/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_spec1_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:42:38,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:42:38,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:42:38,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:42:38,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:42:38,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:42:38,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:42:38,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:42:38,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:42:38,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:42:38,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:42:38,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:42:38,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:42:38,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:42:38,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:42:38,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:42:38,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:42:38,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:42:38,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:42:38,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:42:38,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:42:38,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:42:38,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:42:38,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:42:38,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:42:38,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:42:38,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:42:38,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:42:38,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:42:38,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:42:38,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:42:38,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:42:38,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:42:38,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:42:38,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:42:38,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:42:38,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:42:38,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:42:38,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:42:38,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:42:38,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:42:38,122 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 23:42:38,144 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:42:38,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:42:38,145 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:42:38,145 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:42:38,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:42:38,146 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:42:38,146 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:42:38,146 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:42:38,146 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:42:38,147 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:42:38,147 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:42:38,147 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:42:38,147 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:42:38,147 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:42:38,148 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:42:38,148 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:42:38,148 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:42:38,148 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:42:38,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:42:38,149 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:42:38,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:42:38,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:42:38,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:42:38,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:42:38,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:42:38,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:42:38,150 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:42:38,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:42:38,150 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:42:38,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:42:38,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:42:38,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:42:38,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:42:38,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:42:38,151 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:42:38,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:42:38,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:42:38,152 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:42:38,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:42:38,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:42:38,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:42:38,153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:42:38,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:42:38,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:42:38,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:42:38,354 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:42:38,355 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:42:38,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2023-04-02 23:42:39,509 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:42:39,805 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:42:39,812 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2023-04-02 23:42:39,830 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ebd72570/0c0c448a3c4b41128080a139dc6836c2/FLAG6e1ead574 [2023-04-02 23:42:39,843 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ebd72570/0c0c448a3c4b41128080a139dc6836c2 [2023-04-02 23:42:39,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:42:39,847 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:42:39,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:42:39,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:42:39,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:42:39,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:42:39" (1/1) ... [2023-04-02 23:42:39,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb8420f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:39, skipping insertion in model container [2023-04-02 23:42:39,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:42:39" (1/1) ... [2023-04-02 23:42:39,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:42:39,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:42:40,134 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_spec1_product22.cil.c[27271,27284] [2023-04-02 23:42:40,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:42:40,360 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:42:40,393 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_spec1_product22.cil.c[27271,27284] [2023-04-02 23:42:40,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:42:40,501 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:42:40,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:40 WrapperNode [2023-04-02 23:42:40,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:42:40,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:42:40,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:42:40,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:42:40,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:40" (1/1) ... [2023-04-02 23:42:40,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:40" (1/1) ... [2023-04-02 23:42:40,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:40" (1/1) ... [2023-04-02 23:42:40,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:40" (1/1) ... [2023-04-02 23:42:40,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:40" (1/1) ... [2023-04-02 23:42:40,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:40" (1/1) ... [2023-04-02 23:42:40,619 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:40" (1/1) ... [2023-04-02 23:42:40,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:40" (1/1) ... [2023-04-02 23:42:40,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:42:40,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:42:40,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:42:40,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:42:40,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:40" (1/1) ... [2023-04-02 23:42:40,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:42:40,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:42:40,676 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 23:42:40,699 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 23:42:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:42:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:42:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 23:42:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:42:40,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 23:42:40,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 23:42:40,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 23:42:40,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 23:42:40,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 23:42:40,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 23:42:40,719 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 23:42:40,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 23:42:40,719 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 23:42:40,719 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 23:42:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 23:42:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 23:42:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 23:42:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 23:42:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 23:42:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 23:42:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 23:42:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 23:42:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 23:42:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 23:42:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 23:42:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 23:42:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 23:42:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 23:42:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 23:42:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 23:42:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 23:42:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 23:42:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 23:42:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 23:42:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 23:42:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 23:42:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 23:42:40,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:42:40,722 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 23:42:40,722 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 23:42:40,722 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 23:42:40,722 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 23:42:40,722 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 23:42:40,722 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 23:42:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 23:42:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 23:42:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 23:42:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 23:42:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 23:42:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-02 23:42:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 23:42:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-02 23:42:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 23:42:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 23:42:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 23:42:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 23:42:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 23:42:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 23:42:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 23:42:40,726 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 23:42:40,726 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 23:42:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 23:42:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-04-02 23:42:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 23:42:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 23:42:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 23:42:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-04-02 23:42:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 23:42:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 23:42:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 23:42:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-04-02 23:42:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 23:42:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2023-04-02 23:42:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 23:42:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 23:42:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:42:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:42:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:42:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:42:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:42:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:42:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:42:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:42:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:42:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 23:42:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 23:42:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 23:42:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 23:42:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 23:42:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:42:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 23:42:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 23:42:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:42:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 23:42:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 23:42:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:42:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 23:42:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 23:42:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 23:42:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 23:42:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 23:42:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 23:42:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 23:42:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 23:42:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 23:42:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 23:42:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 23:42:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:42:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 23:42:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 23:42:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 23:42:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 23:42:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 23:42:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 23:42:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 23:42:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 23:42:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 23:42:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 23:42:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 23:42:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 23:42:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 23:42:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 23:42:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 23:42:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 23:42:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 23:42:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 23:42:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 23:42:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 23:42:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 23:42:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 23:42:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 23:42:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 23:42:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 23:42:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 23:42:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:42:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:42:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 23:42:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 23:42:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 23:42:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 23:42:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 23:42:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:42:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 23:42:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 23:42:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 23:42:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 23:42:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 23:42:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 23:42:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 23:42:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 23:42:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 23:42:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 23:42:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-02 23:42:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-02 23:42:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 23:42:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 23:42:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 23:42:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 23:42:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 23:42:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-04-02 23:42:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 23:42:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 23:42:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-04-02 23:42:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 23:42:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 23:42:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 23:42:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-04-02 23:42:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:42:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2023-04-02 23:42:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 23:42:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:42:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:42:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:42:41,015 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:42:41,018 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:42:42,213 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:42:43,044 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:42:43,045 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 23:42:43,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:42:43 BoogieIcfgContainer [2023-04-02 23:42:43,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:42:43,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:42:43,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:42:43,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:42:43,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:42:39" (1/3) ... [2023-04-02 23:42:43,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662c2a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:42:43, skipping insertion in model container [2023-04-02 23:42:43,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:42:40" (2/3) ... [2023-04-02 23:42:43,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662c2a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:42:43, skipping insertion in model container [2023-04-02 23:42:43,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:42:43" (3/3) ... [2023-04-02 23:42:43,059 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product22.cil.c [2023-04-02 23:42:43,079 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:42:43,079 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:42:43,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:42:43,153 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;@3b9cd48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:42:43,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:42:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 583 states, 340 states have (on average 1.4852941176470589) internal successors, (505), 369 states have internal predecessors, (505), 178 states have call successors, (178), 52 states have call predecessors, (178), 52 states have return successors, (178), 168 states have call predecessors, (178), 178 states have call successors, (178) [2023-04-02 23:42:43,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 23:42:43,186 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:42:43,188 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:42:43,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:42:43,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:42:43,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1136210293, now seen corresponding path program 1 times [2023-04-02 23:42:43,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:42:43,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060624992] [2023-04-02 23:42:43,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:42:43,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:42:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:42:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:42:44,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:42:44,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060624992] [2023-04-02 23:42:44,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060624992] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:42:44,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:42:44,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:42:44,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263004012] [2023-04-02 23:42:44,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:42:44,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:42:44,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:42:44,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:42:44,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:42:44,510 INFO L87 Difference]: Start difference. First operand has 583 states, 340 states have (on average 1.4852941176470589) internal successors, (505), 369 states have internal predecessors, (505), 178 states have call successors, (178), 52 states have call predecessors, (178), 52 states have return successors, (178), 168 states have call predecessors, (178), 178 states have call successors, (178) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-02 23:42:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:42:46,773 INFO L93 Difference]: Finished difference Result 1384 states and 2141 transitions. [2023-04-02 23:42:46,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:42:46,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 97 [2023-04-02 23:42:46,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:42:46,801 INFO L225 Difference]: With dead ends: 1384 [2023-04-02 23:42:46,802 INFO L226 Difference]: Without dead ends: 960 [2023-04-02 23:42:46,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 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 23:42:46,811 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 1737 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-02 23:42:46,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 512 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-02 23:42:46,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-04-02 23:42:46,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 871. [2023-04-02 23:42:46,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 576 states have (on average 1.5590277777777777) internal successors, (898), 606 states have internal predecessors, (898), 220 states have call successors, (220), 75 states have call predecessors, (220), 74 states have return successors, (222), 199 states have call predecessors, (222), 212 states have call successors, (222) [2023-04-02 23:42:46,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1340 transitions. [2023-04-02 23:42:46,942 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1340 transitions. Word has length 97 [2023-04-02 23:42:46,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:42:46,943 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1340 transitions. [2023-04-02 23:42:46,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-02 23:42:46,943 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1340 transitions. [2023-04-02 23:42:46,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-04-02 23:42:46,951 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:42:46,951 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:42:46,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 23:42:46,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:42:46,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:42:46,952 INFO L85 PathProgramCache]: Analyzing trace with hash -643165614, now seen corresponding path program 1 times [2023-04-02 23:42:46,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:42:46,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14556416] [2023-04-02 23:42:46,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:42:46,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:42:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:42:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:42:47,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:42:47,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14556416] [2023-04-02 23:42:47,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14556416] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:42:47,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:42:47,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 23:42:47,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051437891] [2023-04-02 23:42:47,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:42:47,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 23:42:47,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:42:47,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 23:42:47,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:42:47,852 INFO L87 Difference]: Start difference. First operand 871 states and 1340 transitions. Second operand has 12 states, 9 states have (on average 7.555555555555555) internal successors, (68), 10 states have internal predecessors, (68), 6 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (28), 8 states have call predecessors, (28), 5 states have call successors, (28) [2023-04-02 23:42:52,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:42:52,540 INFO L93 Difference]: Finished difference Result 2609 states and 4042 transitions. [2023-04-02 23:42:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 23:42:52,545 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 7.555555555555555) internal successors, (68), 10 states have internal predecessors, (68), 6 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (28), 8 states have call predecessors, (28), 5 states have call successors, (28) Word has length 139 [2023-04-02 23:42:52,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:42:52,564 INFO L225 Difference]: With dead ends: 2609 [2023-04-02 23:42:52,565 INFO L226 Difference]: Without dead ends: 1791 [2023-04-02 23:42:52,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2023-04-02 23:42:52,571 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 1226 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 9084 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 9661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 9084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:42:52,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 1322 Invalid, 9661 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [577 Valid, 9084 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-02 23:42:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2023-04-02 23:42:52,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1732. [2023-04-02 23:42:52,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1160 states have (on average 1.543103448275862) internal successors, (1790), 1207 states have internal predecessors, (1790), 420 states have call successors, (420), 139 states have call predecessors, (420), 151 states have return successors, (452), 405 states have call predecessors, (452), 412 states have call successors, (452) [2023-04-02 23:42:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2662 transitions. [2023-04-02 23:42:52,683 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2662 transitions. Word has length 139 [2023-04-02 23:42:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:42:52,684 INFO L495 AbstractCegarLoop]: Abstraction has 1732 states and 2662 transitions. [2023-04-02 23:42:52,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 7.555555555555555) internal successors, (68), 10 states have internal predecessors, (68), 6 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (28), 8 states have call predecessors, (28), 5 states have call successors, (28) [2023-04-02 23:42:52,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2662 transitions. [2023-04-02 23:42:52,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-02 23:42:52,688 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:42:52,689 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:42:52,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 23:42:52,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:42:52,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:42:52,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1188615517, now seen corresponding path program 1 times [2023-04-02 23:42:52,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:42:52,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809015674] [2023-04-02 23:42:52,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:42:52,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:42:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:42:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:42:53,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:42:53,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809015674] [2023-04-02 23:42:53,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809015674] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:42:53,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:42:53,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 23:42:53,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590361322] [2023-04-02 23:42:53,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:42:53,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 23:42:53,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:42:53,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 23:42:53,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:42:53,404 INFO L87 Difference]: Start difference. First operand 1732 states and 2662 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 6 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) [2023-04-02 23:42:56,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:42:56,649 INFO L93 Difference]: Finished difference Result 4803 states and 7463 transitions. [2023-04-02 23:42:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 23:42:56,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 6 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) Word has length 140 [2023-04-02 23:42:56,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:42:56,670 INFO L225 Difference]: With dead ends: 4803 [2023-04-02 23:42:56,670 INFO L226 Difference]: Without dead ends: 3126 [2023-04-02 23:42:56,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2023-04-02 23:42:56,685 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1812 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 5273 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 5866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 5273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-02 23:42:56,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 973 Invalid, 5866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 5273 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-02 23:42:56,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2023-04-02 23:42:56,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3041. [2023-04-02 23:42:56,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 2098 states have (on average 1.567206863679695) internal successors, (3288), 2164 states have internal predecessors, (3288), 687 states have call successors, (687), 224 states have call predecessors, (687), 255 states have return successors, (767), 682 states have call predecessors, (767), 679 states have call successors, (767) [2023-04-02 23:42:56,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4742 transitions. [2023-04-02 23:42:56,925 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4742 transitions. Word has length 140 [2023-04-02 23:42:56,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:42:56,926 INFO L495 AbstractCegarLoop]: Abstraction has 3041 states and 4742 transitions. [2023-04-02 23:42:56,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 6 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) [2023-04-02 23:42:56,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4742 transitions. [2023-04-02 23:42:56,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-02 23:42:56,931 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:42:56,931 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:42:56,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 23:42:56,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:42:56,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:42:56,932 INFO L85 PathProgramCache]: Analyzing trace with hash 363420034, now seen corresponding path program 1 times [2023-04-02 23:42:56,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:42:56,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031145711] [2023-04-02 23:42:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:42:56,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:42:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:42:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:42:57,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:42:57,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031145711] [2023-04-02 23:42:57,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031145711] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:42:57,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:42:57,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:42:57,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950285126] [2023-04-02 23:42:57,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:42:57,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:42:57,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:42:57,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:42:57,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:42:57,366 INFO L87 Difference]: Start difference. First operand 3041 states and 4742 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-02 23:42:57,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:42:57,676 INFO L93 Difference]: Finished difference Result 5348 states and 8374 transitions. [2023-04-02 23:42:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 23:42:57,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) Word has length 144 [2023-04-02 23:42:57,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:42:57,695 INFO L225 Difference]: With dead ends: 5348 [2023-04-02 23:42:57,695 INFO L226 Difference]: Without dead ends: 3153 [2023-04-02 23:42:57,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:42:57,707 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 6 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:42:57,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3794 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:42:57,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2023-04-02 23:42:57,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 3111. [2023-04-02 23:42:57,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 2148 states have (on average 1.554003724394786) internal successors, (3338), 2214 states have internal predecessors, (3338), 687 states have call successors, (687), 224 states have call predecessors, (687), 275 states have return successors, (817), 702 states have call predecessors, (817), 679 states have call successors, (817) [2023-04-02 23:42:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4842 transitions. [2023-04-02 23:42:57,883 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4842 transitions. Word has length 144 [2023-04-02 23:42:57,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:42:57,884 INFO L495 AbstractCegarLoop]: Abstraction has 3111 states and 4842 transitions. [2023-04-02 23:42:57,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-02 23:42:57,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4842 transitions. [2023-04-02 23:42:57,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-02 23:42:57,888 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:42:57,888 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:42:57,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 23:42:57,888 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:42:57,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:42:57,889 INFO L85 PathProgramCache]: Analyzing trace with hash 275455609, now seen corresponding path program 1 times [2023-04-02 23:42:57,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:42:57,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939463382] [2023-04-02 23:42:57,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:42:57,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:42:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:42:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:42:58,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:42:58,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939463382] [2023-04-02 23:42:58,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939463382] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:42:58,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:42:58,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:42:58,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211671345] [2023-04-02 23:42:58,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:42:58,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:42:58,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:42:58,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:42:58,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:42:58,344 INFO L87 Difference]: Start difference. First operand 3111 states and 4842 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-02 23:42:58,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:42:58,636 INFO L93 Difference]: Finished difference Result 5454 states and 8514 transitions. [2023-04-02 23:42:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 23:42:58,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) Word has length 145 [2023-04-02 23:42:58,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:42:58,657 INFO L225 Difference]: With dead ends: 5454 [2023-04-02 23:42:58,658 INFO L226 Difference]: Without dead ends: 3203 [2023-04-02 23:42:58,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:42:58,673 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 6 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:42:58,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3794 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:42:58,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2023-04-02 23:42:58,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3121. [2023-04-02 23:42:58,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 2158 states have (on average 1.551436515291937) internal successors, (3348), 2214 states have internal predecessors, (3348), 687 states have call successors, (687), 224 states have call predecessors, (687), 275 states have return successors, (817), 712 states have call predecessors, (817), 679 states have call successors, (817) [2023-04-02 23:42:58,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4852 transitions. [2023-04-02 23:42:58,879 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4852 transitions. Word has length 145 [2023-04-02 23:42:58,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:42:58,880 INFO L495 AbstractCegarLoop]: Abstraction has 3121 states and 4852 transitions. [2023-04-02 23:42:58,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-02 23:42:58,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4852 transitions. [2023-04-02 23:42:58,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-02 23:42:58,884 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:42:58,884 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:42:58,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 23:42:58,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:42:58,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:42:58,885 INFO L85 PathProgramCache]: Analyzing trace with hash -398505895, now seen corresponding path program 1 times [2023-04-02 23:42:58,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:42:58,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863851298] [2023-04-02 23:42:58,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:42:58,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:42:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:42:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:42:59,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:42:59,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863851298] [2023-04-02 23:42:59,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863851298] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:42:59,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:42:59,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:42:59,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862213185] [2023-04-02 23:42:59,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:42:59,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:42:59,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:42:59,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:42:59,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:42:59,257 INFO L87 Difference]: Start difference. First operand 3121 states and 4852 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-02 23:42:59,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:42:59,582 INFO L93 Difference]: Finished difference Result 5472 states and 8532 transitions. [2023-04-02 23:42:59,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 23:42:59,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) Word has length 145 [2023-04-02 23:42:59,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:42:59,602 INFO L225 Difference]: With dead ends: 5472 [2023-04-02 23:42:59,602 INFO L226 Difference]: Without dead ends: 3213 [2023-04-02 23:42:59,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:42:59,615 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 7 mSDsluCounter, 3139 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3775 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:42:59,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3775 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:42:59,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2023-04-02 23:42:59,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 3131. [2023-04-02 23:42:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 2168 states have (on average 1.5488929889298892) internal successors, (3358), 2214 states have internal predecessors, (3358), 687 states have call successors, (687), 224 states have call predecessors, (687), 275 states have return successors, (817), 722 states have call predecessors, (817), 679 states have call successors, (817) [2023-04-02 23:42:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4862 transitions. [2023-04-02 23:42:59,794 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4862 transitions. Word has length 145 [2023-04-02 23:42:59,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:42:59,795 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 4862 transitions. [2023-04-02 23:42:59,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-02 23:42:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4862 transitions. [2023-04-02 23:42:59,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-04-02 23:42:59,799 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:42:59,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:42:59,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 23:42:59,799 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:42:59,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:42:59,800 INFO L85 PathProgramCache]: Analyzing trace with hash 81885162, now seen corresponding path program 1 times [2023-04-02 23:42:59,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:42:59,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772285234] [2023-04-02 23:42:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:42:59,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:42:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:43:00,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:00,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772285234] [2023-04-02 23:43:00,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772285234] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:00,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:00,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 23:43:00,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706588020] [2023-04-02 23:43:00,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:00,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 23:43:00,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:00,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 23:43:00,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:43:00,406 INFO L87 Difference]: Start difference. First operand 3131 states and 4862 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 7 states have call successors, (33), 5 states have call predecessors, (33), 4 states have return successors, (29), 8 states have call predecessors, (29), 6 states have call successors, (29) [2023-04-02 23:43:02,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:02,974 INFO L93 Difference]: Finished difference Result 7503 states and 11725 transitions. [2023-04-02 23:43:02,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 23:43:02,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 7 states have call successors, (33), 5 states have call predecessors, (33), 4 states have return successors, (29), 8 states have call predecessors, (29), 6 states have call successors, (29) Word has length 148 [2023-04-02 23:43:02,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:03,003 INFO L225 Difference]: With dead ends: 7503 [2023-04-02 23:43:03,003 INFO L226 Difference]: Without dead ends: 4986 [2023-04-02 23:43:03,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:43:03,020 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 2679 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 2890 mSolverCounterSat, 1093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2859 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 3983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 2890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:03,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2859 Valid, 420 Invalid, 3983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1093 Valid, 2890 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 23:43:03,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4986 states. [2023-04-02 23:43:03,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4986 to 4922. [2023-04-02 23:43:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4922 states, 3339 states have (on average 1.5049415992812218) internal successors, (5025), 3430 states have internal predecessors, (5025), 1114 states have call successors, (1114), 385 states have call predecessors, (1114), 468 states have return successors, (1368), 1156 states have call predecessors, (1368), 1106 states have call successors, (1368) [2023-04-02 23:43:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4922 states to 4922 states and 7507 transitions. [2023-04-02 23:43:03,410 INFO L78 Accepts]: Start accepts. Automaton has 4922 states and 7507 transitions. Word has length 148 [2023-04-02 23:43:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:03,410 INFO L495 AbstractCegarLoop]: Abstraction has 4922 states and 7507 transitions. [2023-04-02 23:43:03,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 7 states have call successors, (33), 5 states have call predecessors, (33), 4 states have return successors, (29), 8 states have call predecessors, (29), 6 states have call successors, (29) [2023-04-02 23:43:03,411 INFO L276 IsEmpty]: Start isEmpty. Operand 4922 states and 7507 transitions. [2023-04-02 23:43:03,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 23:43:03,415 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:03,415 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:43:03,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 23:43:03,415 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:03,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:03,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1934561386, now seen corresponding path program 1 times [2023-04-02 23:43:03,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:03,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877614719] [2023-04-02 23:43:03,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:03,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:43:03,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:03,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877614719] [2023-04-02 23:43:03,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877614719] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:03,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:03,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 23:43:03,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869548529] [2023-04-02 23:43:03,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:03,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 23:43:03,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:03,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 23:43:03,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:43:03,861 INFO L87 Difference]: Start difference. First operand 4922 states and 7507 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-02 23:43:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:04,507 INFO L93 Difference]: Finished difference Result 10070 states and 15735 transitions. [2023-04-02 23:43:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 23:43:04,507 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) Word has length 151 [2023-04-02 23:43:04,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:04,543 INFO L225 Difference]: With dead ends: 10070 [2023-04-02 23:43:04,543 INFO L226 Difference]: Without dead ends: 5674 [2023-04-02 23:43:04,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 23:43:04,572 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 231 mSDsluCounter, 4406 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 5077 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:04,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 5077 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 23:43:04,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5674 states. [2023-04-02 23:43:04,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5674 to 5674. [2023-04-02 23:43:04,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5674 states, 4035 states have (on average 1.5189591078066915) internal successors, (6129), 4146 states have internal predecessors, (6129), 1132 states have call successors, (1132), 403 states have call predecessors, (1132), 506 states have return successors, (1386), 1174 states have call predecessors, (1386), 1124 states have call successors, (1386) [2023-04-02 23:43:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5674 states to 5674 states and 8647 transitions. [2023-04-02 23:43:05,024 INFO L78 Accepts]: Start accepts. Automaton has 5674 states and 8647 transitions. Word has length 151 [2023-04-02 23:43:05,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:05,024 INFO L495 AbstractCegarLoop]: Abstraction has 5674 states and 8647 transitions. [2023-04-02 23:43:05,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-02 23:43:05,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5674 states and 8647 transitions. [2023-04-02 23:43:05,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 23:43:05,028 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:05,029 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:43:05,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 23:43:05,029 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:05,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:05,029 INFO L85 PathProgramCache]: Analyzing trace with hash 782061175, now seen corresponding path program 1 times [2023-04-02 23:43:05,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:05,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202902716] [2023-04-02 23:43:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:05,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:43:05,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:05,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202902716] [2023-04-02 23:43:05,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202902716] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:05,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:05,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:43:05,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34213223] [2023-04-02 23:43:05,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:05,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:43:05,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:05,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:43:05,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:43:05,558 INFO L87 Difference]: Start difference. First operand 5674 states and 8647 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-02 23:43:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:08,826 INFO L93 Difference]: Finished difference Result 17483 states and 27419 transitions. [2023-04-02 23:43:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:43:08,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) Word has length 152 [2023-04-02 23:43:08,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:08,891 INFO L225 Difference]: With dead ends: 17483 [2023-04-02 23:43:08,892 INFO L226 Difference]: Without dead ends: 11864 [2023-04-02 23:43:08,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:43:08,922 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 2310 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 2969 mSolverCounterSat, 1069 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 4038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1069 IncrementalHoareTripleChecker+Valid, 2969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:08,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2386 Valid, 948 Invalid, 4038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1069 Valid, 2969 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-02 23:43:08,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11864 states. [2023-04-02 23:43:09,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11864 to 11336. [2023-04-02 23:43:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11336 states, 8038 states have (on average 1.5064692709629262) internal successors, (12109), 8302 states have internal predecessors, (12109), 2266 states have call successors, (2266), 819 states have call predecessors, (2266), 1031 states have return successors, (3044), 2359 states have call predecessors, (3044), 2258 states have call successors, (3044) [2023-04-02 23:43:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11336 states to 11336 states and 17419 transitions. [2023-04-02 23:43:09,794 INFO L78 Accepts]: Start accepts. Automaton has 11336 states and 17419 transitions. Word has length 152 [2023-04-02 23:43:09,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:09,794 INFO L495 AbstractCegarLoop]: Abstraction has 11336 states and 17419 transitions. [2023-04-02 23:43:09,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-02 23:43:09,795 INFO L276 IsEmpty]: Start isEmpty. Operand 11336 states and 17419 transitions. [2023-04-02 23:43:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 23:43:09,798 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:09,798 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:43:09,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 23:43:09,798 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:09,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:09,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2133001838, now seen corresponding path program 1 times [2023-04-02 23:43:09,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:09,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60903061] [2023-04-02 23:43:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:09,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:43:10,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60903061] [2023-04-02 23:43:10,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60903061] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:10,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:10,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:43:10,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786921611] [2023-04-02 23:43:10,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:10,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:43:10,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:10,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:43:10,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:43:10,364 INFO L87 Difference]: Start difference. First operand 11336 states and 17419 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2023-04-02 23:43:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:13,029 INFO L93 Difference]: Finished difference Result 21463 states and 33145 transitions. [2023-04-02 23:43:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:43:13,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 154 [2023-04-02 23:43:13,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:13,095 INFO L225 Difference]: With dead ends: 21463 [2023-04-02 23:43:13,095 INFO L226 Difference]: Without dead ends: 11741 [2023-04-02 23:43:13,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:43:13,127 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1066 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 3390 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 3820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 3390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:13,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 571 Invalid, 3820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 3390 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-02 23:43:13,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11741 states. [2023-04-02 23:43:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11741 to 11516. [2023-04-02 23:43:14,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11516 states, 8158 states have (on average 1.502451581269919) internal successors, (12257), 8450 states have internal predecessors, (12257), 2270 states have call successors, (2270), 851 states have call predecessors, (2270), 1087 states have return successors, (3120), 2359 states have call predecessors, (3120), 2262 states have call successors, (3120) [2023-04-02 23:43:14,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11516 states to 11516 states and 17647 transitions. [2023-04-02 23:43:14,164 INFO L78 Accepts]: Start accepts. Automaton has 11516 states and 17647 transitions. Word has length 154 [2023-04-02 23:43:14,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:14,168 INFO L495 AbstractCegarLoop]: Abstraction has 11516 states and 17647 transitions. [2023-04-02 23:43:14,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2023-04-02 23:43:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand 11516 states and 17647 transitions. [2023-04-02 23:43:14,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-04-02 23:43:14,177 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:14,178 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:43:14,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 23:43:14,178 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:14,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:14,179 INFO L85 PathProgramCache]: Analyzing trace with hash 809382225, now seen corresponding path program 1 times [2023-04-02 23:43:14,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:14,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219384075] [2023-04-02 23:43:14,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:14,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 23:43:14,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:14,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219384075] [2023-04-02 23:43:14,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219384075] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:14,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:14,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:43:14,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570168414] [2023-04-02 23:43:14,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:14,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:43:14,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:14,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:43:14,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:43:14,470 INFO L87 Difference]: Start difference. First operand 11516 states and 17647 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (31), 4 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-02 23:43:15,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:15,726 INFO L93 Difference]: Finished difference Result 11586 states and 17766 transitions. [2023-04-02 23:43:15,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:43:15,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (31), 4 states have call predecessors, (31), 2 states have call successors, (31) Word has length 157 [2023-04-02 23:43:15,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:15,782 INFO L225 Difference]: With dead ends: 11586 [2023-04-02 23:43:15,783 INFO L226 Difference]: Without dead ends: 11569 [2023-04-02 23:43:15,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:43:15,794 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 688 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:15,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 2050 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 23:43:15,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11569 states. [2023-04-02 23:43:16,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11569 to 11524. [2023-04-02 23:43:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11524 states, 8166 states have (on average 1.5019593436198873) internal successors, (12265), 8458 states have internal predecessors, (12265), 2270 states have call successors, (2270), 851 states have call predecessors, (2270), 1087 states have return successors, (3120), 2359 states have call predecessors, (3120), 2262 states have call successors, (3120) [2023-04-02 23:43:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11524 states to 11524 states and 17655 transitions. [2023-04-02 23:43:16,467 INFO L78 Accepts]: Start accepts. Automaton has 11524 states and 17655 transitions. Word has length 157 [2023-04-02 23:43:16,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:16,467 INFO L495 AbstractCegarLoop]: Abstraction has 11524 states and 17655 transitions. [2023-04-02 23:43:16,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (31), 4 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-02 23:43:16,468 INFO L276 IsEmpty]: Start isEmpty. Operand 11524 states and 17655 transitions. [2023-04-02 23:43:16,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-04-02 23:43:16,471 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:16,472 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:43:16,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 23:43:16,472 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:16,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:16,472 INFO L85 PathProgramCache]: Analyzing trace with hash -456246347, now seen corresponding path program 1 times [2023-04-02 23:43:16,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:16,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540435832] [2023-04-02 23:43:16,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:16,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 23:43:16,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:16,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540435832] [2023-04-02 23:43:16,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540435832] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:16,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:16,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 23:43:16,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431377726] [2023-04-02 23:43:16,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:16,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 23:43:16,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:16,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 23:43:16,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:43:16,866 INFO L87 Difference]: Start difference. First operand 11524 states and 17655 transitions. Second operand has 9 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (32), 5 states have call predecessors, (32), 2 states have call successors, (32) [2023-04-02 23:43:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:18,044 INFO L93 Difference]: Finished difference Result 12025 states and 18356 transitions. [2023-04-02 23:43:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:43:18,045 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (32), 5 states have call predecessors, (32), 2 states have call successors, (32) Word has length 163 [2023-04-02 23:43:18,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:18,104 INFO L225 Difference]: With dead ends: 12025 [2023-04-02 23:43:18,105 INFO L226 Difference]: Without dead ends: 12008 [2023-04-02 23:43:18,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-04-02 23:43:18,117 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 671 mSDsluCounter, 3667 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 4298 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:18,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 4298 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 23:43:18,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12008 states. [2023-04-02 23:43:19,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12008 to 11794. [2023-04-02 23:43:19,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11794 states, 8334 states have (on average 1.49592032637389) internal successors, (12467), 8629 states have internal predecessors, (12467), 2321 states have call successors, (2321), 896 states have call predecessors, (2321), 1138 states have return successors, (3228), 2413 states have call predecessors, (3228), 2313 states have call successors, (3228) [2023-04-02 23:43:19,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11794 states to 11794 states and 18016 transitions. [2023-04-02 23:43:19,113 INFO L78 Accepts]: Start accepts. Automaton has 11794 states and 18016 transitions. Word has length 163 [2023-04-02 23:43:19,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:19,114 INFO L495 AbstractCegarLoop]: Abstraction has 11794 states and 18016 transitions. [2023-04-02 23:43:19,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (32), 5 states have call predecessors, (32), 2 states have call successors, (32) [2023-04-02 23:43:19,114 INFO L276 IsEmpty]: Start isEmpty. Operand 11794 states and 18016 transitions. [2023-04-02 23:43:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-04-02 23:43:19,118 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:19,118 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:43:19,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 23:43:19,119 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:19,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:19,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1652581165, now seen corresponding path program 1 times [2023-04-02 23:43:19,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:19,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944549487] [2023-04-02 23:43:19,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:19,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 23:43:20,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:20,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944549487] [2023-04-02 23:43:20,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944549487] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:20,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:20,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 23:43:20,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52626954] [2023-04-02 23:43:20,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:20,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 23:43:20,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:20,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 23:43:20,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 23:43:20,011 INFO L87 Difference]: Start difference. First operand 11794 states and 18016 transitions. Second operand has 10 states, 9 states have (on average 10.0) internal successors, (90), 10 states have internal predecessors, (90), 9 states have call successors, (39), 5 states have call predecessors, (39), 4 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) [2023-04-02 23:43:24,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:24,024 INFO L93 Difference]: Finished difference Result 32701 states and 50733 transitions. [2023-04-02 23:43:24,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 23:43:24,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 10 states have internal predecessors, (90), 9 states have call successors, (39), 5 states have call predecessors, (39), 4 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) Word has length 177 [2023-04-02 23:43:24,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:24,138 INFO L225 Difference]: With dead ends: 32701 [2023-04-02 23:43:24,138 INFO L226 Difference]: Without dead ends: 20960 [2023-04-02 23:43:24,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-04-02 23:43:24,188 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 2694 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4585 mSolverCounterSat, 1101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2812 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 5686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1101 IncrementalHoareTripleChecker+Valid, 4585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:24,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2812 Valid, 1573 Invalid, 5686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1101 Valid, 4585 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-02 23:43:24,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20960 states. [2023-04-02 23:43:25,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20960 to 20329. [2023-04-02 23:43:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20329 states, 14193 states have (on average 1.499753399563165) internal successors, (21286), 14869 states have internal predecessors, (21286), 4229 states have call successors, (4229), 1467 states have call predecessors, (4229), 1906 states have return successors, (6076), 4272 states have call predecessors, (6076), 4221 states have call successors, (6076) [2023-04-02 23:43:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20329 states to 20329 states and 31591 transitions. [2023-04-02 23:43:25,728 INFO L78 Accepts]: Start accepts. Automaton has 20329 states and 31591 transitions. Word has length 177 [2023-04-02 23:43:25,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:25,729 INFO L495 AbstractCegarLoop]: Abstraction has 20329 states and 31591 transitions. [2023-04-02 23:43:25,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 10 states have internal predecessors, (90), 9 states have call successors, (39), 5 states have call predecessors, (39), 4 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) [2023-04-02 23:43:25,729 INFO L276 IsEmpty]: Start isEmpty. Operand 20329 states and 31591 transitions. [2023-04-02 23:43:25,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-04-02 23:43:25,733 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:25,733 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:43:25,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 23:43:25,734 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:25,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1731395486, now seen corresponding path program 1 times [2023-04-02 23:43:25,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:25,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266621684] [2023-04-02 23:43:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:25,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:26,325 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 23:43:26,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:26,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266621684] [2023-04-02 23:43:26,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266621684] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:26,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:26,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 23:43:26,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832360169] [2023-04-02 23:43:26,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:26,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 23:43:26,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:26,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 23:43:26,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 23:43:26,327 INFO L87 Difference]: Start difference. First operand 20329 states and 31591 transitions. Second operand has 10 states, 9 states have (on average 10.333333333333334) internal successors, (93), 7 states have internal predecessors, (93), 2 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (35), 5 states have call predecessors, (35), 2 states have call successors, (35) [2023-04-02 23:43:27,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:27,745 INFO L93 Difference]: Finished difference Result 41463 states and 65296 transitions. [2023-04-02 23:43:27,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 23:43:27,746 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.333333333333334) internal successors, (93), 7 states have internal predecessors, (93), 2 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (35), 5 states have call predecessors, (35), 2 states have call successors, (35) Word has length 180 [2023-04-02 23:43:27,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:27,851 INFO L225 Difference]: With dead ends: 41463 [2023-04-02 23:43:27,852 INFO L226 Difference]: Without dead ends: 23241 [2023-04-02 23:43:27,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 23:43:27,925 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 33 mSDsluCounter, 5154 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 5801 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:27,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 5801 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:43:27,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23241 states. [2023-04-02 23:43:29,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23241 to 21995. [2023-04-02 23:43:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21995 states, 15173 states have (on average 1.4979239438476242) internal successors, (22728), 16101 states have internal predecessors, (22728), 4775 states have call successors, (4775), 1467 states have call predecessors, (4775), 2046 states have return successors, (6804), 4811 states have call predecessors, (6804), 4767 states have call successors, (6804) [2023-04-02 23:43:29,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21995 states to 21995 states and 34307 transitions. [2023-04-02 23:43:29,652 INFO L78 Accepts]: Start accepts. Automaton has 21995 states and 34307 transitions. Word has length 180 [2023-04-02 23:43:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:29,652 INFO L495 AbstractCegarLoop]: Abstraction has 21995 states and 34307 transitions. [2023-04-02 23:43:29,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.333333333333334) internal successors, (93), 7 states have internal predecessors, (93), 2 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (35), 5 states have call predecessors, (35), 2 states have call successors, (35) [2023-04-02 23:43:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 21995 states and 34307 transitions. [2023-04-02 23:43:29,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-04-02 23:43:29,657 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:29,657 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:29,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 23:43:29,657 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:29,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:29,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1483788865, now seen corresponding path program 1 times [2023-04-02 23:43:29,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:29,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854237132] [2023-04-02 23:43:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:29,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 23:43:30,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:30,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854237132] [2023-04-02 23:43:30,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854237132] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:43:30,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522681622] [2023-04-02 23:43:30,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:30,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:43:30,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:43:30,793 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 23:43:30,835 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 23:43:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:31,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 3266 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-02 23:43:31,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:43:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:43:33,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:43:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 23:43:38,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522681622] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:43:38,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [902952299] [2023-04-02 23:43:38,817 INFO L159 IcfgInterpreter]: Started Sifa with 166 locations of interest [2023-04-02 23:43:38,818 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:43:38,821 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:43:38,825 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:43:38,826 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:43:40,976 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2023-04-02 23:43:41,483 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 243 for LOIs [2023-04-02 23:43:44,103 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 243 for LOIs [2023-04-02 23:43:48,169 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 123071 conjuctions. This might take some time...