./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:35:13,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:35:13,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:35:13,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:35:13,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:35:13,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:35:13,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:35:13,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:35:13,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:35:13,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:35:13,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:35:13,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:35:13,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:35:13,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:35:13,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:35:13,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:35:13,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:35:13,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:35:13,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:35:13,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:35:13,762 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:35:13,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:35:13,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:35:13,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:35:13,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:35:13,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:35:13,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:35:13,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:35:13,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:35:13,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:35:13,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:35:13,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:35:13,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:35:13,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:35:13,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:35:13,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:35:13,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:35:13,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:35:13,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:35:13,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:35:13,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:35:13,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:35:13,786 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:35:13,811 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:35:13,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:35:13,812 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:35:13,812 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:35:13,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:35:13,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:35:13,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:35:13,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:35:13,813 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:35:13,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:35:13,814 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:35:13,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:35:13,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:35:13,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:35:13,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:35:13,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:35:13,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:35:13,815 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:35:13,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:35:13,816 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:35:13,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:35:13,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:35:13,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:35:13,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:35:13,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:35:13,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:35:13,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:35:13,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:35:13,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:35:13,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:35:13,817 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:35:13,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:35:13,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:35:13,818 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 [2022-07-21 04:35:14,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:35:14,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:35:14,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:35:14,101 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:35:14,102 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:35:14,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2022-07-21 04:35:14,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76981fb1f/e40147a7ad11496f9f3d1d9abc3fb051/FLAG742e73570 [2022-07-21 04:35:14,623 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:35:14,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2022-07-21 04:35:14,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76981fb1f/e40147a7ad11496f9f3d1d9abc3fb051/FLAG742e73570 [2022-07-21 04:35:14,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76981fb1f/e40147a7ad11496f9f3d1d9abc3fb051 [2022-07-21 04:35:14,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:35:14,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:35:14,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:35:14,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:35:14,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:35:14,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:35:14" (1/1) ... [2022-07-21 04:35:14,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4bc5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:14, skipping insertion in model container [2022-07-21 04:35:14,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:35:14" (1/1) ... [2022-07-21 04:35:14,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:35:14,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:35:15,160 WARN L230 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_spec3_product24.cil.c[75121,75134] [2022-07-21 04:35:15,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:35:15,170 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:35:15,285 WARN L230 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_spec3_product24.cil.c[75121,75134] [2022-07-21 04:35:15,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:35:15,308 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:35:15,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:15 WrapperNode [2022-07-21 04:35:15,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:35:15,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:35:15,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:35:15,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:35:15,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:15" (1/1) ... [2022-07-21 04:35:15,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:15" (1/1) ... [2022-07-21 04:35:15,373 INFO L137 Inliner]: procedures = 96, calls = 359, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 966 [2022-07-21 04:35:15,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:35:15,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:35:15,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:35:15,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:35:15,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:15" (1/1) ... [2022-07-21 04:35:15,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:15" (1/1) ... [2022-07-21 04:35:15,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:15" (1/1) ... [2022-07-21 04:35:15,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:15" (1/1) ... [2022-07-21 04:35:15,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:15" (1/1) ... [2022-07-21 04:35:15,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:15" (1/1) ... [2022-07-21 04:35:15,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:15" (1/1) ... [2022-07-21 04:35:15,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:35:15,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:35:15,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:35:15,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:35:15,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:15" (1/1) ... [2022-07-21 04:35:15,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:35:15,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:35:15,479 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) [2022-07-21 04:35:15,485 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 [2022-07-21 04:35:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:35:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-21 04:35:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-21 04:35:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-21 04:35:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-21 04:35:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-21 04:35:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-21 04:35:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-21 04:35:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-21 04:35:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-21 04:35:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-21 04:35:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-21 04:35:15,507 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-21 04:35:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-21 04:35:15,507 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-21 04:35:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-21 04:35:15,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-21 04:35:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-21 04:35:15,508 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-21 04:35:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-21 04:35:15,509 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-21 04:35:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-21 04:35:15,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-21 04:35:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-21 04:35:15,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-21 04:35:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-21 04:35:15,509 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-21 04:35:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-21 04:35:15,510 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-21 04:35:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-21 04:35:15,510 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-21 04:35:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-07-21 04:35:15,510 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-07-21 04:35:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-21 04:35:15,511 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-21 04:35:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-07-21 04:35:15,511 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-07-21 04:35:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-21 04:35:15,511 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-21 04:35:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-21 04:35:15,511 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-21 04:35:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-21 04:35:15,512 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-21 04:35:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-21 04:35:15,512 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-21 04:35:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:35:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-21 04:35:15,512 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-21 04:35:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-21 04:35:15,513 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-21 04:35:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-21 04:35:15,513 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-21 04:35:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-21 04:35:15,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-21 04:35:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-07-21 04:35:15,515 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-07-21 04:35:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:35:15,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:35:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-21 04:35:15,516 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-21 04:35:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-07-21 04:35:15,516 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-07-21 04:35:15,666 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:35:15,667 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:35:16,394 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:35:16,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:35:16,406 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 04:35:16,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:35:16 BoogieIcfgContainer [2022-07-21 04:35:16,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:35:16,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:35:16,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:35:16,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:35:16,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:35:14" (1/3) ... [2022-07-21 04:35:16,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e3843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:35:16, skipping insertion in model container [2022-07-21 04:35:16,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:35:15" (2/3) ... [2022-07-21 04:35:16,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e3843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:35:16, skipping insertion in model container [2022-07-21 04:35:16,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:35:16" (3/3) ... [2022-07-21 04:35:16,415 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2022-07-21 04:35:16,425 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:35:16,425 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:35:16,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:35:16,490 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=PETRI_NET, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@54653763, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@372a09c0 [2022-07-21 04:35:16,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:35:16,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 620 states, 474 states have (on average 1.6582278481012658) internal successors, (786), 494 states have internal predecessors, (786), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2022-07-21 04:35:16,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 04:35:16,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:16,509 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:35:16,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:16,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:16,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1970042656, now seen corresponding path program 1 times [2022-07-21 04:35:16,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:16,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384588868] [2022-07-21 04:35:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:16,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:16,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:17,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:17,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:17,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:17,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:35:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:17,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:35:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:17,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:35:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:17,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:17,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384588868] [2022-07-21 04:35:17,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384588868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:17,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:17,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:17,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279981510] [2022-07-21 04:35:17,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:17,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:17,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:17,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:17,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:17,238 INFO L87 Difference]: Start difference. First operand has 620 states, 474 states have (on average 1.6582278481012658) internal successors, (786), 494 states have internal predecessors, (786), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:22,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:22,910 INFO L93 Difference]: Finished difference Result 1512 states and 2577 transitions. [2022-07-21 04:35:22,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:35:22,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-07-21 04:35:22,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:22,942 INFO L225 Difference]: With dead ends: 1512 [2022-07-21 04:35:22,943 INFO L226 Difference]: Without dead ends: 896 [2022-07-21 04:35:22,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:35:22,958 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 936 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 5219 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 5455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 5219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:22,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 2977 Invalid, 5455 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [236 Valid, 5219 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-21 04:35:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2022-07-21 04:35:23,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 623. [2022-07-21 04:35:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 477 states have (on average 1.649895178197065) internal successors, (787), 497 states have internal predecessors, (787), 116 states have call successors, (116), 29 states have call predecessors, (116), 29 states have return successors, (115), 110 states have call predecessors, (115), 113 states have call successors, (115) [2022-07-21 04:35:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1018 transitions. [2022-07-21 04:35:23,137 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1018 transitions. Word has length 67 [2022-07-21 04:35:23,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:23,137 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 1018 transitions. [2022-07-21 04:35:23,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1018 transitions. [2022-07-21 04:35:23,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 04:35:23,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:23,147 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:35:23,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 04:35:23,147 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:23,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:23,148 INFO L85 PathProgramCache]: Analyzing trace with hash -935502562, now seen corresponding path program 1 times [2022-07-21 04:35:23,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:23,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605179183] [2022-07-21 04:35:23,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:23,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:23,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:23,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:23,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:35:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 04:35:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:35:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:23,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:35:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:23,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:23,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605179183] [2022-07-21 04:35:23,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605179183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:23,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:23,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:35:23,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172168264] [2022-07-21 04:35:23,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:23,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:35:23,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:23,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:35:23,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:35:23,426 INFO L87 Difference]: Start difference. First operand 623 states and 1018 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:35:27,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:27,267 INFO L93 Difference]: Finished difference Result 1497 states and 2524 transitions. [2022-07-21 04:35:27,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:35:27,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-07-21 04:35:27,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:27,273 INFO L225 Difference]: With dead ends: 1497 [2022-07-21 04:35:27,273 INFO L226 Difference]: Without dead ends: 859 [2022-07-21 04:35:27,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:35:27,276 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 1477 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:27,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 1782 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 04:35:27,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-07-21 04:35:27,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 599. [2022-07-21 04:35:27,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 456 states have (on average 1.6403508771929824) internal successors, (748), 474 states have internal predecessors, (748), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-21 04:35:27,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 975 transitions. [2022-07-21 04:35:27,342 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 975 transitions. Word has length 68 [2022-07-21 04:35:27,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:27,343 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 975 transitions. [2022-07-21 04:35:27,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 04:35:27,343 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 975 transitions. [2022-07-21 04:35:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 04:35:27,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:27,344 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:35:27,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 04:35:27,345 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:27,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:27,345 INFO L85 PathProgramCache]: Analyzing trace with hash 262212232, now seen corresponding path program 1 times [2022-07-21 04:35:27,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:27,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729272008] [2022-07-21 04:35:27,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:27,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:27,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:27,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:27,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:27,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:27,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:27,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 04:35:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:27,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:35:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 04:35:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:27,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:27,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729272008] [2022-07-21 04:35:27,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729272008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:27,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:27,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:27,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121576446] [2022-07-21 04:35:27,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:27,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:27,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:27,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:27,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:27,625 INFO L87 Difference]: Start difference. First operand 599 states and 975 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:32,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:32,123 INFO L93 Difference]: Finished difference Result 1442 states and 2430 transitions. [2022-07-21 04:35:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:35:32,123 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2022-07-21 04:35:32,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:32,147 INFO L225 Difference]: With dead ends: 1442 [2022-07-21 04:35:32,147 INFO L226 Difference]: Without dead ends: 859 [2022-07-21 04:35:32,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:35:32,155 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 1489 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 4891 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 5364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 4891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:32,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 2794 Invalid, 5364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 4891 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-21 04:35:32,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-07-21 04:35:32,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 599. [2022-07-21 04:35:32,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 456 states have (on average 1.638157894736842) internal successors, (747), 474 states have internal predecessors, (747), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-21 04:35:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 974 transitions. [2022-07-21 04:35:32,202 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 974 transitions. Word has length 68 [2022-07-21 04:35:32,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:32,203 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 974 transitions. [2022-07-21 04:35:32,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 974 transitions. [2022-07-21 04:35:32,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 04:35:32,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:32,205 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:35:32,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 04:35:32,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:32,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:32,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1028271764, now seen corresponding path program 1 times [2022-07-21 04:35:32,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:32,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063766359] [2022-07-21 04:35:32,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:32,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:32,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:32,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:32,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:32,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:35:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:32,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 04:35:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:32,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:35:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:32,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:32,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063766359] [2022-07-21 04:35:32,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063766359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:32,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:32,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:32,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756111408] [2022-07-21 04:35:32,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:32,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:32,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:32,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:32,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:32,498 INFO L87 Difference]: Start difference. First operand 599 states and 974 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:36,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:36,997 INFO L93 Difference]: Finished difference Result 1460 states and 2452 transitions. [2022-07-21 04:35:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:35:36,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2022-07-21 04:35:36,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:37,002 INFO L225 Difference]: With dead ends: 1460 [2022-07-21 04:35:37,002 INFO L226 Difference]: Without dead ends: 853 [2022-07-21 04:35:37,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:35:37,011 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 1511 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 4899 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 5374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 4899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:37,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 2843 Invalid, 5374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 4899 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-21 04:35:37,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-07-21 04:35:37,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 593. [2022-07-21 04:35:37,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 450 states have (on average 1.6311111111111112) internal successors, (734), 468 states have internal predecessors, (734), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-21 04:35:37,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 961 transitions. [2022-07-21 04:35:37,046 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 961 transitions. Word has length 69 [2022-07-21 04:35:37,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:37,047 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 961 transitions. [2022-07-21 04:35:37,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:37,047 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 961 transitions. [2022-07-21 04:35:37,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-21 04:35:37,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:37,048 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:35:37,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 04:35:37,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:37,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:37,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1404132560, now seen corresponding path program 1 times [2022-07-21 04:35:37,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:37,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961036887] [2022-07-21 04:35:37,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:37,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:37,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:37,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:37,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:37,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:37,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:37,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 04:35:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:37,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:35:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:37,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:35:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:37,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:37,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961036887] [2022-07-21 04:35:37,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961036887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:37,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:37,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:37,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188990114] [2022-07-21 04:35:37,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:37,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:37,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:37,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:37,318 INFO L87 Difference]: Start difference. First operand 593 states and 961 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:41,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:41,843 INFO L93 Difference]: Finished difference Result 1430 states and 2401 transitions. [2022-07-21 04:35:41,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:35:41,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2022-07-21 04:35:41,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:41,848 INFO L225 Difference]: With dead ends: 1430 [2022-07-21 04:35:41,848 INFO L226 Difference]: Without dead ends: 853 [2022-07-21 04:35:41,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:35:41,851 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 844 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 5000 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 5231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 5000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:41,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 2810 Invalid, 5231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 5000 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-21 04:35:41,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-07-21 04:35:41,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 593. [2022-07-21 04:35:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 450 states have (on average 1.6288888888888888) internal successors, (733), 468 states have internal predecessors, (733), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-21 04:35:41,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 960 transitions. [2022-07-21 04:35:41,885 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 960 transitions. Word has length 70 [2022-07-21 04:35:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:41,885 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 960 transitions. [2022-07-21 04:35:41,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:41,886 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 960 transitions. [2022-07-21 04:35:41,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 04:35:41,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:41,887 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:35:41,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 04:35:41,887 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:41,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:41,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1463803383, now seen corresponding path program 1 times [2022-07-21 04:35:41,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:41,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562479823] [2022-07-21 04:35:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:41,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:41,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:42,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:42,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:42,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:42,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:42,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 04:35:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:42,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 04:35:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:42,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:35:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:42,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:42,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:42,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562479823] [2022-07-21 04:35:42,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562479823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:42,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:42,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:42,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79569563] [2022-07-21 04:35:42,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:42,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:42,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:42,132 INFO L87 Difference]: Start difference. First operand 593 states and 960 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:46,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:46,599 INFO L93 Difference]: Finished difference Result 1448 states and 2421 transitions. [2022-07-21 04:35:46,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:35:46,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-07-21 04:35:46,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:46,603 INFO L225 Difference]: With dead ends: 1448 [2022-07-21 04:35:46,603 INFO L226 Difference]: Without dead ends: 847 [2022-07-21 04:35:46,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:35:46,605 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 1485 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 4830 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 5311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 4830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:46,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 2776 Invalid, 5311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 4830 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-21 04:35:46,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-07-21 04:35:46,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 587. [2022-07-21 04:35:46,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 444 states have (on average 1.6216216216216217) internal successors, (720), 462 states have internal predecessors, (720), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-21 04:35:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 947 transitions. [2022-07-21 04:35:46,640 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 947 transitions. Word has length 71 [2022-07-21 04:35:46,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:46,640 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 947 transitions. [2022-07-21 04:35:46,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 947 transitions. [2022-07-21 04:35:46,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 04:35:46,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:46,641 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:35:46,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 04:35:46,642 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:46,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:46,642 INFO L85 PathProgramCache]: Analyzing trace with hash -861985295, now seen corresponding path program 1 times [2022-07-21 04:35:46,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:46,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927047550] [2022-07-21 04:35:46,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:46,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:46,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:46,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:46,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:46,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:46,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:46,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:35:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:46,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:35:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:46,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:35:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:46,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:46,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927047550] [2022-07-21 04:35:46,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927047550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:46,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:46,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:46,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048093750] [2022-07-21 04:35:46,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:46,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:46,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:46,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:46,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:46,887 INFO L87 Difference]: Start difference. First operand 587 states and 947 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:51,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:51,451 INFO L93 Difference]: Finished difference Result 1418 states and 2372 transitions. [2022-07-21 04:35:51,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:35:51,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2022-07-21 04:35:51,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:51,455 INFO L225 Difference]: With dead ends: 1418 [2022-07-21 04:35:51,455 INFO L226 Difference]: Without dead ends: 847 [2022-07-21 04:35:51,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:35:51,457 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 820 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 4906 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 5138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 4906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:51,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 2780 Invalid, 5138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 4906 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-21 04:35:51,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-07-21 04:35:51,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 587. [2022-07-21 04:35:51,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 444 states have (on average 1.6193693693693694) internal successors, (719), 462 states have internal predecessors, (719), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-21 04:35:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 946 transitions. [2022-07-21 04:35:51,495 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 946 transitions. Word has length 72 [2022-07-21 04:35:51,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:51,496 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 946 transitions. [2022-07-21 04:35:51,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:51,496 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 946 transitions. [2022-07-21 04:35:51,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 04:35:51,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:51,498 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:35:51,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 04:35:51,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:51,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:51,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2139409325, now seen corresponding path program 1 times [2022-07-21 04:35:51,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:51,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117567801] [2022-07-21 04:35:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:51,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:51,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:51,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:51,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:51,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:35:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:51,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 04:35:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:51,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:35:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:51,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:51,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:51,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117567801] [2022-07-21 04:35:51,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117567801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:51,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:51,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:51,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963281771] [2022-07-21 04:35:51,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:51,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:51,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:51,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:51,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:51,738 INFO L87 Difference]: Start difference. First operand 587 states and 946 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:56,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:35:56,241 INFO L93 Difference]: Finished difference Result 1436 states and 2390 transitions. [2022-07-21 04:35:56,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:35:56,241 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2022-07-21 04:35:56,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:35:56,245 INFO L225 Difference]: With dead ends: 1436 [2022-07-21 04:35:56,245 INFO L226 Difference]: Without dead ends: 841 [2022-07-21 04:35:56,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:35:56,248 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 1455 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 4760 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 5239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 4760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:35:56,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1570 Valid, 2798 Invalid, 5239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 4760 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-21 04:35:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-07-21 04:35:56,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 581. [2022-07-21 04:35:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6118721461187215) internal successors, (706), 456 states have internal predecessors, (706), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-21 04:35:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 933 transitions. [2022-07-21 04:35:56,288 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 933 transitions. Word has length 73 [2022-07-21 04:35:56,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:56,288 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 933 transitions. [2022-07-21 04:35:56,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:35:56,289 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 933 transitions. [2022-07-21 04:35:56,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 04:35:56,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:56,289 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:35:56,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 04:35:56,290 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:56,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:56,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1355740980, now seen corresponding path program 1 times [2022-07-21 04:35:56,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:56,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056274203] [2022-07-21 04:35:56,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:56,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:56,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:56,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:35:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:56,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:56,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:56,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:35:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:56,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 04:35:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:56,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:35:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:35:56,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:56,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056274203] [2022-07-21 04:35:56,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056274203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:56,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:35:56,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:35:56,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227115860] [2022-07-21 04:35:56,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:56,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:35:56,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:35:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:35:56,582 INFO L87 Difference]: Start difference. First operand 581 states and 933 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:01,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:01,163 INFO L93 Difference]: Finished difference Result 1406 states and 2343 transitions. [2022-07-21 04:36:01,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:36:01,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2022-07-21 04:36:01,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:01,167 INFO L225 Difference]: With dead ends: 1406 [2022-07-21 04:36:01,168 INFO L226 Difference]: Without dead ends: 841 [2022-07-21 04:36:01,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:36:01,170 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 805 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 4813 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 5046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 4813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:01,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 2794 Invalid, 5046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 4813 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-21 04:36:01,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-07-21 04:36:01,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 581. [2022-07-21 04:36:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6095890410958904) internal successors, (705), 456 states have internal predecessors, (705), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-21 04:36:01,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 932 transitions. [2022-07-21 04:36:01,208 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 932 transitions. Word has length 73 [2022-07-21 04:36:01,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:01,209 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 932 transitions. [2022-07-21 04:36:01,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:01,209 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 932 transitions. [2022-07-21 04:36:01,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 04:36:01,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:01,210 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:36:01,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 04:36:01,210 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:01,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:01,211 INFO L85 PathProgramCache]: Analyzing trace with hash -600565641, now seen corresponding path program 1 times [2022-07-21 04:36:01,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:01,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657430285] [2022-07-21 04:36:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:01,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 04:36:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 04:36:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:36:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:01,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:36:01,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:01,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657430285] [2022-07-21 04:36:01,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657430285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:01,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:01,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:36:01,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625025216] [2022-07-21 04:36:01,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:01,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:36:01,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:01,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:36:01,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:01,481 INFO L87 Difference]: Start difference. First operand 581 states and 932 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:06,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:06,074 INFO L93 Difference]: Finished difference Result 1418 states and 2353 transitions. [2022-07-21 04:36:06,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:36:06,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-07-21 04:36:06,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:06,080 INFO L225 Difference]: With dead ends: 1418 [2022-07-21 04:36:06,080 INFO L226 Difference]: Without dead ends: 853 [2022-07-21 04:36:06,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:36:06,082 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 792 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 4822 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 5057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 4822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:06,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 2813 Invalid, 5057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 4822 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-21 04:36:06,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-07-21 04:36:06,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 587. [2022-07-21 04:36:06,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 444 states have (on average 1.6013513513513513) internal successors, (711), 462 states have internal predecessors, (711), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-21 04:36:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 938 transitions. [2022-07-21 04:36:06,123 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 938 transitions. Word has length 74 [2022-07-21 04:36:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:06,123 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 938 transitions. [2022-07-21 04:36:06,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 938 transitions. [2022-07-21 04:36:06,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 04:36:06,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:06,125 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:36:06,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 04:36:06,126 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:06,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:06,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1849034489, now seen corresponding path program 1 times [2022-07-21 04:36:06,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:06,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770894437] [2022-07-21 04:36:06,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:06,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 04:36:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 04:36:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:36:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:36:06,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:06,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770894437] [2022-07-21 04:36:06,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770894437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:06,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:06,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:36:06,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788746361] [2022-07-21 04:36:06,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:06,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:36:06,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:06,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:36:06,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:06,384 INFO L87 Difference]: Start difference. First operand 587 states and 938 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:10,533 INFO L93 Difference]: Finished difference Result 1421 states and 2354 transitions. [2022-07-21 04:36:10,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:36:10,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-07-21 04:36:10,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:10,537 INFO L225 Difference]: With dead ends: 1421 [2022-07-21 04:36:10,537 INFO L226 Difference]: Without dead ends: 841 [2022-07-21 04:36:10,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:36:10,539 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 1423 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 4655 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 5130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 4655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:10,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 2730 Invalid, 5130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 4655 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 04:36:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-07-21 04:36:10,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 581. [2022-07-21 04:36:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6073059360730593) internal successors, (704), 456 states have internal predecessors, (704), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2022-07-21 04:36:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 931 transitions. [2022-07-21 04:36:10,577 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 931 transitions. Word has length 74 [2022-07-21 04:36:10,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:10,577 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 931 transitions. [2022-07-21 04:36:10,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:10,577 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 931 transitions. [2022-07-21 04:36:10,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-21 04:36:10,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:10,578 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:36:10,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 04:36:10,578 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:10,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:10,579 INFO L85 PathProgramCache]: Analyzing trace with hash 846962418, now seen corresponding path program 1 times [2022-07-21 04:36:10,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:10,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913528809] [2022-07-21 04:36:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:10,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:10,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:10,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:10,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:10,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:10,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:10,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:36:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:10,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:36:10,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:10,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913528809] [2022-07-21 04:36:10,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913528809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:10,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:10,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:36:10,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594943271] [2022-07-21 04:36:10,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:10,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:36:10,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:10,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:36:10,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:36:10,813 INFO L87 Difference]: Start difference. First operand 581 states and 931 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 04:36:18,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:18,509 INFO L93 Difference]: Finished difference Result 2185 states and 3678 transitions. [2022-07-21 04:36:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:36:18,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2022-07-21 04:36:18,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:18,517 INFO L225 Difference]: With dead ends: 2185 [2022-07-21 04:36:18,517 INFO L226 Difference]: Without dead ends: 1622 [2022-07-21 04:36:18,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:36:18,520 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 3250 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 5446 mSolverCounterSat, 1259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3394 SdHoareTripleChecker+Valid, 2441 SdHoareTripleChecker+Invalid, 6705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1259 IncrementalHoareTripleChecker+Valid, 5446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:18,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3394 Valid, 2441 Invalid, 6705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1259 Valid, 5446 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-07-21 04:36:18,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2022-07-21 04:36:18,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1245. [2022-07-21 04:36:18,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 899 states have (on average 1.5595105672969967) internal successors, (1402), 953 states have internal predecessors, (1402), 287 states have call successors, (287), 55 states have call predecessors, (287), 58 states have return successors, (361), 279 states have call predecessors, (361), 283 states have call successors, (361) [2022-07-21 04:36:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 2050 transitions. [2022-07-21 04:36:18,627 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 2050 transitions. Word has length 75 [2022-07-21 04:36:18,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:18,627 INFO L495 AbstractCegarLoop]: Abstraction has 1245 states and 2050 transitions. [2022-07-21 04:36:18,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 04:36:18,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 2050 transitions. [2022-07-21 04:36:18,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-21 04:36:18,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:18,628 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:36:18,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 04:36:18,629 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:18,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:18,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2055109646, now seen corresponding path program 1 times [2022-07-21 04:36:18,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:18,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790969487] [2022-07-21 04:36:18,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:18,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:18,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:18,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:18,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:18,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:18,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:18,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:18,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:36:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 04:36:18,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:18,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790969487] [2022-07-21 04:36:18,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790969487] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:36:18,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434099424] [2022-07-21 04:36:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:18,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:36:18,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:36:18,936 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) [2022-07-21 04:36:18,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 04:36:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:19,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 04:36:19,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:36:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:36:19,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:36:19,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434099424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:19,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:36:19,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-21 04:36:19,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432456029] [2022-07-21 04:36:19,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:19,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:36:19,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:19,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:36:19,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:19,230 INFO L87 Difference]: Start difference. First operand 1245 states and 2050 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:19,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:19,480 INFO L93 Difference]: Finished difference Result 3607 states and 6012 transitions. [2022-07-21 04:36:19,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:36:19,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-07-21 04:36:19,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:19,491 INFO L225 Difference]: With dead ends: 3607 [2022-07-21 04:36:19,492 INFO L226 Difference]: Without dead ends: 2380 [2022-07-21 04:36:19,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:19,497 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 895 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:19,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2422 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:36:19,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2022-07-21 04:36:19,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2319. [2022-07-21 04:36:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 1676 states have (on average 1.5727923627684963) internal successors, (2636), 1784 states have internal predecessors, (2636), 531 states have call successors, (531), 100 states have call predecessors, (531), 111 states have return successors, (692), 520 states have call predecessors, (692), 527 states have call successors, (692) [2022-07-21 04:36:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 3859 transitions. [2022-07-21 04:36:19,724 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 3859 transitions. Word has length 75 [2022-07-21 04:36:19,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:19,725 INFO L495 AbstractCegarLoop]: Abstraction has 2319 states and 3859 transitions. [2022-07-21 04:36:19,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:19,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 3859 transitions. [2022-07-21 04:36:19,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-21 04:36:19,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:19,726 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:36:19,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 04:36:19,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 04:36:19,939 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:19,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:19,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1870483761, now seen corresponding path program 1 times [2022-07-21 04:36:19,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:19,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670401171] [2022-07-21 04:36:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:19,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:20,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:20,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:20,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:20,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:20,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:20,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 04:36:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 04:36:20,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:20,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670401171] [2022-07-21 04:36:20,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670401171] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:36:20,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662366484] [2022-07-21 04:36:20,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:20,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:36:20,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:36:20,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:36:20,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 04:36:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:20,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 04:36:20,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:36:20,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:36:20,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:36:20,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662366484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:20,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:36:20,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-21 04:36:20,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586813320] [2022-07-21 04:36:20,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:20,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:36:20,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:20,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:36:20,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:20,453 INFO L87 Difference]: Start difference. First operand 2319 states and 3859 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:20,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:20,736 INFO L93 Difference]: Finished difference Result 5275 states and 8851 transitions. [2022-07-21 04:36:20,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:36:20,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-07-21 04:36:20,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:20,752 INFO L225 Difference]: With dead ends: 5275 [2022-07-21 04:36:20,752 INFO L226 Difference]: Without dead ends: 2974 [2022-07-21 04:36:20,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:20,763 INFO L413 NwaCegarLoop]: 1103 mSDtfsCounter, 893 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:20,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 1927 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:36:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2022-07-21 04:36:21,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2775. [2022-07-21 04:36:21,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2025 states have (on average 1.5851851851851853) internal successors, (3210), 2150 states have internal predecessors, (3210), 616 states have call successors, (616), 121 states have call predecessors, (616), 133 states have return successors, (781), 603 states have call predecessors, (781), 612 states have call successors, (781) [2022-07-21 04:36:21,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4607 transitions. [2022-07-21 04:36:21,056 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4607 transitions. Word has length 76 [2022-07-21 04:36:21,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:21,057 INFO L495 AbstractCegarLoop]: Abstraction has 2775 states and 4607 transitions. [2022-07-21 04:36:21,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 04:36:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4607 transitions. [2022-07-21 04:36:21,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 04:36:21,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:21,058 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:36:21,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 04:36:21,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 04:36:21,271 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:21,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:21,272 INFO L85 PathProgramCache]: Analyzing trace with hash -822828035, now seen corresponding path program 1 times [2022-07-21 04:36:21,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:21,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489181912] [2022-07-21 04:36:21,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:21,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:21,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:21,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:21,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:21,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:21,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:21,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:21,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:21,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:36:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:21,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:36:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:36:21,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:21,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489181912] [2022-07-21 04:36:21,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489181912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:21,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:21,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:36:21,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322971869] [2022-07-21 04:36:21,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:21,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:36:21,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:21,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:36:21,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:36:21,505 INFO L87 Difference]: Start difference. First operand 2775 states and 4607 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 04:36:30,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:30,501 INFO L93 Difference]: Finished difference Result 10129 states and 17823 transitions. [2022-07-21 04:36:30,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 04:36:30,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2022-07-21 04:36:30,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:30,546 INFO L225 Difference]: With dead ends: 10129 [2022-07-21 04:36:30,546 INFO L226 Difference]: Without dead ends: 7372 [2022-07-21 04:36:30,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:36:30,559 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 3673 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 5652 mSolverCounterSat, 1324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3818 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 6976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1324 IncrementalHoareTripleChecker+Valid, 5652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:30,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3818 Valid, 2881 Invalid, 6976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1324 Valid, 5652 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-07-21 04:36:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2022-07-21 04:36:31,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 6107. [2022-07-21 04:36:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6107 states, 4321 states have (on average 1.562138393890303) internal successors, (6750), 4666 states have internal predecessors, (6750), 1472 states have call successors, (1472), 236 states have call predecessors, (1472), 313 states have return successors, (2358), 1470 states have call predecessors, (2358), 1466 states have call successors, (2358) [2022-07-21 04:36:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6107 states to 6107 states and 10580 transitions. [2022-07-21 04:36:31,310 INFO L78 Accepts]: Start accepts. Automaton has 6107 states and 10580 transitions. Word has length 78 [2022-07-21 04:36:31,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:31,310 INFO L495 AbstractCegarLoop]: Abstraction has 6107 states and 10580 transitions. [2022-07-21 04:36:31,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 04:36:31,311 INFO L276 IsEmpty]: Start isEmpty. Operand 6107 states and 10580 transitions. [2022-07-21 04:36:31,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 04:36:31,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:31,311 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:36:31,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 04:36:31,312 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:31,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:31,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1570138946, now seen corresponding path program 1 times [2022-07-21 04:36:31,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:31,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306359977] [2022-07-21 04:36:31,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:31,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:31,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:31,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:31,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:31,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:31,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:36:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:31,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:36:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:36:31,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:31,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306359977] [2022-07-21 04:36:31,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306359977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:31,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:31,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:36:31,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538707759] [2022-07-21 04:36:31,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:31,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:36:31,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:31,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:36:31,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:36:31,529 INFO L87 Difference]: Start difference. First operand 6107 states and 10580 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 04:36:36,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:36,052 INFO L93 Difference]: Finished difference Result 13169 states and 23162 transitions. [2022-07-21 04:36:36,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:36:36,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-07-21 04:36:36,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:36,091 INFO L225 Difference]: With dead ends: 13169 [2022-07-21 04:36:36,092 INFO L226 Difference]: Without dead ends: 7080 [2022-07-21 04:36:36,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:36,119 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 788 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:36,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 1983 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-21 04:36:36,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7080 states. [2022-07-21 04:36:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7080 to 6115. [2022-07-21 04:36:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6115 states, 4327 states have (on average 1.5608966951698637) internal successors, (6754), 4672 states have internal predecessors, (6754), 1472 states have call successors, (1472), 240 states have call predecessors, (1472), 315 states have return successors, (2348), 1468 states have call predecessors, (2348), 1466 states have call successors, (2348) [2022-07-21 04:36:36,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6115 states to 6115 states and 10574 transitions. [2022-07-21 04:36:36,861 INFO L78 Accepts]: Start accepts. Automaton has 6115 states and 10574 transitions. Word has length 79 [2022-07-21 04:36:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:36,861 INFO L495 AbstractCegarLoop]: Abstraction has 6115 states and 10574 transitions. [2022-07-21 04:36:36,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 04:36:36,861 INFO L276 IsEmpty]: Start isEmpty. Operand 6115 states and 10574 transitions. [2022-07-21 04:36:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-21 04:36:36,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:36,862 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:36:36,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 04:36:36,862 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:36,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:36,862 INFO L85 PathProgramCache]: Analyzing trace with hash -754634727, now seen corresponding path program 1 times [2022-07-21 04:36:36,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:36,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116461296] [2022-07-21 04:36:36,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:36,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:36,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:37,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:37,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:37,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:37,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:37,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:37,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:37,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:36:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:37,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:36:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:37,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:36:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 04:36:37,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:37,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116461296] [2022-07-21 04:36:37,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116461296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:37,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:37,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:36:37,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400568885] [2022-07-21 04:36:37,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:37,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:36:37,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:37,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:36:37,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:36:37,122 INFO L87 Difference]: Start difference. First operand 6115 states and 10574 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:36:47,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:47,720 INFO L93 Difference]: Finished difference Result 20884 states and 38581 transitions. [2022-07-21 04:36:47,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 04:36:47,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-07-21 04:36:47,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:47,797 INFO L225 Difference]: With dead ends: 20884 [2022-07-21 04:36:47,798 INFO L226 Difference]: Without dead ends: 14787 [2022-07-21 04:36:47,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:36:47,830 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 2477 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 5832 mSolverCounterSat, 871 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2620 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 6703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 871 IncrementalHoareTripleChecker+Valid, 5832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:47,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2620 Valid, 3060 Invalid, 6703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [871 Valid, 5832 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-21 04:36:47,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14787 states. [2022-07-21 04:36:49,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14787 to 12297. [2022-07-21 04:36:49,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12297 states, 8655 states have (on average 1.5556325823223571) internal successors, (13464), 9353 states have internal predecessors, (13464), 3008 states have call successors, (3008), 474 states have call predecessors, (3008), 633 states have return successors, (5388), 3016 states have call predecessors, (5388), 2998 states have call successors, (5388) [2022-07-21 04:36:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12297 states to 12297 states and 21860 transitions. [2022-07-21 04:36:49,406 INFO L78 Accepts]: Start accepts. Automaton has 12297 states and 21860 transitions. Word has length 87 [2022-07-21 04:36:49,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:49,406 INFO L495 AbstractCegarLoop]: Abstraction has 12297 states and 21860 transitions. [2022-07-21 04:36:49,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 04:36:49,407 INFO L276 IsEmpty]: Start isEmpty. Operand 12297 states and 21860 transitions. [2022-07-21 04:36:49,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-21 04:36:49,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:49,411 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 04:36:49,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 04:36:49,412 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:49,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:49,412 INFO L85 PathProgramCache]: Analyzing trace with hash -268847510, now seen corresponding path program 1 times [2022-07-21 04:36:49,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:49,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142713322] [2022-07-21 04:36:49,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:49,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:36:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:36:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:36:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 04:36:49,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:49,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142713322] [2022-07-21 04:36:49,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142713322] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:49,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:49,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:36:49,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475012035] [2022-07-21 04:36:49,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:49,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:36:49,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:49,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:36:49,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:36:49,644 INFO L87 Difference]: Start difference. First operand 12297 states and 21860 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:36:55,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:36:55,321 INFO L93 Difference]: Finished difference Result 26310 states and 47882 transitions. [2022-07-21 04:36:55,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:36:55,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-07-21 04:36:55,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:36:55,401 INFO L225 Difference]: With dead ends: 26310 [2022-07-21 04:36:55,401 INFO L226 Difference]: Without dead ends: 14031 [2022-07-21 04:36:55,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:36:55,455 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 795 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 2613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:36:55,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1963 Invalid, 2613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-21 04:36:55,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14031 states. [2022-07-21 04:36:56,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14031 to 12337. [2022-07-21 04:36:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12337 states, 8691 states have (on average 1.5537912783339087) internal successors, (13504), 9381 states have internal predecessors, (13504), 3008 states have call successors, (3008), 490 states have call predecessors, (3008), 637 states have return successors, (5374), 3012 states have call predecessors, (5374), 2998 states have call successors, (5374) [2022-07-21 04:36:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12337 states to 12337 states and 21886 transitions. [2022-07-21 04:36:57,002 INFO L78 Accepts]: Start accepts. Automaton has 12337 states and 21886 transitions. Word has length 88 [2022-07-21 04:36:57,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:36:57,002 INFO L495 AbstractCegarLoop]: Abstraction has 12337 states and 21886 transitions. [2022-07-21 04:36:57,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 04:36:57,003 INFO L276 IsEmpty]: Start isEmpty. Operand 12337 states and 21886 transitions. [2022-07-21 04:36:57,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 04:36:57,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:36:57,005 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-21 04:36:57,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 04:36:57,006 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:36:57,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:36:57,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1198161924, now seen corresponding path program 1 times [2022-07-21 04:36:57,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:36:57,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383531484] [2022-07-21 04:36:57,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:36:57,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:36:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:57,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:57,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:57,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:36:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:57,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:36:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:57,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:36:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:57,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:36:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:57,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:36:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:57,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:36:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:57,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:36:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:57,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:36:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:57,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:36:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:36:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:36:57,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:36:57,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383531484] [2022-07-21 04:36:57,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383531484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:36:57,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:36:57,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:36:57,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010375736] [2022-07-21 04:36:57,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:36:57,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:36:57,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:36:57,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:36:57,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:36:57,260 INFO L87 Difference]: Start difference. First operand 12337 states and 21886 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 04:37:09,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:37:09,577 INFO L93 Difference]: Finished difference Result 41909 states and 82528 transitions. [2022-07-21 04:37:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 04:37:09,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-07-21 04:37:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:37:09,784 INFO L225 Difference]: With dead ends: 41909 [2022-07-21 04:37:09,784 INFO L226 Difference]: Without dead ends: 29590 [2022-07-21 04:37:09,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:37:09,855 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 3573 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 5662 mSolverCounterSat, 1292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3716 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 6954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1292 IncrementalHoareTripleChecker+Valid, 5662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:37:09,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3716 Valid, 3040 Invalid, 6954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1292 Valid, 5662 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-07-21 04:37:09,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29590 states. [2022-07-21 04:37:13,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29590 to 24721. [2022-07-21 04:37:13,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24721 states, 17406 states have (on average 1.5502700218315524) internal successors, (26984), 18787 states have internal predecessors, (26984), 6029 states have call successors, (6029), 974 states have call predecessors, (6029), 1285 states have return successors, (12470), 6058 states have call predecessors, (12470), 6011 states have call successors, (12470) [2022-07-21 04:37:13,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24721 states to 24721 states and 45483 transitions. [2022-07-21 04:37:13,419 INFO L78 Accepts]: Start accepts. Automaton has 24721 states and 45483 transitions. Word has length 97 [2022-07-21 04:37:13,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:37:13,420 INFO L495 AbstractCegarLoop]: Abstraction has 24721 states and 45483 transitions. [2022-07-21 04:37:13,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 04:37:13,420 INFO L276 IsEmpty]: Start isEmpty. Operand 24721 states and 45483 transitions. [2022-07-21 04:37:13,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 04:37:13,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:37:13,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-07-21 04:37:13,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 04:37:13,422 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:37:13,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:37:13,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1945989841, now seen corresponding path program 1 times [2022-07-21 04:37:13,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:37:13,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521283520] [2022-07-21 04:37:13,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:37:13,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:37:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:13,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:37:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:13,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:37:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:13,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:37:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:13,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:37:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:13,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:37:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:13,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:37:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:13,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:37:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:13,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:37:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:13,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:37:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:13,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:37:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:13,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:37:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 04:37:13,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:37:13,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521283520] [2022-07-21 04:37:13,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521283520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:37:13,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:37:13,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:37:13,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993662432] [2022-07-21 04:37:13,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:37:13,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:37:13,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:37:13,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:37:13,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:37:13,672 INFO L87 Difference]: Start difference. First operand 24721 states and 45483 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:37:21,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:37:21,271 INFO L93 Difference]: Finished difference Result 52757 states and 101091 transitions. [2022-07-21 04:37:21,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:37:21,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2022-07-21 04:37:21,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:37:21,504 INFO L225 Difference]: With dead ends: 52757 [2022-07-21 04:37:21,504 INFO L226 Difference]: Without dead ends: 28054 [2022-07-21 04:37:21,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:37:21,617 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 1398 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:37:21,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1814 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-21 04:37:21,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28054 states. [2022-07-21 04:37:24,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28054 to 24801. [2022-07-21 04:37:24,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24801 states, 17478 states have (on average 1.548460922302323) internal successors, (27064), 18859 states have internal predecessors, (27064), 6029 states have call successors, (6029), 990 states have call predecessors, (6029), 1293 states have return successors, (12454), 6050 states have call predecessors, (12454), 6011 states have call successors, (12454) [2022-07-21 04:37:25,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24801 states to 24801 states and 45547 transitions. [2022-07-21 04:37:25,094 INFO L78 Accepts]: Start accepts. Automaton has 24801 states and 45547 transitions. Word has length 98 [2022-07-21 04:37:25,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:37:25,094 INFO L495 AbstractCegarLoop]: Abstraction has 24801 states and 45547 transitions. [2022-07-21 04:37:25,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 04:37:25,095 INFO L276 IsEmpty]: Start isEmpty. Operand 24801 states and 45547 transitions. [2022-07-21 04:37:25,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 04:37:25,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:37:25,096 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2022-07-21 04:37:25,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 04:37:25,097 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:37:25,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:37:25,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1156940538, now seen corresponding path program 1 times [2022-07-21 04:37:25,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:37:25,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99812256] [2022-07-21 04:37:25,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:37:25,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:37:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:25,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:37:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:25,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:37:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:25,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:37:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:25,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:37:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:25,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:37:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:25,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:37:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:25,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:37:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:25,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:37:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:25,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:37:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:25,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 04:37:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:25,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 04:37:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:25,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 04:37:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:25,334 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:37:25,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:37:25,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99812256] [2022-07-21 04:37:25,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99812256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:37:25,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:37:25,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 04:37:25,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919659859] [2022-07-21 04:37:25,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:37:25,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:37:25,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:37:25,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:37:25,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:37:25,338 INFO L87 Difference]: Start difference. First operand 24801 states and 45547 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:37:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:37:41,870 INFO L93 Difference]: Finished difference Result 83254 states and 176843 transitions. [2022-07-21 04:37:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 04:37:41,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2022-07-21 04:37:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:37:42,465 INFO L225 Difference]: With dead ends: 83254 [2022-07-21 04:37:42,466 INFO L226 Difference]: Without dead ends: 58471 [2022-07-21 04:37:42,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:37:42,604 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 3537 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 5739 mSolverCounterSat, 1281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3680 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 7020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1281 IncrementalHoareTripleChecker+Valid, 5739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:37:42,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3680 Valid, 3007 Invalid, 7020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1281 Valid, 5739 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-07-21 04:37:42,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58471 states. [2022-07-21 04:37:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58471 to 49735. [2022-07-21 04:37:49,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49735 states, 35047 states have (on average 1.545353382600508) internal successors, (54160), 37811 states have internal predecessors, (54160), 12078 states have call successors, (12078), 1974 states have call predecessors, (12078), 2609 states have return successors, (30158), 12152 states have call predecessors, (30158), 12044 states have call successors, (30158) [2022-07-21 04:37:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49735 states to 49735 states and 96396 transitions. [2022-07-21 04:37:49,895 INFO L78 Accepts]: Start accepts. Automaton has 49735 states and 96396 transitions. Word has length 108 [2022-07-21 04:37:49,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:37:49,895 INFO L495 AbstractCegarLoop]: Abstraction has 49735 states and 96396 transitions. [2022-07-21 04:37:49,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 04:37:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand 49735 states and 96396 transitions. [2022-07-21 04:37:49,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-21 04:37:49,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:37:49,898 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:37:49,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 04:37:49,898 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:37:49,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:37:49,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1577757264, now seen corresponding path program 1 times [2022-07-21 04:37:49,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:37:49,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271195363] [2022-07-21 04:37:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:37:49,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:37:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:37:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:37:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:37:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:37:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:37:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:37:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:37:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:37:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:37:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:37:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:37:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 04:37:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:37:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 04:37:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 04:37:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 04:37:50,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:37:50,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271195363] [2022-07-21 04:37:50,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271195363] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:37:50,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111003237] [2022-07-21 04:37:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:37:50,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:37:50,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:37:50,292 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:37:50,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 04:37:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:37:50,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 04:37:50,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:37:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 04:37:50,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:37:50,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111003237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:37:50,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:37:50,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-21 04:37:50,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033582768] [2022-07-21 04:37:50,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:37:50,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:37:50,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:37:50,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:37:50,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:37:50,713 INFO L87 Difference]: Start difference. First operand 49735 states and 96396 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 04:38:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:38:07,331 INFO L93 Difference]: Finished difference Result 145664 states and 296985 transitions. [2022-07-21 04:38:07,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 04:38:07,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 137 [2022-07-21 04:38:07,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:38:08,241 INFO L225 Difference]: With dead ends: 145664 [2022-07-21 04:38:08,241 INFO L226 Difference]: Without dead ends: 95947 [2022-07-21 04:38:08,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-07-21 04:38:08,702 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 2661 mSDsluCounter, 1910 mSDsCounter, 0 mSdLazyCounter, 6765 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2845 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 7420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 6765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:38:08,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2845 Valid, 3547 Invalid, 7420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 6765 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-21 04:38:08,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95947 states.