/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:35:33,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:35:33,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:35:33,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:35:33,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:35:33,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:35:33,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:35:33,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:35:33,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:35:33,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:35:33,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:35:33,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:35:33,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:35:33,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:35:33,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:35:33,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:35:33,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:35:33,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:35:33,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:35:33,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:35:33,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:35:33,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:35:33,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:35:33,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:35:33,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 05:35:33,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 05:35:33,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 05:35:33,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 05:35:33,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 05:35:33,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 05:35:33,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:35:33,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:35:33,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:35:33,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:35:33,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:35:33,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:35:33,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:35:33,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:35:33,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:35:33,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:35:33,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:35:33,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 05:35:33,934 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:35:33,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:35:33,934 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:35:33,934 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:35:33,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:35:33,935 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:35:33,935 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:35:33,935 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:35:33,936 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:35:33,936 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:35:33,936 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:35:33,936 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:35:33,936 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:35:33,936 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:35:33,938 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:35:33,939 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:35:33,939 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:35:33,939 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:35:33,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:35:33,940 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:35:33,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:35:33,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:35:33,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:35:33,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:35:33,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:35:33,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:35:33,941 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:35:33,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:35:33,942 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:35:33,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:35:33,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:35:33,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:35:33,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:35:33,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:35:33,943 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:35:33,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:35:33,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:35:33,944 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:35:33,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:35:33,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:35:33,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:35:33,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:35:34,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:35:34,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:35:34,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:35:34,170 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:35:34,171 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:35:34,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c [2023-04-01 05:35:35,318 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:35:35,625 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:35:35,626 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c [2023-04-01 05:35:35,651 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baae93a66/35d3ef16146d4c8899c77cd2da9229b5/FLAGf0f488533 [2023-04-01 05:35:35,667 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baae93a66/35d3ef16146d4c8899c77cd2da9229b5 [2023-04-01 05:35:35,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:35:35,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:35:35,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:35:35,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:35:35,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:35:35,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:35:35" (1/1) ... [2023-04-01 05:35:35,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1829c120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:35, skipping insertion in model container [2023-04-01 05:35:35,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:35:35" (1/1) ... [2023-04-01 05:35:35,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:35:35,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:35:35,868 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_spec2_product11.cil.c[1545,1558] [2023-04-01 05:35:36,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:35:36,170 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:35:36,188 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_spec2_product11.cil.c[1545,1558] [2023-04-01 05:35:36,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:35:36,331 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:35:36,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:36 WrapperNode [2023-04-01 05:35:36,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:35:36,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:35:36,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:35:36,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:35:36,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:36" (1/1) ... [2023-04-01 05:35:36,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:36" (1/1) ... [2023-04-01 05:35:36,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:36" (1/1) ... [2023-04-01 05:35:36,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:36" (1/1) ... [2023-04-01 05:35:36,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:36" (1/1) ... [2023-04-01 05:35:36,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:36" (1/1) ... [2023-04-01 05:35:36,471 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:36" (1/1) ... [2023-04-01 05:35:36,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:36" (1/1) ... [2023-04-01 05:35:36,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:35:36,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:35:36,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:35:36,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:35:36,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:36" (1/1) ... [2023-04-01 05:35:36,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:35:36,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:35:36,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 05:35:36,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 05:35:36,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:35:36,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:35:36,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 05:35:36,585 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:35:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 05:35:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-01 05:35:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-01 05:35:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-01 05:35:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-01 05:35:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-01 05:35:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-01 05:35:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-01 05:35:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-01 05:35:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 05:35:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-01 05:35:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-01 05:35:36,588 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-01 05:35:36,588 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 05:35:36,588 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-01 05:35:36,588 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 05:35:36,588 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 05:35:36,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:35:36,588 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-01 05:35:36,588 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-01 05:35:36,588 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-01 05:35:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 05:35:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 05:35:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 05:35:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 05:35:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 05:35:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 05:35:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-01 05:35:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-01 05:35:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-01 05:35:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-01 05:35:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-01 05:35:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-01 05:35:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-01 05:35:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-01 05:35:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-01 05:35:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-01 05:35:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-01 05:35:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-01 05:35:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-01 05:35:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-01 05:35:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-01 05:35:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-04-01 05:35:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-01 05:35:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-01 05:35:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-01 05:35:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-01 05:35:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-01 05:35:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-01 05:35:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-01 05:35:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 05:35:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-01 05:35:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-01 05:35:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-04-01 05:35:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-04-01 05:35:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-01 05:35:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-01 05:35:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2023-04-01 05:35:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2023-04-01 05:35:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2023-04-01 05:35:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2023-04-01 05:35:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-01 05:35:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-01 05:35:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-01 05:35:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-01 05:35:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-01 05:35:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-01 05:35:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-01 05:35:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-01 05:35:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 05:35:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 05:35:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 05:35:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 05:35:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 05:35:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:35:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:35:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:35:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:35:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 05:35:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 05:35:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 05:35:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-01 05:35:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-01 05:35:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-01 05:35:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-01 05:35:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-01 05:35:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-01 05:35:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-01 05:35:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-01 05:35:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-01 05:35:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 05:35:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-01 05:35:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-01 05:35:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-01 05:35:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 05:35:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-01 05:35:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-01 05:35:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-01 05:35:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-01 05:35:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-01 05:35:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 05:35:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-01 05:35:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 05:35:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2023-04-01 05:35:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2023-04-01 05:35:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 05:35:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 05:35:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 05:35:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 05:35:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 05:35:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:35:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-01 05:35:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-01 05:35:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 05:35:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 05:35:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 05:35:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 05:35:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 05:35:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:35:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 05:35:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 05:35:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:35:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 05:35:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 05:35:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:35:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 05:35:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 05:35:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 05:35:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 05:35:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-01 05:35:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-01 05:35:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-01 05:35:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-01 05:35:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-01 05:35:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-01 05:35:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-01 05:35:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-01 05:35:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-01 05:35:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-01 05:35:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-01 05:35:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-01 05:35:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-01 05:35:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-04-01 05:35:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-04-01 05:35:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2023-04-01 05:35:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-01 05:35:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-01 05:35:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-01 05:35:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-01 05:35:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 05:35:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:35:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:35:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:35:36,957 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:35:36,960 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:35:38,346 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:35:39,240 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:35:39,241 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-01 05:35:39,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:35:39 BoogieIcfgContainer [2023-04-01 05:35:39,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:35:39,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:35:39,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:35:39,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:35:39,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:35:35" (1/3) ... [2023-04-01 05:35:39,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af21c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:35:39, skipping insertion in model container [2023-04-01 05:35:39,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:35:36" (2/3) ... [2023-04-01 05:35:39,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af21c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:35:39, skipping insertion in model container [2023-04-01 05:35:39,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:35:39" (3/3) ... [2023-04-01 05:35:39,256 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product11.cil.c [2023-04-01 05:35:39,274 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:35:39,275 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:35:39,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:35:39,366 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;@6ae99540, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:35:39,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:35:39,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 564 states, 331 states have (on average 1.4924471299093656) internal successors, (494), 358 states have internal predecessors, (494), 171 states have call successors, (171), 49 states have call predecessors, (171), 49 states have return successors, (171), 162 states have call predecessors, (171), 171 states have call successors, (171) [2023-04-01 05:35:39,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-01 05:35:39,405 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:39,406 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-04-01 05:35:39,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:39,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:39,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1754782928, now seen corresponding path program 1 times [2023-04-01 05:35:39,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:39,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146209248] [2023-04-01 05:35:39,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:39,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 05:35:39,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:39,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146209248] [2023-04-01 05:35:39,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146209248] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:39,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:39,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 05:35:39,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317626220] [2023-04-01 05:35:39,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:39,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 05:35:39,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:39,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 05:35:39,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:35:40,001 INFO L87 Difference]: Start difference. First operand has 564 states, 331 states have (on average 1.4924471299093656) internal successors, (494), 358 states have internal predecessors, (494), 171 states have call successors, (171), 49 states have call predecessors, (171), 49 states have return successors, (171), 162 states have call predecessors, (171), 171 states have call successors, (171) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-04-01 05:35:40,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:40,178 INFO L93 Difference]: Finished difference Result 467 states and 697 transitions. [2023-04-01 05:35:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 05:35:40,181 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 112 [2023-04-01 05:35:40,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:40,203 INFO L225 Difference]: With dead ends: 467 [2023-04-01 05:35:40,203 INFO L226 Difference]: Without dead ends: 433 [2023-04-01 05:35:40,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:35:40,210 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:40,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 619 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:35:40,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-04-01 05:35:40,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2023-04-01 05:35:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 275 states have (on average 1.5345454545454544) internal successors, (422), 294 states have internal predecessors, (422), 116 states have call successors, (116), 45 states have call predecessors, (116), 41 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2023-04-01 05:35:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 646 transitions. [2023-04-01 05:35:40,317 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 646 transitions. Word has length 112 [2023-04-01 05:35:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:40,320 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 646 transitions. [2023-04-01 05:35:40,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-04-01 05:35:40,322 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 646 transitions. [2023-04-01 05:35:40,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-01 05:35:40,327 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:40,327 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-04-01 05:35:40,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 05:35:40,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:40,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:40,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2100351780, now seen corresponding path program 1 times [2023-04-01 05:35:40,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:40,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229513314] [2023-04-01 05:35:40,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:40,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 05:35:41,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:41,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229513314] [2023-04-01 05:35:41,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229513314] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:41,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:41,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 05:35:41,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462171562] [2023-04-01 05:35:41,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:41,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 05:35:41,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:41,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 05:35:41,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:35:41,162 INFO L87 Difference]: Start difference. First operand 433 states and 646 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-04-01 05:35:43,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:43,612 INFO L93 Difference]: Finished difference Result 1226 states and 1875 transitions. [2023-04-01 05:35:43,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 05:35:43,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 113 [2023-04-01 05:35:43,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:43,618 INFO L225 Difference]: With dead ends: 1226 [2023-04-01 05:35:43,619 INFO L226 Difference]: Without dead ends: 835 [2023-04-01 05:35:43,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-01 05:35:43,634 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 1212 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 3270 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 3706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 3270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:43,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1298 Valid, 502 Invalid, 3706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 3270 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 05:35:43,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-04-01 05:35:43,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 810. [2023-04-01 05:35:43,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 527 states have (on average 1.5502846299810247) internal successors, (817), 560 states have internal predecessors, (817), 210 states have call successors, (210), 75 states have call predecessors, (210), 72 states have return successors, (208), 198 states have call predecessors, (208), 202 states have call successors, (208) [2023-04-01 05:35:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1235 transitions. [2023-04-01 05:35:43,704 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1235 transitions. Word has length 113 [2023-04-01 05:35:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:43,704 INFO L495 AbstractCegarLoop]: Abstraction has 810 states and 1235 transitions. [2023-04-01 05:35:43,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-04-01 05:35:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1235 transitions. [2023-04-01 05:35:43,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-01 05:35:43,707 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:43,707 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-04-01 05:35:43,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 05:35:43,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:43,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:43,708 INFO L85 PathProgramCache]: Analyzing trace with hash 652637344, now seen corresponding path program 1 times [2023-04-01 05:35:43,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:43,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166078795] [2023-04-01 05:35:43,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:43,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:44,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 05:35:44,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:44,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166078795] [2023-04-01 05:35:44,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166078795] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:44,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:44,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 05:35:44,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324349639] [2023-04-01 05:35:44,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:44,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 05:35:44,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:44,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 05:35:44,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:35:44,058 INFO L87 Difference]: Start difference. First operand 810 states and 1235 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2023-04-01 05:35:44,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:44,480 INFO L93 Difference]: Finished difference Result 849 states and 1291 transitions. [2023-04-01 05:35:44,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:35:44,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) Word has length 117 [2023-04-01 05:35:44,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:44,486 INFO L225 Difference]: With dead ends: 849 [2023-04-01 05:35:44,487 INFO L226 Difference]: Without dead ends: 832 [2023-04-01 05:35:44,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:35:44,488 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 662 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:44,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1599 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 05:35:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-04-01 05:35:44,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 814. [2023-04-01 05:35:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 531 states have (on average 1.5461393596986817) internal successors, (821), 564 states have internal predecessors, (821), 210 states have call successors, (210), 75 states have call predecessors, (210), 72 states have return successors, (208), 198 states have call predecessors, (208), 202 states have call successors, (208) [2023-04-01 05:35:44,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1239 transitions. [2023-04-01 05:35:44,531 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1239 transitions. Word has length 117 [2023-04-01 05:35:44,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:44,532 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1239 transitions. [2023-04-01 05:35:44,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2023-04-01 05:35:44,533 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1239 transitions. [2023-04-01 05:35:44,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-01 05:35:44,535 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:44,535 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-04-01 05:35:44,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 05:35:44,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:44,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:44,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1730342453, now seen corresponding path program 1 times [2023-04-01 05:35:44,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:44,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032161051] [2023-04-01 05:35:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:44,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 05:35:45,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:45,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032161051] [2023-04-01 05:35:45,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032161051] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:45,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:45,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 05:35:45,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348987638] [2023-04-01 05:35:45,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:45,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 05:35:45,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:45,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 05:35:45,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:35:45,044 INFO L87 Difference]: Start difference. First operand 814 states and 1239 transitions. Second operand has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 1 states have call successors, (25) [2023-04-01 05:35:45,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:45,251 INFO L93 Difference]: Finished difference Result 835 states and 1265 transitions. [2023-04-01 05:35:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 05:35:45,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 1 states have call successors, (25) Word has length 122 [2023-04-01 05:35:45,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:45,258 INFO L225 Difference]: With dead ends: 835 [2023-04-01 05:35:45,258 INFO L226 Difference]: Without dead ends: 818 [2023-04-01 05:35:45,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:35:45,259 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 10 mSDsluCounter, 3635 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4244 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:45,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4244 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:35:45,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-04-01 05:35:45,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 814. [2023-04-01 05:35:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 531 states have (on average 1.5423728813559323) internal successors, (819), 564 states have internal predecessors, (819), 210 states have call successors, (210), 75 states have call predecessors, (210), 72 states have return successors, (208), 198 states have call predecessors, (208), 202 states have call successors, (208) [2023-04-01 05:35:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1237 transitions. [2023-04-01 05:35:45,311 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1237 transitions. Word has length 122 [2023-04-01 05:35:45,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:45,312 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1237 transitions. [2023-04-01 05:35:45,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 1 states have call successors, (25) [2023-04-01 05:35:45,312 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1237 transitions. [2023-04-01 05:35:45,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-04-01 05:35:45,315 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:45,315 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-04-01 05:35:45,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 05:35:45,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:45,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:45,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1240685095, now seen corresponding path program 1 times [2023-04-01 05:35:45,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:45,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764996122] [2023-04-01 05:35:45,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:45,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:45,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:35:45,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:45,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764996122] [2023-04-01 05:35:45,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764996122] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:45,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:45,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 05:35:45,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238604630] [2023-04-01 05:35:45,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:45,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:35:45,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:45,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:35:45,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:35:45,662 INFO L87 Difference]: Start difference. First operand 814 states and 1237 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:35:47,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:47,042 INFO L93 Difference]: Finished difference Result 2434 states and 3792 transitions. [2023-04-01 05:35:47,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:35:47,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 137 [2023-04-01 05:35:47,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:47,054 INFO L225 Difference]: With dead ends: 2434 [2023-04-01 05:35:47,055 INFO L226 Difference]: Without dead ends: 1662 [2023-04-01 05:35:47,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:35:47,059 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1219 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:47,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 507 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 05:35:47,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2023-04-01 05:35:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1564. [2023-04-01 05:35:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1040 states have (on average 1.5557692307692308) internal successors, (1618), 1104 states have internal predecessors, (1618), 388 states have call successors, (388), 129 states have call predecessors, (388), 135 states have return successors, (417), 364 states have call predecessors, (417), 379 states have call successors, (417) [2023-04-01 05:35:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2423 transitions. [2023-04-01 05:35:47,169 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2423 transitions. Word has length 137 [2023-04-01 05:35:47,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:47,174 INFO L495 AbstractCegarLoop]: Abstraction has 1564 states and 2423 transitions. [2023-04-01 05:35:47,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:35:47,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2423 transitions. [2023-04-01 05:35:47,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-01 05:35:47,179 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:47,179 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-04-01 05:35:47,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 05:35:47,179 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:47,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:47,180 INFO L85 PathProgramCache]: Analyzing trace with hash 192159624, now seen corresponding path program 1 times [2023-04-01 05:35:47,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:47,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460415278] [2023-04-01 05:35:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:47,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:35:47,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:47,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460415278] [2023-04-01 05:35:47,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460415278] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:47,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:47,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 05:35:47,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464492363] [2023-04-01 05:35:47,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:47,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:35:47,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:47,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:35:47,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:35:47,559 INFO L87 Difference]: Start difference. First operand 1564 states and 2423 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:35:49,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:49,034 INFO L93 Difference]: Finished difference Result 4629 states and 7328 transitions. [2023-04-01 05:35:49,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:35:49,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 138 [2023-04-01 05:35:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:49,067 INFO L225 Difference]: With dead ends: 4629 [2023-04-01 05:35:49,067 INFO L226 Difference]: Without dead ends: 3110 [2023-04-01 05:35:49,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:35:49,079 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1215 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:49,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 512 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 05:35:49,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2023-04-01 05:35:49,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 2989. [2023-04-01 05:35:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2989 states, 2016 states have (on average 1.5629960317460319) internal successors, (3151), 2144 states have internal predecessors, (3151), 710 states have call successors, (710), 237 states have call predecessors, (710), 262 states have return successors, (835), 665 states have call predecessors, (835), 699 states have call successors, (835) [2023-04-01 05:35:49,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 4696 transitions. [2023-04-01 05:35:49,342 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 4696 transitions. Word has length 138 [2023-04-01 05:35:49,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:49,342 INFO L495 AbstractCegarLoop]: Abstraction has 2989 states and 4696 transitions. [2023-04-01 05:35:49,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:35:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 4696 transitions. [2023-04-01 05:35:49,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-04-01 05:35:49,345 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:49,345 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-04-01 05:35:49,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 05:35:49,346 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:49,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:49,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1660676859, now seen corresponding path program 1 times [2023-04-01 05:35:49,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:49,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177892022] [2023-04-01 05:35:49,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:49,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:49,688 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:35:49,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:49,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177892022] [2023-04-01 05:35:49,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177892022] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:49,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:49,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 05:35:49,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909339854] [2023-04-01 05:35:49,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:49,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:35:49,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:49,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:35:49,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:35:49,691 INFO L87 Difference]: Start difference. First operand 2989 states and 4696 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:35:51,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:51,443 INFO L93 Difference]: Finished difference Result 8952 states and 14476 transitions. [2023-04-01 05:35:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:35:51,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 139 [2023-04-01 05:35:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:51,495 INFO L225 Difference]: With dead ends: 8952 [2023-04-01 05:35:51,495 INFO L226 Difference]: Without dead ends: 6014 [2023-04-01 05:35:51,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:35:51,517 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1212 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:51,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 517 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 05:35:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2023-04-01 05:35:51,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 5848. [2023-04-01 05:35:51,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5848 states, 3971 states have (on average 1.5645933014354068) internal successors, (6213), 4231 states have internal predecessors, (6213), 1350 states have call successors, (1350), 453 states have call predecessors, (1350), 526 states have return successors, (1795), 1269 states have call predecessors, (1795), 1335 states have call successors, (1795) [2023-04-01 05:35:51,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5848 states to 5848 states and 9358 transitions. [2023-04-01 05:35:51,982 INFO L78 Accepts]: Start accepts. Automaton has 5848 states and 9358 transitions. Word has length 139 [2023-04-01 05:35:51,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:51,983 INFO L495 AbstractCegarLoop]: Abstraction has 5848 states and 9358 transitions. [2023-04-01 05:35:51,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:35:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5848 states and 9358 transitions. [2023-04-01 05:35:51,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-01 05:35:51,986 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:51,986 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-04-01 05:35:51,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 05:35:51,986 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:51,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:51,987 INFO L85 PathProgramCache]: Analyzing trace with hash -59925206, now seen corresponding path program 1 times [2023-04-01 05:35:51,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:51,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213400850] [2023-04-01 05:35:51,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:51,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:35:52,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:52,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213400850] [2023-04-01 05:35:52,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213400850] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:52,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:52,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 05:35:52,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997753742] [2023-04-01 05:35:52,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:52,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:35:52,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:52,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:35:52,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:35:52,420 INFO L87 Difference]: Start difference. First operand 5848 states and 9358 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:35:54,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:54,432 INFO L93 Difference]: Finished difference Result 17623 states and 29503 transitions. [2023-04-01 05:35:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:35:54,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 140 [2023-04-01 05:35:54,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:54,529 INFO L225 Difference]: With dead ends: 17623 [2023-04-01 05:35:54,529 INFO L226 Difference]: Without dead ends: 11838 [2023-04-01 05:35:54,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:35:54,567 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 1209 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:54,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 522 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 05:35:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11838 states. [2023-04-01 05:35:55,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11838 to 11583. [2023-04-01 05:35:55,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11583 states, 7886 states have (on average 1.5631498858737003) internal successors, (12327), 8418 states have internal predecessors, (12327), 2622 states have call successors, (2622), 885 states have call predecessors, (2622), 1074 states have return successors, (4143), 2481 states have call predecessors, (4143), 2599 states have call successors, (4143) [2023-04-01 05:35:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11583 states to 11583 states and 19092 transitions. [2023-04-01 05:35:55,641 INFO L78 Accepts]: Start accepts. Automaton has 11583 states and 19092 transitions. Word has length 140 [2023-04-01 05:35:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:55,642 INFO L495 AbstractCegarLoop]: Abstraction has 11583 states and 19092 transitions. [2023-04-01 05:35:55,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:35:55,643 INFO L276 IsEmpty]: Start isEmpty. Operand 11583 states and 19092 transitions. [2023-04-01 05:35:55,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-01 05:35:55,645 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:55,646 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-04-01 05:35:55,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 05:35:55,646 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:55,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:55,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1858977763, now seen corresponding path program 1 times [2023-04-01 05:35:55,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:55,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140727779] [2023-04-01 05:35:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:55,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:35:56,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:56,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140727779] [2023-04-01 05:35:56,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140727779] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:56,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:56,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 05:35:56,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108255536] [2023-04-01 05:35:56,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:56,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:35:56,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:56,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:35:56,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:35:56,014 INFO L87 Difference]: Start difference. First operand 11583 states and 19092 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:35:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:58,758 INFO L93 Difference]: Finished difference Result 35042 states and 62199 transitions. [2023-04-01 05:35:58,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:35:58,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 141 [2023-04-01 05:35:58,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:58,914 INFO L225 Difference]: With dead ends: 35042 [2023-04-01 05:35:58,914 INFO L226 Difference]: Without dead ends: 23534 [2023-04-01 05:35:58,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:35:58,978 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1206 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:58,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 528 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 05:35:59,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23534 states. [2023-04-01 05:36:00,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23534 to 22948. [2023-04-01 05:36:01,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22948 states, 15668 states have (on average 1.5636967066632628) internal successors, (24500), 16730 states have internal predecessors, (24500), 5149 states have call successors, (5149), 1746 states have call predecessors, (5149), 2130 states have return successors, (9812), 4865 states have call predecessors, (9812), 5111 states have call successors, (9812) [2023-04-01 05:36:01,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22948 states to 22948 states and 39461 transitions. [2023-04-01 05:36:01,126 INFO L78 Accepts]: Start accepts. Automaton has 22948 states and 39461 transitions. Word has length 141 [2023-04-01 05:36:01,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:36:01,127 INFO L495 AbstractCegarLoop]: Abstraction has 22948 states and 39461 transitions. [2023-04-01 05:36:01,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 4 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:36:01,128 INFO L276 IsEmpty]: Start isEmpty. Operand 22948 states and 39461 transitions. [2023-04-01 05:36:01,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-04-01 05:36:01,138 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:36:01,138 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:36:01,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 05:36:01,138 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:36:01,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:36:01,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1582259276, now seen corresponding path program 1 times [2023-04-01 05:36:01,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:36:01,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372472776] [2023-04-01 05:36:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:01,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:36:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-04-01 05:36:01,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:36:01,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372472776] [2023-04-01 05:36:01,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372472776] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:36:01,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:36:01,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 05:36:01,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982847166] [2023-04-01 05:36:01,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:36:01,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:36:01,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:36:01,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:36:01,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:36:01,416 INFO L87 Difference]: Start difference. First operand 22948 states and 39461 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2023-04-01 05:36:03,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:36:03,125 INFO L93 Difference]: Finished difference Result 46275 states and 82613 transitions. [2023-04-01 05:36:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:36:03,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) Word has length 194 [2023-04-01 05:36:03,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:36:03,266 INFO L225 Difference]: With dead ends: 46275 [2023-04-01 05:36:03,267 INFO L226 Difference]: Without dead ends: 23370 [2023-04-01 05:36:03,331 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 [2023-04-01 05:36:03,332 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 10 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:36:03,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2415 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:36:03,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23370 states. [2023-04-01 05:36:05,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23370 to 23220. [2023-04-01 05:36:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23220 states, 15860 states have (on average 1.5568726355611602) internal successors, (24692), 16922 states have internal predecessors, (24692), 5165 states have call successors, (5165), 1746 states have call predecessors, (5165), 2194 states have return successors, (10119), 4945 states have call predecessors, (10119), 5127 states have call successors, (10119) [2023-04-01 05:36:05,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23220 states to 23220 states and 39976 transitions. [2023-04-01 05:36:05,394 INFO L78 Accepts]: Start accepts. Automaton has 23220 states and 39976 transitions. Word has length 194 [2023-04-01 05:36:05,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:36:05,395 INFO L495 AbstractCegarLoop]: Abstraction has 23220 states and 39976 transitions. [2023-04-01 05:36:05,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (38), 3 states have call predecessors, (38), 2 states have call successors, (38) [2023-04-01 05:36:05,395 INFO L276 IsEmpty]: Start isEmpty. Operand 23220 states and 39976 transitions. [2023-04-01 05:36:05,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-04-01 05:36:05,405 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:36:05,405 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:36:05,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 05:36:05,406 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:36:05,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:36:05,406 INFO L85 PathProgramCache]: Analyzing trace with hash -936209325, now seen corresponding path program 1 times [2023-04-01 05:36:05,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:36:05,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641639143] [2023-04-01 05:36:05,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:05,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:36:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-04-01 05:36:05,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:36:05,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641639143] [2023-04-01 05:36:05,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641639143] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:36:05,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720764287] [2023-04-01 05:36:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:05,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:36:05,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:36:05,788 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:36:05,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 05:36:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:06,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 05:36:06,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:36:06,512 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-04-01 05:36:06,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:36:06,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720764287] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:36:06,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:36:06,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-04-01 05:36:06,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526787476] [2023-04-01 05:36:06,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:36:06,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:36:06,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:36:06,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:36:06,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:36:06,514 INFO L87 Difference]: Start difference. First operand 23220 states and 39976 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-04-01 05:36:08,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:36:08,334 INFO L93 Difference]: Finished difference Result 48893 states and 87640 transitions. [2023-04-01 05:36:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:36:08,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 199 [2023-04-01 05:36:08,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:36:08,511 INFO L225 Difference]: With dead ends: 48893 [2023-04-01 05:36:08,511 INFO L226 Difference]: Without dead ends: 25716 [2023-04-01 05:36:08,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-01 05:36:08,596 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 213 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:36:08,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1605 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:36:08,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25716 states. [2023-04-01 05:36:10,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25716 to 25716. [2023-04-01 05:36:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25716 states, 18292 states have (on average 1.6052919308987537) internal successors, (29364), 19354 states have internal predecessors, (29364), 5165 states have call successors, (5165), 1810 states have call predecessors, (5165), 2258 states have return successors, (10119), 4945 states have call predecessors, (10119), 5127 states have call successors, (10119) [2023-04-01 05:36:10,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25716 states to 25716 states and 44648 transitions. [2023-04-01 05:36:10,492 INFO L78 Accepts]: Start accepts. Automaton has 25716 states and 44648 transitions. Word has length 199 [2023-04-01 05:36:10,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:36:10,492 INFO L495 AbstractCegarLoop]: Abstraction has 25716 states and 44648 transitions. [2023-04-01 05:36:10,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-04-01 05:36:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 25716 states and 44648 transitions. [2023-04-01 05:36:10,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-04-01 05:36:10,506 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:36:10,506 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:36:10,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 05:36:10,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-01 05:36:10,719 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:36:10,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:36:10,720 INFO L85 PathProgramCache]: Analyzing trace with hash -719841288, now seen corresponding path program 1 times [2023-04-01 05:36:10,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:36:10,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393060021] [2023-04-01 05:36:10,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:10,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:36:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-04-01 05:36:11,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:36:11,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393060021] [2023-04-01 05:36:11,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393060021] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:36:11,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45536392] [2023-04-01 05:36:11,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:11,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:36:11,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:36:11,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:36:11,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 05:36:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:11,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 05:36:11,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:36:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-04-01 05:36:11,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:36:11,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45536392] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:36:11,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:36:11,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-04-01 05:36:11,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106695683] [2023-04-01 05:36:11,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:36:11,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:36:11,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:36:11,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:36:11,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:36:11,776 INFO L87 Difference]: Start difference. First operand 25716 states and 44648 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-04-01 05:36:13,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:36:13,666 INFO L93 Difference]: Finished difference Result 53885 states and 96918 transitions. [2023-04-01 05:36:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:36:13,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 204 [2023-04-01 05:36:13,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:36:13,833 INFO L225 Difference]: With dead ends: 53885 [2023-04-01 05:36:13,833 INFO L226 Difference]: Without dead ends: 28212 [2023-04-01 05:36:13,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:36:13,907 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 211 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:36:13,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1605 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:36:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28212 states. [2023-04-01 05:36:15,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28212 to 28212. [2023-04-01 05:36:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28212 states, 20724 states have (on average 1.642347037251496) internal successors, (34036), 21786 states have internal predecessors, (34036), 5165 states have call successors, (5165), 1874 states have call predecessors, (5165), 2322 states have return successors, (10119), 4945 states have call predecessors, (10119), 5127 states have call successors, (10119) [2023-04-01 05:36:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28212 states to 28212 states and 49320 transitions. [2023-04-01 05:36:15,656 INFO L78 Accepts]: Start accepts. Automaton has 28212 states and 49320 transitions. Word has length 204 [2023-04-01 05:36:15,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:36:15,657 INFO L495 AbstractCegarLoop]: Abstraction has 28212 states and 49320 transitions. [2023-04-01 05:36:15,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-04-01 05:36:15,657 INFO L276 IsEmpty]: Start isEmpty. Operand 28212 states and 49320 transitions. [2023-04-01 05:36:15,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-04-01 05:36:15,670 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:36:15,670 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:36:15,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 05:36:15,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 05:36:15,882 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:36:15,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:36:15,883 INFO L85 PathProgramCache]: Analyzing trace with hash -76063304, now seen corresponding path program 1 times [2023-04-01 05:36:15,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:36:15,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569087146] [2023-04-01 05:36:15,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:15,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:36:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 05:36:16,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:36:16,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569087146] [2023-04-01 05:36:16,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569087146] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:36:16,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657941660] [2023-04-01 05:36:16,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:16,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:36:16,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:36:16,169 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:36:16,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 05:36:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:16,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 3087 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 05:36:16,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:36:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-01 05:36:16,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:36:16,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657941660] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:36:16,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:36:16,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-04-01 05:36:16,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109228250] [2023-04-01 05:36:16,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:36:16,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:36:16,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:36:16,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:36:16,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:36:16,796 INFO L87 Difference]: Start difference. First operand 28212 states and 49320 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-04-01 05:36:18,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:36:18,418 INFO L93 Difference]: Finished difference Result 58877 states and 106196 transitions. [2023-04-01 05:36:18,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:36:18,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 208 [2023-04-01 05:36:18,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:36:18,556 INFO L225 Difference]: With dead ends: 58877 [2023-04-01 05:36:18,556 INFO L226 Difference]: Without dead ends: 30708 [2023-04-01 05:36:18,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:36:18,627 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 209 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:36:18,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1605 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:36:18,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30708 states. [2023-04-01 05:36:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30708 to 30708. [2023-04-01 05:36:20,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30708 states, 23156 states have (on average 1.671618586975298) internal successors, (38708), 24218 states have internal predecessors, (38708), 5165 states have call successors, (5165), 1938 states have call predecessors, (5165), 2386 states have return successors, (10119), 4945 states have call predecessors, (10119), 5127 states have call successors, (10119) [2023-04-01 05:36:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30708 states to 30708 states and 53992 transitions. [2023-04-01 05:36:20,206 INFO L78 Accepts]: Start accepts. Automaton has 30708 states and 53992 transitions. Word has length 208 [2023-04-01 05:36:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:36:20,206 INFO L495 AbstractCegarLoop]: Abstraction has 30708 states and 53992 transitions. [2023-04-01 05:36:20,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-04-01 05:36:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 30708 states and 53992 transitions. [2023-04-01 05:36:20,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-04-01 05:36:20,221 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:36:20,222 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:36:20,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 05:36:20,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:36:20,434 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:36:20,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:36:20,434 INFO L85 PathProgramCache]: Analyzing trace with hash 162275059, now seen corresponding path program 1 times [2023-04-01 05:36:20,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:36:20,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334490010] [2023-04-01 05:36:20,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:20,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:36:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-04-01 05:36:20,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:36:20,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334490010] [2023-04-01 05:36:20,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334490010] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:36:20,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405980831] [2023-04-01 05:36:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:36:20,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:36:20,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:36:20,903 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:36:20,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 05:36:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:36:21,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 3090 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 05:36:21,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:36:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-01 05:36:21,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:36:21,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405980831] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:36:21,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:36:21,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-04-01 05:36:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315533985] [2023-04-01 05:36:21,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:36:21,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:36:21,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:36:21,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:36:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:36:21,466 INFO L87 Difference]: Start difference. First operand 30708 states and 53992 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39)