./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_spec2_product32.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 256d604ca5845ed70fae4c0c59880096896900821991ad09252cbc35739a584c --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:08:32,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:08:32,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:08:32,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:08:32,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:08:32,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:08:32,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:08:32,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:08:32,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:08:32,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:08:32,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:08:32,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:08:32,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:08:32,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:08:32,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:08:32,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:08:32,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:08:32,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:08:32,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:08:32,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:08:32,689 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:08:32,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:08:32,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:08:32,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:08:32,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:08:32,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:08:32,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:08:32,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:08:32,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:08:32,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:08:32,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:08:32,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:08:32,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:08:32,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:08:32,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:08:32,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:08:32,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:08:32,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:08:32,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:08:32,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:08:32,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:08:32,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:08:32,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:08:32,740 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:08:32,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:08:32,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:08:32,741 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:08:32,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:08:32,742 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:08:32,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:08:32,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:08:32,743 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:08:32,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:08:32,744 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:08:32,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:08:32,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:08:32,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:08:32,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:08:32,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:08:32,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:08:32,745 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:08:32,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:08:32,747 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:08:32,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:08:32,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:08:32,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:08:32,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:08:32,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:08:32,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:08:32,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:08:32,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:08:32,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:08:32,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:08:32,749 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:08:32,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:08:32,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:08:32,750 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 256d604ca5845ed70fae4c0c59880096896900821991ad09252cbc35739a584c [2022-07-22 17:08:32,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:08:32,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:08:32,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:08:32,997 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:08:32,998 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:08:32,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c [2022-07-22 17:08:33,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd1494c4/a698468adf6a473fb775a61267201bcc/FLAG289e95f0f [2022-07-22 17:08:33,626 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:08:33,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c [2022-07-22 17:08:33,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd1494c4/a698468adf6a473fb775a61267201bcc/FLAG289e95f0f [2022-07-22 17:08:33,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd1494c4/a698468adf6a473fb775a61267201bcc [2022-07-22 17:08:33,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:08:33,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:08:33,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:08:33,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:08:33,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:08:33,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:08:33" (1/1) ... [2022-07-22 17:08:33,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570fe4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:08:33, skipping insertion in model container [2022-07-22 17:08:33,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:08:33" (1/1) ... [2022-07-22 17:08:33,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:08:33,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:08:34,355 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_spec2_product32.cil.c[40079,40092] [2022-07-22 17:08:34,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:08:34,472 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:08:34,553 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_spec2_product32.cil.c[40079,40092] [2022-07-22 17:08:34,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:08:34,625 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:08:34,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:08:34 WrapperNode [2022-07-22 17:08:34,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:08:34,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:08:34,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:08:34,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:08:34,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:08:34" (1/1) ... [2022-07-22 17:08:34,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:08:34" (1/1) ... [2022-07-22 17:08:34,722 INFO L137 Inliner]: procedures = 99, calls = 355, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 981 [2022-07-22 17:08:34,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:08:34,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:08:34,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:08:34,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:08:34,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:08:34" (1/1) ... [2022-07-22 17:08:34,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:08:34" (1/1) ... [2022-07-22 17:08:34,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:08:34" (1/1) ... [2022-07-22 17:08:34,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:08:34" (1/1) ... [2022-07-22 17:08:34,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:08:34" (1/1) ... [2022-07-22 17:08:34,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:08:34" (1/1) ... [2022-07-22 17:08:34,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:08:34" (1/1) ... [2022-07-22 17:08:34,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:08:34,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:08:34,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:08:34,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:08:34,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:08:34" (1/1) ... [2022-07-22 17:08:34,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:08:34,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:08:34,877 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) [2022-07-22 17:08:34,900 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 [2022-07-22 17:08:34,915 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-22 17:08:34,916 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-22 17:08:34,916 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-22 17:08:34,916 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-22 17:08:34,916 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-22 17:08:34,916 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-22 17:08:34,916 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-07-22 17:08:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-07-22 17:08:34,917 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-22 17:08:34,918 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-22 17:08:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-22 17:08:34,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-22 17:08:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-22 17:08:34,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-22 17:08:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-22 17:08:34,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-22 17:08:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-22 17:08:34,919 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-22 17:08:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-22 17:08:34,919 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-22 17:08:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-22 17:08:34,919 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-22 17:08:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:08:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-22 17:08:34,920 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-07-22 17:08:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-22 17:08:34,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-22 17:08:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-22 17:08:34,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-22 17:08:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-22 17:08:34,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-22 17:08:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-22 17:08:34,921 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-22 17:08:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-22 17:08:34,922 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-22 17:08:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-22 17:08:34,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-22 17:08:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-22 17:08:34,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-22 17:08:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-22 17:08:34,923 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-22 17:08:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-22 17:08:34,923 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-22 17:08:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-22 17:08:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-22 17:08:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-22 17:08:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-22 17:08:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-22 17:08:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-22 17:08:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:08:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-22 17:08:34,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-22 17:08:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:08:34,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:08:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-22 17:08:34,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-22 17:08:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-07-22 17:08:34,928 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-07-22 17:08:35,110 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:08:35,116 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:08:36,146 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:08:36,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:08:36,163 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 17:08:36,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:08:36 BoogieIcfgContainer [2022-07-22 17:08:36,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:08:36,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:08:36,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:08:36,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:08:36,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:08:33" (1/3) ... [2022-07-22 17:08:36,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ef0ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:08:36, skipping insertion in model container [2022-07-22 17:08:36,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:08:34" (2/3) ... [2022-07-22 17:08:36,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ef0ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:08:36, skipping insertion in model container [2022-07-22 17:08:36,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:08:36" (3/3) ... [2022-07-22 17:08:36,175 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product32.cil.c [2022-07-22 17:08:36,186 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:08:36,186 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:08:36,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:08:36,262 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@a565609, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7ef47dec [2022-07-22 17:08:36,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:08:36,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 605 states, 471 states have (on average 1.6772823779193207) internal successors, (790), 494 states have internal predecessors, (790), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-22 17:08:36,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-22 17:08:36,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:08:36,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:08:36,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:08:36,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:08:36,301 INFO L85 PathProgramCache]: Analyzing trace with hash -782155594, now seen corresponding path program 1 times [2022-07-22 17:08:36,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:08:36,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982118731] [2022-07-22 17:08:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:08:36,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:08:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:36,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:08:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:36,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:08:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:37,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 17:08:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:37,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:37,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:08:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:08:37,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:08:37,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982118731] [2022-07-22 17:08:37,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982118731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:08:37,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:08:37,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:08:37,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564632947] [2022-07-22 17:08:37,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:08:37,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:08:37,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:08:37,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:08:37,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:08:37,129 INFO L87 Difference]: Start difference. First operand has 605 states, 471 states have (on average 1.6772823779193207) internal successors, (790), 494 states have internal predecessors, (790), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:08:41,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:08:41,610 INFO L93 Difference]: Finished difference Result 1353 states and 2269 transitions. [2022-07-22 17:08:41,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:08:41,616 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-07-22 17:08:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:08:41,643 INFO L225 Difference]: With dead ends: 1353 [2022-07-22 17:08:41,644 INFO L226 Difference]: Without dead ends: 760 [2022-07-22 17:08:41,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:08:41,666 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 1194 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 2600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:08:41,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 1754 Invalid, 2600 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [317 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-22 17:08:41,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-07-22 17:08:41,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 597. [2022-07-22 17:08:41,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 465 states have (on average 1.6731182795698925) internal successors, (778), 486 states have internal predecessors, (778), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-22 17:08:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 983 transitions. [2022-07-22 17:08:41,804 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 983 transitions. Word has length 60 [2022-07-22 17:08:41,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:08:41,805 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 983 transitions. [2022-07-22 17:08:41,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:08:41,805 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 983 transitions. [2022-07-22 17:08:41,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-22 17:08:41,809 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:08:41,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:08:41,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:08:41,810 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:08:41,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:08:41,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1355604, now seen corresponding path program 1 times [2022-07-22 17:08:41,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:08:41,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487856160] [2022-07-22 17:08:41,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:08:41,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:08:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:41,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:08:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:41,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:08:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:42,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 17:08:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:42,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:42,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:42,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:08:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:08:42,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:08:42,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487856160] [2022-07-22 17:08:42,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487856160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:08:42,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:08:42,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:08:42,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262980332] [2022-07-22 17:08:42,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:08:42,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:08:42,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:08:42,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:08:42,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:08:42,178 INFO L87 Difference]: Start difference. First operand 597 states and 983 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, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:08:46,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:08:46,751 INFO L93 Difference]: Finished difference Result 1339 states and 2235 transitions. [2022-07-22 17:08:46,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:08:46,752 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, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-07-22 17:08:46,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:08:46,758 INFO L225 Difference]: With dead ends: 1339 [2022-07-22 17:08:46,758 INFO L226 Difference]: Without dead ends: 760 [2022-07-22 17:08:46,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:08:46,762 INFO L413 NwaCegarLoop]: 896 mSDtfsCounter, 717 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:08:46,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 1740 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-22 17:08:46,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-07-22 17:08:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 597. [2022-07-22 17:08:46,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 465 states have (on average 1.6709677419354838) internal successors, (777), 486 states have internal predecessors, (777), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-22 17:08:46,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 982 transitions. [2022-07-22 17:08:46,823 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 982 transitions. Word has length 63 [2022-07-22 17:08:46,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:08:46,823 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 982 transitions. [2022-07-22 17:08:46,823 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, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:08:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 982 transitions. [2022-07-22 17:08:46,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 17:08:46,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:08:46,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:08:46,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:08:46,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:08:46,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:08:46,827 INFO L85 PathProgramCache]: Analyzing trace with hash -370405055, now seen corresponding path program 1 times [2022-07-22 17:08:46,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:08:46,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470574039] [2022-07-22 17:08:46,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:08:46,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:08:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:46,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:08:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:46,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:46,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:08:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:47,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 17:08:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:47,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:47,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:08:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:08:47,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:08:47,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470574039] [2022-07-22 17:08:47,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470574039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:08:47,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:08:47,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:08:47,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463827668] [2022-07-22 17:08:47,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:08:47,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:08:47,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:08:47,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:08:47,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:08:47,166 INFO L87 Difference]: Start difference. First operand 597 states and 982 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:08:51,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:08:51,059 INFO L93 Difference]: Finished difference Result 1339 states and 2234 transitions. [2022-07-22 17:08:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:08:51,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-07-22 17:08:51,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:08:51,065 INFO L225 Difference]: With dead ends: 1339 [2022-07-22 17:08:51,065 INFO L226 Difference]: Without dead ends: 760 [2022-07-22 17:08:51,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:08:51,069 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 714 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:08:51,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1755 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-22 17:08:51,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-07-22 17:08:51,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 597. [2022-07-22 17:08:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 465 states have (on average 1.6688172043010752) internal successors, (776), 486 states have internal predecessors, (776), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-22 17:08:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 981 transitions. [2022-07-22 17:08:51,122 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 981 transitions. Word has length 64 [2022-07-22 17:08:51,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:08:51,122 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 981 transitions. [2022-07-22 17:08:51,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:08:51,123 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 981 transitions. [2022-07-22 17:08:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 17:08:51,124 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:08:51,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:08:51,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:08:51,125 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:08:51,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:08:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash 111803336, now seen corresponding path program 1 times [2022-07-22 17:08:51,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:08:51,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547151461] [2022-07-22 17:08:51,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:08:51,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:08:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:51,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:08:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:51,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:51,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 17:08:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:51,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:08:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:51,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:51,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:51,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:08:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:51,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:08:51,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:08:51,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547151461] [2022-07-22 17:08:51,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547151461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:08:51,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:08:51,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:08:51,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381198839] [2022-07-22 17:08:51,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:08:51,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:08:51,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:08:51,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:08:51,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:08:51,409 INFO L87 Difference]: Start difference. First operand 597 states and 981 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:08:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:08:55,318 INFO L93 Difference]: Finished difference Result 1339 states and 2233 transitions. [2022-07-22 17:08:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:08:55,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-22 17:08:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:08:55,324 INFO L225 Difference]: With dead ends: 1339 [2022-07-22 17:08:55,324 INFO L226 Difference]: Without dead ends: 760 [2022-07-22 17:08:55,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:08:55,329 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 1180 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 2594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:08:55,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 1736 Invalid, 2594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-22 17:08:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-07-22 17:08:55,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 597. [2022-07-22 17:08:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 465 states have (on average 1.6666666666666667) internal successors, (775), 486 states have internal predecessors, (775), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-22 17:08:55,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 980 transitions. [2022-07-22 17:08:55,382 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 980 transitions. Word has length 65 [2022-07-22 17:08:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:08:55,382 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 980 transitions. [2022-07-22 17:08:55,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:08:55,383 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 980 transitions. [2022-07-22 17:08:55,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 17:08:55,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:08:55,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:08:55,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:08:55,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:08:55,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:08:55,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1213201053, now seen corresponding path program 1 times [2022-07-22 17:08:55,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:08:55,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744054068] [2022-07-22 17:08:55,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:08:55,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:08:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:55,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:08:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:55,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 17:08:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:55,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 17:08:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:55,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:55,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:08:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:08:55,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:08:55,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744054068] [2022-07-22 17:08:55,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744054068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:08:55,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:08:55,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:08:55,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295844479] [2022-07-22 17:08:55,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:08:55,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:08:55,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:08:55,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:08:55,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:08:55,687 INFO L87 Difference]: Start difference. First operand 597 states and 980 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:08:59,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:08:59,093 INFO L93 Difference]: Finished difference Result 1339 states and 2232 transitions. [2022-07-22 17:08:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:08:59,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-22 17:08:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:08:59,098 INFO L225 Difference]: With dead ends: 1339 [2022-07-22 17:08:59,098 INFO L226 Difference]: Without dead ends: 760 [2022-07-22 17:08:59,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:08:59,101 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 1181 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 2598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:08:59,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 1712 Invalid, 2598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 17:08:59,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-07-22 17:08:59,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 597. [2022-07-22 17:08:59,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 465 states have (on average 1.664516129032258) internal successors, (774), 486 states have internal predecessors, (774), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-22 17:08:59,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 979 transitions. [2022-07-22 17:08:59,153 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 979 transitions. Word has length 66 [2022-07-22 17:08:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:08:59,153 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 979 transitions. [2022-07-22 17:08:59,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:08:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 979 transitions. [2022-07-22 17:08:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 17:08:59,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:08:59,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:08:59,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:08:59,155 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:08:59,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:08:59,156 INFO L85 PathProgramCache]: Analyzing trace with hash 34631396, now seen corresponding path program 1 times [2022-07-22 17:08:59,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:08:59,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186209859] [2022-07-22 17:08:59,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:08:59,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:08:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:59,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:08:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:59,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:59,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:08:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:59,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:08:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:59,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:59,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:08:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:59,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:08:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:08:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:08:59,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:08:59,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186209859] [2022-07-22 17:08:59,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186209859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:08:59,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:08:59,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 17:08:59,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095662833] [2022-07-22 17:08:59,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:08:59,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:08:59,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:08:59,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:08:59,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:08:59,528 INFO L87 Difference]: Start difference. First operand 597 states and 979 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 17:09:04,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:09:04,870 INFO L93 Difference]: Finished difference Result 1316 states and 2182 transitions. [2022-07-22 17:09:04,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:09:04,871 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2022-07-22 17:09:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:09:04,875 INFO L225 Difference]: With dead ends: 1316 [2022-07-22 17:09:04,875 INFO L226 Difference]: Without dead ends: 786 [2022-07-22 17:09:04,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:09:04,881 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 1315 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 6429 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 6756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 6429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:09:04,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 3270 Invalid, 6756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 6429 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-22 17:09:04,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-07-22 17:09:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 610. [2022-07-22 17:09:04,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 475 states have (on average 1.6610526315789473) internal successors, (789), 498 states have internal predecessors, (789), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-22 17:09:04,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 998 transitions. [2022-07-22 17:09:04,951 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 998 transitions. Word has length 67 [2022-07-22 17:09:04,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:09:04,951 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 998 transitions. [2022-07-22 17:09:04,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 17:09:04,952 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 998 transitions. [2022-07-22 17:09:04,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 17:09:04,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:09:04,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:09:04,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:09:04,954 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:09:04,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:09:04,955 INFO L85 PathProgramCache]: Analyzing trace with hash -205908733, now seen corresponding path program 1 times [2022-07-22 17:09:04,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:09:04,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49991928] [2022-07-22 17:09:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:09:04,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:09:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:09:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:05,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:09:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:05,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:09:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:05,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:05,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:05,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:09:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:09:05,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:09:05,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49991928] [2022-07-22 17:09:05,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49991928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:09:05,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:09:05,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:09:05,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051049311] [2022-07-22 17:09:05,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:09:05,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:09:05,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:09:05,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:09:05,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:09:05,246 INFO L87 Difference]: Start difference. First operand 610 states and 998 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:09:08,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:09:08,700 INFO L93 Difference]: Finished difference Result 1330 states and 2205 transitions. [2022-07-22 17:09:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:09:08,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-07-22 17:09:08,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:09:08,705 INFO L225 Difference]: With dead ends: 1330 [2022-07-22 17:09:08,705 INFO L226 Difference]: Without dead ends: 782 [2022-07-22 17:09:08,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:09:08,709 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 1240 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 2596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 2248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:09:08,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 1668 Invalid, 2596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-22 17:09:08,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-07-22 17:09:08,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 610. [2022-07-22 17:09:08,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 475 states have (on average 1.6505263157894736) internal successors, (784), 498 states have internal predecessors, (784), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-22 17:09:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 993 transitions. [2022-07-22 17:09:08,765 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 993 transitions. Word has length 67 [2022-07-22 17:09:08,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:09:08,765 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 993 transitions. [2022-07-22 17:09:08,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:09:08,766 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 993 transitions. [2022-07-22 17:09:08,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 17:09:08,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:09:08,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:09:08,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:09:08,767 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:09:08,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:09:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1385123930, now seen corresponding path program 1 times [2022-07-22 17:09:08,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:09:08,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145162281] [2022-07-22 17:09:08,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:09:08,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:09:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:09:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:08,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:08,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:09:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:09,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 17:09:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:09,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:09,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:09:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:09:09,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:09:09,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145162281] [2022-07-22 17:09:09,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145162281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:09:09,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:09:09,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:09:09,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201039308] [2022-07-22 17:09:09,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:09:09,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:09:09,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:09:09,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:09:09,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:09:09,093 INFO L87 Difference]: Start difference. First operand 610 states and 993 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:09:12,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:09:12,394 INFO L93 Difference]: Finished difference Result 1330 states and 2200 transitions. [2022-07-22 17:09:12,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:09:12,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-07-22 17:09:12,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:09:12,398 INFO L225 Difference]: With dead ends: 1330 [2022-07-22 17:09:12,399 INFO L226 Difference]: Without dead ends: 782 [2022-07-22 17:09:12,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:09:12,402 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 1245 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:09:12,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 1638 Invalid, 2584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 17:09:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-07-22 17:09:12,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 610. [2022-07-22 17:09:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 475 states have (on average 1.64) internal successors, (779), 498 states have internal predecessors, (779), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-22 17:09:12,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 988 transitions. [2022-07-22 17:09:12,458 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 988 transitions. Word has length 68 [2022-07-22 17:09:12,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:09:12,459 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 988 transitions. [2022-07-22 17:09:12,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:09:12,459 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 988 transitions. [2022-07-22 17:09:12,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 17:09:12,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:09:12,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:09:12,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:09:12,461 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:09:12,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:09:12,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1529572568, now seen corresponding path program 1 times [2022-07-22 17:09:12,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:09:12,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303924153] [2022-07-22 17:09:12,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:09:12,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:09:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:12,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:09:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:09:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:12,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 17:09:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:12,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:12,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:12,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:09:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:09:12,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:09:12,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303924153] [2022-07-22 17:09:12,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303924153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:09:12,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:09:12,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:09:12,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310934539] [2022-07-22 17:09:12,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:09:12,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:09:12,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:09:12,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:09:12,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:09:12,764 INFO L87 Difference]: Start difference. First operand 610 states and 988 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:09:16,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:09:16,459 INFO L93 Difference]: Finished difference Result 1330 states and 2195 transitions. [2022-07-22 17:09:16,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:09:16,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-07-22 17:09:16,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:09:16,464 INFO L225 Difference]: With dead ends: 1330 [2022-07-22 17:09:16,465 INFO L226 Difference]: Without dead ends: 782 [2022-07-22 17:09:16,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:09:16,467 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 783 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 2569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:09:16,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1651 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-22 17:09:16,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-07-22 17:09:16,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 610. [2022-07-22 17:09:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 475 states have (on average 1.6294736842105264) internal successors, (774), 498 states have internal predecessors, (774), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-22 17:09:16,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 983 transitions. [2022-07-22 17:09:16,545 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 983 transitions. Word has length 69 [2022-07-22 17:09:16,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:09:16,545 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 983 transitions. [2022-07-22 17:09:16,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:09:16,546 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 983 transitions. [2022-07-22 17:09:16,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 17:09:16,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:09:16,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:09:16,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:09:16,548 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:09:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:09:16,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1086078261, now seen corresponding path program 1 times [2022-07-22 17:09:16,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:09:16,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298298842] [2022-07-22 17:09:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:09:16,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:09:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:16,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:09:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:16,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:16,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:09:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:16,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:09:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:16,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:16,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:16,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:09:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:09:16,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:09:16,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298298842] [2022-07-22 17:09:16,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298298842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:09:16,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:09:16,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:09:16,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746810853] [2022-07-22 17:09:16,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:09:16,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:09:16,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:09:16,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:09:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:09:16,906 INFO L87 Difference]: Start difference. First operand 610 states and 983 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 17:09:21,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:09:21,964 INFO L93 Difference]: Finished difference Result 1322 states and 2172 transitions. [2022-07-22 17:09:21,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:09:21,964 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-07-22 17:09:21,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:09:21,968 INFO L225 Difference]: With dead ends: 1322 [2022-07-22 17:09:21,968 INFO L226 Difference]: Without dead ends: 789 [2022-07-22 17:09:21,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:09:21,970 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 786 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 4824 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 4990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 4824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:09:21,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 2616 Invalid, 4990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 4824 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-22 17:09:21,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-07-22 17:09:22,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 610. [2022-07-22 17:09:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 475 states have (on average 1.6273684210526316) internal successors, (773), 498 states have internal predecessors, (773), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-22 17:09:22,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 982 transitions. [2022-07-22 17:09:22,032 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 982 transitions. Word has length 70 [2022-07-22 17:09:22,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:09:22,032 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 982 transitions. [2022-07-22 17:09:22,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 17:09:22,033 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 982 transitions. [2022-07-22 17:09:22,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 17:09:22,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:09:22,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:09:22,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:09:22,034 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:09:22,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:09:22,035 INFO L85 PathProgramCache]: Analyzing trace with hash 338971051, now seen corresponding path program 1 times [2022-07-22 17:09:22,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:09:22,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583346904] [2022-07-22 17:09:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:09:22,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:09:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:22,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:09:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:22,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:22,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:09:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:22,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 17:09:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:22,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:22,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:22,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:09:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:09:22,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:09:22,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583346904] [2022-07-22 17:09:22,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583346904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:09:22,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:09:22,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:09:22,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961732927] [2022-07-22 17:09:22,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:09:22,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:09:22,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:09:22,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:09:22,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:09:22,337 INFO L87 Difference]: Start difference. First operand 610 states and 982 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:09:25,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:09:25,586 INFO L93 Difference]: Finished difference Result 1330 states and 2187 transitions. [2022-07-22 17:09:25,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:09:25,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-22 17:09:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:09:25,591 INFO L225 Difference]: With dead ends: 1330 [2022-07-22 17:09:25,591 INFO L226 Difference]: Without dead ends: 782 [2022-07-22 17:09:25,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:09:25,594 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 1248 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:09:25,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 1656 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 17:09:25,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-07-22 17:09:25,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 610. [2022-07-22 17:09:25,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 475 states have (on average 1.6168421052631579) internal successors, (768), 498 states have internal predecessors, (768), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-22 17:09:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 977 transitions. [2022-07-22 17:09:25,653 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 977 transitions. Word has length 70 [2022-07-22 17:09:25,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:09:25,654 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 977 transitions. [2022-07-22 17:09:25,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:09:25,654 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 977 transitions. [2022-07-22 17:09:25,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-22 17:09:25,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:09:25,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:09:25,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:09:25,656 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:09:25,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:09:25,656 INFO L85 PathProgramCache]: Analyzing trace with hash -736902229, now seen corresponding path program 1 times [2022-07-22 17:09:25,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:09:25,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267439360] [2022-07-22 17:09:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:09:25,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:09:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:25,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:09:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:25,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:25,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:09:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:25,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:09:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:25,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:25,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:25,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:09:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:09:25,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:09:26,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267439360] [2022-07-22 17:09:26,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267439360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:09:26,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:09:26,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:09:26,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203945176] [2022-07-22 17:09:26,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:09:26,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:09:26,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:09:26,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:09:26,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:09:26,002 INFO L87 Difference]: Start difference. First operand 610 states and 977 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 17:09:30,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:09:30,599 INFO L93 Difference]: Finished difference Result 1343 states and 2197 transitions. [2022-07-22 17:09:30,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:09:30,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2022-07-22 17:09:30,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:09:30,603 INFO L225 Difference]: With dead ends: 1343 [2022-07-22 17:09:30,604 INFO L226 Difference]: Without dead ends: 807 [2022-07-22 17:09:30,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:09:30,606 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 1262 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 4617 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 4952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 4617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:09:30,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 2610 Invalid, 4952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 4617 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-22 17:09:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-07-22 17:09:30,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 613. [2022-07-22 17:09:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 478 states have (on average 1.610878661087866) internal successors, (770), 501 states have internal predecessors, (770), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-22 17:09:30,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 979 transitions. [2022-07-22 17:09:30,667 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 979 transitions. Word has length 71 [2022-07-22 17:09:30,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:09:30,667 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 979 transitions. [2022-07-22 17:09:30,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 17:09:30,668 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 979 transitions. [2022-07-22 17:09:30,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-22 17:09:30,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:09:30,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:09:30,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:09:30,670 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:09:30,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:09:30,670 INFO L85 PathProgramCache]: Analyzing trace with hash 185765197, now seen corresponding path program 1 times [2022-07-22 17:09:30,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:09:30,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120560010] [2022-07-22 17:09:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:09:30,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:09:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:30,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:09:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:30,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:30,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:09:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:30,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:09:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:31,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:31,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:09:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:09:31,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:09:31,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120560010] [2022-07-22 17:09:31,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120560010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:09:31,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:09:31,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:09:31,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133565843] [2022-07-22 17:09:31,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:09:31,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:09:31,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:09:31,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:09:31,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:09:31,012 INFO L87 Difference]: Start difference. First operand 613 states and 979 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:09:34,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:09:34,224 INFO L93 Difference]: Finished difference Result 1339 states and 2188 transitions. [2022-07-22 17:09:34,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:09:34,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-07-22 17:09:34,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:09:34,229 INFO L225 Difference]: With dead ends: 1339 [2022-07-22 17:09:34,229 INFO L226 Difference]: Without dead ends: 788 [2022-07-22 17:09:34,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:09:34,231 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 1247 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:09:34,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 1656 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 17:09:34,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-07-22 17:09:34,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 613. [2022-07-22 17:09:34,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 478 states have (on average 1.600418410041841) internal successors, (765), 501 states have internal predecessors, (765), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-22 17:09:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 974 transitions. [2022-07-22 17:09:34,293 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 974 transitions. Word has length 71 [2022-07-22 17:09:34,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:09:34,293 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 974 transitions. [2022-07-22 17:09:34,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:09:34,294 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 974 transitions. [2022-07-22 17:09:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 17:09:34,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:09:34,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:09:34,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 17:09:34,295 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:09:34,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:09:34,296 INFO L85 PathProgramCache]: Analyzing trace with hash 409253328, now seen corresponding path program 1 times [2022-07-22 17:09:34,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:09:34,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192821261] [2022-07-22 17:09:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:09:34,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:09:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:34,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:09:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:34,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:09:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:34,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:09:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:34,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:34,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:34,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:09:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:09:34,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:09:34,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192821261] [2022-07-22 17:09:34,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192821261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:09:34,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:09:34,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:09:34,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660643514] [2022-07-22 17:09:34,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:09:34,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:09:34,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:09:34,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:09:34,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:09:34,627 INFO L87 Difference]: Start difference. First operand 613 states and 974 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 17:09:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:09:39,565 INFO L93 Difference]: Finished difference Result 1349 states and 2194 transitions. [2022-07-22 17:09:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:09:39,566 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-07-22 17:09:39,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:09:39,569 INFO L225 Difference]: With dead ends: 1349 [2022-07-22 17:09:39,569 INFO L226 Difference]: Without dead ends: 813 [2022-07-22 17:09:39,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:09:39,571 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 776 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 4762 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 4931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 4762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:09:39,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 2572 Invalid, 4931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 4762 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-22 17:09:39,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-07-22 17:09:39,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 617. [2022-07-22 17:09:39,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 482 states have (on average 1.5933609958506223) internal successors, (768), 505 states have internal predecessors, (768), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2022-07-22 17:09:39,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 977 transitions. [2022-07-22 17:09:39,633 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 977 transitions. Word has length 72 [2022-07-22 17:09:39,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:09:39,634 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 977 transitions. [2022-07-22 17:09:39,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 17:09:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 977 transitions. [2022-07-22 17:09:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 17:09:39,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:09:39,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:09:39,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:09:39,635 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:09:39,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:09:39,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1782835120, now seen corresponding path program 1 times [2022-07-22 17:09:39,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:09:39,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835591329] [2022-07-22 17:09:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:09:39,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:09:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:09:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:39,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:39,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:09:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:09:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:39,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:39,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:09:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:09:39,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:09:39,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835591329] [2022-07-22 17:09:39,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835591329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:09:39,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:09:39,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:09:39,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22118552] [2022-07-22 17:09:39,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:09:39,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:09:39,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:09:39,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:09:39,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:09:39,936 INFO L87 Difference]: Start difference. First operand 617 states and 977 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, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:09:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:09:43,301 INFO L93 Difference]: Finished difference Result 1387 states and 2233 transitions. [2022-07-22 17:09:43,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:09:43,301 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, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-22 17:09:43,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:09:43,306 INFO L225 Difference]: With dead ends: 1387 [2022-07-22 17:09:43,306 INFO L226 Difference]: Without dead ends: 768 [2022-07-22 17:09:43,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:09:43,309 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 1171 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:09:43,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 1676 Invalid, 2514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 17:09:43,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-07-22 17:09:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 598. [2022-07-22 17:09:43,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 466 states have (on average 1.6008583690987124) internal successors, (746), 487 states have internal predecessors, (746), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-22 17:09:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 951 transitions. [2022-07-22 17:09:43,383 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 951 transitions. Word has length 72 [2022-07-22 17:09:43,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:09:43,383 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 951 transitions. [2022-07-22 17:09:43,384 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, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:09:43,384 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 951 transitions. [2022-07-22 17:09:43,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 17:09:43,385 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:09:43,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:09:43,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:09:43,385 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:09:43,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:09:43,386 INFO L85 PathProgramCache]: Analyzing trace with hash 491970384, now seen corresponding path program 1 times [2022-07-22 17:09:43,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:09:43,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960448084] [2022-07-22 17:09:43,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:09:43,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:09:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:43,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:09:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:43,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:43,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:09:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:43,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:09:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:43,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:43,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:43,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:09:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:09:43,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:09:43,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960448084] [2022-07-22 17:09:43,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960448084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:09:43,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:09:43,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:09:43,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072815085] [2022-07-22 17:09:43,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:09:43,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:09:43,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:09:43,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:09:43,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:09:43,736 INFO L87 Difference]: Start difference. First operand 598 states and 951 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 17:09:48,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:09:48,220 INFO L93 Difference]: Finished difference Result 1322 states and 2148 transitions. [2022-07-22 17:09:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:09:48,221 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-07-22 17:09:48,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:09:48,225 INFO L225 Difference]: With dead ends: 1322 [2022-07-22 17:09:48,225 INFO L226 Difference]: Without dead ends: 789 [2022-07-22 17:09:48,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:09:48,227 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 1222 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 4534 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 4866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 4534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:09:48,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 2540 Invalid, 4866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 4534 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-22 17:09:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-07-22 17:09:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 603. [2022-07-22 17:09:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 471 states have (on average 1.59447983014862) internal successors, (751), 492 states have internal predecessors, (751), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-22 17:09:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 956 transitions. [2022-07-22 17:09:48,286 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 956 transitions. Word has length 73 [2022-07-22 17:09:48,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:09:48,286 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 956 transitions. [2022-07-22 17:09:48,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 17:09:48,286 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 956 transitions. [2022-07-22 17:09:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 17:09:48,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:09:48,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:09:48,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:09:48,288 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:09:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:09:48,288 INFO L85 PathProgramCache]: Analyzing trace with hash -45503069, now seen corresponding path program 1 times [2022-07-22 17:09:48,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:09:48,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921375367] [2022-07-22 17:09:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:09:48,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:09:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:48,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:09:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:48,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:48,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:09:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:48,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:09:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:48,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:48,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:48,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:09:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:09:48,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:09:48,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921375367] [2022-07-22 17:09:48,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921375367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:09:48,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:09:48,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:09:48,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395664368] [2022-07-22 17:09:48,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:09:48,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:09:48,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:09:48,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:09:48,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:09:48,563 INFO L87 Difference]: Start difference. First operand 603 states and 956 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:09:51,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:09:51,766 INFO L93 Difference]: Finished difference Result 1320 states and 2143 transitions. [2022-07-22 17:09:51,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:09:51,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-07-22 17:09:51,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:09:51,770 INFO L225 Difference]: With dead ends: 1320 [2022-07-22 17:09:51,770 INFO L226 Difference]: Without dead ends: 766 [2022-07-22 17:09:51,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:09:51,772 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 1203 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 2149 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:09:51,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 1669 Invalid, 2466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2149 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 17:09:51,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-07-22 17:09:51,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 603. [2022-07-22 17:09:51,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 471 states have (on average 1.585987261146497) internal successors, (747), 492 states have internal predecessors, (747), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-22 17:09:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 952 transitions. [2022-07-22 17:09:51,833 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 952 transitions. Word has length 74 [2022-07-22 17:09:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:09:51,833 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 952 transitions. [2022-07-22 17:09:51,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 17:09:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 952 transitions. [2022-07-22 17:09:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 17:09:51,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:09:51,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:09:51,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 17:09:51,836 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:09:51,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:09:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2003884773, now seen corresponding path program 1 times [2022-07-22 17:09:51,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:09:51,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739522649] [2022-07-22 17:09:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:09:51,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:09:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:51,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:09:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:51,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:09:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:52,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:09:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:52,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:09:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 17:09:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:09:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:09:52,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:09:52,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739522649] [2022-07-22 17:09:52,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739522649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:09:52,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:09:52,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:09:52,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416561470] [2022-07-22 17:09:52,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:09:52,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:09:52,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:09:52,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:09:52,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:09:52,208 INFO L87 Difference]: Start difference. First operand 603 states and 952 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 17:10:00,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:10:00,911 INFO L93 Difference]: Finished difference Result 2150 states and 3583 transitions. [2022-07-22 17:10:00,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:10:00,912 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2022-07-22 17:10:00,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:10:00,922 INFO L225 Difference]: With dead ends: 2150 [2022-07-22 17:10:00,922 INFO L226 Difference]: Without dead ends: 1625 [2022-07-22 17:10:00,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:10:00,925 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 2797 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 5951 mSolverCounterSat, 843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2894 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 6794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 843 IncrementalHoareTripleChecker+Valid, 5951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:10:00,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2894 Valid, 2490 Invalid, 6794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [843 Valid, 5951 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-07-22 17:10:00,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2022-07-22 17:10:01,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1145. [2022-07-22 17:10:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 892 states have (on average 1.6210762331838564) internal successors, (1446), 922 states have internal predecessors, (1446), 204 states have call successors, (204), 47 states have call predecessors, (204), 48 states have return successors, (206), 188 states have call predecessors, (206), 199 states have call successors, (206) [2022-07-22 17:10:01,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1856 transitions. [2022-07-22 17:10:01,053 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1856 transitions. Word has length 74 [2022-07-22 17:10:01,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:10:01,054 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 1856 transitions. [2022-07-22 17:10:01,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 17:10:01,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1856 transitions. [2022-07-22 17:10:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-22 17:10:01,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:10:01,064 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:10:01,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:10:01,065 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:10:01,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:10:01,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1135513053, now seen corresponding path program 1 times [2022-07-22 17:10:01,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:10:01,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600669359] [2022-07-22 17:10:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:10:01,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:10:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:10:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:10:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:10:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 17:10:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:10:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:10:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:10:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:10:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:10:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:10:01,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:10:01,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600669359] [2022-07-22 17:10:01,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600669359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:10:01,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:10:01,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-22 17:10:01,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205815661] [2022-07-22 17:10:01,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:10:01,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 17:10:01,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:10:01,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 17:10:01,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:10:01,719 INFO L87 Difference]: Start difference. First operand 1145 states and 1856 transitions. Second operand has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 10 states have internal predecessors, (85), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 17:10:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:10:22,461 INFO L93 Difference]: Finished difference Result 5589 states and 9446 transitions. [2022-07-22 17:10:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-22 17:10:22,462 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 10 states have internal predecessors, (85), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 128 [2022-07-22 17:10:22,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:10:22,484 INFO L225 Difference]: With dead ends: 5589 [2022-07-22 17:10:22,484 INFO L226 Difference]: Without dead ends: 4522 [2022-07-22 17:10:22,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=498, Invalid=2258, Unknown=0, NotChecked=0, Total=2756 [2022-07-22 17:10:22,492 INFO L413 NwaCegarLoop]: 1922 mSDtfsCounter, 4613 mSDsluCounter, 4588 mSDsCounter, 0 mSdLazyCounter, 17324 mSolverCounterSat, 2579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4625 SdHoareTripleChecker+Valid, 6510 SdHoareTripleChecker+Invalid, 19903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2579 IncrementalHoareTripleChecker+Valid, 17324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:10:22,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4625 Valid, 6510 Invalid, 19903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2579 Valid, 17324 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2022-07-22 17:10:22,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2022-07-22 17:10:22,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 3177. [2022-07-22 17:10:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3177 states, 2442 states have (on average 1.6036036036036037) internal successors, (3916), 2501 states have internal predecessors, (3916), 586 states have call successors, (586), 127 states have call predecessors, (586), 148 states have return successors, (670), 570 states have call predecessors, (670), 581 states have call successors, (670) [2022-07-22 17:10:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 5172 transitions. [2022-07-22 17:10:22,949 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 5172 transitions. Word has length 128 [2022-07-22 17:10:22,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:10:22,950 INFO L495 AbstractCegarLoop]: Abstraction has 3177 states and 5172 transitions. [2022-07-22 17:10:22,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.071428571428571) internal successors, (85), 10 states have internal predecessors, (85), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 17:10:22,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 5172 transitions. [2022-07-22 17:10:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 17:10:22,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:10:22,955 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:10:22,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 17:10:22,955 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:10:22,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:10:22,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1279216089, now seen corresponding path program 1 times [2022-07-22 17:10:22,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:10:22,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104155675] [2022-07-22 17:10:22,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:10:22,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:10:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:10:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:10:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:10:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:10:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:10:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 17:10:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:10:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 17:10:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 17:10:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:10:23,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:10:23,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104155675] [2022-07-22 17:10:23,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104155675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:10:23,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:10:23,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:10:23,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619331968] [2022-07-22 17:10:23,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:10:23,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:10:23,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:10:23,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:10:23,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:10:23,557 INFO L87 Difference]: Start difference. First operand 3177 states and 5172 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:10:28,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:10:28,978 INFO L93 Difference]: Finished difference Result 7339 states and 12458 transitions. [2022-07-22 17:10:28,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:10:28,978 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2022-07-22 17:10:28,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:10:29,000 INFO L225 Difference]: With dead ends: 7339 [2022-07-22 17:10:29,000 INFO L226 Difference]: Without dead ends: 4240 [2022-07-22 17:10:29,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:10:29,018 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 2818 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 3561 mSolverCounterSat, 1066 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2830 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 4627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1066 IncrementalHoareTripleChecker+Valid, 3561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:10:29,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2830 Valid, 2562 Invalid, 4627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1066 Valid, 3561 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-22 17:10:29,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4240 states. [2022-07-22 17:10:29,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4240 to 3209. [2022-07-22 17:10:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3209 states, 2466 states have (on average 1.597729115977291) internal successors, (3940), 2525 states have internal predecessors, (3940), 586 states have call successors, (586), 135 states have call predecessors, (586), 156 states have return successors, (678), 570 states have call predecessors, (678), 581 states have call successors, (678) [2022-07-22 17:10:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3209 states to 3209 states and 5204 transitions. [2022-07-22 17:10:29,538 INFO L78 Accepts]: Start accepts. Automaton has 3209 states and 5204 transitions. Word has length 129 [2022-07-22 17:10:29,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:10:29,538 INFO L495 AbstractCegarLoop]: Abstraction has 3209 states and 5204 transitions. [2022-07-22 17:10:29,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:10:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3209 states and 5204 transitions. [2022-07-22 17:10:29,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-22 17:10:29,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:10:29,544 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:10:29,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 17:10:29,545 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:10:29,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:10:29,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1590102705, now seen corresponding path program 1 times [2022-07-22 17:10:29,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:10:29,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802019906] [2022-07-22 17:10:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:10:29,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:10:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:29,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:10:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:29,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:29,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:10:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:29,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:10:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:29,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:29,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:30,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:10:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:30,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:30,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:30,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:10:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:30,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 17:10:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:30,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:30,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:10:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:10:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:30,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:10:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:10:30,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:10:30,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802019906] [2022-07-22 17:10:30,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802019906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:10:30,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:10:30,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:10:30,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008563502] [2022-07-22 17:10:30,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:10:30,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:10:30,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:10:30,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:10:30,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:10:30,141 INFO L87 Difference]: Start difference. First operand 3209 states and 5204 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:10:36,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:10:36,163 INFO L93 Difference]: Finished difference Result 7411 states and 12510 transitions. [2022-07-22 17:10:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:10:36,164 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2022-07-22 17:10:36,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:10:36,182 INFO L225 Difference]: With dead ends: 7411 [2022-07-22 17:10:36,183 INFO L226 Difference]: Without dead ends: 4280 [2022-07-22 17:10:36,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:10:36,196 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 2340 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 3900 mSolverCounterSat, 896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 4796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 896 IncrementalHoareTripleChecker+Valid, 3900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:10:36,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2352 Valid, 2593 Invalid, 4796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [896 Valid, 3900 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-22 17:10:36,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2022-07-22 17:10:36,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 3249. [2022-07-22 17:10:36,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 2498 states have (on average 1.590072057646117) internal successors, (3972), 2557 states have internal predecessors, (3972), 586 states have call successors, (586), 143 states have call predecessors, (586), 164 states have return successors, (686), 570 states have call predecessors, (686), 581 states have call successors, (686) [2022-07-22 17:10:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 5244 transitions. [2022-07-22 17:10:36,708 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 5244 transitions. Word has length 131 [2022-07-22 17:10:36,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:10:36,709 INFO L495 AbstractCegarLoop]: Abstraction has 3249 states and 5244 transitions. [2022-07-22 17:10:36,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:10:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 5244 transitions. [2022-07-22 17:10:36,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 17:10:36,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:10:36,714 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:10:36,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 17:10:36,715 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:10:36,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:10:36,715 INFO L85 PathProgramCache]: Analyzing trace with hash -364467865, now seen corresponding path program 1 times [2022-07-22 17:10:36,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:10:36,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319386857] [2022-07-22 17:10:36,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:10:36,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:10:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:36,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:10:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:36,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:36,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:10:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:10:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:37,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:37,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:37,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:10:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:37,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:37,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:37,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:10:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:37,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:10:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:37,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:37,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:37,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:10:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:37,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 17:10:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:10:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:10:37,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:10:37,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319386857] [2022-07-22 17:10:37,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319386857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:10:37,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:10:37,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:10:37,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807889277] [2022-07-22 17:10:37,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:10:37,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:10:37,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:10:37,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:10:37,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:10:37,289 INFO L87 Difference]: Start difference. First operand 3249 states and 5244 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:10:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:10:44,054 INFO L93 Difference]: Finished difference Result 7499 states and 12578 transitions. [2022-07-22 17:10:44,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:10:44,056 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2022-07-22 17:10:44,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:10:44,073 INFO L225 Difference]: With dead ends: 7499 [2022-07-22 17:10:44,073 INFO L226 Difference]: Without dead ends: 4328 [2022-07-22 17:10:44,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:10:44,083 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 1891 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 4226 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 4930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 4226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:10:44,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 2783 Invalid, 4930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 4226 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-22 17:10:44,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2022-07-22 17:10:44,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 3297. [2022-07-22 17:10:44,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3297 states, 2538 states have (on average 1.5807722616233255) internal successors, (4012), 2597 states have internal predecessors, (4012), 586 states have call successors, (586), 151 states have call predecessors, (586), 172 states have return successors, (694), 570 states have call predecessors, (694), 581 states have call successors, (694) [2022-07-22 17:10:44,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3297 states to 3297 states and 5292 transitions. [2022-07-22 17:10:44,533 INFO L78 Accepts]: Start accepts. Automaton has 3297 states and 5292 transitions. Word has length 133 [2022-07-22 17:10:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:10:44,533 INFO L495 AbstractCegarLoop]: Abstraction has 3297 states and 5292 transitions. [2022-07-22 17:10:44,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:10:44,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3297 states and 5292 transitions. [2022-07-22 17:10:44,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-22 17:10:44,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:10:44,538 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:10:44,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 17:10:44,539 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:10:44,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:10:44,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1812856041, now seen corresponding path program 1 times [2022-07-22 17:10:44,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:10:44,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333330625] [2022-07-22 17:10:44,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:10:44,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:10:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:44,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:10:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:44,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:44,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:10:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:44,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:10:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:44,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:44,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:10:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:45,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:45,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 17:10:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:45,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:10:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:45,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:45,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:45,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 17:10:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:45,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 17:10:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:45,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:10:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 17:10:45,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:10:45,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333330625] [2022-07-22 17:10:45,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333330625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:10:45,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:10:45,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 17:10:45,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011777222] [2022-07-22 17:10:45,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:10:45,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:10:45,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:10:45,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:10:45,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:10:45,085 INFO L87 Difference]: Start difference. First operand 3297 states and 5292 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:10:51,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:10:51,637 INFO L93 Difference]: Finished difference Result 7603 states and 12662 transitions. [2022-07-22 17:10:51,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:10:51,644 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2022-07-22 17:10:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:10:51,666 INFO L225 Difference]: With dead ends: 7603 [2022-07-22 17:10:51,667 INFO L226 Difference]: Without dead ends: 4384 [2022-07-22 17:10:51,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:10:51,677 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 1892 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 4143 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 4852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 4143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:10:51,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1904 Valid, 2721 Invalid, 4852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [709 Valid, 4143 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-22 17:10:51,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4384 states. [2022-07-22 17:10:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4384 to 3353. [2022-07-22 17:10:52,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 2586 states have (on average 1.5699922660479506) internal successors, (4060), 2645 states have internal predecessors, (4060), 586 states have call successors, (586), 159 states have call predecessors, (586), 180 states have return successors, (702), 570 states have call predecessors, (702), 581 states have call successors, (702) [2022-07-22 17:10:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 5348 transitions. [2022-07-22 17:10:52,054 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 5348 transitions. Word has length 135 [2022-07-22 17:10:52,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:10:52,054 INFO L495 AbstractCegarLoop]: Abstraction has 3353 states and 5348 transitions. [2022-07-22 17:10:52,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-22 17:10:52,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 5348 transitions. [2022-07-22 17:10:52,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-22 17:10:52,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:10:52,059 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:10:52,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 17:10:52,060 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:10:52,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:10:52,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1035162969, now seen corresponding path program 1 times [2022-07-22 17:10:52,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:10:52,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907874486] [2022-07-22 17:10:52,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:10:52,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:10:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:10:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:10:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:10:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:10:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:10:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:10:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:10:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:10:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:10:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-22 17:10:52,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:10:52,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907874486] [2022-07-22 17:10:52,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907874486] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:10:52,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433195566] [2022-07-22 17:10:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:10:52,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:10:52,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:10:52,714 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) [2022-07-22 17:10:52,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:10:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:52,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 1704 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 17:10:52,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:10:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:10:53,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:10:53,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433195566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:10:53,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:10:53,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2022-07-22 17:10:53,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394799968] [2022-07-22 17:10:53,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:10:53,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:10:53,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:10:53,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:10:53,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:10:53,194 INFO L87 Difference]: Start difference. First operand 3353 states and 5348 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 17:10:53,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:10:53,999 INFO L93 Difference]: Finished difference Result 3502 states and 5592 transitions. [2022-07-22 17:10:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:10:53,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 137 [2022-07-22 17:10:54,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:10:54,014 INFO L225 Difference]: With dead ends: 3502 [2022-07-22 17:10:54,014 INFO L226 Difference]: Without dead ends: 3487 [2022-07-22 17:10:54,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:10:54,017 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 909 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:10:54,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 2393 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 17:10:54,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2022-07-22 17:10:54,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 3365. [2022-07-22 17:10:54,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 2598 states have (on average 1.567359507313318) internal successors, (4072), 2657 states have internal predecessors, (4072), 586 states have call successors, (586), 159 states have call predecessors, (586), 180 states have return successors, (702), 570 states have call predecessors, (702), 581 states have call successors, (702) [2022-07-22 17:10:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 5360 transitions. [2022-07-22 17:10:54,479 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 5360 transitions. Word has length 137 [2022-07-22 17:10:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:10:54,480 INFO L495 AbstractCegarLoop]: Abstraction has 3365 states and 5360 transitions. [2022-07-22 17:10:54,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 17:10:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 5360 transitions. [2022-07-22 17:10:54,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-22 17:10:54,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:10:54,485 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:10:54,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 17:10:54,699 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,SelfDestructingSolverStorable23 [2022-07-22 17:10:54,699 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:10:54,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:10:54,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1242522430, now seen corresponding path program 1 times [2022-07-22 17:10:54,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:10:54,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640361872] [2022-07-22 17:10:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:10:54,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:10:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:54,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:10:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:54,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:54,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:10:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:10:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:10:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:10:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:10:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:10:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:10:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:10:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:10:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:10:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:10:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:10:55,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:10:55,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640361872] [2022-07-22 17:10:55,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640361872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:10:55,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:10:55,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 17:10:55,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116745439] [2022-07-22 17:10:55,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:10:55,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 17:10:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:10:55,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 17:10:55,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:10:55,358 INFO L87 Difference]: Start difference. First operand 3365 states and 5360 transitions. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-22 17:11:10,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:11:10,876 INFO L93 Difference]: Finished difference Result 10856 states and 17944 transitions. [2022-07-22 17:11:10,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-07-22 17:11:10,877 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) Word has length 143 [2022-07-22 17:11:10,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:11:10,927 INFO L225 Difference]: With dead ends: 10856 [2022-07-22 17:11:10,927 INFO L226 Difference]: Without dead ends: 10841 [2022-07-22 17:11:10,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1079, Invalid=4773, Unknown=0, NotChecked=0, Total=5852 [2022-07-22 17:11:10,935 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 9114 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 7017 mSolverCounterSat, 3939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9121 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 10956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3939 IncrementalHoareTripleChecker+Valid, 7017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:11:10,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9121 Valid, 3625 Invalid, 10956 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3939 Valid, 7017 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-07-22 17:11:10,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10841 states. [2022-07-22 17:11:11,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10841 to 3655. [2022-07-22 17:11:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2826 states have (on average 1.5449398443029017) internal successors, (4366), 2885 states have internal predecessors, (4366), 618 states have call successors, (618), 191 states have call predecessors, (618), 210 states have return successors, (752), 600 states have call predecessors, (752), 613 states have call successors, (752) [2022-07-22 17:11:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 5736 transitions. [2022-07-22 17:11:11,637 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 5736 transitions. Word has length 143 [2022-07-22 17:11:11,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:11:11,638 INFO L495 AbstractCegarLoop]: Abstraction has 3655 states and 5736 transitions. [2022-07-22 17:11:11,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-22 17:11:11,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 5736 transitions. [2022-07-22 17:11:11,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-22 17:11:11,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:11:11,643 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:11:11,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 17:11:11,644 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:11:11,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:11:11,644 INFO L85 PathProgramCache]: Analyzing trace with hash 119210163, now seen corresponding path program 1 times [2022-07-22 17:11:11,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:11:11,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123415686] [2022-07-22 17:11:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:11,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:11:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:11,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:11:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:11,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:11,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:11:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:11,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:11:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:11:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:11:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:11:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:11:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:11:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:11:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:11:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:11:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 17:11:12,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:11:12,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123415686] [2022-07-22 17:11:12,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123415686] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:11:12,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389778020] [2022-07-22 17:11:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:12,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:11:12,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:11:12,351 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) [2022-07-22 17:11:12,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:11:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:12,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-22 17:11:12,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:11:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 17:11:12,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:11:12,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389778020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:11:12,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:11:12,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2022-07-22 17:11:12,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867813386] [2022-07-22 17:11:12,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:11:12,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:11:12,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:11:12,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:11:12,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2022-07-22 17:11:12,994 INFO L87 Difference]: Start difference. First operand 3655 states and 5736 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 17:11:15,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:11:15,851 INFO L93 Difference]: Finished difference Result 7615 states and 12102 transitions. [2022-07-22 17:11:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:11:15,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 154 [2022-07-22 17:11:15,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:11:15,874 INFO L225 Difference]: With dead ends: 7615 [2022-07-22 17:11:15,874 INFO L226 Difference]: Without dead ends: 4046 [2022-07-22 17:11:15,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-07-22 17:11:15,888 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 2232 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 4668 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 5202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 4668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:11:15,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 3220 Invalid, 5202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 4668 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 17:11:15,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2022-07-22 17:11:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 3835. [2022-07-22 17:11:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3835 states, 2958 states have (on average 1.54158215010142) internal successors, (4560), 3025 states have internal predecessors, (4560), 650 states have call successors, (650), 195 states have call predecessors, (650), 226 states have return successors, (810), 636 states have call predecessors, (810), 645 states have call successors, (810) [2022-07-22 17:11:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3835 states to 3835 states and 6020 transitions. [2022-07-22 17:11:16,571 INFO L78 Accepts]: Start accepts. Automaton has 3835 states and 6020 transitions. Word has length 154 [2022-07-22 17:11:16,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:11:16,572 INFO L495 AbstractCegarLoop]: Abstraction has 3835 states and 6020 transitions. [2022-07-22 17:11:16,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 17:11:16,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3835 states and 6020 transitions. [2022-07-22 17:11:16,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-22 17:11:16,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:11:16,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:11:16,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 17:11:16,803 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,SelfDestructingSolverStorable25 [2022-07-22 17:11:16,803 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:11:16,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:11:16,804 INFO L85 PathProgramCache]: Analyzing trace with hash -68764981, now seen corresponding path program 1 times [2022-07-22 17:11:16,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:11:16,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294918428] [2022-07-22 17:11:16,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:16,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:11:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:11:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:16,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:11:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:11:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:11:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:11:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:11:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:11:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:11:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:11:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:11:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:11:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:11:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 17:11:17,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:11:17,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294918428] [2022-07-22 17:11:17,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294918428] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:11:17,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556730944] [2022-07-22 17:11:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:17,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:11:17,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:11:17,632 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) [2022-07-22 17:11:17,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 17:11:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:17,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 17:11:17,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:11:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:11:17,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:11:17,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556730944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:11:17,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:11:17,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [23] total 26 [2022-07-22 17:11:17,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133681417] [2022-07-22 17:11:17,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:11:17,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:11:17,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:11:17,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:11:17,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2022-07-22 17:11:17,956 INFO L87 Difference]: Start difference. First operand 3835 states and 6020 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-22 17:11:18,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:11:18,638 INFO L93 Difference]: Finished difference Result 4110 states and 6464 transitions. [2022-07-22 17:11:18,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:11:18,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 159 [2022-07-22 17:11:18,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:11:18,653 INFO L225 Difference]: With dead ends: 4110 [2022-07-22 17:11:18,653 INFO L226 Difference]: Without dead ends: 4095 [2022-07-22 17:11:18,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2022-07-22 17:11:18,656 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 71 mSDsluCounter, 2880 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 3864 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:11:18,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 3864 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:11:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4095 states. [2022-07-22 17:11:19,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4095 to 3871. [2022-07-22 17:11:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3871 states, 2994 states have (on average 1.535070140280561) internal successors, (4596), 3061 states have internal predecessors, (4596), 650 states have call successors, (650), 195 states have call predecessors, (650), 226 states have return successors, (810), 636 states have call predecessors, (810), 645 states have call successors, (810) [2022-07-22 17:11:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3871 states to 3871 states and 6056 transitions. [2022-07-22 17:11:19,255 INFO L78 Accepts]: Start accepts. Automaton has 3871 states and 6056 transitions. Word has length 159 [2022-07-22 17:11:19,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:11:19,256 INFO L495 AbstractCegarLoop]: Abstraction has 3871 states and 6056 transitions. [2022-07-22 17:11:19,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-22 17:11:19,256 INFO L276 IsEmpty]: Start isEmpty. Operand 3871 states and 6056 transitions. [2022-07-22 17:11:19,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-22 17:11:19,264 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:11:19,264 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:11:19,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 17:11:19,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:11:19,490 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:11:19,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:11:19,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1721923009, now seen corresponding path program 1 times [2022-07-22 17:11:19,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:11:19,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627213115] [2022-07-22 17:11:19,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:19,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:11:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:11:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:19,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:19,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:11:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:19,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:11:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:19,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:19,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 17:11:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:11:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 17:11:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 17:11:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 17:11:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:11:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 17:11:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:11:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:11:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:11:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:11:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 17:11:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 17:11:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 17:11:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 10 proven. 39 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-22 17:11:20,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:11:20,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627213115] [2022-07-22 17:11:20,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627213115] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:11:20,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112260114] [2022-07-22 17:11:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:11:20,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:11:20,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:11:20,392 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:11:20,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 17:11:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:11:20,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 1882 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 17:11:20,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:11:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 69 proven. 6 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-22 17:11:21,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:11:21,756 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-22 17:11:21,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112260114] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:11:21,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:11:21,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 9, 8] total 38 [2022-07-22 17:11:21,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953144897] [2022-07-22 17:11:21,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:11:21,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-07-22 17:11:21,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:11:21,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-07-22 17:11:21,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1285, Unknown=0, NotChecked=0, Total=1406 [2022-07-22 17:11:21,760 INFO L87 Difference]: Start difference. First operand 3871 states and 6056 transitions. Second operand has 38 states, 38 states have (on average 7.394736842105263) internal successors, (281), 29 states have internal predecessors, (281), 13 states have call successors, (57), 9 states have call predecessors, (57), 18 states have return successors, (57), 18 states have call predecessors, (57), 13 states have call successors, (57)