./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_product22.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 8090ac1e7e8284dad30217492085f9e11f6491349a4adb4aa3c2904a72e0131a --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 05:43:59,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 05:43:59,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 05:43:59,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 05:43:59,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 05:43:59,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 05:43:59,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 05:43:59,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 05:43:59,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 05:43:59,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 05:43:59,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 05:43:59,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 05:43:59,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 05:43:59,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 05:43:59,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 05:43:59,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 05:43:59,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 05:43:59,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 05:43:59,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 05:43:59,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 05:43:59,622 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 05:43:59,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 05:43:59,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 05:43:59,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 05:43:59,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 05:43:59,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 05:43:59,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 05:43:59,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 05:43:59,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 05:43:59,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 05:43:59,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 05:43:59,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 05:43:59,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 05:43:59,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 05:43:59,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 05:43:59,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 05:43:59,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 05:43:59,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 05:43:59,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 05:43:59,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 05:43:59,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 05:43:59,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 05:43:59,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 05:43:59,672 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 05:43:59,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 05:43:59,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 05:43:59,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 05:43:59,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 05:43:59,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 05:43:59,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 05:43:59,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 05:43:59,675 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 05:43:59,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 05:43:59,676 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 05:43:59,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 05:43:59,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 05:43:59,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 05:43:59,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 05:43:59,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 05:43:59,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 05:43:59,678 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 05:43:59,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 05:43:59,678 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 05:43:59,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 05:43:59,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 05:43:59,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 05:43:59,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 05:43:59,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:43:59,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 05:43:59,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 05:43:59,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 05:43:59,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 05:43:59,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 05:43:59,687 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 05:43:59,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 05:43:59,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 05:43:59,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8090ac1e7e8284dad30217492085f9e11f6491349a4adb4aa3c2904a72e0131a [2022-07-12 05:43:59,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 05:43:59,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 05:43:59,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 05:43:59,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 05:43:59,958 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 05:43:59,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c [2022-07-12 05:44:00,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0070143/a34825a539de404090615f0b324b9254/FLAGc60e9c609 [2022-07-12 05:44:00,538 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 05:44:00,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c [2022-07-12 05:44:00,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0070143/a34825a539de404090615f0b324b9254/FLAGc60e9c609 [2022-07-12 05:44:00,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0070143/a34825a539de404090615f0b324b9254 [2022-07-12 05:44:00,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 05:44:00,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 05:44:00,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 05:44:00,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 05:44:00,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 05:44:00,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:44:00" (1/1) ... [2022-07-12 05:44:00,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d116778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:44:00, skipping insertion in model container [2022-07-12 05:44:00,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:44:00" (1/1) ... [2022-07-12 05:44:00,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 05:44:01,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 05:44:01,162 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_product22.cil.c[1545,1558] [2022-07-12 05:44:01,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:44:01,485 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 05:44:01,495 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_product22.cil.c[1545,1558] [2022-07-12 05:44:01,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:44:01,622 INFO L208 MainTranslator]: Completed translation [2022-07-12 05:44:01,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:44:01 WrapperNode [2022-07-12 05:44:01,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 05:44:01,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 05:44:01,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 05:44:01,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 05:44:01,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:44:01" (1/1) ... [2022-07-12 05:44:01,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:44:01" (1/1) ... [2022-07-12 05:44:01,727 INFO L137 Inliner]: procedures = 94, calls = 345, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 876 [2022-07-12 05:44:01,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 05:44:01,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 05:44:01,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 05:44:01,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 05:44:01,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:44:01" (1/1) ... [2022-07-12 05:44:01,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:44:01" (1/1) ... [2022-07-12 05:44:01,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:44:01" (1/1) ... [2022-07-12 05:44:01,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:44:01" (1/1) ... [2022-07-12 05:44:01,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:44:01" (1/1) ... [2022-07-12 05:44:01,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:44:01" (1/1) ... [2022-07-12 05:44:01,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:44:01" (1/1) ... [2022-07-12 05:44:01,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 05:44:01,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 05:44:01,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 05:44:01,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 05:44:01,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:44:01" (1/1) ... [2022-07-12 05:44:01,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:44:01,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:44:01,820 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) [2022-07-12 05:44:01,833 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 [2022-07-12 05:44:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 05:44:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-12 05:44:01,859 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-12 05:44:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-12 05:44:01,860 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-12 05:44:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-12 05:44:01,860 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-12 05:44:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-12 05:44:01,863 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-12 05:44:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-12 05:44:01,863 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-12 05:44:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-12 05:44:01,863 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-12 05:44:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-12 05:44:01,864 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-12 05:44:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-12 05:44:01,864 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-12 05:44:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-12 05:44:01,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-12 05:44:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-12 05:44:01,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-12 05:44:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-12 05:44:01,865 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-12 05:44:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-12 05:44:01,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-12 05:44:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-12 05:44:01,865 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-12 05:44:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-12 05:44:01,866 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-12 05:44:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-12 05:44:01,866 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-12 05:44:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-12 05:44:01,866 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-12 05:44:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-12 05:44:01,867 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-12 05:44:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-12 05:44:01,867 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-12 05:44:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 05:44:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-12 05:44:01,867 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-12 05:44:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-12 05:44:01,868 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-12 05:44:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-12 05:44:01,868 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-12 05:44:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-12 05:44:01,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-12 05:44:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-07-12 05:44:01,869 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-07-12 05:44:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-07-12 05:44:01,869 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-07-12 05:44:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 05:44:01,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 05:44:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-12 05:44:01,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-12 05:44:02,045 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 05:44:02,046 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 05:44:02,972 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 05:44:02,981 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 05:44:02,982 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 05:44:02,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:44:02 BoogieIcfgContainer [2022-07-12 05:44:02,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 05:44:02,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 05:44:02,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 05:44:02,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 05:44:02,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 05:44:00" (1/3) ... [2022-07-12 05:44:02,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1252848d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:44:02, skipping insertion in model container [2022-07-12 05:44:02,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:44:01" (2/3) ... [2022-07-12 05:44:02,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1252848d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:44:02, skipping insertion in model container [2022-07-12 05:44:02,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:44:02" (3/3) ... [2022-07-12 05:44:02,992 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product22.cil.c [2022-07-12 05:44:03,003 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 05:44:03,004 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 05:44:03,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 05:44:03,078 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@24c9aa97, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6e2d260e [2022-07-12 05:44:03,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 05:44:03,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 572 states, 447 states have (on average 1.691275167785235) internal successors, (756), 470 states have internal predecessors, (756), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-12 05:44:03,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-12 05:44:03,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:03,101 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] [2022-07-12 05:44:03,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:03,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:03,106 INFO L85 PathProgramCache]: Analyzing trace with hash -992084887, now seen corresponding path program 1 times [2022-07-12 05:44:03,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:03,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90698204] [2022-07-12 05:44:03,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:03,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:03,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:03,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:03,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:44:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:03,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 05:44:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:03,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:03,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:03,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:44:03,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:03,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90698204] [2022-07-12 05:44:03,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90698204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:03,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:03,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:44:03,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068148186] [2022-07-12 05:44:03,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:03,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:44:03,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:03,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:44:03,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:44:03,838 INFO L87 Difference]: Start difference. First operand has 572 states, 447 states have (on average 1.691275167785235) internal successors, (756), 470 states have internal predecessors, (756), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) 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) [2022-07-12 05:44:08,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:08,363 INFO L93 Difference]: Finished difference Result 1287 states and 2173 transitions. [2022-07-12 05:44:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:44:08,372 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 [2022-07-12 05:44:08,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:08,403 INFO L225 Difference]: With dead ends: 1287 [2022-07-12 05:44:08,404 INFO L226 Difference]: Without dead ends: 727 [2022-07-12 05:44:08,414 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 [2022-07-12 05:44:08,418 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 1140 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:08,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 1726 Invalid, 2458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [294 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-12 05:44:08,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-07-12 05:44:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 564. [2022-07-12 05:44:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6870748299319729) internal successors, (744), 462 states have internal predecessors, (744), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-12 05:44:08,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 935 transitions. [2022-07-12 05:44:08,551 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 935 transitions. Word has length 60 [2022-07-12 05:44:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:08,551 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 935 transitions. [2022-07-12 05:44:08,552 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) [2022-07-12 05:44:08,552 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 935 transitions. [2022-07-12 05:44:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 05:44:08,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:08,557 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] [2022-07-12 05:44:08,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 05:44:08,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:08,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:08,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1651182718, now seen corresponding path program 1 times [2022-07-12 05:44:08,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:08,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149479613] [2022-07-12 05:44:08,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:08,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:08,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:08,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:08,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 05:44:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:08,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:09,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:09,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:44:09,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:09,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149479613] [2022-07-12 05:44:09,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149479613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:09,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:09,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:44:09,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107214278] [2022-07-12 05:44:09,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:09,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:44:09,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:09,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:44:09,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:44:09,035 INFO L87 Difference]: Start difference. First operand 564 states and 935 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) [2022-07-12 05:44:13,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:13,035 INFO L93 Difference]: Finished difference Result 1273 states and 2139 transitions. [2022-07-12 05:44:13,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:44:13,036 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 [2022-07-12 05:44:13,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:13,042 INFO L225 Difference]: With dead ends: 1273 [2022-07-12 05:44:13,042 INFO L226 Difference]: Without dead ends: 727 [2022-07-12 05:44:13,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:44:13,047 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 1138 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:13,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 1685 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 2162 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-12 05:44:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-07-12 05:44:13,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 564. [2022-07-12 05:44:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6848072562358276) internal successors, (743), 462 states have internal predecessors, (743), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-12 05:44:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 934 transitions. [2022-07-12 05:44:13,103 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 934 transitions. Word has length 63 [2022-07-12 05:44:13,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:13,104 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 934 transitions. [2022-07-12 05:44:13,105 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) [2022-07-12 05:44:13,105 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 934 transitions. [2022-07-12 05:44:13,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 05:44:13,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:13,109 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] [2022-07-12 05:44:13,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 05:44:13,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:13,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:13,110 INFO L85 PathProgramCache]: Analyzing trace with hash 722898553, now seen corresponding path program 1 times [2022-07-12 05:44:13,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:13,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847607822] [2022-07-12 05:44:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:13,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:13,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:13,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:13,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:13,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 05:44:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:13,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:13,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:13,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:44:13,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:13,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847607822] [2022-07-12 05:44:13,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847607822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:13,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:13,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:44:13,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783671599] [2022-07-12 05:44:13,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:13,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:44:13,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:13,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:44:13,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:44:13,465 INFO L87 Difference]: Start difference. First operand 564 states and 934 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) [2022-07-12 05:44:17,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:17,497 INFO L93 Difference]: Finished difference Result 1273 states and 2138 transitions. [2022-07-12 05:44:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:44:17,498 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 [2022-07-12 05:44:17,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:17,503 INFO L225 Difference]: With dead ends: 1273 [2022-07-12 05:44:17,503 INFO L226 Difference]: Without dead ends: 727 [2022-07-12 05:44:17,506 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 [2022-07-12 05:44:17,507 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 680 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:17,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1683 Invalid, 2489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-12 05:44:17,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-07-12 05:44:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 564. [2022-07-12 05:44:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6825396825396826) internal successors, (742), 462 states have internal predecessors, (742), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-12 05:44:17,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 933 transitions. [2022-07-12 05:44:17,580 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 933 transitions. Word has length 64 [2022-07-12 05:44:17,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:17,581 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 933 transitions. [2022-07-12 05:44:17,581 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) [2022-07-12 05:44:17,581 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 933 transitions. [2022-07-12 05:44:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 05:44:17,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:17,583 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] [2022-07-12 05:44:17,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 05:44:17,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:17,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:17,587 INFO L85 PathProgramCache]: Analyzing trace with hash 342813406, now seen corresponding path program 1 times [2022-07-12 05:44:17,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:17,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343927184] [2022-07-12 05:44:17,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:17,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:17,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:17,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:17,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 05:44:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:17,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 05:44:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:17,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:17,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:17,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:44:17,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:17,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343927184] [2022-07-12 05:44:17,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343927184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:17,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:17,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:44:17,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814927155] [2022-07-12 05:44:17,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:17,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:44:17,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:17,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:44:17,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:44:17,918 INFO L87 Difference]: Start difference. First operand 564 states and 933 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) [2022-07-12 05:44:21,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:21,358 INFO L93 Difference]: Finished difference Result 1273 states and 2137 transitions. [2022-07-12 05:44:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:44:21,358 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 [2022-07-12 05:44:21,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:21,366 INFO L225 Difference]: With dead ends: 1273 [2022-07-12 05:44:21,367 INFO L226 Difference]: Without dead ends: 727 [2022-07-12 05:44:21,369 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 [2022-07-12 05:44:21,379 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1133 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:21,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 1674 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-12 05:44:21,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-07-12 05:44:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 564. [2022-07-12 05:44:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6802721088435375) internal successors, (741), 462 states have internal predecessors, (741), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-12 05:44:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 932 transitions. [2022-07-12 05:44:21,434 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 932 transitions. Word has length 65 [2022-07-12 05:44:21,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:21,436 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 932 transitions. [2022-07-12 05:44:21,436 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) [2022-07-12 05:44:21,436 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 932 transitions. [2022-07-12 05:44:21,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 05:44:21,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:21,438 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] [2022-07-12 05:44:21,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 05:44:21,439 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:21,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:21,439 INFO L85 PathProgramCache]: Analyzing trace with hash 482915221, now seen corresponding path program 1 times [2022-07-12 05:44:21,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:21,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600153796] [2022-07-12 05:44:21,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:21,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:21,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:21,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:21,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 05:44:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:21,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 05:44:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:21,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:21,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:21,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:21,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:44:21,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:21,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600153796] [2022-07-12 05:44:21,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600153796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:21,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:21,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:44:21,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919651690] [2022-07-12 05:44:21,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:21,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:44:21,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:21,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:44:21,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:44:21,769 INFO L87 Difference]: Start difference. First operand 564 states and 932 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) [2022-07-12 05:44:25,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:25,495 INFO L93 Difference]: Finished difference Result 1273 states and 2136 transitions. [2022-07-12 05:44:25,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:44:25,496 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 [2022-07-12 05:44:25,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:25,501 INFO L225 Difference]: With dead ends: 1273 [2022-07-12 05:44:25,501 INFO L226 Difference]: Without dead ends: 727 [2022-07-12 05:44:25,504 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 [2022-07-12 05:44:25,504 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 674 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:25,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1708 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-12 05:44:25,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-07-12 05:44:25,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 564. [2022-07-12 05:44:25,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6780045351473922) internal successors, (740), 462 states have internal predecessors, (740), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-12 05:44:25,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 931 transitions. [2022-07-12 05:44:25,550 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 931 transitions. Word has length 66 [2022-07-12 05:44:25,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:25,550 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 931 transitions. [2022-07-12 05:44:25,551 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) [2022-07-12 05:44:25,551 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 931 transitions. [2022-07-12 05:44:25,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 05:44:25,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:25,552 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] [2022-07-12 05:44:25,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 05:44:25,553 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:25,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:25,553 INFO L85 PathProgramCache]: Analyzing trace with hash -431056326, now seen corresponding path program 1 times [2022-07-12 05:44:25,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:25,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986203674] [2022-07-12 05:44:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:25,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:25,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:25,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:25,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:25,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:44:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:25,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:25,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:44:25,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:25,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986203674] [2022-07-12 05:44:25,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986203674] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:25,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:25,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:44:25,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408504139] [2022-07-12 05:44:25,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:25,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:44:25,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:44:25,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:44:25,905 INFO L87 Difference]: Start difference. First operand 564 states and 931 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (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) [2022-07-12 05:44:30,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:30,613 INFO L93 Difference]: Finished difference Result 1250 states and 2086 transitions. [2022-07-12 05:44:30,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:44:30,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (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 [2022-07-12 05:44:30,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:30,619 INFO L225 Difference]: With dead ends: 1250 [2022-07-12 05:44:30,619 INFO L226 Difference]: Without dead ends: 753 [2022-07-12 05:44:30,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:44:30,623 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 1239 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 4465 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 4770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 4465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:30,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 2612 Invalid, 4770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 4465 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-12 05:44:30,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-07-12 05:44:30,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 577. [2022-07-12 05:44:30,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 451 states have (on average 1.6740576496674058) internal successors, (755), 474 states have internal predecessors, (755), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-12 05:44:30,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 950 transitions. [2022-07-12 05:44:30,688 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 950 transitions. Word has length 67 [2022-07-12 05:44:30,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:30,689 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 950 transitions. [2022-07-12 05:44:30,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (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) [2022-07-12 05:44:30,689 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 950 transitions. [2022-07-12 05:44:30,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 05:44:30,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:30,691 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] [2022-07-12 05:44:30,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 05:44:30,691 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:30,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:30,692 INFO L85 PathProgramCache]: Analyzing trace with hash -671596455, now seen corresponding path program 1 times [2022-07-12 05:44:30,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:30,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243308409] [2022-07-12 05:44:30,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:30,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:30,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:30,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:30,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 05:44:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:30,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:30,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:31,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:44:31,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:31,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243308409] [2022-07-12 05:44:31,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243308409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:31,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:31,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:44:31,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266401397] [2022-07-12 05:44:31,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:31,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:44:31,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:31,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:44:31,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:44:31,004 INFO L87 Difference]: Start difference. First operand 577 states and 950 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) [2022-07-12 05:44:34,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:34,131 INFO L93 Difference]: Finished difference Result 1264 states and 2109 transitions. [2022-07-12 05:44:34,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:44:34,132 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 [2022-07-12 05:44:34,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:34,135 INFO L225 Difference]: With dead ends: 1264 [2022-07-12 05:44:34,136 INFO L226 Difference]: Without dead ends: 749 [2022-07-12 05:44:34,138 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 [2022-07-12 05:44:34,139 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 1191 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:34,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 1612 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 05:44:34,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-07-12 05:44:34,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 577. [2022-07-12 05:44:34,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 451 states have (on average 1.6629711751662972) internal successors, (750), 474 states have internal predecessors, (750), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-12 05:44:34,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 945 transitions. [2022-07-12 05:44:34,191 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 945 transitions. Word has length 67 [2022-07-12 05:44:34,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:34,191 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 945 transitions. [2022-07-12 05:44:34,191 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) [2022-07-12 05:44:34,192 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 945 transitions. [2022-07-12 05:44:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 05:44:34,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:34,193 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] [2022-07-12 05:44:34,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 05:44:34,194 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:34,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:34,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1455824306, now seen corresponding path program 1 times [2022-07-12 05:44:34,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:34,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595593089] [2022-07-12 05:44:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:34,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:34,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:34,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:34,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:34,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 05:44:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:34,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:34,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:34,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:44:34,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:34,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595593089] [2022-07-12 05:44:34,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595593089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:34,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:34,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:44:34,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105039574] [2022-07-12 05:44:34,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:34,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:44:34,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:34,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:44:34,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:44:34,527 INFO L87 Difference]: Start difference. First operand 577 states and 945 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) [2022-07-12 05:44:38,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:38,113 INFO L93 Difference]: Finished difference Result 1264 states and 2104 transitions. [2022-07-12 05:44:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:44:38,115 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 [2022-07-12 05:44:38,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:38,121 INFO L225 Difference]: With dead ends: 1264 [2022-07-12 05:44:38,121 INFO L226 Difference]: Without dead ends: 749 [2022-07-12 05:44:38,123 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 [2022-07-12 05:44:38,124 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 739 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 2467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:38,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1627 Invalid, 2467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-12 05:44:38,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-07-12 05:44:38,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 577. [2022-07-12 05:44:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 451 states have (on average 1.6518847006651884) internal successors, (745), 474 states have internal predecessors, (745), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-12 05:44:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 940 transitions. [2022-07-12 05:44:38,176 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 940 transitions. Word has length 68 [2022-07-12 05:44:38,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:38,176 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 940 transitions. [2022-07-12 05:44:38,177 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) [2022-07-12 05:44:38,177 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 940 transitions. [2022-07-12 05:44:38,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 05:44:38,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:38,180 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] [2022-07-12 05:44:38,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 05:44:38,181 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:38,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:38,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2054400190, now seen corresponding path program 1 times [2022-07-12 05:44:38,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:38,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302204735] [2022-07-12 05:44:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:38,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:38,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:38,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:38,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:38,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 05:44:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:38,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:38,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:38,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:44:38,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:38,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302204735] [2022-07-12 05:44:38,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302204735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:38,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:38,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:44:38,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028019857] [2022-07-12 05:44:38,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:38,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:44:38,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:38,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:44:38,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:44:38,517 INFO L87 Difference]: Start difference. First operand 577 states and 940 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) [2022-07-12 05:44:42,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:42,013 INFO L93 Difference]: Finished difference Result 1264 states and 2099 transitions. [2022-07-12 05:44:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:44:42,014 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 [2022-07-12 05:44:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:42,024 INFO L225 Difference]: With dead ends: 1264 [2022-07-12 05:44:42,025 INFO L226 Difference]: Without dead ends: 749 [2022-07-12 05:44:42,026 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 [2022-07-12 05:44:42,027 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 738 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:42,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 1626 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 05:44:42,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-07-12 05:44:42,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 577. [2022-07-12 05:44:42,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 451 states have (on average 1.6407982261640799) internal successors, (740), 474 states have internal predecessors, (740), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-12 05:44:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 935 transitions. [2022-07-12 05:44:42,080 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 935 transitions. Word has length 69 [2022-07-12 05:44:42,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:42,080 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 935 transitions. [2022-07-12 05:44:42,080 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) [2022-07-12 05:44:42,081 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 935 transitions. [2022-07-12 05:44:42,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 05:44:42,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:42,082 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] [2022-07-12 05:44:42,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 05:44:42,083 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:42,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:42,083 INFO L85 PathProgramCache]: Analyzing trace with hash -171355341, now seen corresponding path program 1 times [2022-07-12 05:44:42,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:42,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402622446] [2022-07-12 05:44:42,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:42,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:42,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:42,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:42,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:42,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:44:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:42,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:42,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:42,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:44:42,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:42,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402622446] [2022-07-12 05:44:42,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402622446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:42,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:42,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:44:42,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970214900] [2022-07-12 05:44:42,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:42,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:44:42,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:42,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:44:42,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:44:42,400 INFO L87 Difference]: Start difference. First operand 577 states and 935 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) [2022-07-12 05:44:46,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:46,818 INFO L93 Difference]: Finished difference Result 1256 states and 2076 transitions. [2022-07-12 05:44:46,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:44:46,819 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 [2022-07-12 05:44:46,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:46,823 INFO L225 Difference]: With dead ends: 1256 [2022-07-12 05:44:46,823 INFO L226 Difference]: Without dead ends: 756 [2022-07-12 05:44:46,825 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 [2022-07-12 05:44:46,826 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 1201 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 4445 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 4752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 4445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:46,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1286 Valid, 2606 Invalid, 4752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 4445 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-12 05:44:46,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-07-12 05:44:46,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 577. [2022-07-12 05:44:46,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 451 states have (on average 1.6385809312638582) internal successors, (739), 474 states have internal predecessors, (739), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-12 05:44:46,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 934 transitions. [2022-07-12 05:44:46,891 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 934 transitions. Word has length 70 [2022-07-12 05:44:46,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:46,891 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 934 transitions. [2022-07-12 05:44:46,891 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) [2022-07-12 05:44:46,891 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 934 transitions. [2022-07-12 05:44:46,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 05:44:46,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:46,893 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] [2022-07-12 05:44:46,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 05:44:46,893 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:46,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:46,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1253693971, now seen corresponding path program 1 times [2022-07-12 05:44:46,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:46,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376823375] [2022-07-12 05:44:46,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:46,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:46,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:46,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:46,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:47,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 05:44:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:47,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:47,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:44:47,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:47,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376823375] [2022-07-12 05:44:47,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376823375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:47,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:47,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:44:47,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408510152] [2022-07-12 05:44:47,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:47,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:44:47,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:47,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:44:47,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:44:47,198 INFO L87 Difference]: Start difference. First operand 577 states and 934 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) [2022-07-12 05:44:50,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:50,208 INFO L93 Difference]: Finished difference Result 1264 states and 2091 transitions. [2022-07-12 05:44:50,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:44:50,209 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 [2022-07-12 05:44:50,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:50,212 INFO L225 Difference]: With dead ends: 1264 [2022-07-12 05:44:50,213 INFO L226 Difference]: Without dead ends: 749 [2022-07-12 05:44:50,214 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 [2022-07-12 05:44:50,215 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 1200 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:50,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 1597 Invalid, 2402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-12 05:44:50,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-07-12 05:44:50,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 577. [2022-07-12 05:44:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 451 states have (on average 1.6274944567627494) internal successors, (734), 474 states have internal predecessors, (734), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-12 05:44:50,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 929 transitions. [2022-07-12 05:44:50,270 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 929 transitions. Word has length 70 [2022-07-12 05:44:50,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:50,271 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 929 transitions. [2022-07-12 05:44:50,271 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) [2022-07-12 05:44:50,271 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 929 transitions. [2022-07-12 05:44:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 05:44:50,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:50,273 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] [2022-07-12 05:44:50,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 05:44:50,273 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:50,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:50,274 INFO L85 PathProgramCache]: Analyzing trace with hash -964545663, now seen corresponding path program 1 times [2022-07-12 05:44:50,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:50,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790564461] [2022-07-12 05:44:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:50,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:50,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:50,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:50,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:50,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 05:44:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:50,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:50,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:50,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:44:50,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:50,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790564461] [2022-07-12 05:44:50,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790564461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:50,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:50,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:44:50,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947903268] [2022-07-12 05:44:50,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:50,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:44:50,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:50,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:44:50,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:44:50,590 INFO L87 Difference]: Start difference. First operand 577 states and 929 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) [2022-07-12 05:44:55,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:55,077 INFO L93 Difference]: Finished difference Result 1277 states and 2101 transitions. [2022-07-12 05:44:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:44:55,078 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 [2022-07-12 05:44:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:55,081 INFO L225 Difference]: With dead ends: 1277 [2022-07-12 05:44:55,081 INFO L226 Difference]: Without dead ends: 774 [2022-07-12 05:44:55,083 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 [2022-07-12 05:44:55,084 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 1208 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 4364 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 4678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 4364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:55,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 2571 Invalid, 4678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 4364 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-12 05:44:55,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-07-12 05:44:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 580. [2022-07-12 05:44:55,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 454 states have (on average 1.6211453744493391) internal successors, (736), 477 states have internal predecessors, (736), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-12 05:44:55,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 931 transitions. [2022-07-12 05:44:55,140 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 931 transitions. Word has length 71 [2022-07-12 05:44:55,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:55,140 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 931 transitions. [2022-07-12 05:44:55,140 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) [2022-07-12 05:44:55,140 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 931 transitions. [2022-07-12 05:44:55,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 05:44:55,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:55,142 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] [2022-07-12 05:44:55,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 05:44:55,142 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:55,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:55,143 INFO L85 PathProgramCache]: Analyzing trace with hash -41878237, now seen corresponding path program 1 times [2022-07-12 05:44:55,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:55,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593812533] [2022-07-12 05:44:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:55,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:55,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:55,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:55,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:55,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 05:44:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:55,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:55,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:55,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:44:55,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:55,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593812533] [2022-07-12 05:44:55,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593812533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:55,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:55,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:44:55,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036820774] [2022-07-12 05:44:55,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:55,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:44:55,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:55,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:44:55,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:44:55,467 INFO L87 Difference]: Start difference. First operand 580 states and 931 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) [2022-07-12 05:44:58,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:44:58,668 INFO L93 Difference]: Finished difference Result 1273 states and 2092 transitions. [2022-07-12 05:44:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:44:58,669 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 [2022-07-12 05:44:58,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:44:58,673 INFO L225 Difference]: With dead ends: 1273 [2022-07-12 05:44:58,673 INFO L226 Difference]: Without dead ends: 755 [2022-07-12 05:44:58,675 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 [2022-07-12 05:44:58,675 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 1194 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:44:58,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 1615 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 05:44:58,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-07-12 05:44:58,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 580. [2022-07-12 05:44:58,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 454 states have (on average 1.6101321585903083) internal successors, (731), 477 states have internal predecessors, (731), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-12 05:44:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 926 transitions. [2022-07-12 05:44:58,754 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 926 transitions. Word has length 71 [2022-07-12 05:44:58,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:44:58,755 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 926 transitions. [2022-07-12 05:44:58,756 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) [2022-07-12 05:44:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 926 transitions. [2022-07-12 05:44:58,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 05:44:58,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:44:58,757 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] [2022-07-12 05:44:58,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 05:44:58,758 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:44:58,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:44:58,758 INFO L85 PathProgramCache]: Analyzing trace with hash -872008712, now seen corresponding path program 1 times [2022-07-12 05:44:58,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:44:58,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126246117] [2022-07-12 05:44:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:44:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:44:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:58,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:44:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:58,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:58,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:44:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:59,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:44:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:59,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:59,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:44:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:59,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:44:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:44:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:44:59,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:44:59,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126246117] [2022-07-12 05:44:59,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126246117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:44:59,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:44:59,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:44:59,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675217458] [2022-07-12 05:44:59,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:44:59,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:44:59,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:44:59,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:44:59,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:44:59,060 INFO L87 Difference]: Start difference. First operand 580 states and 926 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) [2022-07-12 05:45:03,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:03,573 INFO L93 Difference]: Finished difference Result 1283 states and 2098 transitions. [2022-07-12 05:45:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:45:03,573 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 [2022-07-12 05:45:03,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:03,577 INFO L225 Difference]: With dead ends: 1283 [2022-07-12 05:45:03,577 INFO L226 Difference]: Without dead ends: 780 [2022-07-12 05:45:03,579 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 [2022-07-12 05:45:03,580 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 1197 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 4347 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 4655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 4347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:03,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 2601 Invalid, 4655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 4347 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-12 05:45:03,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-07-12 05:45:03,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 584. [2022-07-12 05:45:03,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 458 states have (on average 1.6026200873362446) internal successors, (734), 481 states have internal predecessors, (734), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-12 05:45:03,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 929 transitions. [2022-07-12 05:45:03,637 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 929 transitions. Word has length 72 [2022-07-12 05:45:03,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:03,637 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 929 transitions. [2022-07-12 05:45:03,638 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) [2022-07-12 05:45:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 929 transitions. [2022-07-12 05:45:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 05:45:03,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:03,639 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] [2022-07-12 05:45:03,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 05:45:03,640 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:03,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:03,640 INFO L85 PathProgramCache]: Analyzing trace with hash 501573080, now seen corresponding path program 1 times [2022-07-12 05:45:03,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:03,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799238294] [2022-07-12 05:45:03,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:03,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:03,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:03,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:03,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:03,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 05:45:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:03,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:03,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:03,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:45:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:45:03,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:03,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799238294] [2022-07-12 05:45:03,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799238294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:03,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:45:03,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:45:03,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953596447] [2022-07-12 05:45:03,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:03,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:45:03,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:03,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:45:03,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:45:03,984 INFO L87 Difference]: Start difference. First operand 584 states and 929 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) [2022-07-12 05:45:07,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:07,641 INFO L93 Difference]: Finished difference Result 1321 states and 2137 transitions. [2022-07-12 05:45:07,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:45:07,645 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 [2022-07-12 05:45:07,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:07,648 INFO L225 Difference]: With dead ends: 1321 [2022-07-12 05:45:07,648 INFO L226 Difference]: Without dead ends: 735 [2022-07-12 05:45:07,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:45:07,650 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 669 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 2381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:07,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1636 Invalid, 2381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 05:45:07,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-07-12 05:45:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 565. [2022-07-12 05:45:07,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6108597285067874) internal successors, (712), 463 states have internal predecessors, (712), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-12 05:45:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 903 transitions. [2022-07-12 05:45:07,699 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 903 transitions. Word has length 72 [2022-07-12 05:45:07,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:07,699 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 903 transitions. [2022-07-12 05:45:07,699 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) [2022-07-12 05:45:07,699 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 903 transitions. [2022-07-12 05:45:07,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 05:45:07,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:07,700 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] [2022-07-12 05:45:07,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 05:45:07,701 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:07,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:07,701 INFO L85 PathProgramCache]: Analyzing trace with hash 908269926, now seen corresponding path program 1 times [2022-07-12 05:45:07,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:07,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156234877] [2022-07-12 05:45:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:07,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:07,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:07,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:07,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:07,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 05:45:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:08,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:45:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:45:08,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:08,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156234877] [2022-07-12 05:45:08,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156234877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:08,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:45:08,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:45:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748850729] [2022-07-12 05:45:08,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:08,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:45:08,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:08,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:45:08,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:45:08,030 INFO L87 Difference]: Start difference. First operand 565 states and 903 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) [2022-07-12 05:45:12,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:12,850 INFO L93 Difference]: Finished difference Result 1256 states and 2052 transitions. [2022-07-12 05:45:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:45:12,851 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 [2022-07-12 05:45:12,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:12,854 INFO L225 Difference]: With dead ends: 1256 [2022-07-12 05:45:12,854 INFO L226 Difference]: Without dead ends: 756 [2022-07-12 05:45:12,855 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 [2022-07-12 05:45:12,856 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 718 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 4429 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 4583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 4429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:12,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 2519 Invalid, 4583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 4429 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-12 05:45:12,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-07-12 05:45:12,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 570. [2022-07-12 05:45:12,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 447 states have (on average 1.604026845637584) internal successors, (717), 468 states have internal predecessors, (717), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-12 05:45:12,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 908 transitions. [2022-07-12 05:45:12,914 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 908 transitions. Word has length 73 [2022-07-12 05:45:12,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:12,915 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 908 transitions. [2022-07-12 05:45:12,915 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) [2022-07-12 05:45:12,915 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 908 transitions. [2022-07-12 05:45:12,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 05:45:12,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:12,917 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] [2022-07-12 05:45:12,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 05:45:12,917 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:12,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:12,917 INFO L85 PathProgramCache]: Analyzing trace with hash -789981491, now seen corresponding path program 1 times [2022-07-12 05:45:12,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:12,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337507970] [2022-07-12 05:45:12,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:12,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:13,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:13,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:45:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:13,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:13,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:45:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:45:13,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:13,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337507970] [2022-07-12 05:45:13,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337507970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:13,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:45:13,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:45:13,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487407261] [2022-07-12 05:45:13,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:13,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:45:13,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:13,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:45:13,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:45:13,324 INFO L87 Difference]: Start difference. First operand 570 states and 908 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) [2022-07-12 05:45:20,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:20,789 INFO L93 Difference]: Finished difference Result 2072 states and 3474 transitions. [2022-07-12 05:45:20,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:45:20,789 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 [2022-07-12 05:45:20,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:20,799 INFO L225 Difference]: With dead ends: 2072 [2022-07-12 05:45:20,799 INFO L226 Difference]: Without dead ends: 1580 [2022-07-12 05:45:20,801 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 [2022-07-12 05:45:20,802 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 4370 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 5396 mSolverCounterSat, 1309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4460 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 6705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1309 IncrementalHoareTripleChecker+Valid, 5396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:20,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4460 Valid, 2477 Invalid, 6705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1309 Valid, 5396 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-07-12 05:45:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2022-07-12 05:45:20,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1088. [2022-07-12 05:45:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 853 states have (on average 1.6389214536928487) internal successors, (1398), 883 states have internal predecessors, (1398), 190 states have call successors, (190), 43 states have call predecessors, (190), 44 states have return successors, (192), 174 states have call predecessors, (192), 185 states have call successors, (192) [2022-07-12 05:45:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1780 transitions. [2022-07-12 05:45:20,923 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1780 transitions. Word has length 74 [2022-07-12 05:45:20,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:20,924 INFO L495 AbstractCegarLoop]: Abstraction has 1088 states and 1780 transitions. [2022-07-12 05:45:20,924 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) [2022-07-12 05:45:20,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1780 transitions. [2022-07-12 05:45:20,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 05:45:20,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:20,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:45:20,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 05:45:20,929 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:20,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:20,929 INFO L85 PathProgramCache]: Analyzing trace with hash 120536424, now seen corresponding path program 1 times [2022-07-12 05:45:20,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:20,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65342082] [2022-07-12 05:45:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:20,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:21,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:21,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:21,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:21,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:45:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:21,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:21,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:21,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:45:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:21,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:45:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:21,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:45:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:21,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:45:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:21,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 05:45:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:21,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 05:45:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:45:21,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:21,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65342082] [2022-07-12 05:45:21,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65342082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:21,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:45:21,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 05:45:21,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797133527] [2022-07-12 05:45:21,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:21,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 05:45:21,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:21,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 05:45:21,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-12 05:45:21,705 INFO L87 Difference]: Start difference. First operand 1088 states and 1780 transitions. Second operand has 18 states, 16 states have (on average 5.4375) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 05:45:33,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:33,411 INFO L93 Difference]: Finished difference Result 3347 states and 5634 transitions. [2022-07-12 05:45:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 05:45:33,412 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.4375) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 112 [2022-07-12 05:45:33,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:33,425 INFO L225 Difference]: With dead ends: 3347 [2022-07-12 05:45:33,425 INFO L226 Difference]: Without dead ends: 2337 [2022-07-12 05:45:33,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=326, Invalid=1566, Unknown=0, NotChecked=0, Total=1892 [2022-07-12 05:45:33,430 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 4407 mSDsluCounter, 4479 mSDsCounter, 0 mSdLazyCounter, 12249 mSolverCounterSat, 1948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4420 SdHoareTripleChecker+Valid, 5513 SdHoareTripleChecker+Invalid, 14197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1948 IncrementalHoareTripleChecker+Valid, 12249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:33,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4420 Valid, 5513 Invalid, 14197 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1948 Valid, 12249 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-07-12 05:45:33,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2022-07-12 05:45:33,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 1567. [2022-07-12 05:45:33,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1216 states have (on average 1.6036184210526316) internal successors, (1950), 1248 states have internal predecessors, (1950), 278 states have call successors, (278), 59 states have call predecessors, (278), 72 states have return successors, (315), 270 states have call predecessors, (315), 273 states have call successors, (315) [2022-07-12 05:45:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2543 transitions. [2022-07-12 05:45:33,669 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2543 transitions. Word has length 112 [2022-07-12 05:45:33,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:33,669 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2543 transitions. [2022-07-12 05:45:33,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.4375) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 05:45:33,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2543 transitions. [2022-07-12 05:45:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 05:45:33,679 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:33,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:45:33,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 05:45:33,680 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:33,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1145431995, now seen corresponding path program 1 times [2022-07-12 05:45:33,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:33,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588864110] [2022-07-12 05:45:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:33,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:33,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:33,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:33,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:45:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:34,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:34,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:45:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:34,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:45:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:34,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 05:45:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 05:45:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:34,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 05:45:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:45:34,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:34,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588864110] [2022-07-12 05:45:34,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588864110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:34,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:45:34,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 05:45:34,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445680754] [2022-07-12 05:45:34,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:34,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 05:45:34,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:34,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 05:45:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:45:34,306 INFO L87 Difference]: Start difference. First operand 1567 states and 2543 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 05:45:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:40,734 INFO L93 Difference]: Finished difference Result 3685 states and 6119 transitions. [2022-07-12 05:45:40,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 05:45:40,735 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2022-07-12 05:45:40,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:40,746 INFO L225 Difference]: With dead ends: 3685 [2022-07-12 05:45:40,746 INFO L226 Difference]: Without dead ends: 2198 [2022-07-12 05:45:40,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-07-12 05:45:40,753 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 2774 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 5207 mSolverCounterSat, 1036 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2774 SdHoareTripleChecker+Valid, 3315 SdHoareTripleChecker+Invalid, 6243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 5207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:40,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2774 Valid, 3315 Invalid, 6243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1036 Valid, 5207 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-12 05:45:40,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2022-07-12 05:45:40,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 1569. [2022-07-12 05:45:40,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1218 states have (on average 1.6026272577996716) internal successors, (1952), 1248 states have internal predecessors, (1952), 278 states have call successors, (278), 59 states have call predecessors, (278), 72 states have return successors, (315), 272 states have call predecessors, (315), 273 states have call successors, (315) [2022-07-12 05:45:40,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2545 transitions. [2022-07-12 05:45:40,977 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2545 transitions. Word has length 114 [2022-07-12 05:45:40,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:40,977 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2545 transitions. [2022-07-12 05:45:40,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 05:45:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2545 transitions. [2022-07-12 05:45:40,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 05:45:40,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:40,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:45:40,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 05:45:40,982 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:40,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:40,982 INFO L85 PathProgramCache]: Analyzing trace with hash -949029147, now seen corresponding path program 1 times [2022-07-12 05:45:40,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:40,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704578008] [2022-07-12 05:45:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:40,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:41,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:41,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:45:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:41,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:41,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:41,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:41,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:45:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:41,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:45:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:41,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 05:45:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:41,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 05:45:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:41,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 05:45:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:41,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:45:41,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:41,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704578008] [2022-07-12 05:45:41,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704578008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:41,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:45:41,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 05:45:41,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322814236] [2022-07-12 05:45:41,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:41,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 05:45:41,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:41,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 05:45:41,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:45:41,570 INFO L87 Difference]: Start difference. First operand 1569 states and 2545 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 05:45:50,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:45:50,694 INFO L93 Difference]: Finished difference Result 4311 states and 7167 transitions. [2022-07-12 05:45:50,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 05:45:50,694 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 114 [2022-07-12 05:45:50,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:45:50,707 INFO L225 Difference]: With dead ends: 4311 [2022-07-12 05:45:50,707 INFO L226 Difference]: Without dead ends: 2822 [2022-07-12 05:45:50,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2022-07-12 05:45:50,714 INFO L413 NwaCegarLoop]: 1077 mSDtfsCounter, 3718 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 7228 mSolverCounterSat, 1471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3718 SdHoareTripleChecker+Valid, 3920 SdHoareTripleChecker+Invalid, 8699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1471 IncrementalHoareTripleChecker+Valid, 7228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:45:50,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3718 Valid, 3920 Invalid, 8699 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1471 Valid, 7228 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-07-12 05:45:50,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2022-07-12 05:45:51,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2080. [2022-07-12 05:45:51,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 1622 states have (on average 1.6011097410604191) internal successors, (2597), 1652 states have internal predecessors, (2597), 358 states have call successors, (358), 83 states have call predecessors, (358), 99 states have return successors, (410), 355 states have call predecessors, (410), 353 states have call successors, (410) [2022-07-12 05:45:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 3365 transitions. [2022-07-12 05:45:51,021 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 3365 transitions. Word has length 114 [2022-07-12 05:45:51,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:45:51,021 INFO L495 AbstractCegarLoop]: Abstraction has 2080 states and 3365 transitions. [2022-07-12 05:45:51,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 05:45:51,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 3365 transitions. [2022-07-12 05:45:51,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 05:45:51,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:45:51,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:45:51,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 05:45:51,025 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:45:51,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:45:51,026 INFO L85 PathProgramCache]: Analyzing trace with hash 429693419, now seen corresponding path program 1 times [2022-07-12 05:45:51,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:45:51,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350487060] [2022-07-12 05:45:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:45:51,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:45:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:51,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:51,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:51,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:45:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:51,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:45:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:51,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:45:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:51,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:45:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:51,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:45:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:51,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:45:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:51,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:45:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:51,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 05:45:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:51,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 05:45:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:45:51,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:45:51,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:45:51,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350487060] [2022-07-12 05:45:51,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350487060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:45:51,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:45:51,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 05:45:51,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253408050] [2022-07-12 05:45:51,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:45:51,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 05:45:51,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:45:51,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 05:45:51,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-12 05:45:51,591 INFO L87 Difference]: Start difference. First operand 2080 states and 3365 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 05:46:06,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:46:06,121 INFO L93 Difference]: Finished difference Result 9003 states and 15715 transitions. [2022-07-12 05:46:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 05:46:06,128 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 117 [2022-07-12 05:46:06,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:46:06,176 INFO L225 Difference]: With dead ends: 9003 [2022-07-12 05:46:06,176 INFO L226 Difference]: Without dead ends: 6993 [2022-07-12 05:46:06,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=550, Invalid=1172, Unknown=0, NotChecked=0, Total=1722 [2022-07-12 05:46:06,191 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 7528 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 5992 mSolverCounterSat, 3813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7528 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 9805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3813 IncrementalHoareTripleChecker+Valid, 5992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:46:06,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7528 Valid, 3112 Invalid, 9805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3813 Valid, 5992 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-07-12 05:46:06,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6993 states. [2022-07-12 05:46:06,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6993 to 5370. [2022-07-12 05:46:06,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5370 states, 4165 states have (on average 1.5721488595438176) internal successors, (6548), 4249 states have internal predecessors, (6548), 924 states have call successors, (924), 231 states have call predecessors, (924), 280 states have return successors, (1326), 922 states have call predecessors, (1326), 919 states have call successors, (1326) [2022-07-12 05:46:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5370 states to 5370 states and 8798 transitions. [2022-07-12 05:46:07,022 INFO L78 Accepts]: Start accepts. Automaton has 5370 states and 8798 transitions. Word has length 117 [2022-07-12 05:46:07,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:46:07,022 INFO L495 AbstractCegarLoop]: Abstraction has 5370 states and 8798 transitions. [2022-07-12 05:46:07,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 05:46:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5370 states and 8798 transitions. [2022-07-12 05:46:07,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 05:46:07,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:46:07,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:46:07,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 05:46:07,027 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:46:07,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:46:07,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1169029799, now seen corresponding path program 1 times [2022-07-12 05:46:07,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:46:07,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109097817] [2022-07-12 05:46:07,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:46:07,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:46:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:07,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:46:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:07,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:07,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:46:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:07,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:46:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:07,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:07,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:07,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:46:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:07,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:46:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:46:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:07,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 05:46:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:07,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 05:46:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:07,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:46:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:46:07,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:46:07,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109097817] [2022-07-12 05:46:07,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109097817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:46:07,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:46:07,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 05:46:07,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267715196] [2022-07-12 05:46:07,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:46:07,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 05:46:07,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:46:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 05:46:07,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:46:07,596 INFO L87 Difference]: Start difference. First operand 5370 states and 8798 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 05:46:14,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:46:14,636 INFO L93 Difference]: Finished difference Result 12325 states and 20768 transitions. [2022-07-12 05:46:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 05:46:14,638 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 118 [2022-07-12 05:46:14,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:46:14,668 INFO L225 Difference]: With dead ends: 12325 [2022-07-12 05:46:14,668 INFO L226 Difference]: Without dead ends: 7035 [2022-07-12 05:46:14,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-07-12 05:46:14,685 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 2766 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 5162 mSolverCounterSat, 1046 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2766 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 6208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1046 IncrementalHoareTripleChecker+Valid, 5162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-12 05:46:14,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2766 Valid, 3279 Invalid, 6208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1046 Valid, 5162 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-12 05:46:14,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7035 states. [2022-07-12 05:46:15,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7035 to 5382. [2022-07-12 05:46:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 4177 states have (on average 1.5705051472348575) internal successors, (6560), 4249 states have internal predecessors, (6560), 924 states have call successors, (924), 231 states have call predecessors, (924), 280 states have return successors, (1326), 934 states have call predecessors, (1326), 919 states have call successors, (1326) [2022-07-12 05:46:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 8810 transitions. [2022-07-12 05:46:15,400 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 8810 transitions. Word has length 118 [2022-07-12 05:46:15,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:46:15,401 INFO L495 AbstractCegarLoop]: Abstraction has 5382 states and 8810 transitions. [2022-07-12 05:46:15,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 05:46:15,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 8810 transitions. [2022-07-12 05:46:15,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 05:46:15,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:46:15,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:46:15,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 05:46:15,405 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:46:15,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:46:15,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1044496577, now seen corresponding path program 1 times [2022-07-12 05:46:15,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:46:15,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479089591] [2022-07-12 05:46:15,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:46:15,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:46:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:15,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:46:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:15,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:15,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:46:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:15,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:46:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:15,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:15,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:15,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:46:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:15,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:46:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:46:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:15,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 05:46:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:46:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 05:46:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:16,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 05:46:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:46:16,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:46:16,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479089591] [2022-07-12 05:46:16,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479089591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:46:16,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:46:16,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-12 05:46:16,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098768416] [2022-07-12 05:46:16,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:46:16,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 05:46:16,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:46:16,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 05:46:16,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-07-12 05:46:16,096 INFO L87 Difference]: Start difference. First operand 5382 states and 8810 transitions. Second operand has 23 states, 22 states have (on average 4.454545454545454) internal successors, (98), 17 states have internal predecessors, (98), 8 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-12 05:46:38,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:46:38,952 INFO L93 Difference]: Finished difference Result 13784 states and 23202 transitions. [2022-07-12 05:46:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-07-12 05:46:38,953 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.454545454545454) internal successors, (98), 17 states have internal predecessors, (98), 8 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 125 [2022-07-12 05:46:38,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:46:38,992 INFO L225 Difference]: With dead ends: 13784 [2022-07-12 05:46:38,992 INFO L226 Difference]: Without dead ends: 8354 [2022-07-12 05:46:39,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2249 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1365, Invalid=5945, Unknown=0, NotChecked=0, Total=7310 [2022-07-12 05:46:39,016 INFO L413 NwaCegarLoop]: 1087 mSDtfsCounter, 9891 mSDsluCounter, 5862 mSDsCounter, 0 mSdLazyCounter, 16498 mSolverCounterSat, 3328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9891 SdHoareTripleChecker+Valid, 6949 SdHoareTripleChecker+Invalid, 19826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3328 IncrementalHoareTripleChecker+Valid, 16498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-07-12 05:46:39,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9891 Valid, 6949 Invalid, 19826 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3328 Valid, 16498 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2022-07-12 05:46:39,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8354 states. [2022-07-12 05:46:39,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8354 to 6682. [2022-07-12 05:46:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6682 states, 5257 states have (on average 1.5674338976602624) internal successors, (8240), 5345 states have internal predecessors, (8240), 1084 states have call successors, (1084), 271 states have call predecessors, (1084), 340 states have return successors, (1570), 1098 states have call predecessors, (1570), 1079 states have call successors, (1570) [2022-07-12 05:46:39,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6682 states to 6682 states and 10894 transitions. [2022-07-12 05:46:39,934 INFO L78 Accepts]: Start accepts. Automaton has 6682 states and 10894 transitions. Word has length 125 [2022-07-12 05:46:39,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:46:39,935 INFO L495 AbstractCegarLoop]: Abstraction has 6682 states and 10894 transitions. [2022-07-12 05:46:39,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.454545454545454) internal successors, (98), 17 states have internal predecessors, (98), 8 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-12 05:46:39,935 INFO L276 IsEmpty]: Start isEmpty. Operand 6682 states and 10894 transitions. [2022-07-12 05:46:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 05:46:39,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:46:39,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:46:39,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 05:46:39,939 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:46:39,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:46:39,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1924335167, now seen corresponding path program 1 times [2022-07-12 05:46:39,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:46:39,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796397445] [2022-07-12 05:46:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:46:39,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:46:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:40,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:46:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:40,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:40,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:46:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:40,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:46:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:40,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:40,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:46:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:40,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:46:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:46:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:40,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 05:46:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:40,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:46:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:46:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:40,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:46:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:46:40,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:46:40,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796397445] [2022-07-12 05:46:40,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796397445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:46:40,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:46:40,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 05:46:40,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114862555] [2022-07-12 05:46:40,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:46:40,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 05:46:40,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:46:40,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 05:46:40,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-12 05:46:40,552 INFO L87 Difference]: Start difference. First operand 6682 states and 10894 transitions. Second operand has 16 states, 16 states have (on average 6.1875) internal successors, (99), 12 states have internal predecessors, (99), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-12 05:46:57,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:46:57,194 INFO L93 Difference]: Finished difference Result 21400 states and 36284 transitions. [2022-07-12 05:46:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 05:46:57,195 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.1875) internal successors, (99), 12 states have internal predecessors, (99), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) Word has length 126 [2022-07-12 05:46:57,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:46:57,275 INFO L225 Difference]: With dead ends: 21400 [2022-07-12 05:46:57,275 INFO L226 Difference]: Without dead ends: 14798 [2022-07-12 05:46:57,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2022-07-12 05:46:57,397 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 7258 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 9005 mSolverCounterSat, 2822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7258 SdHoareTripleChecker+Valid, 3852 SdHoareTripleChecker+Invalid, 11827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2822 IncrementalHoareTripleChecker+Valid, 9005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:46:57,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7258 Valid, 3852 Invalid, 11827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2822 Valid, 9005 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-07-12 05:46:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14798 states. [2022-07-12 05:46:59,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14798 to 12054. [2022-07-12 05:46:59,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12054 states, 9509 states have (on average 1.5558944158165948) internal successors, (14795), 9660 states have internal predecessors, (14795), 1846 states have call successors, (1846), 489 states have call predecessors, (1846), 698 states have return successors, (2977), 1959 states have call predecessors, (2977), 1841 states have call successors, (2977) [2022-07-12 05:46:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12054 states to 12054 states and 19618 transitions. [2022-07-12 05:46:59,199 INFO L78 Accepts]: Start accepts. Automaton has 12054 states and 19618 transitions. Word has length 126 [2022-07-12 05:46:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:46:59,199 INFO L495 AbstractCegarLoop]: Abstraction has 12054 states and 19618 transitions. [2022-07-12 05:46:59,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.1875) internal successors, (99), 12 states have internal predecessors, (99), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-12 05:46:59,200 INFO L276 IsEmpty]: Start isEmpty. Operand 12054 states and 19618 transitions. [2022-07-12 05:46:59,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-12 05:46:59,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:46:59,204 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:46:59,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 05:46:59,204 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:46:59,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:46:59,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1163618173, now seen corresponding path program 1 times [2022-07-12 05:46:59,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:46:59,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326721101] [2022-07-12 05:46:59,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:46:59,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:46:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:46:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:46:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:46:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:46:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:46:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:46:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:46:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 05:46:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:46:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:46:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:46:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 05:46:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:46:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:46:59,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:46:59,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326721101] [2022-07-12 05:46:59,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326721101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:46:59,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:46:59,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 05:46:59,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506059913] [2022-07-12 05:46:59,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:46:59,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 05:46:59,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:46:59,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 05:46:59,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:46:59,759 INFO L87 Difference]: Start difference. First operand 12054 states and 19618 transitions. Second operand has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-12 05:47:18,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:47:18,185 INFO L93 Difference]: Finished difference Result 37390 states and 62555 transitions. [2022-07-12 05:47:18,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-12 05:47:18,186 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 131 [2022-07-12 05:47:18,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:47:18,309 INFO L225 Difference]: With dead ends: 37390 [2022-07-12 05:47:18,309 INFO L226 Difference]: Without dead ends: 25417 [2022-07-12 05:47:18,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=725, Invalid=2031, Unknown=0, NotChecked=0, Total=2756 [2022-07-12 05:47:18,367 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 5288 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 10197 mSolverCounterSat, 2766 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5288 SdHoareTripleChecker+Valid, 5206 SdHoareTripleChecker+Invalid, 12963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2766 IncrementalHoareTripleChecker+Valid, 10197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:47:18,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5288 Valid, 5206 Invalid, 12963 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2766 Valid, 10197 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-07-12 05:47:18,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25417 states. [2022-07-12 05:47:20,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25417 to 20951. [2022-07-12 05:47:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20951 states, 16648 states have (on average 1.5594065353195579) internal successors, (25961), 16850 states have internal predecessors, (25961), 3120 states have call successors, (3120), 823 states have call predecessors, (3120), 1182 states have return successors, (4997), 3365 states have call predecessors, (4997), 3115 states have call successors, (4997) [2022-07-12 05:47:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20951 states to 20951 states and 34078 transitions. [2022-07-12 05:47:21,117 INFO L78 Accepts]: Start accepts. Automaton has 20951 states and 34078 transitions. Word has length 131 [2022-07-12 05:47:21,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:47:21,118 INFO L495 AbstractCegarLoop]: Abstraction has 20951 states and 34078 transitions. [2022-07-12 05:47:21,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-12 05:47:21,118 INFO L276 IsEmpty]: Start isEmpty. Operand 20951 states and 34078 transitions. [2022-07-12 05:47:21,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-12 05:47:21,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:47:21,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:47:21,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 05:47:21,123 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:47:21,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:47:21,123 INFO L85 PathProgramCache]: Analyzing trace with hash 222585221, now seen corresponding path program 1 times [2022-07-12 05:47:21,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:47:21,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981126534] [2022-07-12 05:47:21,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:47:21,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:47:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:47:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:47:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 05:47:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:47:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:47:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:47:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:47:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:47:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 05:47:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 05:47:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:47:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:47:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:47:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 05:47:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:47:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:47:21,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:47:21,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981126534] [2022-07-12 05:47:21,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981126534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:47:21,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:47:21,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 05:47:21,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889339302] [2022-07-12 05:47:21,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:47:21,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 05:47:21,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:47:21,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 05:47:21,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-12 05:47:21,790 INFO L87 Difference]: Start difference. First operand 20951 states and 34078 transitions. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 12 states have internal predecessors, (100), 4 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-12 05:47:38,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:47:38,248 INFO L93 Difference]: Finished difference Result 47082 states and 78415 transitions. [2022-07-12 05:47:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 05:47:38,249 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 12 states have internal predecessors, (100), 4 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) Word has length 131 [2022-07-12 05:47:38,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:47:38,401 INFO L225 Difference]: With dead ends: 47082 [2022-07-12 05:47:38,402 INFO L226 Difference]: Without dead ends: 26211 [2022-07-12 05:47:38,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=477, Invalid=1245, Unknown=0, NotChecked=0, Total=1722 [2022-07-12 05:47:38,498 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 6132 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 8422 mSolverCounterSat, 2903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6132 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 11325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2903 IncrementalHoareTripleChecker+Valid, 8422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:47:38,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6132 Valid, 3312 Invalid, 11325 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2903 Valid, 8422 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time]