/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_spec9_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:57:12,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:57:12,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:57:12,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:57:12,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:57:12,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:57:12,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:57:12,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:57:12,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:57:12,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:57:12,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:57:12,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:57:12,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:57:12,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:57:12,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:57:12,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:57:12,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:57:12,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:57:12,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:57:12,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:57:12,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:57:12,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:57:12,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:57:12,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:57:12,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:57:12,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:57:12,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:57:12,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:57:12,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:57:12,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:57:12,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:57:12,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:57:12,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:57:12,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:57:12,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:57:12,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:57:12,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:57:12,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:57:12,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:57:12,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:57:12,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:57:12,724 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 [2023-04-02 23:57:12,747 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:57:12,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:57:12,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:57:12,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:57:12,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:57:12,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:57:12,749 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:57:12,749 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:57:12,749 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:57:12,749 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:57:12,749 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:57:12,749 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:57:12,750 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:57:12,750 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:57:12,750 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:57:12,750 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:57:12,750 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:57:12,750 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:57:12,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:57:12,751 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:57:12,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:57:12,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:57:12,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:57:12,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:57:12,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:57:12,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:57:12,751 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:57:12,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:57:12,751 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:57:12,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:57:12,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:57:12,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:57:12,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:57:12,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:57:12,752 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:57:12,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:57:12,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:57:12,752 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:57:12,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:57:12,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:57:12,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:57:12,753 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:57:12,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:57:12,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:57:12,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:57:12,957 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:57:12,957 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:57:12,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec9_productSimulator.cil.c [2023-04-02 23:57:13,853 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:57:14,157 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:57:14,158 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec9_productSimulator.cil.c [2023-04-02 23:57:14,174 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20465d7c3/194f53adef6d4f438d9f11ef7767edb9/FLAG2e58a2b7c [2023-04-02 23:57:14,193 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20465d7c3/194f53adef6d4f438d9f11ef7767edb9 [2023-04-02 23:57:14,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:57:14,196 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:57:14,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:57:14,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:57:14,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:57:14,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:57:14" (1/1) ... [2023-04-02 23:57:14,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b82cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:57:14, skipping insertion in model container [2023-04-02 23:57:14,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:57:14" (1/1) ... [2023-04-02 23:57:14,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:57:14,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:57:14,534 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_spec9_productSimulator.cil.c[36997,37010] [2023-04-02 23:57:14,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:57:14,625 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:57:14,656 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_spec9_productSimulator.cil.c[36997,37010] [2023-04-02 23:57:14,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:57:14,703 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:57:14,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:57:14 WrapperNode [2023-04-02 23:57:14,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:57:14,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:57:14,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:57:14,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:57:14,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:57:14" (1/1) ... [2023-04-02 23:57:14,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:57:14" (1/1) ... [2023-04-02 23:57:14,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:57:14" (1/1) ... [2023-04-02 23:57:14,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:57:14" (1/1) ... [2023-04-02 23:57:14,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:57:14" (1/1) ... [2023-04-02 23:57:14,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:57:14" (1/1) ... [2023-04-02 23:57:14,784 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:57:14" (1/1) ... [2023-04-02 23:57:14,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:57:14" (1/1) ... [2023-04-02 23:57:14,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:57:14,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:57:14,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:57:14,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:57:14,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:57:14" (1/1) ... [2023-04-02 23:57:14,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:57:14,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:57:14,838 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) [2023-04-02 23:57:14,840 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 [2023-04-02 23:57:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:57:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:57:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 23:57:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:57:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 23:57:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 23:57:14,869 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 23:57:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 23:57:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 23:57:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 23:57:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 23:57:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 23:57:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 23:57:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 23:57:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 23:57:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 23:57:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 23:57:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 23:57:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 23:57:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 23:57:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:57:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 23:57:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 23:57:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 23:57:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 23:57:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 23:57:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 23:57:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 23:57:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 23:57:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 23:57:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 23:57:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 23:57:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 23:57:14,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 23:57:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 23:57:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 23:57:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 23:57:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2023-04-02 23:57:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2023-04-02 23:57:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2023-04-02 23:57:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2023-04-02 23:57:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 23:57:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 23:57:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 23:57:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 23:57:14,872 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 23:57:14,873 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 23:57:14,873 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 23:57:14,873 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 23:57:14,873 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 23:57:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 23:57:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 23:57:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2023-04-02 23:57:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2023-04-02 23:57:14,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 23:57:14,875 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2023-04-02 23:57:14,875 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2023-04-02 23:57:14,875 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 23:57:14,876 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2023-04-02 23:57:14,876 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2023-04-02 23:57:14,876 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2023-04-02 23:57:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2023-04-02 23:57:14,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 23:57:14,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 23:57:14,878 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 23:57:14,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2023-04-02 23:57:14,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2023-04-02 23:57:14,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2023-04-02 23:57:14,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2023-04-02 23:57:14,879 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 23:57:14,879 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 23:57:14,879 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 23:57:14,879 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2023-04-02 23:57:14,879 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2023-04-02 23:57:14,879 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 23:57:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2023-04-02 23:57:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2023-04-02 23:57:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 23:57:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 23:57:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-04-02 23:57:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-04-02 23:57:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:57:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:57:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:57:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:57:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:57:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 23:57:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 23:57:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 23:57:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 23:57:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 23:57:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 23:57:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 23:57:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 23:57:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 23:57:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 23:57:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 23:57:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 23:57:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 23:57:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 23:57:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 23:57:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 23:57:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 23:57:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 23:57:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 23:57:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 23:57:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 23:57:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 23:57:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 23:57:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2023-04-02 23:57:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2023-04-02 23:57:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 23:57:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 23:57:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 23:57:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 23:57:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 23:57:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 23:57:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 23:57:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 23:57:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 23:57:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 23:57:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 23:57:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 23:57:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 23:57:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 23:57:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 23:57:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2023-04-02 23:57:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2023-04-02 23:57:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2023-04-02 23:57:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2023-04-02 23:57:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2023-04-02 23:57:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 23:57:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:57:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:57:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:57:15,178 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:57:15,181 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:57:16,210 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:57:16,836 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:57:16,836 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 23:57:16,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:57:16 BoogieIcfgContainer [2023-04-02 23:57:16,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:57:16,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:57:16,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:57:16,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:57:16,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:57:14" (1/3) ... [2023-04-02 23:57:16,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aba86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:57:16, skipping insertion in model container [2023-04-02 23:57:16,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:57:14" (2/3) ... [2023-04-02 23:57:16,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aba86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:57:16, skipping insertion in model container [2023-04-02 23:57:16,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:57:16" (3/3) ... [2023-04-02 23:57:16,846 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_productSimulator.cil.c [2023-04-02 23:57:16,860 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:57:16,860 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:57:16,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:57:16,922 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;@4c7b11a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:57:16,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:57:16,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 695 states, 403 states have (on average 1.4416873449131513) internal successors, (581), 437 states have internal predecessors, (581), 210 states have call successors, (210), 69 states have call predecessors, (210), 69 states have return successors, (210), 195 states have call predecessors, (210), 210 states have call successors, (210) [2023-04-02 23:57:16,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 23:57:16,955 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:16,956 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:57:16,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:16,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:16,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1511909104, now seen corresponding path program 1 times [2023-04-02 23:57:16,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:16,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489055761] [2023-04-02 23:57:16,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:16,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-02 23:57:17,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:17,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489055761] [2023-04-02 23:57:17,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489055761] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:17,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:17,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:57:17,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394117890] [2023-04-02 23:57:17,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:17,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:57:17,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:17,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:57:17,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:57:17,611 INFO L87 Difference]: Start difference. First operand has 695 states, 403 states have (on average 1.4416873449131513) internal successors, (581), 437 states have internal predecessors, (581), 210 states have call successors, (210), 69 states have call predecessors, (210), 69 states have return successors, (210), 195 states have call predecessors, (210), 210 states have call successors, (210) Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 23:57:17,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:57:17,923 INFO L93 Difference]: Finished difference Result 1096 states and 1595 transitions. [2023-04-02 23:57:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:57:17,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 100 [2023-04-02 23:57:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:57:17,944 INFO L225 Difference]: With dead ends: 1096 [2023-04-02 23:57:17,945 INFO L226 Difference]: Without dead ends: 553 [2023-04-02 23:57:17,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:57:17,952 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 3 mSDsluCounter, 3030 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:57:17,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3789 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:57:17,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-04-02 23:57:18,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2023-04-02 23:57:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 342 states have (on average 1.4649122807017543) internal successors, (501), 367 states have internal predecessors, (501), 151 states have call successors, (151), 63 states have call predecessors, (151), 59 states have return successors, (143), 135 states have call predecessors, (143), 143 states have call successors, (143) [2023-04-02 23:57:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 795 transitions. [2023-04-02 23:57:18,011 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 795 transitions. Word has length 100 [2023-04-02 23:57:18,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:57:18,012 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 795 transitions. [2023-04-02 23:57:18,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 23:57:18,012 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 795 transitions. [2023-04-02 23:57:18,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 23:57:18,015 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:18,015 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:57:18,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 23:57:18,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:18,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:18,016 INFO L85 PathProgramCache]: Analyzing trace with hash 910728103, now seen corresponding path program 1 times [2023-04-02 23:57:18,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:18,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802572243] [2023-04-02 23:57:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:18,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-02 23:57:18,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:18,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802572243] [2023-04-02 23:57:18,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802572243] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:18,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:18,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 23:57:18,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132287558] [2023-04-02 23:57:18,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:18,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 23:57:18,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 23:57:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 23:57:18,164 INFO L87 Difference]: Start difference. First operand 553 states and 795 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2023-04-02 23:57:18,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:57:18,974 INFO L93 Difference]: Finished difference Result 1553 states and 2267 transitions. [2023-04-02 23:57:18,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 23:57:18,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 102 [2023-04-02 23:57:18,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:57:18,980 INFO L225 Difference]: With dead ends: 1553 [2023-04-02 23:57:18,980 INFO L226 Difference]: Without dead ends: 1059 [2023-04-02 23:57:18,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 23:57:18,983 INFO L413 NwaCegarLoop]: 1440 mSDtfsCounter, 1498 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 23:57:18,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 2333 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 23:57:18,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2023-04-02 23:57:19,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1046. [2023-04-02 23:57:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 657 states have (on average 1.4672754946727549) internal successors, (964), 700 states have internal predecessors, (964), 277 states have call successors, (277), 115 states have call predecessors, (277), 111 states have return successors, (269), 255 states have call predecessors, (269), 268 states have call successors, (269) [2023-04-02 23:57:19,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1510 transitions. [2023-04-02 23:57:19,039 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1510 transitions. Word has length 102 [2023-04-02 23:57:19,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:57:19,040 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1510 transitions. [2023-04-02 23:57:19,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2023-04-02 23:57:19,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1510 transitions. [2023-04-02 23:57:19,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 23:57:19,046 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:19,047 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:57:19,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 23:57:19,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:19,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:19,048 INFO L85 PathProgramCache]: Analyzing trace with hash -960075505, now seen corresponding path program 1 times [2023-04-02 23:57:19,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:19,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338794013] [2023-04-02 23:57:19,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:19,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-02 23:57:19,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:19,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338794013] [2023-04-02 23:57:19,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338794013] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:19,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:19,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:57:19,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200185394] [2023-04-02 23:57:19,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:19,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:57:19,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:19,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:57:19,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:57:19,608 INFO L87 Difference]: Start difference. First operand 1046 states and 1510 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 6 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2023-04-02 23:57:21,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:57:21,405 INFO L93 Difference]: Finished difference Result 2685 states and 4047 transitions. [2023-04-02 23:57:21,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:57:21,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 6 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 103 [2023-04-02 23:57:21,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:57:21,418 INFO L225 Difference]: With dead ends: 2685 [2023-04-02 23:57:21,418 INFO L226 Difference]: Without dead ends: 2197 [2023-04-02 23:57:21,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:57:21,421 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1530 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 23:57:21,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 606 Invalid, 2884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 23:57:21,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2023-04-02 23:57:21,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 2162. [2023-04-02 23:57:21,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 1349 states have (on average 1.4788732394366197) internal successors, (1995), 1447 states have internal predecessors, (1995), 598 states have call successors, (598), 206 states have call predecessors, (598), 214 states have return successors, (691), 576 states have call predecessors, (691), 589 states have call successors, (691) [2023-04-02 23:57:21,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 3284 transitions. [2023-04-02 23:57:21,514 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 3284 transitions. Word has length 103 [2023-04-02 23:57:21,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:57:21,514 INFO L495 AbstractCegarLoop]: Abstraction has 2162 states and 3284 transitions. [2023-04-02 23:57:21,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 6 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2023-04-02 23:57:21,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 3284 transitions. [2023-04-02 23:57:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-02 23:57:21,519 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:21,519 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:57:21,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 23:57:21,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:21,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:21,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1287989370, now seen corresponding path program 1 times [2023-04-02 23:57:21,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:21,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512130072] [2023-04-02 23:57:21,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:21,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-02 23:57:22,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:22,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512130072] [2023-04-02 23:57:22,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512130072] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:22,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:22,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 23:57:22,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468299841] [2023-04-02 23:57:22,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:22,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 23:57:22,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:22,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 23:57:22,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-04-02 23:57:22,081 INFO L87 Difference]: Start difference. First operand 2162 states and 3284 transitions. Second operand has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 9 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (30), 6 states have call predecessors, (30), 2 states have call successors, (30) [2023-04-02 23:57:22,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:57:22,411 INFO L93 Difference]: Finished difference Result 4464 states and 6921 transitions. [2023-04-02 23:57:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 23:57:22,411 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 9 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (30), 6 states have call predecessors, (30), 2 states have call successors, (30) Word has length 144 [2023-04-02 23:57:22,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:57:22,428 INFO L225 Difference]: With dead ends: 4464 [2023-04-02 23:57:22,428 INFO L226 Difference]: Without dead ends: 2396 [2023-04-02 23:57:22,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-04-02 23:57:22,444 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 34 mSDsluCounter, 8907 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 9723 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:57:22,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 9723 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:57:22,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2023-04-02 23:57:22,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2202. [2023-04-02 23:57:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 1377 states have (on average 1.4691358024691359) internal successors, (2023), 1475 states have internal predecessors, (2023), 598 states have call successors, (598), 206 states have call predecessors, (598), 226 states have return successors, (715), 588 states have call predecessors, (715), 589 states have call successors, (715) [2023-04-02 23:57:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 3336 transitions. [2023-04-02 23:57:22,601 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 3336 transitions. Word has length 144 [2023-04-02 23:57:22,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:57:22,602 INFO L495 AbstractCegarLoop]: Abstraction has 2202 states and 3336 transitions. [2023-04-02 23:57:22,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 9 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (30), 6 states have call predecessors, (30), 2 states have call successors, (30) [2023-04-02 23:57:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 3336 transitions. [2023-04-02 23:57:22,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-02 23:57:22,610 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:22,611 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2023-04-02 23:57:22,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 23:57:22,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:22,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:22,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1004884753, now seen corresponding path program 1 times [2023-04-02 23:57:22,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:22,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749343868] [2023-04-02 23:57:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:22,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-02 23:57:22,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:22,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749343868] [2023-04-02 23:57:22,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749343868] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:22,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:22,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 23:57:22,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187556905] [2023-04-02 23:57:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:22,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 23:57:22,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:22,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 23:57:22,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 23:57:22,737 INFO L87 Difference]: Start difference. First operand 2202 states and 3336 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-04-02 23:57:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:57:23,600 INFO L93 Difference]: Finished difference Result 6283 states and 9713 transitions. [2023-04-02 23:57:23,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 23:57:23,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 147 [2023-04-02 23:57:23,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:57:23,625 INFO L225 Difference]: With dead ends: 6283 [2023-04-02 23:57:23,626 INFO L226 Difference]: Without dead ends: 4175 [2023-04-02 23:57:23,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 23:57:23,638 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1416 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 23:57:23,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 2375 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 23:57:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2023-04-02 23:57:23,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 4134. [2023-04-02 23:57:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4134 states, 2606 states have (on average 1.483499616270146) internal successors, (3866), 2794 states have internal predecessors, (3866), 1119 states have call successors, (1119), 383 states have call predecessors, (1119), 408 states have return successors, (1347), 1092 states have call predecessors, (1347), 1110 states have call successors, (1347) [2023-04-02 23:57:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4134 states to 4134 states and 6332 transitions. [2023-04-02 23:57:23,844 INFO L78 Accepts]: Start accepts. Automaton has 4134 states and 6332 transitions. Word has length 147 [2023-04-02 23:57:23,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:57:23,844 INFO L495 AbstractCegarLoop]: Abstraction has 4134 states and 6332 transitions. [2023-04-02 23:57:23,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-04-02 23:57:23,844 INFO L276 IsEmpty]: Start isEmpty. Operand 4134 states and 6332 transitions. [2023-04-02 23:57:23,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-04-02 23:57:23,853 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:23,854 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2023-04-02 23:57:23,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 23:57:23,854 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:23,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:23,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1984695772, now seen corresponding path program 1 times [2023-04-02 23:57:23,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:23,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402245641] [2023-04-02 23:57:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:23,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-02 23:57:23,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:23,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402245641] [2023-04-02 23:57:23,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402245641] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:23,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:23,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 23:57:23,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217303179] [2023-04-02 23:57:23,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:23,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 23:57:23,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:23,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 23:57:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 23:57:23,970 INFO L87 Difference]: Start difference. First operand 4134 states and 6332 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2023-04-02 23:57:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:57:24,861 INFO L93 Difference]: Finished difference Result 11961 states and 18681 transitions. [2023-04-02 23:57:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 23:57:24,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 148 [2023-04-02 23:57:24,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:57:24,904 INFO L225 Difference]: With dead ends: 11961 [2023-04-02 23:57:24,904 INFO L226 Difference]: Without dead ends: 7942 [2023-04-02 23:57:24,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 23:57:24,929 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1458 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 23:57:24,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 2310 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 23:57:24,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7942 states. [2023-04-02 23:57:25,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7942 to 7921. [2023-04-02 23:57:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 5010 states have (on average 1.4904191616766467) internal successors, (7467), 5383 states have internal predecessors, (7467), 2134 states have call successors, (2134), 734 states have call predecessors, (2134), 776 states have return successors, (2576), 2075 states have call predecessors, (2576), 2123 states have call successors, (2576) [2023-04-02 23:57:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 12177 transitions. [2023-04-02 23:57:25,365 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 12177 transitions. Word has length 148 [2023-04-02 23:57:25,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:57:25,365 INFO L495 AbstractCegarLoop]: Abstraction has 7921 states and 12177 transitions. [2023-04-02 23:57:25,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2023-04-02 23:57:25,366 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 12177 transitions. [2023-04-02 23:57:25,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-04-02 23:57:25,384 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:25,385 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:57:25,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 23:57:25,385 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:25,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:25,385 INFO L85 PathProgramCache]: Analyzing trace with hash -471826672, now seen corresponding path program 1 times [2023-04-02 23:57:25,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:25,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132843767] [2023-04-02 23:57:25,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:25,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:25,687 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-02 23:57:25,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:25,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132843767] [2023-04-02 23:57:25,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132843767] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:25,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:25,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 23:57:25,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814186649] [2023-04-02 23:57:25,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:25,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 23:57:25,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:25,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 23:57:25,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:57:25,689 INFO L87 Difference]: Start difference. First operand 7921 states and 12177 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-02 23:57:26,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:57:26,234 INFO L93 Difference]: Finished difference Result 9897 states and 15234 transitions. [2023-04-02 23:57:26,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:57:26,235 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) Word has length 148 [2023-04-02 23:57:26,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:57:26,286 INFO L225 Difference]: With dead ends: 9897 [2023-04-02 23:57:26,286 INFO L226 Difference]: Without dead ends: 8029 [2023-04-02 23:57:26,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:57:26,301 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 7 mSDsluCounter, 5220 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5972 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:57:26,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5972 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:57:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8029 states. [2023-04-02 23:57:26,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8029 to 7961. [2023-04-02 23:57:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7961 states, 5038 states have (on average 1.4876935291782454) internal successors, (7495), 5411 states have internal predecessors, (7495), 2134 states have call successors, (2134), 734 states have call predecessors, (2134), 788 states have return successors, (2592), 2087 states have call predecessors, (2592), 2123 states have call successors, (2592) [2023-04-02 23:57:26,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7961 states to 7961 states and 12221 transitions. [2023-04-02 23:57:26,698 INFO L78 Accepts]: Start accepts. Automaton has 7961 states and 12221 transitions. Word has length 148 [2023-04-02 23:57:26,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:57:26,701 INFO L495 AbstractCegarLoop]: Abstraction has 7961 states and 12221 transitions. [2023-04-02 23:57:26,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-02 23:57:26,701 INFO L276 IsEmpty]: Start isEmpty. Operand 7961 states and 12221 transitions. [2023-04-02 23:57:26,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 23:57:26,716 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:26,716 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:57:26,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 23:57:26,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:26,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:26,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1573096445, now seen corresponding path program 1 times [2023-04-02 23:57:26,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:26,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393502560] [2023-04-02 23:57:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:26,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-04-02 23:57:26,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:26,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393502560] [2023-04-02 23:57:26,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393502560] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:26,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:26,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:57:26,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095678061] [2023-04-02 23:57:26,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:26,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:57:26,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:26,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:57:26,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:57:26,963 INFO L87 Difference]: Start difference. First operand 7961 states and 12221 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2023-04-02 23:57:27,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:57:27,729 INFO L93 Difference]: Finished difference Result 8158 states and 12533 transitions. [2023-04-02 23:57:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:57:27,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) Word has length 152 [2023-04-02 23:57:27,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:57:27,762 INFO L225 Difference]: With dead ends: 8158 [2023-04-02 23:57:27,762 INFO L226 Difference]: Without dead ends: 8129 [2023-04-02 23:57:27,766 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 [2023-04-02 23:57:27,767 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 803 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 23:57:27,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 2402 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 23:57:27,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8129 states. [2023-04-02 23:57:28,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8129 to 7993. [2023-04-02 23:57:28,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7993 states, 5070 states have (on average 1.4846153846153847) internal successors, (7527), 5443 states have internal predecessors, (7527), 2134 states have call successors, (2134), 734 states have call predecessors, (2134), 788 states have return successors, (2592), 2087 states have call predecessors, (2592), 2123 states have call successors, (2592) [2023-04-02 23:57:28,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7993 states to 7993 states and 12253 transitions. [2023-04-02 23:57:28,189 INFO L78 Accepts]: Start accepts. Automaton has 7993 states and 12253 transitions. Word has length 152 [2023-04-02 23:57:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:57:28,189 INFO L495 AbstractCegarLoop]: Abstraction has 7993 states and 12253 transitions. [2023-04-02 23:57:28,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2023-04-02 23:57:28,190 INFO L276 IsEmpty]: Start isEmpty. Operand 7993 states and 12253 transitions. [2023-04-02 23:57:28,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-04-02 23:57:28,208 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:28,209 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:57:28,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 23:57:28,209 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:28,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:28,209 INFO L85 PathProgramCache]: Analyzing trace with hash -2752418, now seen corresponding path program 1 times [2023-04-02 23:57:28,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:28,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769788031] [2023-04-02 23:57:28,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:28,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-04-02 23:57:28,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:28,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769788031] [2023-04-02 23:57:28,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769788031] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:28,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:28,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 23:57:28,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253857291] [2023-04-02 23:57:28,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:28,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 23:57:28,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:28,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 23:57:28,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 23:57:28,700 INFO L87 Difference]: Start difference. First operand 7993 states and 12253 transitions. Second operand has 11 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (34), 5 states have call predecessors, (34), 1 states have call successors, (34) [2023-04-02 23:57:29,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:57:29,218 INFO L93 Difference]: Finished difference Result 8030 states and 12301 transitions. [2023-04-02 23:57:29,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:57:29,218 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (34), 5 states have call predecessors, (34), 1 states have call successors, (34) Word has length 163 [2023-04-02 23:57:29,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:57:29,262 INFO L225 Difference]: With dead ends: 8030 [2023-04-02 23:57:29,262 INFO L226 Difference]: Without dead ends: 8009 [2023-04-02 23:57:29,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-04-02 23:57:29,269 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 11 mSDsluCounter, 6743 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 7494 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:57:29,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 7494 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:57:29,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8009 states. [2023-04-02 23:57:29,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8009 to 7993. [2023-04-02 23:57:29,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7993 states, 5070 states have (on average 1.4830374753451676) internal successors, (7519), 5443 states have internal predecessors, (7519), 2134 states have call successors, (2134), 734 states have call predecessors, (2134), 788 states have return successors, (2592), 2087 states have call predecessors, (2592), 2123 states have call successors, (2592) [2023-04-02 23:57:29,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7993 states to 7993 states and 12245 transitions. [2023-04-02 23:57:29,718 INFO L78 Accepts]: Start accepts. Automaton has 7993 states and 12245 transitions. Word has length 163 [2023-04-02 23:57:29,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:57:29,719 INFO L495 AbstractCegarLoop]: Abstraction has 7993 states and 12245 transitions. [2023-04-02 23:57:29,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (34), 5 states have call predecessors, (34), 1 states have call successors, (34) [2023-04-02 23:57:29,719 INFO L276 IsEmpty]: Start isEmpty. Operand 7993 states and 12245 transitions. [2023-04-02 23:57:29,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-04-02 23:57:29,744 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:29,744 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:57:29,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 23:57:29,744 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:29,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:29,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1800603020, now seen corresponding path program 1 times [2023-04-02 23:57:29,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:29,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692686450] [2023-04-02 23:57:29,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:29,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-04-02 23:57:30,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:30,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692686450] [2023-04-02 23:57:30,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692686450] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:30,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:30,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 23:57:30,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615305773] [2023-04-02 23:57:30,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:30,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 23:57:30,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:30,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 23:57:30,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:57:30,207 INFO L87 Difference]: Start difference. First operand 7993 states and 12245 transitions. Second operand has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 3 states have call successors, (40), 2 states have call predecessors, (40), 6 states have return successors, (36), 6 states have call predecessors, (36), 2 states have call successors, (36) [2023-04-02 23:57:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:57:31,298 INFO L93 Difference]: Finished difference Result 8315 states and 12685 transitions. [2023-04-02 23:57:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 23:57:31,298 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 3 states have call successors, (40), 2 states have call predecessors, (40), 6 states have return successors, (36), 6 states have call predecessors, (36), 2 states have call successors, (36) Word has length 174 [2023-04-02 23:57:31,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:57:31,336 INFO L225 Difference]: With dead ends: 8315 [2023-04-02 23:57:31,336 INFO L226 Difference]: Without dead ends: 8294 [2023-04-02 23:57:31,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2023-04-02 23:57:31,343 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 793 mSDsluCounter, 6043 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 6804 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 23:57:31,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 6804 Invalid, 1461 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 23:57:31,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8294 states. [2023-04-02 23:57:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8294 to 8205. [2023-04-02 23:57:31,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8205 states, 5206 states have (on average 1.4773338455628122) internal successors, (7691), 5579 states have internal predecessors, (7691), 2182 states have call successors, (2182), 766 states have call predecessors, (2182), 816 states have return successors, (2660), 2131 states have call predecessors, (2660), 2171 states have call successors, (2660) [2023-04-02 23:57:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8205 states to 8205 states and 12533 transitions. [2023-04-02 23:57:31,757 INFO L78 Accepts]: Start accepts. Automaton has 8205 states and 12533 transitions. Word has length 174 [2023-04-02 23:57:31,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:57:31,757 INFO L495 AbstractCegarLoop]: Abstraction has 8205 states and 12533 transitions. [2023-04-02 23:57:31,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 3 states have call successors, (40), 2 states have call predecessors, (40), 6 states have return successors, (36), 6 states have call predecessors, (36), 2 states have call successors, (36) [2023-04-02 23:57:31,757 INFO L276 IsEmpty]: Start isEmpty. Operand 8205 states and 12533 transitions. [2023-04-02 23:57:31,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-04-02 23:57:31,785 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:31,786 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:57:31,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 23:57:31,786 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:31,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:31,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1984281172, now seen corresponding path program 1 times [2023-04-02 23:57:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:31,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269619666] [2023-04-02 23:57:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:31,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-04-02 23:57:31,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:31,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269619666] [2023-04-02 23:57:31,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269619666] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:31,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:31,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 23:57:31,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576789389] [2023-04-02 23:57:31,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:31,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 23:57:31,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:31,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 23:57:31,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 23:57:31,886 INFO L87 Difference]: Start difference. First operand 8205 states and 12533 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-04-02 23:57:32,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:57:32,547 INFO L93 Difference]: Finished difference Result 23518 states and 36249 transitions. [2023-04-02 23:57:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 23:57:32,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 178 [2023-04-02 23:57:32,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:57:32,613 INFO L225 Difference]: With dead ends: 23518 [2023-04-02 23:57:32,613 INFO L226 Difference]: Without dead ends: 15513 [2023-04-02 23:57:32,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 23:57:32,646 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 736 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:57:32,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1500 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:57:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15513 states. [2023-04-02 23:57:33,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15513 to 15271. [2023-04-02 23:57:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15271 states, 9939 states have (on average 1.4910956836703895) internal successors, (14820), 10623 states have internal predecessors, (14820), 3823 states have call successors, (3823), 1391 states have call predecessors, (3823), 1508 states have return successors, (4876), 3664 states have call predecessors, (4876), 3811 states have call successors, (4876) [2023-04-02 23:57:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15271 states to 15271 states and 23519 transitions. [2023-04-02 23:57:33,460 INFO L78 Accepts]: Start accepts. Automaton has 15271 states and 23519 transitions. Word has length 178 [2023-04-02 23:57:33,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:57:33,460 INFO L495 AbstractCegarLoop]: Abstraction has 15271 states and 23519 transitions. [2023-04-02 23:57:33,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-04-02 23:57:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand 15271 states and 23519 transitions. [2023-04-02 23:57:33,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-04-02 23:57:33,485 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:33,485 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:57:33,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 23:57:33,485 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:33,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:33,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1382070764, now seen corresponding path program 1 times [2023-04-02 23:57:33,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:33,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367472979] [2023-04-02 23:57:33,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:33,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:33,596 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-04-02 23:57:33,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:33,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367472979] [2023-04-02 23:57:33,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367472979] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:33,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:33,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 23:57:33,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289809909] [2023-04-02 23:57:33,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:33,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 23:57:33,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:33,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 23:57:33,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 23:57:33,598 INFO L87 Difference]: Start difference. First operand 15271 states and 23519 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-04-02 23:57:34,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:57:34,813 INFO L93 Difference]: Finished difference Result 44670 states and 69514 transitions. [2023-04-02 23:57:34,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 23:57:34,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 179 [2023-04-02 23:57:34,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:57:34,969 INFO L225 Difference]: With dead ends: 44670 [2023-04-02 23:57:34,969 INFO L226 Difference]: Without dead ends: 29647 [2023-04-02 23:57:35,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 23:57:35,029 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 735 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:57:35,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1506 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:57:35,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29647 states. [2023-04-02 23:57:36,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29647 to 29404. [2023-04-02 23:57:36,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29404 states, 19406 states have (on average 1.4974750077295682) internal successors, (29060), 20712 states have internal predecessors, (29060), 7105 states have call successors, (7105), 2641 states have call predecessors, (7105), 2892 states have return successors, (9556), 6730 states have call predecessors, (9556), 7091 states have call successors, (9556) [2023-04-02 23:57:36,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29404 states to 29404 states and 45721 transitions. [2023-04-02 23:57:36,639 INFO L78 Accepts]: Start accepts. Automaton has 29404 states and 45721 transitions. Word has length 179 [2023-04-02 23:57:36,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:57:36,639 INFO L495 AbstractCegarLoop]: Abstraction has 29404 states and 45721 transitions. [2023-04-02 23:57:36,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-04-02 23:57:36,640 INFO L276 IsEmpty]: Start isEmpty. Operand 29404 states and 45721 transitions. [2023-04-02 23:57:36,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-04-02 23:57:36,662 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:36,662 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:57:36,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 23:57:36,662 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:36,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:36,663 INFO L85 PathProgramCache]: Analyzing trace with hash -106578794, now seen corresponding path program 1 times [2023-04-02 23:57:36,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:36,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000998066] [2023-04-02 23:57:36,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:36,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-04-02 23:57:36,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:36,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000998066] [2023-04-02 23:57:36,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000998066] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:36,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:36,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 23:57:36,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152435709] [2023-04-02 23:57:36,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:36,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 23:57:36,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:36,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 23:57:36,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 23:57:36,783 INFO L87 Difference]: Start difference. First operand 29404 states and 45721 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-04-02 23:57:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:57:39,498 INFO L93 Difference]: Finished difference Result 86975 states and 137627 transitions. [2023-04-02 23:57:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 23:57:39,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 180 [2023-04-02 23:57:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:57:39,936 INFO L225 Difference]: With dead ends: 86975 [2023-04-02 23:57:39,936 INFO L226 Difference]: Without dead ends: 57915 [2023-04-02 23:57:40,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 23:57:40,039 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 734 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:57:40,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1512 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:57:40,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57915 states. [2023-04-02 23:57:42,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57915 to 57671. [2023-04-02 23:57:42,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57671 states, 38341 states have (on average 1.4997522234683498) internal successors, (57502), 40891 states have internal predecessors, (57502), 13669 states have call successors, (13669), 5141 states have call predecessors, (13669), 5660 states have return successors, (20092), 12862 states have call predecessors, (20092), 13651 states have call successors, (20092) [2023-04-02 23:57:43,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57671 states to 57671 states and 91263 transitions. [2023-04-02 23:57:43,276 INFO L78 Accepts]: Start accepts. Automaton has 57671 states and 91263 transitions. Word has length 180 [2023-04-02 23:57:43,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:57:43,277 INFO L495 AbstractCegarLoop]: Abstraction has 57671 states and 91263 transitions. [2023-04-02 23:57:43,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-04-02 23:57:43,277 INFO L276 IsEmpty]: Start isEmpty. Operand 57671 states and 91263 transitions. [2023-04-02 23:57:43,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-04-02 23:57:43,297 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:43,297 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:57:43,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 23:57:43,298 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:43,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:43,298 INFO L85 PathProgramCache]: Analyzing trace with hash 989929070, now seen corresponding path program 1 times [2023-04-02 23:57:43,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:43,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716398724] [2023-04-02 23:57:43,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:43,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-04-02 23:57:43,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:43,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716398724] [2023-04-02 23:57:43,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716398724] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:43,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:43,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 23:57:43,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518398676] [2023-04-02 23:57:43,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:43,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 23:57:43,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:43,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 23:57:43,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 23:57:43,412 INFO L87 Difference]: Start difference. First operand 57671 states and 91263 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-04-02 23:57:48,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:57:48,746 INFO L93 Difference]: Finished difference Result 171586 states and 279856 transitions. [2023-04-02 23:57:48,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 23:57:48,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 181 [2023-04-02 23:57:48,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:57:49,493 INFO L225 Difference]: With dead ends: 171586 [2023-04-02 23:57:49,493 INFO L226 Difference]: Without dead ends: 114451 [2023-04-02 23:57:49,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 23:57:49,669 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 733 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:57:49,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 1518 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:57:49,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114451 states. [2023-04-02 23:57:55,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114451 to 114206. [2023-04-02 23:57:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114206 states, 76212 states have (on average 1.4998687870676535) internal successors, (114308), 81250 states have internal predecessors, (114308), 26797 states have call successors, (26797), 10141 states have call predecessors, (26797), 11196 states have return successors, (45652), 25126 states have call predecessors, (45652), 26771 states have call successors, (45652) [2023-04-02 23:57:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114206 states to 114206 states and 186757 transitions. [2023-04-02 23:57:56,400 INFO L78 Accepts]: Start accepts. Automaton has 114206 states and 186757 transitions. Word has length 181 [2023-04-02 23:57:56,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:57:56,400 INFO L495 AbstractCegarLoop]: Abstraction has 114206 states and 186757 transitions. [2023-04-02 23:57:56,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-04-02 23:57:56,401 INFO L276 IsEmpty]: Start isEmpty. Operand 114206 states and 186757 transitions. [2023-04-02 23:57:56,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-04-02 23:57:56,421 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:57:56,421 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:57:56,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 23:57:56,421 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:57:56,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:57:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash 621938392, now seen corresponding path program 1 times [2023-04-02 23:57:56,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:57:56,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207918634] [2023-04-02 23:57:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:57:56,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:57:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:57:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-04-02 23:57:56,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:57:56,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207918634] [2023-04-02 23:57:56,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207918634] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:57:56,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:57:56,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 23:57:56,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235660738] [2023-04-02 23:57:56,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:57:56,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 23:57:56,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:57:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 23:57:56,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 23:57:56,737 INFO L87 Difference]: Start difference. First operand 114206 states and 186757 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-04-02 23:58:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:58:01,320 INFO L93 Difference]: Finished difference Result 121519 states and 199749 transitions. [2023-04-02 23:58:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 23:58:01,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 182 [2023-04-02 23:58:01,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:58:02,106 INFO L225 Difference]: With dead ends: 121519 [2023-04-02 23:58:02,107 INFO L226 Difference]: Without dead ends: 121494 [2023-04-02 23:58:02,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 23:58:02,159 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 719 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:58:02,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1516 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:58:02,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121494 states. [2023-04-02 23:58:08,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121494 to 121222. [2023-04-02 23:58:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121222 states, 80904 states have (on average 1.4992089389894196) internal successors, (121292), 86250 states have internal predecessors, (121292), 28437 states have call successors, (28437), 10765 states have call predecessors, (28437), 11880 states have return successors, (49568), 26654 states have call predecessors, (49568), 28411 states have call successors, (49568) [2023-04-02 23:58:09,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121222 states to 121222 states and 199297 transitions. [2023-04-02 23:58:09,021 INFO L78 Accepts]: Start accepts. Automaton has 121222 states and 199297 transitions. Word has length 182 [2023-04-02 23:58:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:58:09,022 INFO L495 AbstractCegarLoop]: Abstraction has 121222 states and 199297 transitions. [2023-04-02 23:58:09,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-04-02 23:58:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand 121222 states and 199297 transitions. [2023-04-02 23:58:09,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-04-02 23:58:09,292 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:58:09,292 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:58:09,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 23:58:09,293 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:58:09,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:58:09,293 INFO L85 PathProgramCache]: Analyzing trace with hash 27462963, now seen corresponding path program 1 times [2023-04-02 23:58:09,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:58:09,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827716818] [2023-04-02 23:58:09,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:58:09,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:58:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:58:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-04-02 23:58:09,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:58:09,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827716818] [2023-04-02 23:58:09,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827716818] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:58:09,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626926168] [2023-04-02 23:58:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:58:09,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:58:09,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:58:09,857 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) [2023-04-02 23:58:09,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 23:58:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:58:10,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 4312 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 23:58:10,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:58:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-04-02 23:58:10,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:58:10,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626926168] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:58:10,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:58:10,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-02 23:58:10,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052277249] [2023-04-02 23:58:10,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:58:10,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 23:58:10,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:58:10,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 23:58:10,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:58:10,524 INFO L87 Difference]: Start difference. First operand 121222 states and 199297 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60)