:32:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:32:10,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 110 [2023-03-31 23:32:10,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:32:10,169 INFO L225 Difference]: With dead ends: 1318 [2023-03-31 23:32:10,169 INFO L226 Difference]: Without dead ends: 868 [2023-03-31 23:32:10,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:32:10,180 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 638 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 23:32:10,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 2545 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 23:32:10,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2023-03-31 23:32:10,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 861. [2023-03-31 23:32:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 540 states have (on average 1.487037037037037) internal successors, (803), 569 states have internal predecessors, (803), 234 states have call successors, (234), 91 states have call predecessors, (234), 86 states have return successors, (237), 224 states have call predecessors, (237), 228 states have call successors, (237) [2023-03-31 23:32:10,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1274 transitions. [2023-03-31 23:32:10,369 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1274 transitions. Word has length 110 [2023-03-31 23:32:10,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:32:10,370 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1274 transitions. [2023-03-31 23:32:10,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-03-31 23:32:10,371 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1274 transitions. [2023-03-31 23:32:10,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-03-31 23:32:10,379 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:32:10,379 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:32:10,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:32:10,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:32:10,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:32:10,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1738992624, now seen corresponding path program 1 times [2023-03-31 23:32:10,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:32:10,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292098872] [2023-03-31 23:32:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:10,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:32:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-03-31 23:32:11,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:32:11,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292098872] [2023-03-31 23:32:11,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292098872] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:32:11,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:32:11,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 23:32:11,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400890372] [2023-03-31 23:32:11,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:32:11,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:32:11,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:32:11,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:32:11,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:32:11,044 INFO L87 Difference]: Start difference. First operand 861 states and 1274 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2023-03-31 23:32:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:32:11,863 INFO L93 Difference]: Finished difference Result 1003 states and 1449 transitions. [2023-03-31 23:32:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 23:32:11,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 114 [2023-03-31 23:32:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:32:11,871 INFO L225 Difference]: With dead ends: 1003 [2023-03-31 23:32:11,871 INFO L226 Difference]: Without dead ends: 1000 [2023-03-31 23:32:11,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-03-31 23:32:11,873 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 782 mSDsluCounter, 2417 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 23:32:11,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 3185 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 23:32:11,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2023-03-31 23:32:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 992. [2023-03-31 23:32:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 616 states have (on average 1.4496753246753247) internal successors, (893), 644 states have internal predecessors, (893), 267 states have call successors, (267), 113 states have call predecessors, (267), 108 states have return successors, (277), 258 states have call predecessors, (277), 260 states have call successors, (277) [2023-03-31 23:32:11,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1437 transitions. [2023-03-31 23:32:11,937 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1437 transitions. Word has length 114 [2023-03-31 23:32:11,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:32:11,939 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1437 transitions. [2023-03-31 23:32:11,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2023-03-31 23:32:11,939 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1437 transitions. [2023-03-31 23:32:11,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 23:32:11,949 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:32:11,949 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:32:11,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 23:32:11,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:32:11,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:32:11,950 INFO L85 PathProgramCache]: Analyzing trace with hash -310424659, now seen corresponding path program 1 times [2023-03-31 23:32:11,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:32:11,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270620276] [2023-03-31 23:32:11,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:11,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:32:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-03-31 23:32:12,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:32:12,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270620276] [2023-03-31 23:32:12,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270620276] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:32:12,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:32:12,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 23:32:12,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198285017] [2023-03-31 23:32:12,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:32:12,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 23:32:12,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:32:12,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 23:32:12,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 23:32:12,251 INFO L87 Difference]: Start difference. First operand 992 states and 1437 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-03-31 23:32:12,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:32:12,402 INFO L93 Difference]: Finished difference Result 1963 states and 2861 transitions. [2023-03-31 23:32:12,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 23:32:12,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 150 [2023-03-31 23:32:12,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:32:12,409 INFO L225 Difference]: With dead ends: 1963 [2023-03-31 23:32:12,409 INFO L226 Difference]: Without dead ends: 1002 [2023-03-31 23:32:12,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 23:32:12,419 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 10 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:32:12,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2443 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:32:12,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2023-03-31 23:32:12,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 1002. [2023-03-31 23:32:12,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 623 states have (on average 1.4446227929373996) internal successors, (900), 652 states have internal predecessors, (900), 267 states have call successors, (267), 113 states have call predecessors, (267), 111 states have return successors, (280), 260 states have call predecessors, (280), 260 states have call successors, (280) [2023-03-31 23:32:12,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1447 transitions. [2023-03-31 23:32:12,474 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1447 transitions. Word has length 150 [2023-03-31 23:32:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:32:12,475 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1447 transitions. [2023-03-31 23:32:12,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-03-31 23:32:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1447 transitions. [2023-03-31 23:32:12,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-03-31 23:32:12,480 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:32:12,480 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:32:12,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 23:32:12,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:32:12,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:32:12,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1411213770, now seen corresponding path program 1 times [2023-03-31 23:32:12,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:32:12,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795404507] [2023-03-31 23:32:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:12,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:32:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-03-31 23:32:12,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:32:12,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795404507] [2023-03-31 23:32:12,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795404507] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:32:12,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933471704] [2023-03-31 23:32:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:12,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:12,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:32:12,889 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) [2023-03-31 23:32:12,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 23:32:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:13,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-31 23:32:13,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:32:13,497 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-03-31 23:32:13,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:32:13,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933471704] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:32:13,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:32:13,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-03-31 23:32:13,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6456232] [2023-03-31 23:32:13,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:32:13,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 23:32:13,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:32:13,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 23:32:13,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:32:13,500 INFO L87 Difference]: Start difference. First operand 1002 states and 1447 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-03-31 23:32:13,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:32:13,768 INFO L93 Difference]: Finished difference Result 2051 states and 3027 transitions. [2023-03-31 23:32:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 23:32:13,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 159 [2023-03-31 23:32:13,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:32:13,778 INFO L225 Difference]: With dead ends: 2051 [2023-03-31 23:32:13,778 INFO L226 Difference]: Without dead ends: 1080 [2023-03-31 23:32:13,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-03-31 23:32:13,788 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 213 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:32:13,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1626 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:32:13,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2023-03-31 23:32:13,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1080. [2023-03-31 23:32:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 699 states have (on average 1.496423462088698) internal successors, (1046), 728 states have internal predecessors, (1046), 267 states have call successors, (267), 115 states have call predecessors, (267), 113 states have return successors, (280), 260 states have call predecessors, (280), 260 states have call successors, (280) [2023-03-31 23:32:13,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1593 transitions. [2023-03-31 23:32:13,853 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1593 transitions. Word has length 159 [2023-03-31 23:32:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:32:13,854 INFO L495 AbstractCegarLoop]: Abstraction has 1080 states and 1593 transitions. [2023-03-31 23:32:13,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-03-31 23:32:13,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1593 transitions. [2023-03-31 23:32:13,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-03-31 23:32:13,860 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:32:13,860 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:32:13,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 23:32:14,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:14,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:32:14,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:32:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1582718898, now seen corresponding path program 1 times [2023-03-31 23:32:14,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:32:14,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578076276] [2023-03-31 23:32:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:14,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:32:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-03-31 23:32:14,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:32:14,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578076276] [2023-03-31 23:32:14,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578076276] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:32:14,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563017736] [2023-03-31 23:32:14,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:14,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:14,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:32:14,312 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) [2023-03-31 23:32:14,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 23:32:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:14,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 2617 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-31 23:32:14,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:32:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-03-31 23:32:14,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:32:14,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563017736] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:32:14,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:32:14,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-03-31 23:32:14,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72692211] [2023-03-31 23:32:14,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:32:14,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 23:32:14,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:32:14,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 23:32:14,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:32:14,875 INFO L87 Difference]: Start difference. First operand 1080 states and 1593 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-03-31 23:32:15,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:32:15,161 INFO L93 Difference]: Finished difference Result 2207 states and 3317 transitions. [2023-03-31 23:32:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 23:32:15,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 164 [2023-03-31 23:32:15,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:32:15,169 INFO L225 Difference]: With dead ends: 2207 [2023-03-31 23:32:15,169 INFO L226 Difference]: Without dead ends: 1158 [2023-03-31 23:32:15,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:32:15,176 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 211 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:32:15,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1626 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:32:15,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2023-03-31 23:32:15,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1158. [2023-03-31 23:32:15,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 775 states have (on average 1.5380645161290323) internal successors, (1192), 804 states have internal predecessors, (1192), 267 states have call successors, (267), 117 states have call predecessors, (267), 115 states have return successors, (280), 260 states have call predecessors, (280), 260 states have call successors, (280) [2023-03-31 23:32:15,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1739 transitions. [2023-03-31 23:32:15,226 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1739 transitions. Word has length 164 [2023-03-31 23:32:15,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:32:15,227 INFO L495 AbstractCegarLoop]: Abstraction has 1158 states and 1739 transitions. [2023-03-31 23:32:15,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-03-31 23:32:15,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1739 transitions. [2023-03-31 23:32:15,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-03-31 23:32:15,231 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:32:15,232 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:32:15,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 23:32:15,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:15,437 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:32:15,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:32:15,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2141639394, now seen corresponding path program 1 times [2023-03-31 23:32:15,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:32:15,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182338939] [2023-03-31 23:32:15,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:15,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:32:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-03-31 23:32:15,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:32:15,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182338939] [2023-03-31 23:32:15,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182338939] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:32:15,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152909122] [2023-03-31 23:32:15,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:15,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:15,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:32:15,681 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) [2023-03-31 23:32:15,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 23:32:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:16,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 2621 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-31 23:32:16,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:32:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-03-31 23:32:16,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:32:16,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152909122] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:32:16,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:32:16,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-03-31 23:32:16,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878208784] [2023-03-31 23:32:16,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:32:16,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 23:32:16,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:32:16,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 23:32:16,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:32:16,237 INFO L87 Difference]: Start difference. First operand 1158 states and 1739 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-03-31 23:32:16,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:32:16,523 INFO L93 Difference]: Finished difference Result 2363 states and 3607 transitions. [2023-03-31 23:32:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 23:32:16,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 168 [2023-03-31 23:32:16,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:32:16,535 INFO L225 Difference]: With dead ends: 2363 [2023-03-31 23:32:16,535 INFO L226 Difference]: Without dead ends: 1236 [2023-03-31 23:32:16,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:32:16,541 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 209 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:32:16,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1626 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:32:16,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2023-03-31 23:32:16,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2023-03-31 23:32:16,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 851 states have (on average 1.572267920094007) internal successors, (1338), 880 states have internal predecessors, (1338), 267 states have call successors, (267), 119 states have call predecessors, (267), 117 states have return successors, (280), 260 states have call predecessors, (280), 260 states have call successors, (280) [2023-03-31 23:32:16,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1885 transitions. [2023-03-31 23:32:16,595 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1885 transitions. Word has length 168 [2023-03-31 23:32:16,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:32:16,596 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1885 transitions. [2023-03-31 23:32:16,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-03-31 23:32:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1885 transitions. [2023-03-31 23:32:16,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-03-31 23:32:16,601 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:32:16,601 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:32:16,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 23:32:16,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:16,811 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:32:16,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:32:16,811 INFO L85 PathProgramCache]: Analyzing trace with hash 455081686, now seen corresponding path program 1 times [2023-03-31 23:32:16,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:32:16,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069736664] [2023-03-31 23:32:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:16,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:32:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-03-31 23:32:17,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:32:17,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069736664] [2023-03-31 23:32:17,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069736664] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:32:17,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813926976] [2023-03-31 23:32:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:17,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:17,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:32:17,042 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) [2023-03-31 23:32:17,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 23:32:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:17,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 2624 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-31 23:32:17,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:32:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-03-31 23:32:17,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:32:17,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813926976] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:32:17,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:32:17,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-03-31 23:32:17,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248592537] [2023-03-31 23:32:17,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:32:17,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 23:32:17,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:32:17,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 23:32:17,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:32:17,577 INFO L87 Difference]: Start difference. First operand 1236 states and 1885 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-03-31 23:32:17,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:32:17,885 INFO L93 Difference]: Finished difference Result 2519 states and 3897 transitions. [2023-03-31 23:32:17,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 23:32:17,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 171 [2023-03-31 23:32:17,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:32:17,892 INFO L225 Difference]: With dead ends: 2519 [2023-03-31 23:32:17,893 INFO L226 Difference]: Without dead ends: 1314 [2023-03-31 23:32:17,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:32:17,898 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 207 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:32:17,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1626 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:32:17,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2023-03-31 23:32:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1314. [2023-03-31 23:32:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 927 states have (on average 1.6008629989212513) internal successors, (1484), 956 states have internal predecessors, (1484), 267 states have call successors, (267), 121 states have call predecessors, (267), 119 states have return successors, (280), 260 states have call predecessors, (280), 260 states have call successors, (280) [2023-03-31 23:32:17,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 2031 transitions. [2023-03-31 23:32:17,951 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 2031 transitions. Word has length 171 [2023-03-31 23:32:17,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:32:17,952 INFO L495 AbstractCegarLoop]: Abstraction has 1314 states and 2031 transitions. [2023-03-31 23:32:17,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-03-31 23:32:17,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 2031 transitions. [2023-03-31 23:32:17,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-03-31 23:32:17,957 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:32:17,957 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:32:17,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-31 23:32:18,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:18,166 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:32:18,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:32:18,167 INFO L85 PathProgramCache]: Analyzing trace with hash 368967812, now seen corresponding path program 1 times [2023-03-31 23:32:18,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:32:18,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615397189] [2023-03-31 23:32:18,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:18,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:32:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-03-31 23:32:18,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:32:18,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615397189] [2023-03-31 23:32:18,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615397189] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:32:18,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595921476] [2023-03-31 23:32:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:18,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:18,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:32:18,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:32:18,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-31 23:32:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:19,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 15 conjunts are in the unsatisfiable core [2023-03-31 23:32:19,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:32:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-03-31 23:32:19,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:32:19,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595921476] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:32:19,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:32:19,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-03-31 23:32:19,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688612866] [2023-03-31 23:32:19,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:32:19,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 23:32:19,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:32:19,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 23:32:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:32:19,477 INFO L87 Difference]: Start difference. First operand 1314 states and 2031 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) [2023-03-31 23:32:20,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:32:20,152 INFO L93 Difference]: Finished difference Result 3855 states and 6043 transitions. [2023-03-31 23:32:20,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 23:32:20,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) Word has length 173 [2023-03-31 23:32:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:32:20,165 INFO L225 Difference]: With dead ends: 3855 [2023-03-31 23:32:20,166 INFO L226 Difference]: Without dead ends: 2571 [2023-03-31 23:32:20,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:32:20,172 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 572 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 23:32:20,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1591 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 23:32:20,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2023-03-31 23:32:20,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2484. [2023-03-31 23:32:20,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 1802 states have (on average 1.6165371809101) internal successors, (2913), 1847 states have internal predecessors, (2913), 465 states have call successors, (465), 215 states have call predecessors, (465), 216 states have return successors, (508), 445 states have call predecessors, (508), 455 states have call successors, (508) [2023-03-31 23:32:20,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3886 transitions. [2023-03-31 23:32:20,285 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3886 transitions. Word has length 173 [2023-03-31 23:32:20,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:32:20,286 INFO L495 AbstractCegarLoop]: Abstraction has 2484 states and 3886 transitions. [2023-03-31 23:32:20,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (29), 2 states have call predecessors, (29), 3 states have call successors, (29) [2023-03-31 23:32:20,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3886 transitions. [2023-03-31 23:32:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-03-31 23:32:20,292 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:32:20,293 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:32:20,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-31 23:32:20,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:20,507 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:32:20,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:32:20,508 INFO L85 PathProgramCache]: Analyzing trace with hash 169844163, now seen corresponding path program 1 times [2023-03-31 23:32:20,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:32:20,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450245179] [2023-03-31 23:32:20,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:20,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:32:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-03-31 23:32:21,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:32:21,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450245179] [2023-03-31 23:32:21,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450245179] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:32:21,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932590941] [2023-03-31 23:32:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:21,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:21,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:32:21,077 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:32:21,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-31 23:32:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:21,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 17 conjunts are in the unsatisfiable core [2023-03-31 23:32:21,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:32:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-03-31 23:32:21,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:32:21,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932590941] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:32:21,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:32:21,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-03-31 23:32:21,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387180101] [2023-03-31 23:32:21,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:32:21,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:32:21,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:32:21,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:32:21,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-03-31 23:32:21,810 INFO L87 Difference]: Start difference. First operand 2484 states and 3886 transitions. Second operand has 6 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-03-31 23:32:22,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:32:22,872 INFO L93 Difference]: Finished difference Result 4901 states and 7694 transitions. [2023-03-31 23:32:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:32:22,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 180 [2023-03-31 23:32:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:32:22,884 INFO L225 Difference]: With dead ends: 4901 [2023-03-31 23:32:22,885 INFO L226 Difference]: Without dead ends: 2447 [2023-03-31 23:32:22,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-03-31 23:32:22,894 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 523 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 23:32:22,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 2461 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 23:32:22,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2023-03-31 23:32:22,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2438. [2023-03-31 23:32:22,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 1762 states have (on average 1.5919409761634506) internal successors, (2805), 1807 states have internal predecessors, (2805), 457 states have call successors, (457), 219 states have call predecessors, (457), 218 states have return successors, (502), 435 states have call predecessors, (502), 447 states have call successors, (502) [2023-03-31 23:32:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 3764 transitions. [2023-03-31 23:32:22,996 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 3764 transitions. Word has length 180 [2023-03-31 23:32:22,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:32:22,996 INFO L495 AbstractCegarLoop]: Abstraction has 2438 states and 3764 transitions. [2023-03-31 23:32:22,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-03-31 23:32:22,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 3764 transitions. [2023-03-31 23:32:23,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-03-31 23:32:23,002 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:32:23,003 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:32:23,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-31 23:32:23,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:23,212 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:32:23,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:32:23,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1086180493, now seen corresponding path program 1 times [2023-03-31 23:32:23,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:32:23,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10499496] [2023-03-31 23:32:23,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:23,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:32:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-03-31 23:32:23,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:32:23,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10499496] [2023-03-31 23:32:23,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10499496] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:32:23,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051416752] [2023-03-31 23:32:23,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:23,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:23,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:32:23,706 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:32:23,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-31 23:32:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:24,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 2621 conjuncts, 180 conjunts are in the unsatisfiable core [2023-03-31 23:32:24,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:32:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-03-31 23:32:25,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:32:25,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051416752] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:32:25,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:32:25,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 19 [2023-03-31 23:32:25,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968671698] [2023-03-31 23:32:25,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:32:25,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 23:32:25,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:32:25,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 23:32:25,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-03-31 23:32:25,769 INFO L87 Difference]: Start difference. First operand 2438 states and 3764 transitions. Second operand has 14 states, 9 states have (on average 9.777777777777779) internal successors, (88), 10 states have internal predecessors, (88), 6 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2023-03-31 23:32:30,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:32:30,579 INFO L93 Difference]: Finished difference Result 6020 states and 9388 transitions. [2023-03-31 23:32:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-03-31 23:32:30,580 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 9.777777777777779) internal successors, (88), 10 states have internal predecessors, (88), 6 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) Word has length 175 [2023-03-31 23:32:30,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:32:30,599 INFO L225 Difference]: With dead ends: 6020 [2023-03-31 23:32:30,599 INFO L226 Difference]: Without dead ends: 3612 [2023-03-31 23:32:30,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2023-03-31 23:32:30,608 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1006 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 6147 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 6639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 6147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:32:30,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 2374 Invalid, 6639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 6147 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-03-31 23:32:30,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3612 states. [2023-03-31 23:32:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3612 to 3329. [2023-03-31 23:32:30,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3329 states, 2442 states have (on average 1.606060606060606) internal successors, (3922), 2507 states have internal predecessors, (3922), 596 states have call successors, (596), 289 states have call predecessors, (596), 290 states have return successors, (656), 568 states have call predecessors, (656), 586 states have call successors, (656) [2023-03-31 23:32:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3329 states to 3329 states and 5174 transitions. [2023-03-31 23:32:30,868 INFO L78 Accepts]: Start accepts. Automaton has 3329 states and 5174 transitions. Word has length 175 [2023-03-31 23:32:30,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:32:30,869 INFO L495 AbstractCegarLoop]: Abstraction has 3329 states and 5174 transitions. [2023-03-31 23:32:30,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 9.777777777777779) internal successors, (88), 10 states have internal predecessors, (88), 6 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2023-03-31 23:32:30,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3329 states and 5174 transitions. [2023-03-31 23:32:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-03-31 23:32:30,876 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:32:30,876 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:32:30,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-31 23:32:31,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:31,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:32:31,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:32:31,088 INFO L85 PathProgramCache]: Analyzing trace with hash 436394455, now seen corresponding path program 1 times [2023-03-31 23:32:31,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:32:31,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961897210] [2023-03-31 23:32:31,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:31,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:32:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-03-31 23:32:32,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:32:32,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961897210] [2023-03-31 23:32:32,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961897210] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:32:32,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:32:32,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-03-31 23:32:32,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923555963] [2023-03-31 23:32:32,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:32:32,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 23:32:32,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:32:32,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 23:32:32,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-03-31 23:32:32,267 INFO L87 Difference]: Start difference. First operand 3329 states and 5174 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (36), 3 states have call predecessors, (36), 6 states have return successors, (29), 7 states have call predecessors, (29), 3 states have call successors, (29) [2023-03-31 23:32:33,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:32:33,336 INFO L93 Difference]: Finished difference Result 5116 states and 7855 transitions. [2023-03-31 23:32:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-03-31 23:32:33,336 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (36), 3 states have call predecessors, (36), 6 states have return successors, (29), 7 states have call predecessors, (29), 3 states have call successors, (29) Word has length 179 [2023-03-31 23:32:33,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:32:33,345 INFO L225 Difference]: With dead ends: 5116 [2023-03-31 23:32:33,345 INFO L226 Difference]: Without dead ends: 1823 [2023-03-31 23:32:33,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2023-03-31 23:32:33,356 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 895 mSDsluCounter, 4775 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 5389 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 23:32:33,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 5389 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 23:32:33,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2023-03-31 23:32:33,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1705. [2023-03-31 23:32:33,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1205 states have (on average 1.525311203319502) internal successors, (1838), 1230 states have internal predecessors, (1838), 330 states have call successors, (330), 171 states have call predecessors, (330), 169 states have return successors, (362), 315 states have call predecessors, (362), 322 states have call successors, (362) [2023-03-31 23:32:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2530 transitions. [2023-03-31 23:32:33,446 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2530 transitions. Word has length 179 [2023-03-31 23:32:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:32:33,447 INFO L495 AbstractCegarLoop]: Abstraction has 1705 states and 2530 transitions. [2023-03-31 23:32:33,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (36), 3 states have call predecessors, (36), 6 states have return successors, (29), 7 states have call predecessors, (29), 3 states have call successors, (29) [2023-03-31 23:32:33,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2530 transitions. [2023-03-31 23:32:33,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-03-31 23:32:33,454 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:32:33,454 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:32:33,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 23:32:33,454 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:32:33,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:32:33,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1655830670, now seen corresponding path program 1 times [2023-03-31 23:32:33,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:32:33,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428569601] [2023-03-31 23:32:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:33,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:32:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2023-03-31 23:32:33,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:32:33,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428569601] [2023-03-31 23:32:33,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428569601] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:32:33,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425013182] [2023-03-31 23:32:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:32:33,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:32:33,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:32:33,765 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:32:33,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-03-31 23:32:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:32:34,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 3402 conjuncts, 69 conjunts are in the unsatisfiable core [2023-03-31 23:32:34,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:32:35,141 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 151 proven. 71 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-03-31 23:32:35,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:32:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 10 proven. 41 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-03-31 23:32:36,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425013182] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:32:36,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1767249846] [2023-03-31 23:32:36,648 INFO L159 IcfgInterpreter]: Started Sifa with 166 locations of interest [2023-03-31 23:32:36,648 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:32:36,652 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:32:36,656 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:32:36,656 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:32:38,826 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 172 for LOIs [2023-03-31 23:32:39,266 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 222 for LOIs [2023-03-31 23:32:41,640 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 222 for LOIs [2023-03-31 23:32:42,031 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 222 for LOIs [2023-03-31 23:32:44,600 INFO L197 IcfgInterpreter]: Interpreting procedure threeTS with input of size 187 for LOIs [2023-03-31 23:32:46,693 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 84 for LOIs [2023-03-31 23:32:47,368 INFO L197 IcfgInterpreter]: Interpreting procedure processWaitingOnFloor with input of size 181 for LOIs [2023-03-31 23:32:47,898 INFO L197 IcfgInterpreter]: Interpreting procedure isPersonOnFloor with input of size 43 for LOIs [2023-03-31 23:32:48,132 INFO L197 IcfgInterpreter]: Interpreting procedure resetCallOnFloor with input of size 51 for LOIs [2023-03-31 23:32:48,177 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 32 for LOIs [2023-03-31 23:32:48,231 INFO L197 IcfgInterpreter]: Interpreting procedure resetFloorButton with input of size 42 for LOIs [2023-03-31 23:32:48,257 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification14_spec__1 with input of size 21 for LOIs [2023-03-31 23:32:48,340 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 31 for LOIs [2023-03-31 23:32:48,344 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 21 for LOIs [2023-03-31 23:32:48,346 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloor with input of size 27 for LOIs [2023-03-31 23:32:48,350 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedAtCurrentFloor with input of size 54 for LOIs [2023-03-31 23:32:48,450 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 21 for LOIs [2023-03-31 23:32:48,452 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 21 for LOIs [2023-03-31 23:32:48,475 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 39 for LOIs [2023-03-31 23:32:48,526 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 37 for LOIs [2023-03-31 23:32:48,530 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 192 for LOIs [2023-03-31 23:32:49,936 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 197 for LOIs [2023-03-31 23:32:50,978 INFO L197 IcfgInterpreter]: Interpreting procedure callOnFloor with input of size 134 for LOIs [2023-03-31 23:32:51,054 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 125 for LOIs [2023-03-31 23:32:51,096 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 122 for LOIs [2023-03-31 23:32:51,114 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 122 for LOIs [2023-03-31 23:32:51,132 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 122 for LOIs [2023-03-31 23:32:51,156 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull with input of size 21 for LOIs [2023-03-31 23:32:51,184 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedAtCurrentFloor__wrappee__empty with input of size 24 for LOIs [2023-03-31 23:32:51,229 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 28 for LOIs [2023-03-31 23:32:51,244 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 122 for LOIs [2023-03-31 23:32:51,261 INFO L180 IcfgInterpreter]: Interpretation finished